Bending device for automobile plate machining

Abstract

The invention relates to the technical field of metal plate non-cutting machining, in particular to a bending device for automobile plate machining. The technical problems that when an existing bending device bends a plate, the plate is not convenient to position from multiple directions, so that bending of the plate is not accurate enough, friction generated between the plate and a die is large when the plate is bent, and when the existing bending device bends the plate, the plate is not convenient to position from multiple directions, so that the plate is not convenient to bend are solved. In the prior art, the friction part of the plate is difficult to lubricate, so that the plate is easy to wear during bending, and the bending effect is poor. The invention discloses a bending device for automobile plate processing. The rack is fixedly connected to the static mold; the hydraulic rod is fixedly connected to the top of the rack; and the lifting frame is connected to the rack in a sliding manner. According to the plate bending machine, lubricating oil is sprayed on a plate before the plate is bent, so that the rubbed part of the plate is lubricated, the plate is not prone to abrasion during bending, and therefore the bending effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of non-cutting processing of metal plates, and in particular to a bending device for processing automobile plates. Background Art

[0002] In the field of automobile manufacturing, some parts are produced through sheet metal bending technology. The bending process bends metal sheets into specific shapes according to design requirements. It can not only realize the forming of complex geometric structures, but also ensure the strength and lightness of parts. When bending the sheet, the sheet is placed on the bending device, and then the sheet is extruded by the dynamic die and the static die to complete the bending of the sheet.

[0003] Since the plate is easily offset when being bent, and the current bending device is not convenient for continuously positioning the plate from multiple directions when bending the plate, resulting in inaccurate bending of the plate. In addition, since the friction between the plate and the mold is large when bending, the current bending device is difficult to lubricate the frictional parts of the plate when bending the plate, resulting in the plate being easily worn when bending, resulting in poor bending effect. Summary of the invention

[0004] In order to overcome the above shortcomings, the present invention provides a bending device for automobile sheet metal processing, which can position the sheet metal from multiple directions to make the bending of the sheet metal more precise and lubricate the frictional parts of the sheet metal to make the sheet metal less susceptible to wear during bending, thereby enhancing the bending effect.

[0005] The technical implementation scheme of the present invention is: a bending device for automobile sheet processing, comprising: static mold; The frame is fixed on the static mold; A hydraulic rod, fixed to the top of the frame; A lifting frame is slidably connected to the frame, and the lifting frame is fixedly connected to the telescopic rod of the hydraulic rod; The movable mold is fixed to the middle part of the lifting frame; The plate is placed on the static mold; The positioning mechanism is arranged on the static mold; The deviation correction mechanism is arranged on the positioning mechanism; The ejection mechanism is arranged on the frame.

[0006] More preferably, the positioning mechanism includes: two positioning plates respectively connected to the two sides of the static mold in a sliding manner, and grooves are provided on the sides of the two positioning plates close to each other; connecting arms are fixedly connected to the two positioning plates, and guide grooves are provided on the two connecting arms; two connecting columns are fixedly connected to the lifting frame, and the two connecting columns are respectively slidably connected to the guide grooves of the two connecting arms.

[0007] More preferably, the correction mechanism includes: four crankshafts, two of which are rotatably connected to each positioning plate, the two crankshafts on the same positioning plate form a group, and strip grooves are opened on the four crankshafts; rotating clamps are fixedly connected to the four crankshafts, and the two rotating clamps on the same group of crankshafts form a group; contact pieces are fixedly connected to the four rotating clamps, and the two contact pieces on the same group of rotating clamps form a group; two connecting frames are fixedly connected to the two sides of the static mold, respectively, the two connecting frames on the same side form a group, and the four connecting frames are slidingly connected to the strip grooves of the four crankshafts.

[0008] More preferably, the contact piece is made of rubber.

[0009] More preferably, the ejection mechanism includes: a first piston cylinder fixedly connected to the frame; an extrusion frame fixedly connected to the lifting frame; a first piston rod slidably connected in the first piston cylinder, the bottom of the first piston rod is in contact with the extrusion frame, and a through hole is opened in the middle of the first piston rod; a pressure spring is connected between the first piston rod and the first piston cylinder; a connecting pipe is connected to the bottom of the first piston rod, and the connecting pipe is connected to the through hole of the first piston rod; two second piston cylinders are fixedly connected to the static mold, and the two second piston cylinders are connected to the connecting pipe; and second piston rods are slidably connected in the two second piston cylinders.

[0010] More preferably, a lubrication mechanism is further included for lubricating the plate, and the lubrication mechanism is arranged on the static mold, and the lubrication mechanism includes: an oil storage tank fixedly connected to the static mold; the oil storage tank is connected to a first diversion pipe, and the first diversion pipe is connected to the inside of the oil storage tank; both ends of the first diversion pipe are respectively connected to a first one-way valve; the two first one-way valves are each connected to a third piston cylinder; two dispersion pipes are fixed in the static mold; sponges are installed on the two dispersion pipes, and both sponges are in contact with the plate; the two dispersion pipes are respectively connected to the second one-way valve between the two third piston cylinders; the two third piston cylinders are each slidably connected to a third piston rod; the two third piston rods are respectively connected to the two third piston cylinders with tension springs.

[0011] More preferably, the oil storage tank is provided with a filling port.

[0012] More preferably, it also includes a top component for spraying lubricating oil from the top, and the top component is arranged on the connecting arm, and the top component includes: two diverter racks respectively fixed to the two connecting arms; a plurality of nozzles are respectively installed on the two diverter racks at even intervals; the two diverter racks are each connected to a fourth one-way valve; the two fourth one-way valves are each connected to a fourth piston cylinder; the two sides of the first diverter pipe are respectively connected to the second diverter pipe; the two second diverter pipes are respectively connected to the two fourth piston cylinders with a third one-way valve; the two fourth piston cylinders are each slidably connected with a fourth piston rod, and the two fourth piston rods are respectively fixed to the two sides of the frame.

[0013] More preferably, the method further comprises a scraper fixed between the two second piston rods, wherein the scraper is in contact with the static mold.

[0014] Compared with the prior art, the present invention has the following advantages: 1. Before bending the plate, the plate is supported from both ends by a positioning plate and the plate is corrected from both sides, thereby positioning the plate from multiple directions, making the bending of the plate more precise, thereby enhancing the bending effect.

[0015] 2. After the plate is bent, the two second piston rods push the plate out of the static die, and then automatically remove the bent plate, which shortens the production cycle and improves efficiency; while the scraper is reset, the debris attached to the static die will be scraped off, thereby preventing the debris from crushing the plate and affecting the quality of the plate.

[0016] 3. Before bending the plate, spray lubricating oil on the plate to lubricate the friction parts of the plate, so that the plate is not easily worn during bending, thereby further enhancing the bending effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the positioning mechanism of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the deviation correcting mechanism and the positioning mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the deviation correction mechanism of the present invention.

[0022] Figure 6 It is a cross-sectional three-dimensional structural schematic diagram of the ejection mechanism of the present invention.

[0023] Figure 7 It is a partially cutaway three-dimensional structural schematic diagram of the ejection mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of a partially disassembled three-dimensional structure of the ejection mechanism of the present invention.

[0025] Fig. 9 It is a three-dimensional structural schematic diagram of the lubrication mechanism and the top component of the present invention.

[0026] Fig.10 It is a partial cross-sectional three-dimensional structural schematic diagram of the lubrication mechanism of the present invention.

[0027] Fig.11 It is a schematic diagram of a partially disassembled three-dimensional structure of the lubrication mechanism of the present invention.

[0028] Fig.12 It is a schematic diagram of the cross-sectional three-dimensional structure of the top component of the present invention.

[0029] Fig.13 It is a schematic diagram of the split three-dimensional structure of the top component of the present invention.

[0030] Among them, the above-mentioned drawings include the following figure marks: 1, static mold, 2, frame, 3, hydraulic rod, 4, lifting frame, 5, movable mold, 6, plate, 7, positioning mechanism, 71, positioning plate, 72, connecting arm, 73, connecting column, 8, correction mechanism, 81, crankshaft, 82, rotating clamp, 83, contact piece, 84, connecting frame, 9, ejection mechanism, 91, first piston cylinder, 92, extrusion frame, 93, first piston rod, 94, pressure spring, 95, connecting pipe, 96, second piston cylinder, 97, second piston rod , 10. Lubrication mechanism, 101. Oil storage tank, 102. First diverter pipe, 1031. First one-way valve, 1032. Second one-way valve, 104. Third piston cylinder, 105. Dispersion tube, 106. Sponge, 107. Third piston rod, 108. Tension spring, 11. Top assembly, 111. Diverter rack, 112. Nozzle, 113. Second diverter pipe, 1141. Third one-way valve, 1142. Fourth one-way valve, 115. Fourth piston cylinder, 116. Fourth piston rod, 12. Scraper. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1: A bending device for automobile sheet processing, such as Figure 1-Figure 8 As shown, including: Static mold 1; The frame 2 is connected to the static mold 1 by bolts; The hydraulic rod 3 is connected to the top of the frame 2 by bolts; A lifting frame 4 is slidably connected to the frame 2, and the lifting frame 4 is connected to the telescopic rod of the hydraulic rod 3 by bolts; The movable mold 5 is connected to the middle part of the lifting frame 4 by bolts; The plate 6 is placed on the static mold 1; A positioning mechanism 7 is provided on the static mold 1; A deviation correction mechanism 8 is provided on the positioning mechanism 7; The ejection mechanism 9 is arranged on the frame 2 .

[0033] The positioning mechanism 7 includes: two positioning plates 71 respectively connected to the two sides of the static mold 1 in a sliding manner, and the two positioning plates 71 have grooves on their sides close to each other, and the two positioning plates 71 are used to position the plate 6; the two positioning plates 71 are connected to connecting arms 72 by bolts, and the two connecting arms 72 are provided with guide grooves; the lifting frame 4 is connected to two connecting columns 73 by bolts, and the two connecting columns 73 are respectively connected to the guide grooves of the two connecting arms 72 in a sliding manner, and the connecting columns 73 are used to drive the positioning plate 6 to move by squeezing the guide grooves of the connecting arms 72.

[0034] The correcting mechanism 8 includes: four crankshafts 81, two of which are rotatably connected to each positioning plate 71, the two crankshafts 81 on the same positioning plate 71 form a group, and the four crankshafts 81 are all provided with strip grooves; the four crankshafts 81 are all connected with rotating clamps 82 through key grooves, and the two rotating clamps 82 on the same group of crankshafts 81 form a group; the four rotating clamps 82 are all connected with contact pieces 83 through bolts, and the two contact pieces 83 on the same group of rotating clamps 82 form a group, and the rotating clamps 82 are used to press against the plate 6 through the contact pieces 83; two connecting frames 84 are respectively connected to the two sides of the static mold 1 through bolts, and the two connecting frames 84 on the same side form a group, and the four connecting frames 84 are respectively slidably connected to the strip grooves of the four crankshafts 81, and the connecting frames 84 are used to drive the rotating clamps 82 to be rotatably connected by extruding the strip grooves of the crankshafts 81.

[0035] The contact piece 83 is made of rubber material, and the rubber contact piece 83 is used to reduce the wear on the plate 6 .

[0036] The ejection mechanism 9 includes: a first piston cylinder 91 connected to the frame 2 by bolts; an extrusion frame 92 connected to the lifting frame 4 by bolts; a first piston rod 93 is slidably connected in the first piston cylinder 91, the bottom of the first piston rod 93 is in contact with the extrusion frame 92, a through hole is opened in the middle of the first piston rod 93, and the extrusion frame 92 is used to squeeze the first piston rod 93 to move; a pressure spring 94 is connected between the first piston rod 93 and the first piston cylinder 91; a connecting pipe 95 is connected to the bottom of the first piston rod 93, and the connecting pipe 95 is connected to the through hole of the first piston rod 93; two second piston cylinders 96 are connected to the static mold 1 by bolts, and the two second piston cylinders 96 are connected to the connecting pipe 95; the two second piston cylinders 96 are slidably connected with second piston rods 97, and the second piston rod 97 is used to eject the plate.

[0037] The scraper 12 is also included, which is connected between the two second piston rods 97 by bolts. The scraper 12 is in contact with the static mold 1 , and is used to scrape off the debris attached to the static mold 1 .

[0038] At first, the second piston cylinder 96 is filled with hydraulic oil, and the extrusion frame 92 presses against the first piston rod 93, so that the pressure spring 94 is in a compressed state. First, the operator places the plate 6 on the static mold 1, and then controls the telescopic rod of the hydraulic rod 3 to extend, so that the telescopic rod of the hydraulic rod 3 drives the lifting frame 4 to move downward. The downward movement of the lifting frame 4 will drive the extrusion frame 92, the two connecting columns 73 and the movable mold 5 to move downward together. After the extrusion frame 92 moves downward for a certain distance, it no longer presses against the first piston rod 93, and the pressure spring 94 resets to drive the first piston rod 93 to move downward. The downward movement of the first piston rod 93 causes negative pressure to be generated in the first piston cylinder 91. Then the negative pressure in the first piston cylinder 91 sucks the hydraulic oil in the two second piston cylinders 96 into the first piston cylinder 91 through the through hole of the first piston rod 93 and the connecting pipe 95, so that the two second piston rods 97 drive the scraper 12 to move in the direction close to the second piston cylinder 96. After the two second piston rods 97 drive the scraper 12 to move a certain distance, the scraper 12 is no longer in contact with the static mold 1, and the two connecting columns 73 move downward. When moving, the guide grooves of the two connecting arms 72 will be squeezed respectively, so that the two connecting arms 72 will respectively drive the two positioning plates 71 to move a certain distance in the direction of approaching each other, so that the two positioning plates 71 will respectively press against the plate 6 from both ends, and the two positioning plates 71 will drive the two sets of crankshafts 81 to approach each other. At the same time, the four connecting frames 84 will respectively press against the strip grooves of the four crankshafts 81, so that the four crankshafts 81 will respectively drive the four rotating clamps 82 to rotate ninety degrees in the direction of approaching the plate 6, so that the four rotating clamps 82 will respectively press against the plate 6 from both sides of the plate 6 through the contact pieces 83 made of rubber material, and then the rotating clamps 82 will avoid wear on the plate 6 through the contact pieces 83 made of rubber material. In this way, before bending the plate 6, the positioning plates 71 press against the plate 6 from both ends and correct the deviation of the plate 6 from both sides, and then position the plate 6 from multiple directions, so that the bending of the plate 6 is more accurate, thereby enhancing the bending effect; then the movable mold 5 continues to move downward and squeezes the plate 6 together with the static mold 1, thereby completing the bending of the plate 6;Then, the telescopic rod of the hydraulic rod 3 is controlled to retract and drive the lifting frame 4 to move upward and reset. The reset of the lifting frame 4 will drive the two connecting columns 73, the movable mold 5 and the extrusion frame 92 to reset. The reset of the two connecting columns 73 will respectively drive the two positioning plates 71 to reset through the connecting arms 72. The reset of the two positioning plates 71 will respectively drive the two sets of crankshafts 81 to reset through the connecting frame 84. The reset of the two sets of crankshafts 81 makes the two sets of rotating clamps 82 respectively drive the two sets of contact sheets 83 to reset. When the extrusion frame 92 is reset, it will re-compress the first piston rod 93 to reset, and the pressure spring 94 returns to the initial state. The reset of the first piston rod 93 will squeeze the hydraulic oil in the first piston cylinder 91, so that the first piston cylinder The hydraulic oil in 91 enters the two second piston cylinders 96 through the first piston rod 93 and the connecting pipe 95, so that the two second piston rods 97 drive the scraper 12 to reset. The reset of the two second piston rods 97 will jointly push the bent sheet 6. In this way, after the sheet 6 is bent, the two second piston rods 97 push the sheet 6 out of the static mold 1, and then automatically remove the bent sheet 6, so that the production cycle is shortened, thereby improving efficiency; while the scraper 12 resets, the debris attached to the static mold 1 will be scraped off, thereby preventing the debris from crushing the sheet 6 and affecting the quality of the sheet 6; then the operator can collect the bent sheet 6. ;

[0039] Embodiment 2: Based on embodiment 1, Figure 1-Figure 13 As shown, a lubrication mechanism 10 is also included for lubricating the plate. The lubrication mechanism 10 is arranged on the static mold 1, and the lubrication mechanism 10 includes: an oil storage tank 101 connected to the static mold 1 by bolts, and the oil storage tank 101 is used to store lubricating oil; the oil storage tank 101 is connected to a first shunt pipe 102, and the first shunt pipe 102 is communicated with the inside of the oil storage tank 101; the two ends of the first shunt pipe 102 are respectively connected to a first one-way valve 1031; the two first one-way valves 1031 are both connected to a third piston cylinder 104; there are two Dispersion tube 105; sponges 106 are installed on the two dispersion tubes 105, and the two sponges 106 are in contact with the plate 6, and the sponges 106 are used to apply lubricating oil to the plate 6; the two dispersion tubes 105 are respectively connected to the two third piston cylinders 104 with a second one-way valve 1032; the two third piston cylinders 104 are both slidably connected with a third piston rod 107, and the groove of the positioning plate 71 is used to squeeze the third piston rod 107 to move; the two third piston rods 107 are respectively connected to the two third piston cylinders 104 with a tension spring 108.

[0040] The oil storage tank 101 is provided with a filling port, and the filling port of the oil storage tank 101 is used for filling lubricating oil.

[0041] It also includes a top component 11 for spraying lubricating oil from the top, and the top component 11 is arranged on the connecting arm 72, and the top component 11 includes: two diverter frames 111 respectively connected to the two connecting arms 72 by bolts; a plurality of nozzles 112 are respectively installed on the two diverter frames 111 at even intervals, and the plurality of nozzles 112 are used to spray lubricating oil onto the plate 6; the two diverter frames 111 are connected to a fourth one-way valve 1142; the two fourth one-way valves 1142 are connected to a fourth piston cylinder 115; the two sides of the first diverter pipe 102 are respectively connected to the second diverter pipe 113; the two second diverter pipes 113 are respectively connected to the two fourth piston cylinders 115 with a third one-way valve 1141; the two fourth piston cylinders 115 are both slidably connected with a fourth piston rod 116, and the two fourth piston rods 116 are respectively connected to the two sides of the frame 2 by bolts.

[0042] Initially, there is lubricating oil in the oil storage tank 101, the third piston cylinder 104 and the fourth piston cylinder 115. When the two positioning plates 71 are close to each other, the grooves of the two positioning plates 71 will squeeze the two third piston rods 107 respectively, and the tension spring 108 will be stretched, so that the two third piston rods 107 squeeze the lubricating oil in the two third piston cylinders 104 respectively, so that the lubricating oil in the two third piston cylinders 104 respectively enters the two dispersion pipes 105 through the two second one-way valves 1032, so that the lubricating oil is immersed in the sponge 106, and the sponge 106 immersed in the lubricating oil is The sponge 106 contacts the plate 6 so that the lubricating oil is applied to the bottom surface of the plate 6. When the two connecting arms 72 approach each other, they will drive the two fourth piston cylinders 115 to approach each other, so that the two fourth piston rods 116 squeeze the lubricating oil in the two fourth piston cylinders 115 respectively, so that the lubricating oil in the two fourth piston cylinders 115 respectively passes through the two fourth one-way valves 1142 and enters the two diverter racks 111. Then, the lubricating oil in the two diverter racks 111 is sprayed onto the surface of the plate 6 through the nozzles 112. In this way, when the plate 6 is folded, the lubricating oil in the two fourth piston cylinders 115 is sprayed onto the surface of the plate 6 through the nozzles 112. Before bending, lubricating oil is sprayed on the plate 6 to lubricate the frictional parts of the plate 6, so that the plate 6 is not easily worn during bending, thereby further enhancing the bending effect; after the plate 6 is bent, the positioning plate 71 and the connecting arm 72 are reset, and the positioning plate 71 no longer squeezes the third piston rod 107 after reset, and the tension spring 108 is reset, so that the third piston rod 107 is reset, and the reset of the third piston rod 107 generates negative pressure in the third piston cylinder 104, so that the negative pressure in the third piston cylinder 104 passes through the first one-way valve 1031 and the first The diverter pipe 102 draws lubricating oil from the oil storage tank 101, and at the same time, the connecting arm 72 is reset to drive the fourth piston cylinder 115 to reset, so that negative pressure is generated in the fourth piston cylinder 115 through the fourth piston rod 116, so that the negative pressure in the fourth piston cylinder 115 draws lubricating oil from the oil storage tank 101 through the third one-way valve 1141, the second diverter pipe 113 and the first diverter pipe 102, thereby replenishing the lubricating oil in the third piston cylinder 104 and the fourth piston cylinder 115, and then the operator can add lubricating oil through the filling port of the oil storage tank 101.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bending device for automobile sheet processing, characterized in that it comprises: Static model (1); A frame (2) is fixedly connected to the static mold (1); A hydraulic rod (3) is fixedly connected to the top of the frame (2); A lifting frame (4) is slidably connected to the frame (2), and the lifting frame (4) is fixedly connected to the telescopic rod of the hydraulic rod (3); The movable mold (5) is fixedly connected to the middle part of the lifting frame (4); The plate (6) is placed on the static mold (1); A positioning mechanism (7) is provided on the static mold (1); A deviation correction mechanism (8) is arranged on the positioning mechanism (7); A push-out mechanism (9) is disposed on the frame (2); Two positioning plates (71) are respectively connected to the two sides of the static mold (1) in a sliding manner, and grooves are formed on the sides of the two positioning plates (71) close to each other; The deviation correction mechanism (8) comprises: four crankshafts (81), two of which are rotatably connected to each positioning plate (71), the two crankshafts (81) on the same positioning plate (71) form a group, and the four crankshafts (81) are provided with strip grooves; the four crankshafts (81) are fixedly connected with rotating clamps (82), the two rotating clamps (82) on the same group of crankshafts (81) form a group; the four rotating clamps (82) are fixedly connected with contact pieces (83), the two contact pieces (83) on the same group of rotating clamps (82) form a group; two connecting frames (84) are fixedly connected to the two sides of the static mold (1), the two connecting frames (84) on the same side form a group, and the four connecting frames (84) are respectively slidably connected to the strip grooves of the four crankshafts (81).

2. A bending device for automobile sheet processing according to claim 1, characterized in that: The positioning mechanism (7) comprises: two positioning plates (71) each having a connecting arm (72) fixedly connected thereto, the two connecting arms (72) each having a guide groove; and a lifting frame (4) having two connecting columns (73) fixedly connected thereto, the two connecting columns (73) being respectively slidably connected to the guide grooves of the two connecting arms (72).

3. A bending device for automobile sheet processing according to claim 2, characterized in that: The contact piece (83) is made of rubber.

4. A bending device for automobile sheet processing according to claim 2, characterized in that: The ejection mechanism (9) comprises: a first piston cylinder (91) fixedly connected to the frame (2); an extrusion frame (92) fixedly connected to the lifting frame (4); a first piston rod (93) slidably connected in the first piston cylinder (91), the bottom of the first piston rod (93) contacts the extrusion frame (92), and a through hole is opened in the middle of the first piston rod (93); a pressure spring (94) is connected between the first piston rod (93) and the first piston cylinder (91); a connecting pipe (95) is connected to the bottom of the first piston rod (93), and the connecting pipe (95) is communicated with the through hole of the first piston rod (93); two second piston cylinders (96) are fixedly connected to the static mold (1), and the two second piston cylinders (96) are both communicated with the connecting pipe (95); and the two second piston cylinders (96) are slidably connected with the second piston rods (97).

5. A bending device for automobile sheet processing according to claim 4, characterized in that: The invention also comprises a lubrication mechanism (10) for lubricating the plate member, the lubrication mechanism (10) being arranged on the static mold (1), the lubrication mechanism (10) comprising: an oil storage tank (101) fixedly connected to the static mold (1); the oil storage tank (101) being connected to a first shunt pipe (102), the first shunt pipe (102) being in communication with the interior of the oil storage tank (101); first one-way valves (1031) being respectively connected at both ends of the first shunt pipe (102); a third piston cylinder (104) being connected to each of the two first one-way valves (1031); Two dispersion tubes (105) are fixedly connected in the mold (1); a sponge (106) is installed on each of the two dispersion tubes (105), and each of the two sponges (106) is in contact with the plate (6); a second one-way valve (1032) is connected between each of the two dispersion tubes (105) and two third piston cylinders (104); a third piston rod (107) is slidably connected in each of the two third piston cylinders (104); and a tension spring (108) is connected between each of the two third piston rods (107) and the two third piston cylinders (104).

6. A bending device for automobile sheet processing according to claim 5, characterized in that: The oil storage tank (101) is provided with a filling port.

7. A bending device for automobile sheet processing according to claim 5, characterized in that: The machine also comprises a top assembly (11) for spraying lubricating oil from the top. The top assembly (11) is arranged on the connecting arm (72), and comprises: two flow diverter racks (111) respectively fixed to the two connecting arms (72); a plurality of spray heads (112) are respectively installed on the two flow diverter racks (111) at even intervals; the two flow diverter racks (111) are both connected to a fourth one-way valve (1142); the two fourth one-way valves (1142) are both connected to a fourth piston cylinder (115); the two sides of the first flow diverter pipe (102) are respectively connected to a second flow diverter pipe (113); the two second flow diverter pipes (113) are respectively connected to the two fourth piston cylinders (115) with a third one-way valve (1141); the two fourth piston cylinders (115) are both slidably connected to a fourth piston rod (116), and the two fourth piston rods (116) are respectively fixed to the two sides of the frame (2).

8. A bending device for automobile sheet material processing according to claim 7, characterized in that: It also includes a scraper (12) fixed between the two second piston rods (97), and the scraper (12) is in contact with the static mold (1).

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