CN113120095A - Light truck breast board and processing technology thereof - Google Patents
Light truck breast board and processing technology thereof Download PDFInfo
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- CN113120095A CN113120095A CN202110604355.1A CN202110604355A CN113120095A CN 113120095 A CN113120095 A CN 113120095A CN 202110604355 A CN202110604355 A CN 202110604355A CN 113120095 A CN113120095 A CN 113120095A
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- 210000000481 breast Anatomy 0.000 title claims abstract description 57
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 238000005096 rolling process Methods 0.000 claims abstract description 37
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000001962 electrophoresis Methods 0.000 description 13
- 238000004458 analytical method Methods 0.000 description 5
- 239000000565 sealant Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/02—Platforms; Open load compartments
- B62D33/023—Sideboard or tailgate structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the technical field of carriage fenders, in particular to a light truck fenders and a processing technology thereof; the fence is of a profile structure and comprises a profile main body, the profile main body comprises a panel, and a first closed cavity and a second closed cavity which penetrate through the length direction of the profile main body are arranged at two ends of the panel; the first closed cavity and the second closed cavity are respectively arranged to protrude towards the opposite sides of the panel, the weight of the breast board is reduced, the bending strength is improved, the corrosion is avoided, and the appearance is attractive; the processing technology comprises the working procedures of steel coil uncoiling, punching, rolling and semi-forming, gluing, spot welding and cutting, and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of carriage fenders, in particular to a light truck fenders and a processing technology thereof.
Background
The compartment of the pickup truck is used for loading cargo, and usually a balustrade is provided on the compartment for loading cargo. At present, the breast board in the market mainly has two structures of 'transverse corrugation' or 'flat steel plate + framework welding'. The breast board with the transverse corrugated structure is adopted, so that the lines are more, and the structure is messy; the weight is large; the inside of the upper and lower sealing cavities can not be electrophoresed, so that the upper and lower sealing cavities are easy to rust; the main processing technology of the transverse corrugation is steel coil flattening, rolling forming, spot welding, forming and gluing, wherein the gluing process is that manual gluing and sealing are carried out after rolling forming, so that the sealant is exposed, the attractiveness is poor, and the phenomenon of uneven gluing is easy to occur. Adopt the breast board of "flat steel sheet + skeleton welding" structure, the side door of welding a plurality of strengthening ribs promptly on the flat board, the aesthetic property is poor, and weight is big, and the welding volume is big, very easily appears warping after the welding finishes, and the later stage needs carry out the plastic, causes production efficiency to hang down.
Disclosure of Invention
Aiming at the problems of large weight, easy deformation, easy corrosion and poor aesthetic property of the breast board in the prior art, the invention provides the light truck breast board, which reduces the weight, improves the bending strength, avoids corrosion and has beautiful appearance; the invention also provides a processing technology, full-automatic production is realized, and the production efficiency is improved.
The invention provides a light truck breast board which is of a profile structure and comprises a profile main body, wherein the profile main body comprises a panel, and a first closed cavity and a second closed cavity which penetrate through the length direction of the profile main body are arranged at two ends of the panel; the first closed cavity and the second closed cavity are respectively arranged to protrude towards the opposite sides of the panel.
Further, the second closed cavity comprises a cavity A and a cavity B, the cavity A is communicated with the cavity B to form an L shape, the cavity B is located at the end of the panel, and the distance L from the top of the cavity A to the panel is greater than the distance I from the top of the cavity B to the panel. On the one hand, the upper hinge which can be connected with the frame of the bottom plate is welded with the second closed cavity of the breast board, the L-shaped structure can shield the welding line, the appearance is attractive, and on the other hand, the bending strength of the breast board can be improved.
Further, the middle part of the panel is in a large arc shape when viewed from the end face of the panel.
Further, first closed cavity includes first lateral wall, second lateral wall, third lateral wall and fourth lateral wall, first lateral wall and second lateral wall pass through circular arc smooth connection, second lateral wall and third lateral wall pass through the chamfer and connect, the fourth lateral wall is provided with the extension section, the extension section with panel fixed connection, the fourth lateral wall with first lateral wall passes through the chamfer and connects, fourth lateral wall middle part is provided with first recess, the sunken direction of first recess is towards in the first closed cavity.
Furthermore, a second groove and a third groove are sequentially formed in the bottom of the panel from the first closed cavity to the second closed cavity.
Furthermore, the first closed cavity and the second closed cavity are both provided with liquid leakage holes. During the carriage electrophoresis, the electrophoresis liquid can enter into inside first closed cavity and the second closed cavity from the weeping hole for the inside abundant electrophoresis of first closed cavity and second closed cavity prevents that the carriage from using a period of back, and the rainwater enters into closed intracavity portion, causes closed cavity rust and corrodes.
Furthermore, the size of the liquid leakage holes is 8mm by 12mm long round holes, and the distance between the liquid leakage holes is 500 mm. The aperture of the liquid leakage hole is 8 mm; the diameter is too small, so that the conductivity of the second closed cavity is poor, the electrophoresis film is thin, even the local electrophoresis is not performed, and the corrosion prevention quality is reduced; too large a hole diameter results in a reduction in the strength of the breast plate. The size of the liquid leakage hole can ensure that the first closed cavity and the second closed cavity carry out electrophoresis fully.
Furthermore, the fence plate is made of high-strength steel with the thickness of 1.0mm and the yield strength of 700 MPa. The weight is reduced on the premise of ensuring the strength of the breast board, and the lightweight of the breast board is ensured.
Further, the breast board is processed by adopting integrated roll forming of steel coils. Full-automatic production, production efficiency is high.
The invention also provides a processing technology of the light truck sideboard, which comprises the following steps:
(1) steel coil uncoiling plate
The strip steel coil is arranged on a reel of a cantilever uncoiler, and the steel coil is flattened by the uncoiler and then is automatically output to a conveying belt;
(2) punching hole
After the steel coil is uncoiled, conveying the steel coil to a punching machine through a conveying belt, wherein the conveying speed of the conveying belt is 2.3-2.5 m/min, the punching machine punches liquid leakage holes at positions 107mm away from the edges of two sides of the steel plate, the punching interval time is 10-12 s, and the punching interval is not more than 500 mm; the liquid leakage hole is in an oblong shape, and the size of the liquid leakage hole is 8mm by 12 mm;
through the process, after the side plates are formed, long circular liquid leakage holes are formed in the lower plane at intervals of 500mm, and electrophoresis liquid can enter the closed cavity from the long circular holes during electrophoresis of the carriage, so that the interior of the closed cavity is fully electrophoresed, and rainwater is prevented from entering the closed cavity from the blocking plates on the two sides of the side plates after the carriage is used for a period of time, and the closed cavity is prevented from rusting;
(3) roll forming
The rolling unit is driven by a chain wheel and a chain and is provided with thirty-five groups of rolling wheels and four sets of guiding devices; after punching, conveying the steel plate to a rolling unit for rolling and extrusion forming: from the first group of rollers, firstly, carrying out roll forming on the first closed cavity of the breast board and the first groove of the breast board; starting a seventh group of rollers, and performing roll forming on the second closed cavity; starting a ninth group of rollers, and performing roll forming on the second groove and the third groove; four sets of guide wheels are continuously arranged between the twenty-fourth group of rollers and the twenty-fifth group of rollers, so that the first closed cavity, the first groove, the second closed cavity, the middle large arc, the second groove and the third groove are guided and formed; after the breast board passes through the thirty-fifth group of rolling wheels, all structures are completely molded, including a first closed cavity, a second closed cavity, a middle great arc of the breast board and three through long grooves (namely a first groove, a second groove and a third groove);
(4) glue applying device
Automatic gluing machines are arranged on two sides of the rolling lines between the twenty-seventh group of rolling wheels and the twenty-eighth group of rolling wheels, at the moment, the first closed cavity and the second closed cavity are basically formed, but the steel plates of the closed cavities are not attached, and continuous gluing is carried out between the steel plates which are not attached by the gluing machines;
the process solves the problems of uneven gluing and low efficiency caused by manual gluing after roll forming; the sealant is arranged inside the steel plate joint seam, and no residual sealant is exposed, so that the sealing structure can prevent rainwater from permeating into the closed cavity to cause rusting and has an attractive effect;
(5) spot welding
Automatic spot welding manipulators are arranged on two sides of a rolling line between the thirty-second group of rolling wheels and the thirty-third group of rolling wheels to perform spot welding on the joint of the first closed cavity and the second closed cavity steel plate, so that the welding is firm, and the welding seam is uniform and attractive; the diameter of the spot weld is
The spacing of the spot welds is 100 mm;
(6) cutting
According to different breast board lengths, the saw blade is utilized to cut off and cut the breast board formed by roll forming, and burrs at two ends of the breast board are polished.
The beneficial effect of the invention is that,
(1) the whole body of the breast board provided by the invention adopts a streamline design, and the appearance is attractive; the fence plate is made of high-strength steel, so that the weight is reduced; the first closed cavity and the second closed cavity are positioned on two sides of the panel, so that the bending strength and the attractiveness are improved, the first closed cavity is provided with a first groove, the bottom of the panel is provided with a second groove and a third groove, the second closed cavity is integrally in an inverted L shape, the bending strength of the breast board is effectively improved, and the second groove and the third groove also have an anti-expansion effect; the first closed cavity and the second closed cavity can be fully electrophoresed by arranging the liquid leakage holes in the first closed cavity and the second closed cavity, so that rusting and corrosion are prevented; the production efficiency is high by adopting integral rolling forming;
(2) the processing technology of the breast board provided by the invention has the advantages that the full-automatic production is realized according to the structure of the breast board, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of the structure of a pick-up truck balustrade provided in example 1;
FIG. 2 is a schematic view of the installation and use of a second closed cavity provided in the embodiment 1;
FIG. 3 is a schematic view showing the positions of weep holes in a second enclosed cavity provided in example 2;
FIG. 4 is a schematic view of a glue dispensing position provided in example 3;
FIG. 5 is a schematic view of a spot welding position provided in example 3;
in the figure, 1, a first closed cavity; 11. a first side wall; 12. a second side wall; 13. a third side wall; 14. a fourth side wall; 15. an extension section; 141. a first groove; 2. a panel; 21. a second groove; 22. a third groove; 3. a second enclosed cavity; 31. a cavity B; 32. a cavity A; 4. a weep hole; 5. an upper hinge; 6. a bottom plate frame.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A light truck breast board, refer to figure 1, the whole is streamlined, the appearance is esthetic; the fence plate is made of high-strength steel with the thickness of 1.0mm and the yield strength of 700MPa by integrally rolling and forming, so that the weight is reduced, and the high bending strength is ensured;
the breast board is of a profile structure and comprises a profile main body, the profile main body comprises a panel 2, and a first closed cavity 1 and a second closed cavity 3 penetrating through the length direction of the profile main body are arranged at two ends of the panel; the first closed cavity 1 and the second closed cavity 3 are respectively arranged to protrude towards the opposite sides of the panel 2, and in order to improve the bending strength and the attractiveness, the middle part of the panel 2 is designed to be a large arc when viewed from the end face of the panel; the first closed cavity 1 comprises a first side wall 11, a second side wall 12, a third side wall 13 and a fourth side wall 14, the first side wall 11 and the second side wall 12 are connected smoothly through an arc, the second side wall 12 and the third side wall 13 are connected through a chamfer, the fourth side wall 14 is provided with an extension section 15, the extension section 15 is fixedly connected with the panel 2, the fourth side wall 14 is connected with the first side wall 11 through a chamfer, a first groove 141 is arranged in the middle of the fourth side wall 14, and the depression direction of the first groove 141 faces the inside of the first closed cavity 1; the second closed cavity 3 comprises a cavity A32 and a cavity B31, the cavity A32 is communicated with the cavity B31 to form an L shape, the cavity B31 is positioned at the end part of the panel 2, and the distance L from the top of the cavity A32 to the panel is greater than the distance I from the top of the cavity B to the panel; on one hand, an upper hinge 5 which can be connected with a bottom plate frame 6 is welded with a second closed cavity of the breast board (see figure 2 in particular), the L shape can shield the welding line, the appearance is attractive, and on the other hand, the bending strength of the breast board can be improved;
the middle of the fourth side wall 14 is provided with a first groove 141, the sinking direction of the first groove 141 faces the first closed cavity 1, the bottom of the panel 2 is provided with a second groove 21 and a third groove 22 from the first cavity 1 to the second cavity 3, the sinking directions of the second groove 21 and the third groove 22 are the same and are arranged on the same side, the sinking directions of the second groove 21 and the third groove 22 face the second closed cavity 3, that is, the first groove is inwards concave, the second groove and the third groove are outwards concave, and the bending strength is better improved by designing in different directions.
And (3) carrying out finite element analysis on the obtained sideboard under the condition of ultimate load (mark load is K, K is a safety coefficient and is more than 1) to obtain that the maximum deformation of the sideboard is 7mm, the maximum stress is 342MPa, and the bending resistance of the sideboard is good.
Example 2
On the basis of the embodiment 1, the first closed cavity 1 and the second closed cavity 3 are further provided with liquid leakage holes 4, the size of each liquid leakage hole 4 is 8 mm-12 mm long round holes, and the distance between every two liquid leakage holes 4 is 500 mm; during the carriage electrophoresis, the electrophoresis liquid can enter into inside first closed cavity and the second closed cavity from the weeping hole for the inside abundant electrophoresis of first closed cavity and second closed cavity prevents that the carriage from using a period of back, and the rainwater enters into closed intracavity portion, causes closed cavity rust and corrodes.
Example 3
A processing technology of a light truck breast board calculates the width of an unfolded material according to the specific section size of the breast board, purchases a strip steel coil with the same width from the market, and sequentially configures an uncoiler, a punching machine, a rolling forming machine set, an automatic gluing machine, an automatic spot welding machine and a cutting machine according to the feeding direction of the coil steel; the method specifically comprises the following steps:
(1) steel coil uncoiling plate
The strip steel coil is arranged on a reel of a cantilever uncoiler, and the steel coil is flattened by the uncoiler and then is automatically output to a conveying belt;
(2) punching hole
After the steel coil is uncoiled, the steel coil is conveyed to a punching machine through a conveying belt, the conveying speed of the conveying belt is 2.5m/min, the punching machine punches leakage holes at a position 107mm away from the edge of the steel plate, the punching interval time is 12s, and the punching interval is ensured to be 500 mm; the liquid leakage hole is in an oblong shape, and the size of the liquid leakage hole is 8mm by 12 mm;
through the process, after the breast board is formed, long circular liquid leakage holes are formed at intervals of 500mm on the upper plane and the lower plane, and electrophoresis liquid can enter the closed cavity from the long circular holes during electrophoresis of the carriage, so that the interior of the closed cavity is fully electrophoresed, and rainwater is prevented from entering the closed cavity from the blocking boards on the two sides of the breast board after the carriage is used for a period of time, and the closed cavity is prevented from rusting;
(3) roll forming
The rolling unit is driven by a chain wheel and a chain and is provided with thirty-five groups of rolling wheels and four sets of guiding devices; after punching, conveying the steel plate to a rolling unit for rolling and extrusion forming: from the first group of rollers, firstly, carrying out roll forming on the first closed cavity of the breast board and the first groove of the breast board; starting a seventh group of rollers, and performing roll forming on the second closed cavity; starting a ninth group of rollers, and performing roll forming on the second groove and the third groove; four sets of guide wheels are continuously arranged between the twenty-fourth group of rollers and the twenty-fifth group of rollers, so that the first closed cavity, the first groove, the second closed cavity, the middle large arc, the second groove and the third groove are guided and formed; after the breast board passes through the thirty-fifth group of rolling wheels, all structures are completely molded, and the breast board comprises a first closed cavity, a second closed cavity, a middle large arc of the breast board and three through long grooves of the breast board;
(4) glue applying device
Automatic gluing machines are arranged on two sides of the rolling lines between the twenty-seventh group of rolling wheels and the twenty-eighth group of rolling wheels, at the moment, the first closed cavity and the second closed cavity are basically formed, but the steel plates of the closed cavities are not attached, continuous gluing is carried out between the steel plates which are not attached by the gluing machines, and the gluing positions are shown in figure 4;
the process solves the problems of uneven gluing and low efficiency caused by manual gluing after roll forming; the sealant is arranged inside the joint of the steel plate, and no residual sealant is exposed, so that the sealing structure can prevent rainwater from permeating into the closed cavity to cause rusting, and has an attractive effect.
(5) Spot welding
Between the thirty-second and thirty-third press wheels, automatic spot welding manipulators are arranged on two sides of the rolling line to perform spot welding on the joint of the first closed cavity and the second closed cavity steel plate (the spot welding positions are shown in figure 5); the welding is firm, and the welding seam is uniform and beautiful; the diameter of the spot weld is
The spacing of the spot welds is 100 mm;
(6) cutting
According to different breast board lengths, the saw blade is utilized to cut off and cut the breast board formed by roll forming, and burrs at two ends of the breast board are polished to obtain the breast board.
Comparative example 1
Compared with the embodiment 1, the difference is that the first closed cavity is not provided with the first groove, and the bottom of the panel is not provided with the second groove and the third groove.
Under the same loading conditions as those of the example 1, the obtained sideboard was subjected to finite element analysis, and the maximum deformation of the sideboard was 12mm and the maximum stress was 403 MPa.
Comparative example 2
Compared with the embodiment 1, the difference is that the second closed cavity is not improved, is not inverted L-shaped and is designed into a conventional cavity.
Under the same load condition as that of the embodiment 1, the obtained sideboard is subjected to finite element analysis, and the maximum deformation of the sideboard is 10mm, and the maximum stress is 387 MPa.
Comparative example 3
Compared with the embodiment 1, the difference lies in that the first closed cavity is not provided with the first groove, the bottom of the panel is not provided with the second groove and the third groove, and the second closed cavity is not improved and is designed as a conventional cavity.
Under the same loading conditions as those of example 1, the obtained breast board was subjected to finite element analysis, and the maximum deformation of the breast board was 17mm, and the maximum stress was 434 MPa.
Bending strength analysis performed by combining the embodiment 1 and the comparative examples 1 to 3 shows that the first closed cavity and the second closed cavity are located on two sides of the panel, so that bending strength and attractiveness are improved, the first closed cavity is provided with the first groove, the bottom of the panel is provided with the second groove and the third groove, the second closed cavity is in an inverted L shape, bending strength of the breast board is effectively improved, and the second groove and the third groove also have an anti-expansion effect.
The present invention has been described in detail by way of preferred embodiments, but the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The light truck breast board is characterized in that the breast board is of a profile structure and comprises a profile main body, the profile main body comprises a panel (2), and a first closed cavity (1) and a second closed cavity (3) which penetrate through the length direction of the profile main body are arranged at two ends of the panel (2); the first closed cavity (1) and the second closed cavity (3) are respectively arranged to protrude towards the opposite sides of the panel (2).
2. The pickup truck fence according to claim 1, wherein the second closed cavity (1) comprises an A cavity (32) and a B cavity (31), the A cavity (32) and the B cavity (31) are communicated to form an L shape, the B cavity (31) is positioned at the end of the panel, and the distance L from the top of the A cavity (32) to the panel (2) is larger than the distance I from the top of the B cavity (31) to the panel (2).
3. The pickup fence as set forth in claim 1, wherein the central portion of the face plate (2) is in the shape of a large circular arc as viewed from the end face of the face plate.
4. The pickup truck fence according to claim 1, wherein the first closed cavity (1) comprises a first side wall (11), a second side wall (12), a third side wall (13) and a fourth side wall (14), the first side wall (11) and the second side wall (12) are smoothly connected through a circular arc, the second side wall (12) and the third side wall (13) are connected through a chamfer, the fourth side wall (14) is provided with an extension (15), the extension (15) is fixedly connected with the panel (2), the fourth side wall (14) is connected with the first side wall (11) through a chamfer, a first groove (141) is arranged in the middle of the fourth side wall (14), and the first groove (141) is recessed towards the inside of the first closed cavity (1).
5. The pickup fence as recited in claim 1, wherein said panel (2) is provided with a second groove (21) and a third groove (22) at the bottom thereof in sequence from the first closed cavity (1) to the second closed cavity (3).
6. The pickup truck fence as set forth in claim 5, wherein said second groove (21) is recessed in the same direction as said third groove (22) and disposed on the same side, and said first groove (141) is recessed in the opposite direction from said second groove (21).
7. The pickup fence as recited in claim 1, wherein said first closed cavity (1) and said second closed cavity (3) are provided with weep holes (4).
8. The pickup truck fence according to claim 7, wherein said weep holes (4) are 8mm by 12mm oblong holes, and the weep holes (4) are spaced 500mm apart.
9. The process for manufacturing a pick-up for a pickup truck as claimed in any one of claims 1 to 8, wherein the process comprises the steps of unwinding steel coil, punching, rolling and half forming, gluing, spot welding and cutting.
10. The processing technology of claim 9, which specifically comprises the steps of:
(1) steel coil uncoiling plate
The strip steel coil is arranged on a reel of a cantilever uncoiler, and the steel coil is flattened by the uncoiler and then is automatically output to a conveying belt;
(2) punching hole
After the steel coil is uncoiled, conveying the steel coil to a punching machine through a conveying belt, wherein the conveying speed of the conveying belt is 2.3-2.5 m/min, the punching machine punches liquid leakage holes at positions 107mm away from the edges of two sides of the steel plate, and the punching interval time is 10-12 s;
(3) roll forming
The rolling unit is driven by a chain wheel and a chain and is provided with thirty-five groups of rolling wheels and four sets of guiding devices; after punching, conveying the steel plate to a rolling unit for rolling and extrusion forming: from the first group of rollers, firstly, carrying out roll forming on the first closed cavity of the breast board and the first groove of the breast board; starting a seventh group of rollers, and performing roll forming on the second closed cavity; starting a ninth group of rollers, and performing roll forming on the second groove and the third groove; four sets of guide wheels are continuously arranged between the twenty-fourth to twenty-fifth groups of rollers, so that the first closed cavity, the first groove, the second closed cavity, the middle large arc, the second groove and the third groove are guided and formed; after the breast board passes through the thirty-fifth group of rolling wheels, all structures are completely molded, and the breast board comprises a first closed cavity, a second closed cavity, a middle large arc of the breast board and three through long grooves of the middle large arc;
(4) glue applying device
Automatic gluing machines are arranged on two sides of the rolling lines between the twenty-seventh group of rolling wheels and the twenty-eighth group of rolling wheels, at the moment, the first closed cavity and the second closed cavity are basically formed, but the steel plates of the closed cavities are not attached, and continuous gluing is carried out between the steel plates which are not attached by the gluing machines;
(5) spot welding
Between the thirty-second and thirty-third groups of rolling wheels, automatic spot welding manipulators are arranged on two sides of a rolling line to perform spot welding on the joint of the first closed cavity and the second closed cavity steel plate; the diameter of the spot weld is
The spacing of the spot welds is 100 mm;
(6) cutting
According to different breast board lengths, the saw blade is utilized to cut off and cut the breast board formed by roll forming, and burrs at two ends of the breast board are polished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604355.1A CN113120095A (en) | 2021-05-31 | 2021-05-31 | Light truck breast board and processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604355.1A CN113120095A (en) | 2021-05-31 | 2021-05-31 | Light truck breast board and processing technology thereof |
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| CN113120095A true CN113120095A (en) | 2021-07-16 |
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| CN202110604355.1A Pending CN113120095A (en) | 2021-05-31 | 2021-05-31 | Light truck breast board and processing technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644441A (en) * | 2003-12-24 | 2005-07-27 | 铃木株式会社 | Side board for truck and its manufacture |
| US20050242620A1 (en) * | 2004-04-13 | 2005-11-03 | Mcnulty Frank G | Two-piece side and floor panel arrangement for box assembly |
| CN200948817Y (en) * | 2006-04-30 | 2007-09-19 | 杨碧 | Compartment integral sideboard |
| CN201545081U (en) * | 2009-11-09 | 2010-08-11 | 北汽福田汽车股份有限公司 | Edge plate |
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| CN212243590U (en) * | 2020-05-20 | 2020-12-29 | 三友车辆技术开发（南京）有限公司 | Transverse corrugated type carriage side door |
| CN112158157A (en) * | 2020-08-13 | 2021-01-01 | 凌云西南工业有限公司 | Double-central-support-leg tubular beam and forming method thereof |
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| CN202827802U (en) * | 2012-10-11 | 2013-03-27 | 中国重汽集团济南动力有限公司 | Boxcar breast board |
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| CN203996493U (en) * | 2014-08-18 | 2014-12-10 | 安徽江淮汽车股份有限公司 | A kind of picard cargo box |
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Application publication date: 20210716 |