阅读说明：本技术 富液式铅酸蓄电池用涂膏板栅及其制备方法 (Paste-coated grid for flooded lead-acid storage battery and preparation method thereof ) 是由 刘义 孙汝强 于 2019-09-12 设计创作，主要内容包括：富液式铅酸蓄电池用涂膏板栅及其制备方法,包括所述缓冲部分呈锥形结构,所述缓冲部分的宽度由靠近所述极耳的一端向另一端逐渐缩短；锥形结构的所述缓冲部分用以提高极板充电接受能力与大电流放电性能；所述加强筋置于所述横筋条之间；所述加强筋向所述纵向支撑部件的背部延伸,所述加强筋的底端与所述边框的底面平齐,所述加强筋的厚度大于所述下部筋条的厚度,所述加强筋用以保证铅膏能够包裹各个所述下部筋条；本发明锥形结构的缓冲部分能够增大纵向筋条与极耳连接处的体积,进而提高极板充电接受能力与大电流放电性能；加强筋的设置一方面可提高板栅的强度,另一方面可作为板栅的支撑部件,使得横筋条与加工台之前留有扩散间隙。(The paste coating grid for the flooded lead-acid storage battery and the preparation method thereof comprise that the buffering part is in a conical structure, and the width of the buffering part is gradually shortened from one end close to the lug to the other end; the buffer part of the conical structure is used for improving the charging acceptance of the polar plate and the large-current discharging performance; the reinforcing ribs are arranged between the transverse ribs; the reinforcing ribs extend towards the back of the longitudinal supporting part, the bottom ends of the reinforcing ribs are flush with the bottom surface of the frame, the thickness of the reinforcing ribs is larger than that of the lower ribs, and the reinforcing ribs are used for ensuring that lead plaster can wrap the lower ribs; the buffering part with the conical structure can increase the volume of the joint of the longitudinal ribs and the lugs, so that the charge acceptance capacity and the large-current discharge performance of the pole plate are improved; the arrangement of the reinforcing ribs can improve the strength of the grid on one hand, and can be used as a support part of the grid on the other hand, so that a diffusion gap is reserved between the transverse ribs and the processing table.)

1. The paste-coated grid for the flooded lead-acid storage battery is characterized in that: the device comprises a frame, wherein a lug is arranged on the outer wall of one end of the frame; a longitudinal supporting part and a transverse supporting part are arranged in the frame, and a cavity area enclosed between the longitudinal supporting part and the transverse supporting part is a filling area; the longitudinal support member comprises a first longitudinal rib and a second longitudinal rib; the first longitudinal ribs are arranged opposite to the tabs, one ends of the first longitudinal ribs, which are close to the tabs, are buffer parts, the buffer parts are of conical structures, and the width of the buffer parts is gradually shortened from one ends, which are close to the tabs, to the other ends; the buffer part of the conical structure is used for improving the charging acceptance of the polar plate and the large-current discharging performance; the second longitudinal ribs are distributed in the area of the frame except the first longitudinal ribs;

the transverse supporting part comprises reinforcing ribs and transverse ribs; the reinforcing ribs and the two ends of the transverse ribs are vertically and fixedly connected with the inner wall of the frame, the transverse ribs comprise upper ribs and lower ribs, the upper ribs and the lower ribs are symmetrically distributed in a staggered manner, the upper ribs extend towards the upper part, and the lower ribs extend towards the lower part; the reinforcing ribs are arranged between the transverse ribs; the strengthening rib to the back of vertical support component extends, the bottom of strengthening rib with the bottom surface parallel and level of frame, the thickness of strengthening rib is greater than the thickness of lower part rib, the strengthening rib is used for guaranteeing that the lead plaster can wrap up each the lower part rib.

2. The pasted grid for a flooded lead acid battery of claim 1, characterized in that: the top of the frame is a surface filling area, the bottom of the frame is a back filling area, and the cross section of the reinforcing rib is of a hexagonal structure; the reinforcing rib is divided into a first upper part and a first lower part by the longitudinal supporting part, and the cross sections of the first upper part and the first lower part are isosceles trapezoids; the first upper part is connected with the longitudinal supporting part and extends into the surface filling area, the first lower part extends downwards to the back filling area, and the bottom surface of the first lower part is flush with the bottom surface of the frame; two hypotenuses of first upper segment from top to bottom outwards extend to filling area department, two hypotenuses of first lower segment shorten from top to bottom inwards.

3. The pasted grid for a flooded lead acid battery of claim 2, characterized in that: the cross sections of the upper ribs are hexagonal; the upper rib is divided into a second upper part and a second lower part by the longitudinal supporting part, and the sections of the second upper part and the second lower part are isosceles trapezoids; the second lower part is connected with the longitudinal supporting part and extends into the back surface filling area, and the second upper part extends upwards into the surface filling area; two hypotenuses of second upper segment from top to bottom outwards extend to filling area department, two hypotenuses of second lower segment shorten from top to bottom inwards, the thickness of second upper segment is greater than second lower segment.

4. The pasted grid for a flooded lead acid battery of claim 3, characterized in that: the cross sections of the lower ribs are hexagonal, the lower ribs are divided into a third upper part and a third lower part by the longitudinal supporting component, and the cross sections of the third upper part and the third lower part are isosceles trapezoids; the third upper portion with vertical supporting component connect and stretch into in the surface filling district, the third lower part stretch into downwards in the back filling district, two hypotenuses of third upper portion outwards extend to from top to bottom filling district department, two hypotenuses of third lower part inwards shorten from top to bottom, the thickness of third lower part is greater than the third upper portion.

5. The preparation method of the paste-coated grid for the flooded lead-acid storage battery is characterized by comprising the following steps of: the pasted grid for the flooded lead-acid battery of claim 4, wherein the preparation method comprises the following steps:

s1, molding a grid by casting:

processing a forming groove of a buffering part in a casting die into a conical structure in advance, and processing forming grooves of transverse ribs and reinforcing ribs into a six-sided structure;

the molten material is poured into a forming groove, and after cooling and solidification, the grid can be integrally formed;

s2, pasting:

placing the formed grid on a processing platform, wherein upper ribs of transverse ribs face upwards, lower ribs face downwards, reinforcing ribs are used as a supporting structure and placed on the surface of the processing platform, a diffusion gap is ensured to be reserved between the transverse ribs and the processing platform, and a back filling area is formed between a longitudinal supporting component and the processing platform;

the lead plaster in a molten state is coated on the grid by a plaster coating machine, and the lead plaster passes through the filling area and enters the back filling area;

the lead plaster is gradually diffused through the diffusion gap until the back filling area is filled with the lead plaster, and meanwhile, each transverse rib is wrapped;

discharging continuously by the paste coating machine, filling each filling area, filling and wrapping each upper rib upwards continuously, stopping when the upper lead paste filling surface is flush with the top surface of the frame, and keeping the upper lead paste filling thickness of the longitudinal supporting component the same as the lower lead paste filling thickness;

and S3, cooling and forming.

6. The pasted grid for a flooded lead acid battery of claim 5, characterized in that: and the transverse ribs and the side surfaces of the reinforcing ribs are tightly bonded with the melting coating paste.

Technical Field

The invention belongs to the technical field of lead-acid storage battery processing, and particularly relates to a pasted grid for a flooded lead-acid storage battery and a preparation method thereof.

Background

Positive and negative grids of the flooded lead-acid storage battery are both in paste type, and the alloy of the positive and negative grids can adopt PbSb alloy (or the positive grid adopts PbSb alloy, and the negative grid adopts PbCa alloy, so that the water loss of the battery can be reduced, and the water adding interval period of the battery can be prolonged); the flooded lead-acid battery has a long float charge life of more than 12 years, and the cycle life of the battery can reach 1000 cycles (60-80% DOD):

the current grid structure is shown in fig. 7 and 8, the thickness of the grid is 4.2mm, and ribs are designed by symmetrical male and female ribs on two sides; such grids suffer from the following problems: 1. the size of the joint of the longitudinal ribs and the lugs is too small, so that the joint is easy to blow when charging and discharging are carried out for a long time or large current passes through, and the stability is poor; 2. the horizontal rib of lower part can contact with processing platform or the distance is too near when scribbling the cream, and each horizontal rib of lower part becomes the mobile structure that blocks of lead plaster, and the processing of lower part needs to rely on lead plaster self to flow and fills, leads to the lead plaster can't be free, quick diffusion at vertical rib back, and the phenomenon of thin below the thick above appearing, the grid rib below exposes the muscle, influences the performance of polar plate.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a paste-coated grid for a flooded lead-acid storage battery and a preparation method thereof, and the specific technical scheme is as follows:

the paste-coated grid for the flooded lead-acid storage battery comprises a frame, wherein a lug is arranged on the outer wall of one end of the frame; a longitudinal supporting part and a transverse supporting part are arranged in the frame, and a cavity area enclosed between the longitudinal supporting part and the transverse supporting part is a filling area; the longitudinal support member comprises a first longitudinal rib and a second longitudinal rib; the first longitudinal ribs are arranged opposite to the tabs, one ends of the first longitudinal ribs, which are close to the tabs, are buffer parts, the buffer parts are of conical structures, and the width of the buffer parts is gradually shortened from one ends, which are close to the tabs, to the other ends; the buffer part of the conical structure is used for improving the charging acceptance of the polar plate and the large-current discharging performance; the second longitudinal ribs are distributed in the area of the frame except the first longitudinal ribs;

the transverse supporting part comprises reinforcing ribs and transverse ribs; the reinforcing ribs and the two ends of the transverse ribs are vertically and fixedly connected with the inner wall of the frame, the transverse ribs comprise upper ribs and lower ribs, the upper ribs and the lower ribs are symmetrically distributed in a staggered manner, the upper ribs extend towards the upper part, and the lower ribs extend towards the lower part; the reinforcing ribs are arranged between the transverse ribs; the strengthening rib to the back of vertical support component extends, the bottom of strengthening rib with the bottom surface parallel and level of frame, the thickness of strengthening rib is greater than the thickness of lower part rib, the strengthening rib is used for guaranteeing that the lead plaster can wrap up each the lower part rib.

Furthermore, the top of the frame is a surface filling area, the bottom of the frame is a back filling area, and the cross section of the reinforcing rib is of a hexagonal structure; the reinforcing rib is divided into a first upper part and a first lower part by the longitudinal supporting part, and the cross sections of the first upper part and the first lower part are isosceles trapezoids; the first upper part is connected with the longitudinal supporting part and extends into the surface filling area, the first lower part extends downwards to the back filling area, and the bottom surface of the first lower part is flush with the bottom surface of the frame; two hypotenuses of first upper segment from top to bottom outwards extend to filling area department, two hypotenuses of first lower segment shorten from top to bottom inwards.

Furthermore, the sections of the upper ribs are hexagonal; the upper rib is divided into a second upper part and a second lower part by the longitudinal supporting part, and the sections of the second upper part and the second lower part are isosceles trapezoids; the second lower part is connected with the longitudinal supporting part and extends into the back surface filling area, and the second upper part extends upwards into the surface filling area; the two bevel edges of the second upper part extend outwards from top to bottom to the filling area, the two bevel edges of the second lower part are shortened inwards from top to bottom, and the thickness of the second upper part is larger than that of the second lower part;

furthermore, the cross sections of the lower ribs are hexagonal, the lower ribs are divided into a third upper part and a third lower part by the longitudinal supporting component, and the cross sections of the third upper part and the third lower part are isosceles trapezoids; the third upper portion with vertical supporting component connect and stretch into in the surface filling district, the third lower part stretch into downwards in the back filling district, two hypotenuses of third upper portion outwards extend to from top to bottom filling district department, two hypotenuses of third lower part inwards shorten from top to bottom, the thickness of third lower part is greater than the third upper portion.

The preparation method of the paste-coated grid for the flooded lead-acid storage battery comprises the following steps:

s1, molding a grid by casting:

processing a forming groove of a buffering part in a casting die into a conical structure in advance, and processing forming grooves of transverse ribs and reinforcing ribs into a six-sided structure;

the molten material is poured into a forming groove, and after cooling and solidification, the grid can be integrally formed;

s2, pasting:

placing the formed grid on a processing platform, wherein upper ribs of transverse ribs face upwards, lower ribs face downwards, reinforcing ribs are used as a supporting structure and placed on the surface of the processing platform, a diffusion gap is ensured to be reserved between the transverse ribs and the processing platform, and a back filling area is formed between a longitudinal supporting component and the processing platform;

the lead plaster in a molten state is coated on the grid by a plaster coating machine, and the lead plaster passes through the filling area and enters the back filling area;

the lead plaster is gradually diffused through the diffusion gap until the back filling area is filled with the lead plaster, and meanwhile, each transverse rib is wrapped;

discharging continuously by the paste coating machine, filling each filling area, filling and wrapping each upper rib upwards continuously, stopping when the upper lead paste filling surface is flush with the top surface of the frame, and keeping the upper lead paste filling thickness of the longitudinal supporting component the same as the lower lead paste filling thickness;

and S3, cooling and forming.

Furthermore, all sides of the transverse ribs and the reinforcing ribs are tightly bonded with the melting coating paste.

The invention has the beneficial effects that:

1. the buffering part of the conical structure can increase the volume of the joint of the longitudinal ribs and the lugs, so that the charge acceptance capacity and the large-current discharge performance of the polar plate are improved;

2. the setting of strengthening rib can improve the intensity of grid on the one hand, and on the other hand can regard as the support component of grid for leave the diffusion clearance before horizontal rib and the processing platform, guarantee that the lead plaster can freely circulate, the lead plaster can wrap up each horizontal rib of cover completely, makes the thickness of lead plaster about can be unanimous.

Drawings

FIG. 1 shows a schematic diagram of a pasted grid structure for a flooded lead acid battery of the present invention;

fig. 2 shows a schematic view of a first longitudinal rib structure according to the invention;

figure 3 shows a schematic of a cross-sectional side view of a grid of the present invention;

FIG. 4 shows an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an enlarged schematic view of the structure at B in FIG. 3;

FIG. 6 shows an enlarged schematic view of FIG. 3 at C;

figure 7 shows a schematic of the current grid structure of the background art;

FIG. 8 shows a side cross-sectional structural view of FIG. 7;

shown in the figure: 1. frame, 2, horizontal rib, 21, upper portion rib, 22, lower part rib, 3, first vertical rib, 31, buffering part, 4, filling area, 5, utmost point ear, 6, strengthening rib, 7, second vertical rib, 8, surface filling area, 9, back filling area.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The paste coating grid for the flooded lead-acid storage battery comprises a frame 1, wherein a lug 5 is arranged on the outer wall of one end of the frame 1; a longitudinal supporting part and a transverse supporting part are arranged in the frame 1, and a cavity area enclosed between the longitudinal supporting part and the transverse supporting part is a filling area 4; the longitudinal supporting component is used for longitudinally supporting the frame 1, the transverse supporting component is used for transversely supporting the frame 1, and the filling area 4 is a lead plaster filling and storing area, so that lead plaster is embedded into the grid, and the connection strength of the lead plaster and the grid is improved;

the longitudinal support member comprises a first longitudinal rib 3 and a second longitudinal rib 7; the first longitudinal ribs 3 are arranged opposite to the tabs 5, one ends of the first longitudinal ribs 3, which are close to the tabs 5, are buffer parts 31, the buffer parts 31 are in a conical structure, and the width of the buffer parts 31 is gradually shortened from one ends, which are close to the tabs 5, to the other ends; the buffer part 31 with a conical structure is used for improving the charging acceptance capability and the large-current discharging performance of the polar plate; the second longitudinal ribs 7 are distributed in the area of the frame 1 except the first longitudinal ribs 3; the conical structure can increase the volume of the longitudinal ribs at the connection part of the longitudinal ribs and the polar lugs 5, so that the current guiding capacity of the current at the contact point is higher;

the transverse supporting part comprises a reinforcing rib 6 and a transverse rib 2; the reinforcing ribs 6 and two ends of the transverse ribs 2 are vertically and fixedly connected with the inner wall of the frame 1, the transverse ribs 2 comprise upper ribs 21 and lower ribs 22, the upper ribs 21 and the lower ribs 22 are symmetrically distributed in a staggered manner, the upper ribs 21 extend upwards, the lower ribs 22 extend downwards, and the transverse ribs are designed in a staggered manner, so that the strength of the plate frame can be improved, the plate frame has more contact surfaces with lead plaster on the upper part and the lower part, and the adhesion effect of the lead plaster is improved; the reinforcing ribs 6 are arranged between the transverse ribs 2, and the reinforcing ribs 6 are used for improving the strength of the transverse supporting part;

the reinforcing ribs 6 extend towards the back of the longitudinal supporting part and extend towards the back so that the reinforcing ribs 6 can be used as a supporting structure to support the plate lifting frame;

the bottom ends of the reinforcing ribs 6 are flush with the bottom surface of the frame 1, the thickness of the reinforcing ribs 6 is larger than that of the lower ribs 22, and the reinforcing ribs are used for ensuring that lead plaster can wrap the lower ribs;

the reinforcing ribs 6 are large in thickness and used for ensuring that the lower ribs can be supported and cannot be in direct contact with the processing platform when the reinforcing ribs are used as a supporting structure, so that lead plaster can flow in gaps between the lower ribs and the processing platform, and the lower ribs can be wrapped; the reinforcing rib 6 is used for guaranteeing the consistency of the thickness of the lead plaster with the flush of the frame body 1, so that the lead plaster cannot protrude outwards, the upper surface and the lower surface can be consistent in thickness, and the outer surface is more smooth.

As an improvement of the above technical solution, the top of the frame 1 is a surface filling region 8, the bottom of the frame 1 is a back filling region 9, the cross section of the reinforcing rib 6 is of a hexagonal structure, and the hexagonal structure can enable the reinforcing rib 6 and the lead paste to have more contact surfaces;

the reinforcing rib is divided into a first upper part and a first lower part by the longitudinal supporting part, and the cross sections of the first upper part and the first lower part are isosceles trapezoids; the first upper part is connected with the longitudinal supporting part and extends into the surface filling area 8, the first lower part extends downwards to the back filling area 9, and the bottom surface of the first lower part is flush with the bottom surface of the frame; the two bevel edges of the first upper part extend outwards from top to bottom to the filling region 4, and the two bevel edges of the first lower part shorten inwards from top to bottom;

the first upper part is designed into an isosceles trapezoid to increase the contact surface of the reinforcing rib and the lead plaster on the first upper part and improve the adhesion effect of the reinforcing rib and the lead plaster on the first upper part, and the side edge of the first upper part extends to the filling area 4 to accelerate the speed of the lead plaster passing through the filling area 4 and filling the lead plaster into the back filling area, so that the lead plaster is more smoothly circulated, the processing efficiency is improved, and the lead plaster is prevented from being blocked;

the first lower part is designed into an isosceles trapezoid to increase the contact surface of the reinforcing rib and the lead plaster at the first lower part, and the adhesion effect of the reinforcing rib and the lead plaster at the first lower part is improved; the first lower part adopts a design that the lead plaster gradually shrinks inwards from top to bottom, so that the filling amount of the lead plaster in the back filling area can be increased, the lead plaster is minimally hindered when flowing in the back filling area, the flowing and diffusing effects are higher, and the speed is higher;

the isosceles trapezoid is designed to facilitate uniform processing and ensure the flowing uniformity of the lead paste.

As an improvement of the above technical solution, the cross sections of the upper ribs 21 and the lower ribs 22 are both hexagonal; the upper ribs 21 and the lower ribs 22 are hexagonal, so that contact surfaces are increased, and the adhesion effect of lead paste is improved;

the upper rib is divided into a second upper part and a second lower part by the longitudinal supporting part, and the sections of the second upper part and the second lower part are isosceles trapezoids; the second lower part is connected with the longitudinal supporting part and extends into the back surface filling area, and the second upper part extends upwards into the surface filling area; the two bevel edges of the second upper part extend outwards from top to bottom to the filling area, the two bevel edges of the second lower part are shortened inwards from top to bottom, and the thickness of the second upper part is larger than that of the second lower part; the reason and effect of the upper ribs adopting the shape design are the same as those of the transverse ribs, so that the flow speed is accelerated, the adhesion effect is improved, and the uniformity of the flow is ensured;

the lower rib is divided into a third upper part and a third lower part by the longitudinal supporting component, and the cross sections of the third upper part and the third lower part are both isosceles trapezoids; the third upper part is connected with the longitudinal supporting part and extends into the surface filling area, the third lower part extends downwards into the back filling area, two bevel edges of the third upper part extend outwards from top to bottom to the filling area, the two bevel edges of the third lower part are shortened inwards from top to bottom, and the thickness of the third lower part is greater than that of the third upper part; the reason and effect of the lower ribs adopting the shape design are the same as those of the transverse ribs, so that the flow speed is accelerated, the adhesion effect is improved, and the uniformity of the flow is ensured;

as shown in fig. 1 and 2, fig. 1 shows a schematic diagram of a pasted grid structure for a flooded lead acid battery of the present invention; fig. 2 shows a schematic view of a first longitudinal rib structure according to the invention;

the longitudinal supporting component comprises 3 first longitudinal ribs and 5 second longitudinal ribs, the first longitudinal ribs and the second longitudinal ribs are distributed at equal intervals and have the same length, and are sequentially provided with 4 second longitudinal ribs, 3 first longitudinal ribs and 1 second longitudinal rib from left to right, and the 3 first longitudinal ribs are arranged at the input end and the output end of the tab 5; the first longitudinal ribs are in a conical shape with a wide upper part and a narrow lower part, and the width of the lower part is the same as that of the second longitudinal ribs.

As shown in fig. 3, fig. 3 shows a schematic of a side cross-sectional configuration of a grid of the present invention;

the reinforcing rib is arranged in a linear array from right to left at equal intervals, each group of transverse ribs comprises a lower rib and an upper rib which are staggered up and down, the distance between the upper rib and the lower rib is the same as the distance between each group of transverse ribs, and a reinforcing rib 6 is arranged behind each 4 groups of transverse ribs; the bottom surfaces of the reinforcing ribs 6 are flush with the bottom surface of the frame;

as shown in fig. 4, fig. 4 shows an enlarged schematic structure at a of fig. 3;

the included angle of two side edges of the second upper part is 60 degrees, and the thickness of the second upper part is 1.22 mm; the included angle of two side edges of the second lower part is 90 degrees, and the thickness of the second lower part is 0.78 mm; the width of the junction of the second upper part and the second lower part is 2.2 mm;

as shown in fig. 5, fig. 5 shows an enlarged schematic structure at B of fig. 3;

the included angle of two side edges of the third upper part is 90 degrees, and the thickness of the third upper part is 0.78 mm; the included angle of two side edges of the third lower part is 60 degrees, and the thickness of the third lower part is 1.22 mm; the width of the junction of the third upper part and the third lower part is 2.2 mm;

as shown in fig. 6, fig. 6 shows an enlarged schematic structure at C of fig. 3;

the included angle of the two side surfaces of the first upper part is 60 degrees, the thickness of the first upper part is 0.67mm, the included angle of the two side surfaces of the first lower part is 50 degrees, and the thickness of the first lower part is 1.77 mm; the width of the junction of the first upper part and the first lower part is 2.3 mm; the filling thickness of the lead paste in the back filling area and the surface filling area is 1.77 mm.

The preparation method of the paste-coated grid for the flooded lead-acid storage battery comprises the following steps:

s1, molding a grid by casting:

processing a forming groove of a buffering part in a casting die into a conical structure in advance, and processing forming grooves of transverse ribs and reinforcing ribs into a six-sided structure;

the molten material is poured into a forming groove, and after cooling and solidification, the grid can be integrally formed;

s2, pasting:

placing the formed grid on a processing platform, wherein the upper ribs 21 of the transverse ribs 2 face upwards, the lower ribs 22 face downwards, the reinforcing ribs 6 are used as supporting structures and placed on the surface of the processing platform, a diffusion gap is ensured to be reserved between the transverse ribs 2 and the processing platform, and a back filling area is formed between the longitudinal supporting component and the processing platform; the upper ribs 21 are arranged upwards to ensure that the lead plaster can smoothly flow downwards;

the lead plaster in a molten state is coated on the grid by a plaster coating machine, and the lead plaster passes through the filling area 4 and enters the back filling area 9; during filling, small parts of the lead plaster are adhered to the first upper part, the second upper part, the third upper part and the upper parts of the longitudinal supporting parts, and most of the lead plaster is guided and converged into the filling area 4 along the side surfaces of the upper parts and then passes through the filling area 4 to enter the back filling area 9;

the lead plaster is gradually diffused through the diffusion gap until the back filling area 9 is filled with the lead plaster, and meanwhile, each transverse rib 2 is wrapped; after the lead plaster enters the back filling area 9, the lead plaster gradually penetrates through each diffusion gap to diffuse all around, each transverse rib is wrapped in the process of continuous filling and accumulation, the side surfaces of the first lower part, the second lower part and the third lower part cannot block the lead plaster, so that the diffusion speed of the lead plaster is higher, and after the lead plaster is filled for 1.77mm, the whole back coating area 9 can be smeared;

the coating machine continuously discharges materials, the filling areas 4 are filled with the materials, then the upper ribs 21 are continuously filled and wrapped upwards, and the coating machine stops when the upper lead plaster filling surface is flush with the top surface of the frame, the thickness of the upper lead plaster is 1.77mm, and the upper lead plaster filling thickness of the longitudinal supporting component is the same as the lower lead plaster filling thickness;

and S3, cooling and forming.

As an improvement of the above technical solution, the lateral surfaces of the transverse ribs 21 and the reinforcing ribs 6 are closely adhered to the molten coating paste; each side surface is used to improve the adhesive strength.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.