CN113478804A

CN113478804A - Surface coating method of elastic rotating body

Info

Publication number: CN113478804A
Application number: CN202110860731.3A
Authority: CN
Inventors: 许运动; 许恪铭
Original assignee: Jiangsu Keming Intelligent Transportation Technology Co ltd
Current assignee: Jiangsu Keming Intelligent Transportation Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-08

Abstract

The invention discloses a surface coating method of an elastic rotating body, and belongs to the technical field of surface treatment. The method comprises the following steps: fixing the bearing trolley between the first film coating plate and the second film coating plate, enabling the centers of the fixed seat, the first film coating plate and the second film coating plate to be located on the same horizontal plane, and then fixing the elastic rotating body on the fixed seat; the coiled protective film is sleeved on the first conveying roller, and the end part of the protective film is connected with the second conveying roller; the PLC controller outputs a first instruction to the first driving motor, the second driving motor and the thrust oil cylinder to act, the first film coating plate and the second film coating plate wrap the protective film on the surface of the elastic rotating body, the PLC controller outputs a second instruction to the heating sheet, and the protective film is heated and shrunk and is tightly attached to the surface of the elastic rotating body. A layer of protective film is attached to the surface of the elastic rotating body, so that the surface of the elastic rotating body is smooth, dust is not easy to enter holes in the surface of the elastic rotating body, and the problem that the surface of the elastic rotating body is blackened is solved.

Description

Surface coating method of elastic rotating body

Technical Field

The invention belongs to the technical field of surface treatment, and particularly relates to a surface coating method of an elastic rotating body.

Background

With the rapid development of economy, automobiles are commonly used as a convenient vehicle. In China, the speed limit of different roads is different, for example, the speed limit of urban roads is 40 kilometers per hour, the speed limit of ordinary roads is 40-80 kilometers per hour, and the speed limit of express highways is 60-120 kilometers per hour, so most of traffic accidents in urban areas are rear-end accidents, and on the ordinary roads or the express highways, traffic accidents frequently occur due to the fact that the speed of automobiles is too fast, most serious of the traffic accidents are that automobiles running at high speed collide against guard rails on the roadside or in the middle of the roads, and the guard rails are composed of concrete bricks or concrete blocks arranged at intervals and transverse bars connecting adjacent blocks, or are composed of cross bars and vertical columns connected through steel structures, but the guard rails cannot absorb collision kinetic energy of the automobiles.

For this reason, rotary crash barriers have appeared on the market today, for example chinese patent CN201080000561.1 discloses a road impact absorbing facility; chinese patent CN201220370227.1 discloses an SA-level rotary crash barrier with a rotating body for absorbing impact force; and chinese patent CN201610384329.1 filed by the applicant in 2016, month 5, discloses a road traffic guardrail capable of buffering and absorbing impact. The main part of the rotary anti-collision traffic guardrail is an elastic rotating body, the elastic rotating body is made of one of ethylene-vinyl acetate (EVA) and flexible polyurethane through foaming, various uncertain factors exist in the foaming process and cause the elastic rotating body to be foamed unevenly, holes can be formed in the surface of a cylinder body, the rotary anti-collision traffic guardrail is generally installed in the middle or two sides of a road, dust raised by a vehicle running belt and tiny dust in the air can easily fall on the surface of the elastic rotating body, the dust enters the holes in the surface, after long-time accumulation, the surface of the elastic rotating body can be blackened, particularly, the elastic rotating body in the middle of an urban road directly influences the attractiveness.

The inventor found that chinese patent application No. 201821230798.9, published as 2019, 5, 7, discloses an elastic rotating body having a central symmetry and a hollow space inside, and an inlet port closable with a lid is formed in a part of the upper surface of the elastic rotating body, so that a foaming material can be introduced through the inlet port to form an elastic foamed material in the space. The elastic rotating body disclosed in the patent is provided with a layer of shell outside the foaming material, and the shell can prevent dust from falling into the foaming material to a certain extent, so that the problem of surface blackening is avoided.

In addition, in order to reduce the pores on the surface of the elastic rotating body, the raw material foaming angle can be used, for example, chinese patent application No. 201810703378.6 discloses a graphene-foamed EVA composite material, in which graphene oxide microspheres in the pores are expanded and reduced to gradually fill the pores, and finally, a porous graphene-filled foamed EVA material is obtained. The graphene is filled in the EVA holes, plays a role in supporting and energy absorption, and can effectively improve the strength and elasticity of the foaming material. Further, as in chinese patent application No. 201711082196.3, a permanently antistatic and conductive EVA is disclosed, which contains LDPE, EVA and calcium powder, and the product obtained is void-free.

Disclosure of Invention

1. Problems to be solved

The invention provides a surface coating method of an elastic rotating body, aiming at the problem that the surface of the existing elastic rotating body is easy to blacken.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the surface film coating method of the elastic rotator adopts a surface film coating device, the surface film coating device comprises a bearing unit, a film coating conveying unit, a film coating attaching unit and a control unit,

the bearing unit comprises a bearing trolley, a support and a fixed seat, the support is fixed on the bearing trolley, the fixed seat is cylindrical and fixed on the support, and the fixed seat is sleeved with the elastic rotating body;

the film covering and conveying unit comprises a first conveying roller, a first driving motor, a second conveying roller, a second driving motor and a protective film, wherein the protective film surrounds the first conveying roller and the second conveying roller;

the film laminating attachment unit comprises a first film laminating plate, a second film laminating plate and a thrust oil cylinder for driving the first film laminating plate and the second film laminating plate, the first film laminating plate and the second film laminating plate are horizontally and symmetrically arranged at two sides of the bearing trolley, mold cavities matched with the elastic rotating body are arranged on the first film laminating plate and the second film laminating plate, and heating sheets are arranged on the inner side surfaces of the mold cavities;

the control unit comprises a PLC controller which is respectively and electrically connected with the first driving motor, the second driving motor, the thrust oil cylinder and the heating sheet;

the method comprises the following specific steps: fixing the bearing trolley between the first film coating plate and the second film coating plate, enabling the centers of the fixed seat, the first film coating plate and the second film coating plate to be located on the same horizontal plane, and then fixing the elastic rotating body on the fixed seat; the coiled protective film is sleeved on the first conveying roller, and the end part of the protective film is connected with the second conveying roller; the PLC outputs a first instruction to the first driving motor, the second driving motor and the thrust oil cylinder to act, the first film coating plate and the second film coating plate wrap the protective film on the surface of the elastic rotating body, the PLC outputs a second instruction to the heating sheet, the heating sheet is heated to 100 ℃ and 150 ℃, the temperature is kept for 1-3min, and the protective film shrinks when being heated and is tightly attached to the surface of the elastic rotating body.

In a possible embodiment of the present invention, the fixing base is provided with an adjusting assembly, the adjusting assembly includes a pressing block and an elastic member, one end of the elastic member is connected to the pressing block, and the other end of the elastic member is connected to the fixing base.

In one possible embodiment of the invention, the first and second coating plates are made of stainless steel.

In a possible embodiment of the present invention, the inner surface of the mold cavity is smooth, and a wear-resistant heat-conducting layer is sprayed on the inner surface of the mold cavity, and the wear-resistant heat-conducting layer is a chromium alloy layer coating.

In one possible embodiment of the present invention, the protective film is a PE film or a PP film.

In one possible embodiment of the present invention, the heating sheet is a carbon fiber heating sheet.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the surface film coating method of the elastic rotating body, the protective film is attached to the surface of the elastic rotating body, holes in the surface of the elastic rotating body are covered on the premise that the using function of the elastic rotating body is not influenced, dust and the elastic rotating body are effectively isolated, the dust is prevented from falling into the holes, the surface of the elastic rotating body is smooth, the dust is periodically cleaned, and the appearance is kept attractive as much as possible;

(2) the surface coating method of the elastic rotator has the advantages that the steps are connected in order.

Drawings

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of an elastic rotating body according to the present invention;

FIG. 2 is a schematic structural diagram of a surface coating apparatus of an elastic rotating body according to the present invention;

FIG. 3 is a side view of a surface coating apparatus of an elastic rotary body according to the present invention;

FIG. 4 is a schematic diagram of a first film-coating structure of the surface film-coating device of the elastic rotator of the present invention;

FIG. 5 is a schematic view of an adjusting assembly of the surface coating device of the elastic rotator of the present invention.

The notation in the figure is:

100. a carrying unit; 110. carrying a trolley; 120. a support; 130. a fixed seat; 131. pressing the block; 132. an elastic member;

200. a film covering and conveying unit; 210. a first conveying roller; 220. a first drive motor; 230. a second conveying roller; 240. a second drive motor; 250. a protective film;

300. a film-covering attaching unit; 310. a first film-coated sheet; 311. a mold cavity; 312. a heating plate; 320. a second film-coated sheet; 330. a thrust oil cylinder;

400. an elastic rotating body.

Detailed Description

The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to describe the features and characteristics of the invention, to set forth the best mode of carrying out the invention, and to sufficiently enable one skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.

The detailed description and exemplary embodiments of the invention will be better understood when read in conjunction with the appended drawings, where the elements and features of the invention are identified by reference numerals.

Example 1

As shown in fig. 1, the elastic rotating body 400 of the present invention is made of one of ethylene-vinyl acetate (EVA) and flexible polyurethane, and when the elastic rotating body 400 is impacted by a vehicle load, the elastic rotating body 400 can absorb impact energy well, so as to buffer, stabilize and guide the vehicle, reduce the risk of collision rebound, avoid sideslip and rollover during vehicle collision, and effectively improve the safety of people in the vehicle.

As described in the background art, various uncertain factors in the foaming process cause uneven foaming of the elastic rotating body 400, holes are formed on the surface of the elastic rotating body, the rotating crash barriers are generally installed in the middle or on both sides of a road, dust raised by the running of a vehicle and tiny dust in the air are very likely to fall on the surface of the elastic rotating body 400, and the dust enters the holes on the surface and can cause blackening of the surface of the elastic rotating body 400 after being accumulated for a long time, particularly the elastic rotating body 400 located in the middle of an urban road, which directly affects the appearance. Based on the above problems, the inventor has conducted a lot of experiments and analyses, on one hand, the compactness of the rotating body can be enhanced by improving the raw material of the rotating body itself, so as to reduce the void ratio, and on the other hand, a compact protective film 250 or a protective shell or a protective layer can be physically disposed on the surface of the elastic rotating body 400 to prevent dust from entering the void. However, it has been found through a lot of research that the foaming technology of EVA is mature at present and a lot of patents and papers are published at home and abroad, and thus, the method using raw materials is not suitable. For the dense protective film 250 or the protective shell or the protective layer disposed on the surface of the elastic rotating body 400, not only the material problem itself but also the particularity of the structural shape need to be considered, and a similar technical scheme is not disclosed at present.

As shown in fig. 2 to 5, the surface coating device of the elastic rotating body 400 of the present embodiment includes: a bearing unit 100 for fixing the elastic rotary body 400 to be coated; a film-coating delivery unit 200 for providing a protective film 250 for the elastic rotary body 400 to be coated; a coating film attaching unit 300 for attaching the protective film 250 to the surface of the elastic rotary body 400; and a control unit electrically connected to the carrier unit 100, the coating film transfer unit 200, and the coating film application unit 300, and configured to control operations of the three units.

In fig. 2, a preferred structure of the carrying unit 100 is shown, the carrying unit 100 includes a carrying trolley 110, a bracket 120 and a fixing seat 130, the bracket 120 is fixed on the carrying trolley 110, the fixing seat 130 is cylindrical and fixed on the bracket 120, and the fixing seat 130 is sleeved with the elastic rotating body 400, so that the elastic rotating body 400 can be fixed to prevent rotation. The bottom plate of the carrying trolley 110 is open, and the fixing seat 130 is located above the opening.

In addition, the carrying unit 100 may also be a clamping mechanism at both sides, for example, two sets of hydraulic rods are used to clamp the elastic rotating body 400 in the length direction, and fix the elastic rotating body 400 to prevent it from rotating, so as to achieve the same functions as the carrying trolley 110, the bracket 120 and the fixing base 130.

In addition, the bearing unit 100 can also be a manipulator, for example, a six-joint robot produced by Dongguan glow robot automation corporation, the robot is linked with other units, the use is more intelligent, and the specific process is as follows: the elastic rotating body 400 is clamped in the length direction, and the elastic rotating body 400 is fixed to prevent the elastic rotating body 400 from rotating, so that the same functions as those of the carrying trolley 110, the bracket 120 and the fixing seat 130 can be realized.

As shown in fig. 3, the film covering and conveying unit 200 includes a first conveying roller 210, a first driving motor 220, a second conveying roller 230, a second driving motor 240, and a protective film 250 surrounding the first conveying roller 210 and the second conveying roller 230, the first conveying roller 210 is fixed directly above the carrying trolley 110 by a hanger, the second conveying roller 230 is disposed directly below the carrying trolley 110, the protective film 250 is located on the elastic rotating body 400 side, the first driving motor 220 drives the first conveying roller 210, and the second driving motor 240 drives the second conveying roller 230.

When in use, a pit is arranged below the bearing trolley 110, and the second conveying roller 230 and the second driving motor 240 are fixed in the pit by a support; the first conveying roller 210 and the first driving motor 220 are fixed on the top of a wall or other supporting surfaces by a hanging bracket; the rolled protective film 250 is sleeved on the first conveying roller 210, the end part of the protective film 250 penetrates through the opening of the bearing trolley 110 to be connected with the second conveying roller 230, and the second conveying roller 230 drives the protective film 250 to rotate to convey the protective film 250 downwards.

Further, as shown in fig. 5, in consideration of the different inner diameters of the elastic rotating bodies 400, the fixing base 130 is provided with an adjusting assembly, the adjusting assembly includes a pressing block 131 and an elastic member 132, one end of the elastic member 132 (e.g., a spring) is connected to the pressing block 131, and the other end is connected to the fixing base 130. The elastic rotating body 400 is sleeved on the fixing seat 130 and locked by the adjusting assembly to prevent the elastic rotating body from rotating, so that the film covering is ensured to be smoothly carried out.

The film covering transport unit 200 may be horizontally disposed such that the first transport roller 210, the first drive motor 220, the second transport roller 230, the second drive motor 240, and the protective film 250 wound around the first transport roller 210 and the second transport roller 230 are positioned above or below the elastic rotary body 400.

In addition, the film covering and conveying unit 200 may further include a first conveying roller 210, a first driving motor 220, a second conveying roller 230, and a second driving motor 240, which are fixed to the ceiling by a hanger, wherein the distance between the first conveying roller 210 and the second conveying roller 230 may be selected according to the size of the factory building, preferably 1.2m to 2m, the first conveying roller 210 or the second conveying roller 230 may be selected to sleeve the rolled protective film 250, the end of the protective film 250 is connected to the second conveying roller 230 or the first conveying roller 210, the protective film 250 is suspended in the air, the elastic rotating body 400 may be disposed above the protective film 250, and the film covering and attaching unit 300 may be disposed below the elastic rotating body 400.

In fig. 3 and 4, it can be seen that the film attaching unit 300 includes a first film plate 310, a second film plate 320, and a thrust cylinder 330 for driving the first film plate 310 and the second film plate 320, the first film plate 310 and the second film plate 320 are horizontally and symmetrically disposed on two sides of the carrying trolley 110, the first film plate 310 and the second film plate 320 are both provided with a mold cavity 311 engaged with the elastic rotating body 400, and the inner side surface of the mold cavity 311 is provided with a carbon fiber heating sheet 312. Preferably, the first and

second membrane plates

310, 320 are made of stainless steel, although other metallic materials similar to stainless steel may be used.

It should be noted that the first film coating plate 310 and the second film coating plate 320 may also adopt a closing structure, that is, the first film coating plate and the second film coating plate extend out from one side of the carrying trolley 110 at the same time, and clamp the elastic rotating body 400 to coat the film after opening.

In this embodiment, the inner surfaces of the cavities 311 of the first and

second coating plates

310 and 320 are smooth, and a wear-resistant heat-conducting layer is sprayed on the inner surfaces of the cavities 311, and the wear-resistant heat-conducting layer is a chromium alloy layer coating. On one hand, the surface of the elastic rotating body 400 is smooth, on the other hand, the wear-resistant and heat-conducting functions are achieved, and the service lives of the first film-coated plate 310 and the second film-coated plate 320 are prolonged. According to the calculation of the current production of 150 pieces per day, the first film covering plate 310 and the second film covering plate 320 are seriously abraded, and in consideration of the problem, a chromium alloy layer coating is sprayed on the inner part, so that the abrasion resistance is good, the service life of the first film covering plate 310 and the second film covering plate 320 is effectively prolonged, and the service life is averagely prolonged by 10-15%.

In addition, in the surface coating device of the elastic rotating body 400 shown in fig. 2 to 5, the elastic rotating body 400 is fixed, and the first coating plate 310 and the second coating plate 320 sandwich the elastic rotating body 400 from both sides. With respect to this structure, a corresponding improvement may also be made, for example, after the protective film 250 is wrapped around the elastic rotating body 400 manually, the mechanical arm clamps both sides of the elastic rotating body 400 in the length direction, and then extends into the elastic rotating body from one side, and the first coating plate 310 and the second coating plate 320 clamp the elastic rotating body 400 from both sides, so that the wrapping of the protective film 250 may also be completed.

In this embodiment, the protective film 250 is preferably a PE film or a PP film, and a material similar to the PE film or the PP film may be selected. The melting point of the PE film or the PP film is low, generally at 120-; in this embodiment, the width of the protective film 250 is set to be 1.4 to 1.8 times the length of the elastic rotator 400, so that the elastic rotator 400 is completely wrapped as much as possible. Meanwhile, the PE film or the PP film has good adhesion with the elastic rotator 400.

The embodiment provides a surface coating method for the elastic rotating body 400, which comprises the following specific steps: fixing the carrying trolley 110 between the first film-coated plate 310 and the second film-coated plate 320, and making the centers of the fixed seat 130 and the first film-coated plate 310 and the second film-coated plate 320 be located on the same horizontal plane, and then fixing the elastic rotating body 400 on the fixed seat 130; the rolled protective film 250 is sleeved on the first conveying roller 210, and the end part of the protective film 250 is connected with the second conveying roller 230; the PLC outputs a first command to the first driving motor 220, the second driving motor 240 and the thrust cylinder 330, the first film-coated plate 310 and the second film-coated plate 320 wrap the protection film 250 on the surface of the elastic rotating body 400, the PLC outputs a second command to the heating sheet 312, the heating sheet 312 is heated to 100-.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The surface coating method of the elastic rotator is characterized by comprising the following specific steps of: fixing a bearing trolley (110) between a first film coating plate (310) and a second film coating plate (320), enabling the centers of a fixed seat (130), the first film coating plate (310) and the second film coating plate (320) to be located on the same horizontal plane, and then fixing an elastic rotating body (400) on the fixed seat (130); the coiled protective film (250) is sleeved on the first conveying roller (210), and the end part of the protective film (250) is connected with the second conveying roller (230); the PLC outputs a first instruction to the first driving motor (220), the second driving motor (240) and the thrust oil cylinder (330) to act, the first film coating plate (310) and the second film coating plate (320) wrap the protective film (250) on the surface of the elastic rotating body (400), the PLC outputs a second instruction to the heating sheet (312), the heating sheet (312) is heated to 100 and 150 ℃, the temperature is kept for 1-3min, the protective film (250) is heated and shrunk and is tightly attached to the surface of the elastic rotating body (400).

2. The method of coating a surface of an elastic rotating body according to claim 1, wherein the first coating plate (310) and the second coating plate (320) are made of stainless steel.

3. The method for coating the surface of the elastic rotating body according to claim 2, wherein the inner surface of the die cavity (311) is smooth, and a wear-resistant heat-conducting layer is sprayed on the inner surface of the die cavity (311), and the wear-resistant heat-conducting layer is a chromium alloy layer coating.

4. The surface coating method of an elastic rotary body according to claim 3, wherein the protective film (250) is a PE film or a PP film.

5. The surface coating method of an elastic rotary body according to claim 4, wherein the heat sheet (312) is a carbon fiber heat sheet.