Photovoltaic module frame profile production line

Abstract

The present application relates to a kind of photovoltaic module frame section production line, including the unwinder for placing steel strip coil.It is characterized in that: there is successively the forming machine for being bent into photovoltaic module frame section blank by steel strip, the welding machine of the part of photovoltaic module frame section blank that needs to be fixed together is welded together in the stack layer and the cutting machine for the fixed-length cutting of photovoltaic module frame section blank after unwinder.The forming machine, welding machine and cutting machine below respectively have first rack, second rack and third rack, and the first-third rack is same height and is in same straight line.The present application can not only improve production efficiency, reduce production cost, but also improve product quality and aesthetic degree.Adapted to the processing of photovoltaic module frame section.

Description

TECHNICAL FIELD

[0001] The present application relates to a profile production line. Specifically, it is an automatic production line for processing profile for photovoltaic module frame. BACKGROUND

[0002] It is known in the photovoltaic module production industry that photovoltaic modules need to be fixed on a support by means of a frame. The frame is processed from a profile.

[0003] The earliest frame profile is hot-extruded from aluminum material. The profile hot-extruded from aluminum material has the problems of high material consumption, high energy consumption, low production efficiency and high production cost. In order to solve this problem, a frame profile bent from a steel strip has appeared in recent years.

[0004] At present, the method for bending a steel strip into a profile for photovoltaic module frame mainly has the following steps: the first step is to bend the steel strip into a profile blank by using a bending forming machine; the second step is to cut the profile blank into segmented profile blanks of desired length by using a cutting machine; and the third step is to weld the stacked layers of the U-shaped groove bottom matched with the edge of the photovoltaic module by using a welding machine. The welding machine is a direct current welding machine.

[0005] Since the bending, cutting and welding need to be completed by the bending forming machine, the cutting machine and the welding machine respectively, at least three operators are needed to complete the production, which results in many production steps, many operators needed, low production efficiency and high manufacturing cost. In addition, since the welding machine is a direct current welding machine, a row of welding spots will be formed on the surface of the profile after welding, which not only has low product quality, but also is not beautiful.

[0006] In addition, since the welding step is to weld the segmented profile blanks one by one after the cutting step, and the steel strip has strong elasticity, the segmented profile blanks after bending are prone to misalignment between the stacked layers. Therefore, it is difficult to maintain the product quality consistent between the segmented profiles of the same batch and between the segmented profiles of different batches, which makes it difficult to ensure the product quality. SUMMARY

[0007] The present application solves the problem of overcoming the above shortcomings and providing a photovoltaic module frame profile production line. By using this production line, the production efficiency can be improved, the production cost can be reduced, and the product quality and the aesthetic degree can be improved.

[0008] The problem to be solved by the present application is realized by the following technical scheme:

[0009] The photovoltaic module frame profile production line of the present application comprises a pay-off machine for placing a steel strip coil. Its features are that after the pay-off machine, there are in sequence a forming machine for bending the steel strip into a photovoltaic module frame profile blank, a welding machine for welding together the part of the photovoltaic module frame profile blank that needs to be fixed together, and a cutting-off machine for cutting off the photovoltaic module frame profile blank to a fixed length. Below the forming machine, the welding machine and the cutting-off machine, there are respectively a first machine frame, a second machine frame and a third machine frame, which are of the same height and in the same straight line.

[0010] The forming machine comprises at least a first forming unit, a second forming unit, a third forming unit, a fourth forming unit, a fifth forming unit, a sixth forming unit and a seventh forming unit. The first to seventh forming units are all located on the first machine frame and all contain an upper roller shaft and a lower roller shaft, which are parallel and rotatably connected at one same end to the first machine frame, and at their other same end are connected to a motor through a speed reducer. The upper and lower roller shafts have respectively an upper die roller and a lower die roller, wherein the fifth forming unit has a side roller between the right side of the upper die roller and the lower die roller.

[0011] The upper die roller of the first forming unit is composed of a first section, a second section, a third section and a fourth section from left to right; the first section, the second section, the third section and the fourth section are all short cylinders, the diameter of the first section is greater than that of the second section, the diameter of the second section is greater than that of the third section, and the diameter of the third section is smaller than that of the fourth section. The axial length of the second section is smaller than that of the third section, and the axial length of the second section and the third section and the sum of the diameter difference between the second section and the third section are equal to the width of the steel strip.

[0012] The lower die roller of the first forming unit is composed of a first section, a second section, a third section and a fourth section from left to right; the axial length of the first section, the second section, the third section and the fourth section of the lower die roller is respectively equal to and corresponds to the axial length of the first section, the second section, the third section and the fourth section of the upper die roller of the first forming unit, and when the upper and lower die rollers are in contact, the longitudinal points of the roller surfaces are all in contact, so that the steel strip is bent into a first profile blank after passing between the upper and lower die rollers.

[0013] The upper die roll of the second forming unit is composed of a first section, a second section, a third section, a fourth section, a fifth section, a sixth section and a seventh section from left to right. The first section, the fourth section, the fifth section and the seventh section are all short cylinders. The second section, the third section and the sixth section are all tapered. The diameters of the two ends of the second section are both smaller than that of the first section, and the small end of the second section is adjacent to the inner end of the first section. The large end of the third section is adjacent to the large end of the second section, and their diameters are equal. The axial lengths of the fourth section and the fifth section are both greater than that of the first section. The diameter of the fourth section is greater than that of the fifth section, and the diameter of the fourth section is equal to that of the small section of the third section. The axial length of the sixth section is greater than that of the fifth section, and the small end of the sixth section is adjacent to the inner end of the fifth section, and their diameters are equal. The axial length of the seventh section is smaller than that of the fourth section, and the diameter of the seventh section is smaller than that of the large end of the sixth section.

[0014] The lower die roll of the second forming unit is composed of a first section, a second section, a third section, a fourth section, a fifth section, a sixth section and a seventh section from left to right. The axial lengths of the first section to the seventh section are equal to those of the first section to the seventh section of the upper die roll of the present forming unit respectively. The end of the seventh section adjacent to the small end of the sixth section has a circumferential step, so that a gap suitable for the thickness of the steel strip is formed between the outer edges of the seventh section and the sixth section. When the upper and lower die rolls contact, the longitudinal points of the roll surfaces are in contact, so that the first profile blank sent from the first forming unit is bent into a second profile blank.

[0015] The upper die roll of the third forming unit is composed of a first section, a second section, a third section, a fourth section, a fifth section and a sixth section from left to right. The first section, the second section, the third section and the sixth section are all short cylinders, and the axial lengths of the first section and the third section are equal and greater than that of the second section. The diameter of the first section is greater than that of the second section, and the diameter of the second section is greater than that of the third section. The fourth section and the fifth section are both tapered, the small end of the fourth section is adjacent to the third section, and the diameter of the small end of the fourth section is smaller than that of the third section. The diameter of the large end of the fourth section is equal to that of the small end of the fifth section, the diameter of the large end of the fifth section is equal to that of the sixth section, and the diameter of the sixth section is greater than those of the first section, the second section and the third section respectively.

[0016] The lower die roll of the third forming unit is composed of a first section, a second section, a third section, a fourth section, a fifth section, a sixth section and a seventh section from left to right. The axial lengths of the first section to the fifth section are equal to those of the first section to the fourth section of the upper die roll of the present forming unit respectively, the sum of the axial lengths of the fifth section and the sixth section is equal to the length of the fifth section of the upper die roll of the third forming unit, and the axial length of the fifth section is greater than that of the sixth section. The axial length of the seventh section is equal to that of the sixth section of the upper die roll of the third forming unit. When the upper and lower die rolls contact, the longitudinal points of the roll surfaces are in contact, so that the second profile blank sent from the second forming unit is bent into a third profile blank.

[0017] The upper die roller of the fourth forming unit is composed of the first section, the second section, the third section, the fourth section, the fifth section and the sixth section from left to right. The first section, the second section, the third section, the fourth section and the sixth section are all short cylinders. The diameter of the first section is smaller than that of the second section, the diameter of the second section is larger than that of the third section, the diameter of the third section is smaller than that of the first section and larger than that of the fourth section. The axial length of the fourth section is equal to twice the thickness of the steel strip. The fifth section is a cone, the small end of which has the same diameter as the fourth section, and the large end of which has the same diameter as the sixth section. The diameter of the sixth section is equal to that of the second section.

[0018] The lower die roller of the fourth forming unit is composed of the first section, the second section, the third section and the fourth section from left to right. The axial length of the first section and the fourth section is equal to that of the first section and the sixth section of the upper die roller of the present forming unit respectively. The second section corresponds to the second section of the upper die roller of the fourth forming unit. The third section is a cone, the small end of which has a smaller diameter than the second section, the large end of which has the same diameter as the fourth section, and the axial length of which is equal to the sum of the axial lengths of the third section, the fourth section and the fifth section of the upper die roller of the fourth forming unit. When the upper and lower die rollers contact, the first section, the second section and the fourth section of the lower die roller contact the longitudinal points of the roller surface of the first section, the second section and the sixth section of the upper die roller respectively, so as to bend the third profile blank delivered by the third forming unit into the fourth profile blank.

[0019] The upper die roller of the fifth forming unit is composed of the first section, the second section, the third section, the fourth section and the fifth section from left to right. The first section, the third section, the fourth section and the fifth section are all short cylinders. The diameter of the first section is larger than that of the second section, the diameter of the third section is larger than that of the fourth section, and the diameter of the fourth section is larger than that of the fifth section. The second section is a cone, the axial length of which is twice the thickness of the steel strip, the large end of which is adjacent to the first section, the large end of which has a smaller diameter than the first section, and the small end of which has a smaller diameter than the third section. Thus, a gap is formed between the edge of the third section and the first section.

[0020] The lower die roller of the fifth forming unit is composed of the first section and the second section. The axial length of the first section is equal to that of the first section of the upper die roller of the present forming unit, and the axial length of the second section is equal to the sum of the axial lengths of the third section and the fourth section of the upper die roller of the present forming unit. The axial direction of the side roller is vertical and perpendicular to the axial directions of the upper and lower die rollers. In operation, the profile blank is bent into the fifth profile blank by the roller surface of the side roller, the roller surface of the fourth section of the upper die roller and the roller surface of the second section of the lower die roller.

[0021] The upper die roller of the sixth forming unit is composed of a first section, a second section, a third section, a fourth section, a fifth section and a sixth section from left to right. The first section, the second section, the fourth section, the fifth section and the sixth section are all short cylinders, and the third section is a taper. The diameter of the first section is smaller than that of the second section, the diameter of the second section is equal to that of the small end of the third section, the diameter of the large end of the third section is equal to that of the fourth section, the diameter of the fourth section is larger than that of the fifth section, and the diameter of the fifth section is larger than that of the sixth section. The axial length of the fifth section is larger than that of the sixth section.

[0022] The lower die roller of the sixth forming unit is composed of a first section, a second section, a third section, a fourth section and a fifth section from left to right. The third section is a taper, and the taper is equal to that of the third section of the upper die roller of the forming unit and is opposite in the axial direction. The diameter of the first section is larger than that of the second section, the diameter of the second section is equal to that of the large end of the third section, the diameter of the small end of the third section is equal to that of the fourth section, and the diameter of the fourth section is smaller than that of the fifth section. The diameter of the fourth section is equal to the sum of the axial lengths of the fourth section and the fifth section of the upper die roller of the forming unit. In operation, the fifth profile blank is bent into a sixth forming blank by the upper die roller and the lower die roller of the forming unit.

[0023] The upper die roller of the seventh forming unit is composed of a first section, a second section, a third section, a fourth section and a fifth section from left to right, and the first section, the second section, the third section, the fourth section and the fifth section are all short cylinders. The diameter of the first section is smaller than that of the second section, the diameter of the second section is larger than that of the third section, the diameter of the third section is larger than that of the fourth section, and the diameter of the fourth section is larger than that of the fifth section. The end adjacent to the second section of the third section has a circumferential step, so that a circumferential gap is formed between the edge of the third section and the second section, and the circumferential gap is not less than twice the thickness of the steel strip.

[0024] The lower die roller of the seventh forming unit is composed of a first section, a second section, a third section and a fourth section from left to right. The diameter of the first section is larger than that of the second section, the diameter of the second section is smaller than that of the third section, and the diameter of the third section is smaller than that of the fourth section. The axial lengths of the first section, the second section and the fourth section are equal to those of the first section, the second section and the fifth section of the upper die roller of the forming unit, respectively, and the axial length of the third section is equal to the sum of the third section, the fourth section and the gap of the upper die roller of the forming unit. In operation, the sixth profile blank is bent into a seventh forming blank by the upper die roller and the lower die roller of the forming unit.

[0025] A further improvement of the present application is that the welding machine is a laser welding machine, which comprises a bracket, a laser gun and a laser emitter. The bracket is in the shape of 7, and the vertical part thereof is fixed vertically on the second rack. The laser gun is in the shape of a rod, and is connected vertically to the horizontal part of the bracket, with the laser emitting head thereof downward and facing the horizontal part of the U-shaped groove of the seventh forming blank. The laser emitter is connected to the tail of the laser gun by an optical fiber.

[0026] The further improvement of the present application is that the second rack before the welding machine is provided with a front limiting mechanism for limiting the seventh forming blank. The front limiting mechanism comprises at least two limiting units. The limiting unit comprises upper and lower shafts which are parallel and connected to the second rack by means of pin seats and bearings. The upper and lower shafts are respectively provided with upper and lower shaping wheels. The outer circle of the lower shaping wheel is provided with a circumferential groove, and the depth and width of the circumferential groove are respectively matched with the width and length of the cross section of the seventh forming blank. The axial length of the upper shaping wheel is equal to that of the lower shaping wheel, and the end of the upper shaping wheel is provided with a circumferential protrusion. The width and height of the circumferential protrusion are respectively matched with the width and depth of the U-shaped groove on the cross section of the seventh forming blank. In operation, the seventh forming blank is movably arranged in the circumferential groove on the lower shaping wheel, and the opening of the U-shaped groove on the cross section of the seventh forming blank faces outward. The circumferential protrusion at one end of the upper shaping wheel is movably arranged in the U-shaped groove on the cross section of the seventh forming blank, and the roller surface of the upper shaping wheel except the circumferential protrusion is movably pressed on one side of the seventh forming blank except the U-shaped groove, so as to tightly limit the horizontal part of the U-shaped groove on the cross section of the seventh forming blank between the upper and lower shaping wheels.

[0027] The further improvement of the present application is that the second rack after the welding machine is provided with a rear limiting mechanism for limiting the profile. The rear limiting mechanism comprises at least two rear limiting units. The rear limiting unit comprises upper and lower shafts which are parallel and connected to the second rack by means of pin seats and bearings. The upper and lower shafts are respectively provided with upper and lower shaping wheels. The outer circle of the lower shaping wheel is provided with a circumferential groove, and the depth and width of the circumferential groove are respectively matched with the width and length of the cross section of the seventh forming blank. The axial length of the upper shaping wheel is equal to that of the lower shaping wheel, and the end of the upper shaping wheel is provided with a circumferential protrusion. The width and height of the circumferential protrusion are respectively matched with the width and depth of the U-shaped groove on the cross section of the seventh forming blank. In operation, the seventh forming blank is movably arranged in the circumferential groove on the lower shaping wheel, and the opening of the U-shaped groove on the cross section of the seventh forming blank faces outward. The circumferential protrusion at one end of the upper shaping wheel is movably arranged in the U-shaped groove on the cross section of the seventh forming blank, and the roller surface of the upper shaping wheel except the circumferential protrusion is movably pressed on one side of the seventh forming blank except the U-shaped groove, so as to tightly limit the horizontal part of the U-shaped groove on the cross section of the seventh forming blank between the upper and lower shaping wheels.

[0028] The further improved scheme of the present application is that the cutting machine comprises a fixing frame. The fixing frame is plate-shaped and comprises a vertical part, the lower part of which is provided with a 90-degree forward bending part and a 90-degree upward bending part in sequence. The plate surface of the vertical part of the fixing frame is perpendicular to the longitudinal direction of the third frame. The 90-degree forward bending part of the fixing frame is connected with the third frame, and the inner side plate wall of the vertical part of the fixing frame is provided with a horizontal guide rail at the upper part and the middle part. The front side of the fixing frame is provided with a moving frame, and the side of the moving frame adjacent to the fixing frame is provided with a sliding block. The sliding block is U-shaped and horizontally arranged, and corresponds to the guide rail. The horizontal part of the sliding block is connected with the vertical part of the moving frame and is slidably buckled on the corresponding guide rail.

[0029] The upper part of the front side of the moving frame is provided with a moving motor, the output shaft of which is perpendicular to the plate surface of the moving frame, and the outer end of the output shaft is provided with a gear wheel. The vertical part of the fixing frame adjacent to the moving frame is provided with a horizontal rack, which is located below the upper part of the guide rail, and the gear wheel is engaged with the rack. The output shaft is downwardly connected with a cutting motor, and the output shaft of the cutting motor is horizontally arranged and provided at the outer end with a circular saw blade.

[0030] The lower part of the front side of the moving frame is provided with a clamping part. The clamping part comprises a bottom plate and a pressing block connected with the bottom plate. The lower surface of the pressing block is provided with a longitudinal through slot, and the upper part is provided with a transverse flat slot matched with the circular saw blade. The lower part of the longitudinal through slot is rectangular in cross section, and the bottom of the slot is provided with a first longitudinal flat slot and a first longitudinal downward protrusion, which are inverted U-shaped in cross section, and correspond to a second longitudinal protrusion and a second longitudinal flat slot on the upper side of the seventh shaped blank, respectively.

[0031] The bottom plate corresponding to the longitudinal through slot is provided with an air cylinder, and the piston rod of the air cylinder is upwardly connected with an upper pressing block. By extending the piston rod of the air cylinder, the seventh shaped blank can be clamped between the upper pressing block and the bottom of the longitudinal through slot of the pressing block.

[0032] The moving motor, the lifting motor and the cutting motor are all servo motors, and they are all connected with a controller through wires.

[0033] As can be seen from the above scheme, since there are successively a forming machine for bending the steel strip into a profile blank for a photovoltaic module frame, a welding machine for welding together the part of the stacked layers of the profile blank for the photovoltaic module frame that needs to be fixed together, and a cutting machine for cutting the profile blank for the photovoltaic module frame to a fixed length after the unwinding machine, the controller can be used to synchronize the operation of the forming machine, the welding machine and the cutting machine to form a complete assembly line. Only one operator is needed. Compared with the method of using three sets of equipment for forming, cutting and welding respectively in the background art, which requires three operators, the production steps and the number of operators are reduced, thereby improving the production efficiency and reducing the manufacturing cost. Since the welding machine is a laser welding machine, the situation of the welding points protruding above the surface of the profile after welding in the longitudinal direction of the profile is avoided, thereby improving the product quality and the aesthetic appearance of the product surface.

[0034] Since the welding machine and the forming machine are located on the same assembly line, and the welding machine is located before the cutting machine in the assembly line, the stacked layers that need to be fixed together on the profile blank are welded together before the profile blank sent by the forming machine is cut. Compared with the method of cutting first and then welding in the background art, the misalignment phenomenon between the stacked layers of the profile blank is avoided, the product quality consistency between the profile segments of the same batch and between the profile segments of different batches is improved, and the product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of a photovoltaic module frame production line of the present application;

[0036] Figure 2 is Figure 1 a left side view schematic diagram of a first forming unit of the forming machine in the present application;

[0037] Figure 3 is Figure 1 a left side view schematic diagram of a second forming unit of the forming machine in the present application;

[0038] Figure 4 is Figure 1 a left side view schematic diagram of a third forming unit of the forming machine in the present application;

[0039] Figure 5 is Figure 1 a left side view schematic diagram of a fourth forming unit of the forming machine in the present application;

[0040] Figure 6 is Figure 1 a left side view schematic diagram of a fifth forming unit of the forming machine in the present application;

[0041] Figure 7 is Figure 1 a left side view schematic diagram of a sixth forming unit of the forming machine in the present application;

[0042] Figure 8 yes Figure 1 A schematic left view of the seventh molding unit of the middle molding machine;

[0043] Figure 9 yes Figure 1 AA cross-sectional view of ;

[0044] Figure 10 yes Figure 9 An enlarged view of the profile blank 407;

[0045] Figure 11 yes Figure 1 BB cross-sectional diagram.

[0046] Figure 12 yes Figure 1 An enlarged schematic diagram of the cutting machine in FIG.

[0047] Figure 13 yes Figure 12 Schematic diagram of CC cross-section;

[0048] Figure 14 of Figure 12 DD cross-sectional diagram. DETAILED DESCRIPTION

[0049] like Figure 1 As shown, the photovoltaic module frame profile production line of the present invention contains an unwinder 1 for placing a steel strip coil. Following the unwinder 1, there are sequentially provided a forming machine for bending the steel strip into a profile blank for the photovoltaic module frame, a welding machine 5 for welding together the stacked layers of the photovoltaic module frame profile blank that need to be fixed together, and a cutting machine for cutting the photovoltaic module frame profile blank into a fixed length. A first frame 4, a second frame 5, and a third frame 6 are respectively provided under the forming machine, the welding machine, and the cutting machine. The first frame 4, the second frame 4, and the third frame 6 have the same height and are in the same straight line. The unwinder includes a variable frequency speed regulating motor, which drives the steel strip coil after being decelerated by a gear box, providing rotational power for the steel strip. One of the functions of the unwinder 1 is to unwind while maintaining the post-tension of the steel strip, and the other function is to realize automatic centering of the steel strip;

[0050] A butt welding machine 2 and a material storage box 3 are also provided between the unwinding machine 1 and the forming machine.

[0051] In order to facilitate continuous production, minimize downtime and improve production efficiency, a welding machine 2 is set between the unwinder 1 and the storage box 3. The welding machine is an automatic butt welding machine. So that after one roll of steel strip is unwound, the second roll of steel strip can be welded to the first roll immediately.

[0052] The discharge box 3 is used to meet the molding needs of the molding machine.

[0053] As Figures 2-8 shown, the forming machine comprises a first forming unit 40, a second forming unit 50, a third forming unit 60, a fourth forming unit 70, a fifth forming unit 80, a sixth forming unit 90 and a seventh forming unit 100. According to the need, more forming units can be added. For the sake of simplicity, only the first to seventh forming units are explained in detail in this embodiment.

[0054] The first to seventh forming units are all located on the first rack 4, and each of them comprises an upper roller shaft and a lower roller shaft, which are parallel and rotatably connected to the first rack by a shaft seat and a bearing at one same end, and connected to a motor through a reduction box at the other same end. For the sake of simplicity, the reduction box and the motor are omitted in the figure.

[0055] An upper die roller and a lower die roller are respectively installed on the upper roller shaft and the lower roller shaft. Among them, a side roller is further arranged between the upper die roller and the lower die roller of the fifth forming unit on the right side.

[0056] As Figure 2 shown, the upper die roller of the first forming unit 40 is integrally composed of a first section 41, a second section 42, a third section 43 and a fourth section 44 from left to right. The first section 41, the second section 42, the third section 43 and the fourth section 44 are all short cylinders, the diameter of the first section 41 is greater than that of the second section 42, the diameter of the second section 42 is greater than that of the third section 43, and the diameter of the third section 43 is smaller than that of the fourth section 44. The axial length of the second section 42 is smaller than that of the third section 43, and the sum of the axial lengths of the second section 42 and the third section 43 and the diameter difference between the second section 42 and the third section 43 is equal to the width of the steel strip.

[0057] The lower die roller of the first forming unit 40 is integrally composed of a first section 411, a second section 421, a third section 431 and a fourth section 441 from left to right. The axial lengths of the first section 411, the second section 421, the third section 431 and the fourth section 441 are respectively equal to and correspond to the first section 41, the second section 42, the third section 43 and the fourth section 44 of the upper die roller of the first forming unit, and when the upper and lower die rollers are in contact, the longitudinal points of the roller surfaces are all in contact, so that the steel strip is bent into a first profile blank 401 after passing between the upper and lower die rollers.

[0058] As Figure 3, the upper die roll of the second forming unit 50 is composed of the first section 51, the second section 52, the third section 53, the fourth section 54, the fifth section 55, the sixth section 56 and the seventh section 57 from left to right. The first section 51, the fourth section 54, the fifth section 55 and the seventh section 57 are all short cylinders. The second section 52, the third section 53 and the sixth section are all tapered. The diameters of the two ends of the second section 52 are both smaller than that of the first section 51, and the small end of the second section 52 is adjacent to the inner end of the first section 51. The large end of the third section 53 is adjacent to the large end of the second section 52, and their diameters are equal. The lengths of the fourth section 54 and the fifth section 55 are both greater than that of the first section 51. The diameter of the fourth section 54 is greater than that of the fifth section 55, and the diameter of the fourth section 54 is equal to that of the small section of the third section 53. The axial length of the sixth section 46 is greater than that of the fifth section 55, and the small end of the sixth section 46 is adjacent to the inner end of the fifth section 55, and their diameters are equal. The axial length of the seventh section 57 is smaller than that of the fourth section 54, and the diameter of the seventh section 57 is smaller than that of the large end of the sixth section 56.

[0059] The lower die roll of the second forming unit 50 is composed of the first section 511, the second section 521, the third section 531, the fourth section 541, the fifth section 551, the sixth section 561 and the seventh section 571 from left to right. The axial lengths of the first section 511 to the seventh section 571 are equal to those of the first section 51 to the seventh section 57 of the upper die roll of the second forming unit, respectively. The end of the seventh section 571 adjacent to the small end of the sixth section 561 has a circumferential step, so that a gap suitable for the thickness of the steel strip is formed between the outer edges of the seventh section 571 and the sixth section 561. When the upper and lower die rolls contact, the longitudinal points of the roll surfaces contact together, so that the first profile blank 401 is bent into the second profile blank 402.

[0060] See Figure 4 The upper die roll of the third forming unit 60 is composed of the first section 61, the second section 62, the third section 63, the fourth section 64, the fifth section 65 and the sixth section 66 from left to right. The first section 61, the second section 62, the third section 63 and the sixth section 66 are all short cylinders, and the axial lengths of the first section 61 and the third section 63 are equal and greater than that of the second section 62. The diameter of the first section 61 is greater than that of the second section 62, and the diameter of the second section 62 is greater than that of the third section 63. The fourth section 64 and the fifth section 65 are both tapered, the small end of the fourth section 64 is adjacent to the third section 63, and the diameter of the small end of the fourth section 64 is smaller than that of the third section 63. The diameter of the large end of the fourth section 64 is equal to that of the small end of the fifth section 65, the diameter of the large end of the fifth section 65 is equal to that of the sixth section 66, and the diameter of the sixth section 66 is greater than that of the first section 61.

[0061] The lower mold roller of the third forming unit 60 is composed of the first section 611, the second section 621, the third section 631, the fourth section 641, the fifth section 651 and the sixth section 661 from left to right. The lengths of the first section 611 to the fifth section 651 and the seventh section 671 are equal to the axial lengths of the first section 61 to the sixth section 66 of the upper mold roller on the third forming unit respectively. When the upper and lower mold rollers contact, the longitudinal points of the roller surfaces contact together, so as to bend the second profile blank 402 sent from the second forming unit into the third profile blank 403.

[0062] See Figure 5 The upper mold roller of the fourth forming unit 70 is composed of the first section 71, the second section 72, the third section 73, the fourth section 74, the fifth section 75 and the sixth section 76 from left to right. The first section 71, the second section 72, the third section 73, the fourth section 74 and the sixth section 76 are all short cylinders. The diameter of the first section 71 is smaller than that of the second section 72. The diameter of the third section 73 is smaller than that of the first section 71, and the diameter of the third section 73 is larger than that of the fourth section 74. The axial length of the fourth section 74 is greater than twice the thickness of the steel strip. The fifth section 75 is a taper, the small end of which is adjacent to the fourth section 74 and the diameter of which is equal to that of the fourth section 74. The diameter of the sixth section 76 is equal to that of the second section 72.

[0063] The lower mold roller of the fourth forming unit 70 is composed of the first section 711, the second section 721, the third section 731 and the fourth section 741 from left to right. The axial lengths of the first section 711 and the fourth section 741 are equal to those of the first section 71 and the sixth section 76 of the upper mold roller on the fourth forming unit respectively. The second section 72 corresponds to the second section 72 of the upper mold roller on the fourth forming unit. When the upper and lower mold rollers contact, the longitudinal points of the roller surfaces of the first section 711, the second section 721 and the fourth section 741 of the lower mold roller and the first section 71, the second section 72 and the sixth section 76 of the upper mold roller contact together, so as to bend the third profile blank 403 into the fourth profile blank 404.

[0064] See Figure 6 The upper mold roller of the fifth forming unit 80 is composed of the first section 81, the second section 82, the third section 83, the fourth section 84 and the fifth section 85 from left to right. The first section 81, the third section 83, the fourth section 84 and the fifth section 85 are all short cylinders. The diameter of the first section 81 is larger than that of the second section 82. The diameter of the third section 83 is larger than that of the fourth section 84, and the diameter of the fourth section 84 is larger than that of the fifth section 85. The second section 82 is a taper, the axial length of which is greater than twice the thickness of the steel strip. The large end of the second section 82 is adjacent to the first section 81, and the diameter of the large end is smaller than that of the first section 81. The diameter of the small end of the second section 82 is smaller than that of the third section 83, so as to form a gap between the third section 83 and the first section 81.

[0065] The lower die roller of the fifth forming unit 80 is composed of a first section 811 and a second section 821, the axial length of the first section 811 is equal to the axial length of the first section 811 of the upper die roller of the present forming unit, and the axial length of the second section 821 is equal to the sum of the axial lengths of the third section 83 and the fourth section 84 of the upper die roller of the present forming unit. The axial direction of the side roller is vertically arranged and perpendicular to the axial directions of the upper and lower die rollers. In operation, the fourth profile blank 404 is bent into the fifth profile blank 405 by the roller surface of the side roller, the roller surface of the fourth section 84 of the upper die roller and the roller surface of the second section 821 of the lower die roller.

[0066] See Figure 7 The upper die roller of the sixth forming unit 90 is composed of a first section 91, a second section 92, a third section 93, a fourth section 94, a fifth section 95 and a sixth section 96 from left to right. The first section 91, the second section 92, the fourth section 94, the fifth section 95 and the sixth section 96 are all short cylinders, the third section 93 is a taper, the diameter of the first section 91 is smaller than that of the second section 92, the diameter of the second section 92 is equal to the small end of the third section 93, the diameter of the large end of the third section 93 is equal to that of the fourth section 94, the diameter of the fourth section 94 is greater than that of the fifth section 95, and the diameter of the fifth section 95 is greater than that of the sixth section 96. Among them, the axial length of the fifth section 95 is greater than that of the sixth section 96.

[0067] The lower die roller of the sixth forming unit 90 is composed of a first section 911, a second section 921, a third section 931, a fourth section 941 and a fifth section 951 from left to right. The third section 931 is a taper, the taper is equal to the taper of the third section 93 of the upper die roller of the present forming unit and the axial direction is opposite; the diameter of the first section 911 is greater than that of the second section 921, the diameter of the second section 921 is equal to that of the large end of the third section 431, the diameter of the small end of the third section 931 is equal to that of the fourth section 941, and the diameter of the fourth section 941 is smaller than that of the fifth section 951. Among them, the diameter of the fourth section 941 is equal to the sum of the axial lengths of the fourth section 94 and the fifth section 95 of the upper die roller of the present forming unit. In operation, the fifth profile blank 405 is bent into the sixth profile blank 406 by the upper die roller and the lower die roller of the present forming unit.

[0068] See Figure 8 The upper die roller of the seventh forming unit 100 is composed of a first section 101, a second section 102, a third section 103, a fourth section 104 and a fifth section 105 from left to right, and all the first to fifth sections are short cylinders. Among them, the diameter of the first section 101 is smaller than that of the second section 102, the diameter of the second section 102 is greater than that of the third section 103, the diameter of the third section 103 is greater than that of the fourth section 104, and the diameter of the fourth section 104 is greater than that of the fifth section 105. The end adjacent to the third section 103 of the second section 102 has a circumferential step, so that a circumferential gap is formed between the edge of the third section 103 and the second section, and the circumferential gap is not less than twice the thickness of the steel strip.

[0069] The lower mold roller of the seventh forming unit 100 is composed of the first section 1011, the second section 1021, the third section 1031 and the fourth section 1041 from left to right. The diameter of the first section 1011 is greater than that of the second section 1021, the diameter of the second section 1021 is less than that of the third section 1031, and the diameter of the third section 1031 is less than that of the fourth section 1041. The axial length of the first section 1011, the second section 1021 and the fourth section 1041 are equal to the axial length of the first section 101, the second section 102 and the fifth section 105 of the upper mold roller of the present forming unit respectively, and the axial length of the third section 1031 is equal to the sum of the axial length of the third section 103, the fourth section 104 and the gap of the upper mold roller of the present forming unit. In operation, the sixth profile blank 406 is bent into the seventh forming blank 407 by the upper mold roller and the lower mold roller of the present forming unit.

[0070] As shown in Figure 1 and Figure 11 , the welding machine is a laser welding machine, which contains a bracket 9, a laser gun 8 and a laser emitter 11. The bracket 9 is in the shape of 7, and its vertical part is fixed vertically on the second rack 5. The laser gun 8 is in the shape of a rod, which is connected vertically on the horizontal part of the bracket 9, and its laser emission head faces downward and directly to the stacking place of the seventh forming blank 407, which is used to accommodate the U-shaped groove bottom on the seventh forming blank 407 of the photovoltaic module edge. The laser emitter 11 is connected to the tail of the laser gun 8 by means of an optical fiber 10.

[0071] As shown in Figure 1 , Figure 9 , Figure 10 and Figure 11As shown, the second machine frame 5 in front of and behind the welding machine is respectively provided with a front limiting mechanism and a rear limiting mechanism for limiting the profile. The front and rear limiting mechanisms are the same, and each contains three limiting units. The limiting units each contain an upper wheel shaft and a lower wheel shaft, which are parallel, and their two ends are connected to the second machine frame 5 by means of a pin seat 501 and a bearing. The upper and lower wheel shafts each have an upper shaping wheel 502 and a lower shaping wheel 503. The outer circle of the lower shaping wheel 503 has a circumferential groove 5031, and the depth and width of the circumferential groove 5031 are respectively matched with the width and length of the cross section of the seventh forming blank 407. The axial length of the upper shaping wheel 502 is equal to that of the lower shaping wheel 503, and one end of the upper shaping wheel 502 has a circumferential protrusion 5021. The width and height of the circumferential protrusion 5021 are respectively matched with the width and depth of the U-shaped groove 4071 on the cross section of the seventh forming blank 407. In operation, the seventh forming blank 407 is placed in the circumferential groove on the lower shaping wheel 503 in a moving manner, and the opening of the U-shaped groove 4071 on the cross section of the seventh forming blank 407 is outward. The circumferential protrusion 5021 at one end of the upper shaping wheel 502 is placed in the U-shaped groove 4071 on the cross section of the seventh forming blank 407 in a movable manner, and the roller surface of the upper shaping wheel 502 except the circumferential protrusion 5021 is pressed on one side of the seventh forming blank 407 except the U-shaped groove 4071 in a movable manner, thereby tightly limiting the horizontal part of the U-shaped groove 4071 on the cross section of the seventh forming blank 407 between the upper shaping wheel 502 and the lower shaping wheel 503.

[0072] As shown, Figures 12-14 The cutting-off machine contains a fixed frame 26. The fixed frame 26 is plate-shaped and contains a vertical part, and the lower part of the vertical part is sequentially processed with a 90-degree forward bending part 261 and a 90-degree upward bending part 262. The plate surface of the vertical part of the fixed frame 26 is perpendicular to the longitudinal direction of the third machine frame 6. The 90-degree forward bending part 261 of the fixed frame 26 is connected to the third machine frame 6, and the inner side plate wall of the vertical part of the fixed frame 26 has a horizontally arranged guide rail 23 fixed on the upper and middle parts. The front side of the fixed frame 26 is provided with a moving frame 25, and one side of the moving frame 25 adjacent to the fixed frame 26 is fixed with a sliding block 24. The sliding block 24 is U-shaped and horizontally arranged, and corresponds to the guide rail 23, and the horizontal part of the sliding block 24 is connected to the vertical part of the moving frame 25 and is slidably buckled on the corresponding guide rail 23.

[0073] The moving motor 171 is fixed on the upper part of the front side of the moving frame 25, and the output shaft of the moving motor 171 is perpendicular to the plate surface of the moving frame 25, and the outer end of the output shaft of the moving motor 171 is connected with a gear 22 through the moving frame 25. The vertical part of the fixed frame 26 adjacent to the moving frame 25 has a horizontally arranged rack 16 fixed on one side, and the rack 16 is located below the upper guide rail 23. The gear 22 is engaged with the rack 16.

[0074] The front upper part of the moving frame 25 is fixed with a lifting motor 172, the output shaft of which is downward and connected with a cutting motor 17. The output shaft of the cutting motor 17 is horizontally arranged, and the outer end thereof is connected with a circular saw blade 18.

[0075] The front lower part of the moving frame 25 is connected with a clamping part. The clamping part is composed of a bottom plate 201 and a pressing block 20 connected with the bottom plate 201. The lower part of the pressing block 20 is processed with a longitudinal groove, and the upper part thereof is processed with a transverse flat groove 204 matched with the circular saw blade 18. The lower part of the cross section of the longitudinal groove is rectangular, and the groove bottom is processed with a first longitudinal flat groove 202 and a first longitudinal downward protrusion 203 with inverted U-shaped cross section, which respectively correspond to the second longitudinal protrusion and the second longitudinal flat groove on the upper side of the seventh profiled blank 407.

[0076] The bottom plate 201 corresponding to the longitudinal groove is connected with a pneumatic cylinder 27, the piston rod of which is upward and connected with an upper jacking block 21. By the extension of the piston rod of the pneumatic cylinder 27, the seventh profiled blank 407 can be clamped between the upper jacking block 21 and the groove bottom of the longitudinal groove of the pressing block 20.

[0077] In operation, the driving mechanisms of the unwinding machine, the forming machine, the welding machine and the cutting machine are controlled by the controller to make the unwinding machine, the forming machine, the welding machine and the cutting machine run synchronously, so that the steel strip unwound by the unwinding machine is once processed into the profile with the required cross section for the photovoltaic module frame.

Claims

1. A photovoltaic module frame profile production line, including an unwinder for placing a steel strip coil; characterized by: Following the unwinder are a forming machine for bending the steel strip into a blank profile for a photovoltaic module frame, a welding machine for welding together the stacked layers of the blank profile for the photovoltaic module frame that need to be fixed together, and a cutting machine for cutting the blank profile for the photovoltaic module frame into fixed lengths; a first frame, a second frame, and a third frame are respectively arranged below the forming machine, the welding machine, and the cutting machine, and the first to third frames are of the same height and are located in the same straight line; The molding machine includes at least a first molding unit, a second molding unit, a third molding unit, a fourth molding unit, a fifth molding unit, a sixth molding unit, and a seventh molding unit; the first to seventh molding units are all located on a first frame, and each of them includes an upper roller and a lower roller, the upper roller and the lower roller are parallel and one end of the upper roller is rotatably connected to the first frame, and the other end of each of them is connected to a motor via a reduction gearbox; the upper and lower rollers are respectively provided with an upper mold roller and a lower mold roller, wherein: a side roller is provided on the right side between the upper mold roller and the lower mold roller of the fifth molding unit; The upper die roller of the first forming unit is composed of a first section, a second section, a third section, and a fourth section from left to right; the first section, the second section, the third section, and the fourth section are all short cylinders, the diameter of the first section is larger than the diameter of the second section, the diameter of the second section is larger than the diameter of the third section, and the diameter of the third section is smaller than the diameter of the fourth section; the axial length of the second section is smaller than the third section, and the sum of the axial lengths of the second and third sections and the diameter difference between the second and third sections is equal to the width of the steel strip; The lower die roller of the first forming unit is composed of a first section, a second section, a third section, and a fourth section from left to right. The axial lengths of the first section, the second section, the third section, and the fourth section are respectively equal to and correspond to the first section, the second section, the third section, and the fourth section of the upper die roller of the first forming unit. When the upper and lower die rollers are in contact, all longitudinal points of the roller surfaces are in contact, so that the steel strip is bent into a first profile blank after passing between the upper and lower die rollers. The upper mold roller of the second molding unit is composed of the first section, the second section, the third section, the fourth section, the fifth section, the sixth section and the seventh section from left to right; the first section, the fourth section, the fifth section and the seventh section are all short cylinders; the second section, the third section and the sixth section are all tapered; the diameters of both ends of the second section are smaller than those of the first section, and its small end is adjacent to the inner end of the first section; the large end of the third section is adjacent to the large end of the second section and their diameters are equal; the axial lengths of the fourth section and the fifth section are both greater than those of the first section; the diameter of the fourth section is greater than that of the fifth section, and the diameter of the fourth section is equal to that of the small section of the third section; the axial length of the sixth section is greater than that of the fifth section, and its small end is adjacent to the inner end of the fifth section and the diameters of the two are equal; the axial length of the seventh section is smaller than that of the fourth section, and its diameter is smaller than that of the large end of the sixth section; The lower die roller of the second forming unit consists of, from left to right, the first, second, third, fourth, fifth, sixth, and seventh sections. The axial lengths of the first to seventh sections are respectively equal to the axial lengths of the first to seventh sections of the upper die roller on this forming unit. The end of the seventh section adjacent to the small end of the sixth section has a circumferential step, so that a gap adapted to the thickness of the steel strip is formed between the outer edges of the seventh and sixth sections. When the upper and lower die rollers come into contact, all longitudinal points of the roller surfaces touch together, thereby bending the first profile blank delivered from the first forming unit into the second profile blank. The upper mold roller of the third molding unit is composed of a first section, a second section, a third section, a fourth section, a fifth section, and a sixth section from left to right; the first section, the second section, the third section, and the sixth section are all short cylinders, the axial lengths of the first section and the third section are equal and larger than the second section; the diameter of the first section is larger than the second section, and the diameter of the second section is larger than the third section; the fourth section and the fifth section are both tapered, the small end of the fourth section is adjacent to the third section, and the diameter of the small end of the fourth section is smaller than that of the third section; the large end diameter of the fourth section is equal to the small end of the fifth section, the large end diameter of the fifth section is equal to the sixth section, and the diameter of the sixth section is larger than that of the first section, the second section, and the third section respectively; The lower die roller of the third forming unit is composed of the first, second, third, fourth, fifth, sixth and seventh sections from left to right. The axial lengths of the first to fifth sections are respectively equal to the axial lengths of the first to fourth sections of the upper die roller on this forming unit. The sum of the axial lengths of the fifth and sixth sections is equal to the length of the fifth section of the upper die roller on the third forming unit, and the axial length of the fifth section is greater than the sixth section. The axial length of the seventh section is equal to the sixth section of the upper die roller on the third forming unit. When the upper and lower die rollers are in contact, all longitudinal points of the roller surfaces are in contact, thereby bending the second profile blank sent from the second forming unit into the third profile blank. The upper die roller of the fourth forming unit is composed of, from left to right, a first section, a second section, a third section, a fourth section, a fifth section, and a sixth section; the first section, the second section, the third section, the fourth section, and the sixth section are all short cylinders, the diameter of the first section is smaller than that of the second section, the diameter of the second section is larger than that of the third section, and the diameter of the third section is smaller than that of the first section and larger than that of the fourth section; the axial length of the fourth section is equal to twice the thickness of the steel strip; the fifth section is conical, the diameter of its small end is equal to that of the fourth section, and the diameter of its large end is equal to that of the sixth section; the diameter of the sixth section is equal to that of the second section; The lower die roller of the fourth forming unit is composed of the first section, the second section, the third section and the fourth section from left to right; the axial lengths of the first section and the fourth section are respectively equal to the first section and the sixth section of the upper die roller on this forming unit, and the second section corresponds to the second section of the upper die roller on the fourth forming unit; the third section is conical, the diameter of its small end is smaller than that of the second section, and the diameter of its large end is equal to that of the fourth section, and its axial length is equal to the sum of the axial lengths of the third section, the fourth section and the fifth section on the upper die roller of the fourth forming unit; when the upper and lower die rollers are in contact, the first section, the second section and the fourth section of the lower die roller are in contact with the longitudinal points of the roller surface of the first section, the second section and the sixth section of the upper die roller, respectively, thereby bending the third profile blank sent from the third forming unit into the fourth profile blank; The upper die roller of the fifth forming unit consists of, from left to right, the first, second, third, fourth, and fifth sections. The first, third, fourth, and fifth sections are all short cylinders, with the first section having a larger diameter than the second, the third section having a larger diameter than the fourth, and the fourth section having a larger diameter than the fifth. The second section is tapered, with an axial length twice the thickness of the steel strip. Its larger end is adjacent to the first section, with a smaller diameter than the first section, and a smaller diameter than the third section. This creates a gap between the edge of the third section and the first section. The lower die roller of the fifth forming unit consists of a first section and a second section. The axial length of the first section is equal to the axial length of the first section of the upper die roller of this forming unit, and the axial length of the second section is equal to the sum of the axial lengths of the third section and the fourth section of the upper die roller of this forming unit. The axial direction of the side roller is vertically arranged and perpendicular to the axial directions of the upper and lower die rollers. When in operation, the roller surface of the side roller, the roller surface of the fourth section of the upper die roller, and the roller surface of the second section of the lower die roller work together to bend the fourth profile blank into the fifth profile blank. The upper die roller of the sixth molding unit consists of, from left to right, a first section, a second section, a third section, a fourth section, a fifth section, and a sixth section; the first, second, fourth, fifth, and sixth sections are all short cylinders, and the third section is tapered; the diameter of the first section is smaller than that of the second section, the diameter of the second section is equal to that of the small end of the third section, the diameter of the large end of the third section is equal to that of the fourth section, the diameter of the fourth section is greater than that of the fifth section, and the diameter of the fifth section is greater than that of the sixth section; wherein the axial length of the fifth section is greater than that of the sixth section; The lower die roller of the sixth forming unit is composed of a first section, a second section, a third section, a fourth section, and a fifth section from left to right; the third section is conical, and its taper is equal to the taper of the third section of the upper die roller on this forming unit and the axial direction is opposite; the diameter of the first section is larger than that of the second section, the diameter of the second section is equal to the large end of the third section, the diameter of the small end of the third section is equal to that of the fourth section, and the diameter of the fourth section is smaller than that of the fifth section; wherein the diameter of the fourth section is equal to the sum of the axial lengths of the fourth and fifth sections of the upper die roller of this forming unit; when in operation, the upper die roller and the lower die roller of this forming unit bend the fifth profile blank into the sixth profile blank; The upper die roller of the seventh forming unit is composed of, from left to right, a first section, a second section, a third section, a fourth section, and a fifth section, each of which is a short cylinder; wherein the diameter of the first section is smaller than that of the second section, the diameter of the second section is larger than that of the third section, the diameter of the third section is larger than that of the fourth section, and the diameter of the fourth section is larger than that of the fifth section; a circumferential step is provided at one end of the second section adjacent to the third section, so that a circumferential gap is formed between the edge of the third section and the second section, and the circumferential gap is not less than twice the thickness of the steel strip; The lower die roller of the seventh forming unit is composed of the first section, the second section, the third section and the fourth section from left to right; the diameter of the first section is larger than that of the second section, the diameter of the second section is smaller than that of the third section, and the diameter of the third section is smaller than that of the fourth section; the axial lengths of the first section, the second section and the fourth section are respectively equal to the first section, the second section and the fifth section of the upper die roller in this forming unit, and the axial length of the third section is equal to the sum of the third section, the fourth section and the gap of the upper die roller in this forming unit; when working, the upper die roller and the lower die roller of this forming unit bend the sixth profile blank into the seventh forming blank.

2. The photovoltaic module frame profile production line according to claim 1, characterized in that: The welding machine is a laser welding machine, which includes a bracket, a laser gun and a laser emitter; the bracket is 7-shaped, and its vertical part is vertically fixed on the second frame; the laser gun is rod-shaped, and is vertically connected to the horizontal part of the bracket, with its laser emission head facing downward and facing the stack of U-shaped groove horizontal parts on the seventh molded blank; the laser emitter is connected to the tail of the laser gun by means of an optical fiber.

3. The photovoltaic module frame profile production line according to claim 1, characterized in that: The second frame before the welding machine is provided with a front limiting mechanism for limiting the seventh forming blank; the front limiting mechanism comprises at least two limiting units; the limiting unit comprises an upper wheel axle and a lower wheel axle, the upper and lower wheel axles are parallel, and both ends of them are connected to the second frame by means of a pin seat and a bearing; the upper and lower wheel axles are respectively provided with an upper shaping wheel and a lower shaping wheel, the outer circle of the lower shaping wheel is provided with a circumferential groove, the depth and width of the circumferential groove are respectively adapted to the width and length of the cross section of the seventh forming blank; the axial length of the upper shaping wheel is equal to that of the lower shaping wheel, and one end of the upper shaping wheel is provided with a circumferential protrusion; the width and height of the circumferential protrusion are respectively adapted to the width and depth of the U-shaped groove on the cross section of the seventh forming blank; when working, the seventh forming blank is placed in the circumferential groove on the lower shaping wheel in a moving state, and the notch of the U-shaped groove on the cross section of the seventh forming blank faces outward; The circumferential protrusion at one end of the upper shaping wheel is movably placed in the U-shaped groove on the cross section of the seventh forming blank, and the roller surface of the upper shaping wheel other than the circumferential protrusion is movably pressed on one surface of the seventh forming blank other than the U-shaped groove, thereby tightly limiting the horizontal part of the U-shaped groove on the cross section of the seventh forming blank between the upper shaping wheel and the lower shaping wheel.

4. The photovoltaic module frame profile production line according to claim 1, characterized in that: The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket. The circumferential protrusion at one end of the upper shaping wheel is movably placed in the U-shaped groove on the cross section of the seventh forming blank, and the roller surface of the upper shaping wheel other than the circumferential protrusion is movably pressed on one surface of the seventh forming blank other than the U-shaped groove, thereby tightly limiting the horizontal part of the U-shaped groove on the cross section of the seventh forming blank between the upper shaping wheel and the lower shaping wheel.

5. The photovoltaic module frame profile production line according to claim 1, characterized in that: The cutting machine includes a fixed frame; the fixed frame is plate-shaped, comprising a vertical portion, the lower portion of the vertical portion has a forward 90-degree bent portion and an upward 90-degree bent portion in sequence; the plate surface of the vertical portion of the fixed frame is perpendicular to the longitudinal direction of the third frame; the forward 90-degree bent portion of the fixed frame is connected to the third frame, and the upper and middle portions of the inner side plate walls of the vertical portion are connected to horizontally arranged guide rails; a movable frame is provided on the front side of the fixed frame, and a slider is connected to one side of the movable frame adjacent to the fixed frame; the slider is U-shaped, arranged horizontally, corresponding to the guide rail, and its horizontal portion is connected to the vertical portion of the movable frame, and it is slidably buckled on the corresponding guide rail; A moving motor is connected to the upper front portion of the moving frame. The output shaft of the moving motor is perpendicular to the plate surface of the moving frame, and the outer end of the output shaft passes through the moving frame and is connected to a gear. A horizontally arranged rack is connected to one side of the vertical portion of the fixed frame adjacent to the moving frame. The rack is located under the upper guide rail, and the gear is meshed with the rack. A lifting motor is connected to the upper front portion of the movable frame, the output shaft of the lifting motor is downwardly directed and connected to a cutting motor; the output shaft of the cutting motor is horizontally arranged, and a circular saw blade is connected to the outer end thereof; A clamping portion is connected to the lower portion of the front side of the movable frame; the clamping portion is composed of a base plate and a pressure block connected to the base plate; a longitudinal through groove is formed below the pressure block, and a transverse flat groove is formed above the pressure block to cooperate with the circular saw blade; the lower portion of the longitudinal through groove has a rectangular cross-section, and a first longitudinal flat groove and a first longitudinal lower protrusion are formed at the bottom of the groove with an inverted U-shaped cross-section, the first longitudinal flat groove and the first longitudinal lower protrusion respectively corresponding to the second longitudinal protrusion and the second longitudinal flat groove on the upper side of the seventh forming blank; A cylinder is connected to the bottom plate corresponding to the longitudinal groove, and the piston rod of the cylinder is upward and connected to an upper push block; through the extension of the cylinder piston rod, the seventh formed blank can be clamped between the upper push block and the bottom of the longitudinal groove of the pressing block.

6. The photovoltaic module frame profile production line according to claim 5, characterized in that: The moving motor, lifting motor and cutting motor are all servo motors, and are connected to the controller through wires.

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