Overlock sewing machine for photovoltaic support plate

Abstract

The utility model provides an overlock sewing machine of a photovoltaic support plate, which comprises five positioning rollers which are sequentially arranged along an advancing direction, and further comprises a first compression roller, a second compression roller, a third compression roller, a fourth compression roller and a fifth compression roller which are sequentially arranged along the advancing direction, the first pressing roller and the second pressing roller comprise first straight parts located on the upper portions and first bent parts located on the lower portions, the first bent parts are used for bending the folded edges, and a first overpressing roller is further arranged between the first pressing roller and the second pressing roller; the third compression roller comprises a second straight part and a second bent part, and the second straight part is parallel to the second bent part; each of the fourth compression roller and the fifth compression roller comprises a third straight part positioned at the lower part and a third bent part positioned at the upper part; and a second overpressure roller is also arranged between the fourth compression roller and the fifth compression roller. By applying the technical scheme, the utility model provides the overlock sewing machine capable of carrying out overlock sewing on the photovoltaic support plate.

Description

Technical Field

[0001] The utility model relates to an edge locking machine for a photovoltaic support plate. Background Art

[0002] Photovoltaic mounting panels, a crucial component of a photovoltaic system, secure photovoltaic modules to rooftops or other supporting structures. These panels are typically made of metal or other durable materials, ensuring they maintain structural stability and corrosion resistance in harsh outdoor environments. To achieve optimal illumination and system stability, the mounting panels must not only be securely fastened to the supporting structure but also interconnected to ensure the integrity and durability of the entire photovoltaic system.

[0003] During the installation of photovoltaic panels, the panels are typically locked to the roof of a building. Adjacent photovoltaic panels are connected by side supports, which need to be securely fastened to a fixed frame mounted on the roof. The overlapping portions of the side supports can constitute weaknesses in the photovoltaic panel system. If not properly addressed, problems such as water leakage, loosening, or panel displacement may occur, affecting the service life and power generation efficiency of the photovoltaic modules. Therefore, the edges of photovoltaic panels typically need to be folded and locked to ensure they can withstand long-term erosion from the external environment and maintain structural stability. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a locking machine capable of locking the edges of photovoltaic bracket panels.

[0005] In order to solve the above technical problems, the utility model provides a photovoltaic bracket board edge locking machine, wherein two adjacent photovoltaic bracket boards can overlap the upper and lower sides of a fixed frame to form a folded edge, and the photovoltaic bracket board also forms a recessed portion, and the edge locking machine includes five positioning rollers arranged in sequence along a travel direction, and the edge locking machine also includes a first pressing roller, a second pressing roller, a third pressing roller, a fourth pressing roller and a fifth pressing roller arranged in sequence along the travel direction; the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller correspond to the five positioning rollers respectively;

[0006] The first and second pressing rollers include a first straight portion located at the top and a first bent portion located at the bottom, the first bent portion being used to bend the flanging edge, and a first over-pressing roller is further provided between the first and second pressing rollers; the third pressing roller includes a second straight portion and a second bent portion, the second straight portion and the second bent portion being parallel to each other; the fourth and fifth pressing rollers include a third straight portion located at the bottom and a third bent portion located at the top, and a second over-pressing roller is further provided between the fourth and fifth pressing rollers;

[0007] When the photovoltaic support plate moves along the traveling direction, the positioning roller moves in the recessed portion, and the folded edge passes through the first pressing roller, the first over-pressing roller, the second pressing roller and the third pressing roller to bend inward until it is close to the photovoltaic support plate on the lower side to form a stacked edge, and the stacked edge passes through the fourth pressing roller, the second over-pressing roller and the fifth pressing roller to bend downward.

[0008] In a more preferred embodiment, the first bent portion is conical, the upper end of the first bent portion is connected to the first straight portion, the radial dimension of the first bent portion gradually increases from top to bottom, a first forming gap is formed between the first bent portion and the first straight portion, and the first forming gap of the first pressing roller is smaller than the first forming gap of the second pressing roller.

[0009] In a more preferred embodiment, the first over-pressure roller includes a first over-pressure roller surface, the first over-pressure roller surface is conical, the side of the first over-pressure roller surface away from the inner side of the folding edge is the small end, and the side of the first over-pressure roller surface close to the inner side of the folding edge is the large end.

[0010] In a more preferred embodiment, the second bent portion is conical, the upper end of the second straight portion is connected to the second bent portion, the radial dimension of the second bent portion gradually increases from top to bottom, a second forming gap is formed between the second bent portion and the second straight portion, and the second forming gap of the fourth pressing roller is smaller than the second forming gap of the fifth pressing roller.

[0011] In a more preferred embodiment, the second over-pressure roller includes a second over-pressure roller surface, the second over-pressure roller surface is conical, the side of the second over-pressure roller surface away from the inner side of the folding edge is the small end, and the side of the second over-pressure roller surface close to the inner side of the folding edge is the large end.

[0012] In a more preferred embodiment, the positioning roller is tapered with a larger upper portion and a smaller lower portion.

[0013] In a more preferred embodiment, it also includes a frame, and the positioning roller, the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller are rotatably arranged on the lower bottom surface of the frame, and the positioning roller, the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller are respectively provided with a driving mechanism.

[0014] In a more preferred embodiment, the driving mechanism includes a gear group and a driving motor arranged on the frame; the gear group is synchronously connected to the positioning roller, the first pressure roller, the second pressure roller, the third pressure roller, the fourth pressure roller and the fifth pressure roller, respectively, and the driving motor is used to drive the gear group.

[0015] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0016] The first and second pressing rollers include a first straight portion located above and a first bent portion located below, the first bent portion being used to bend the folded edge, and a first over-pressing roller is further provided between the first and second pressing rollers; the third pressing roller includes a second straight portion and a second bent portion, the second straight portion and the second bent portion being parallel to each other; the fourth and fifth pressing rollers include a third straight portion located below and a third bent portion located above, and a second over-pressing roller is further provided between the fourth and fifth pressing rollers; when the photovoltaic support panel moves along the travel direction, the positioning roller moves within the recessed portion, and the folded edge passes through the first, first over-pressing, second, and third pressing rollers to bend inward until it abuts against the photovoltaic support panel located below, thereby forming a stacked edge, and the stacked edge passes through the fourth, second over-pressing, and fifth pressing rollers to bend downward. The overlocking machine achieves automatic bending and overlocking operations through the cooperation of the positioning rollers and the pressing rollers throughout the entire process. The equipment automatically completes the edge-locking process, reducing the complexity and potential errors associated with manual operation. Thanks to the precise coordination between the edge-locking machine's rollers and the effective compensation of the over-pressure roller for elastic rebound, the accuracy and tightness of the folded edges are guaranteed. The resulting laminated edges are stable and consistent, improving the overall installation quality and durability of the photovoltaic support panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional schematic diagrams of the overlock machine in the preferred embodiment of the present utility model;

[0018] Figure 2 This is the second three-dimensional schematic diagram of the overlock machine in the preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the first side branch structure, the second side branch structure and the fixing frame being overlapped in a preferred embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the first side branch structure, the second side branch structure and the fixing frame after locking the edges in the preferred embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the first pressing roller in the preferred embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the second pressing roller in the preferred embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the third pressing roller in the preferred embodiment of the present utility model;

[0024] Figure 8 This is a schematic diagram of the fourth pressing roller in the preferred embodiment of the present utility model;

[0025] Figure 9 This is a schematic diagram of the fifth pressing roller in the preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] See Figures 1-9 , a locking machine for the photovoltaic support panel, wherein the photovoltaic support panel is a plate-shaped structure, and a first side branch structure 10 and a second side branch structure 20 are formed on both sides of the photovoltaic support panel. The first side branch structure 10 includes a first platform section 110, and a recessed portion 120 is formed in the middle portion of the first platform section 110. The upper side of the recessed portion 120 is smaller than the lower side of the recessed portion 120 to form a step 130. The end of the first platform section 110 is bent downward to form a first bending section 140. The second side branch structure 20 includes a second platform section 210, and the end of the second platform section 210 is bent downward to form a second bending section 220. The photovoltaic bracket plate is used to be locked on the roof, and a fixing frame 30 is provided on the roof. The fixing frame 30 includes a fixing groove 310 and a support plate 320 arranged on one side of the fixing groove 310. When the first side branch structure 10 and the second side branch structure 20 of two adjacent photovoltaic bracket plates are overlapped, the second side branch structure 20 is correspondingly arranged on the lower side of the support plate 320, and the first side branch structure 10 is correspondingly arranged on the upper side of the support plate 320. The recessed portion 120 is inserted into the fixing groove 310, the first platform section 110 is correspondingly abutted against the upper side of the support plate 320, and the second platform section 210 is correspondingly abutted against the lower side of the support plate 320, forming a folded edge 40, and the folded edge 40 includes a horizontal section 410 and a vertical section 420.

[0028] The overlock machine includes a frame 1 and a drive mechanism 2. The frame 1 includes a lower base plate 11 and an upper plate 12. A receiving space is formed between the lower base plate 11 and the upper plate 12. The lower bottom surface of the lower base plate 11 is provided with five positioning rollers 3 and a first pressing roller 41, a second pressing roller 42, a third pressing roller 43, a fourth pressing roller 44, and a fifth pressing roller 45. The five positioning rollers 3 are arranged in sequence along a travel direction. The first pressing roller 41, the second pressing roller 42, the third pressing roller 43, the fourth pressing roller 44, and the fifth pressing roller 45 correspond to the five positioning rollers 3, respectively.

[0029] The first pressing roller 41 and the second pressing roller 42 include a first straight portion 411 located at the top and a first bent portion 412 located at the bottom, the first bent portion 412 is used to bend the flanging edge 40, and a first over-pressing roller 51 is further provided between the first pressing roller 41 and the second pressing roller 42; the third pressing roller 43 includes a second straight portion 431 and a second bent portion 432, the second straight portion 431 and the second bent portion 432 are parallel; the fourth pressing roller 44 and the fifth pressing roller 45 include a third straight portion 442 located at the bottom and a third bent portion 443 located at the bottom. The third bending portion 441 above, a second over-pressure roller 52 is also provided between the fourth pressure roller 44 and the fifth pressure roller 45; when the photovoltaic support board moves along the traveling direction, the positioning roller 3 moves in the recessed portion 120, and the folded edge 40 passes through the first pressure roller 41, the first over-pressure roller 51, the second pressure roller 42 and the third pressure roller 43 to bend inward until it is close to the photovoltaic support board located on the lower side to form a stacking edge 50, and the stacking edge 50 passes through the fourth pressure roller 44, the second over-pressure roller 52 and the fifth pressure roller 45 to bend downward.

[0030] The first pressing roller 41, the second pressing roller 42, the third pressing roller 43, the fourth pressing roller 44, the fifth pressing roller 45 and the positioning roller 3 are rotatably arranged on the lower bottom surface. The upper ends of the first pressing roller 41, the second pressing roller 42, the third pressing roller 43, the fourth pressing roller 44, the fifth pressing roller 45 and the positioning roller 3 are all provided with a gear and are located in the accommodating space. These gears are part of a gear set. The driving mechanism 2 includes the gear set and a driving motor, and the driving motor drives the gear set to rotate.

[0031] During the hemming operation, the horizontal section 410 of the flanging edge 40 corresponds to the first straight portion 411 of the first pressing roller 41, and the positioning roller 3 corresponds to the recessed portion 120. As the first pressing roller 41 and positioning roller 3 rotate, the flanging edge 40 is driven to move. At this point, the vertical section 420 of the flanging edge 40 is bent inward by the first bending portion 412 of the first pressing roller 41. Subsequently, the vertical section 420 and the horizontal section 410 are bent upward to a certain extent by the first over-pressing roller 51. The first bending portion 412 of the second pressing roller 42 further bends the vertical section 420 of the flanging edge 40. The second straight portion 431 and the second bending portion 432 of the third pressing roller 43 cause the vertical section 420 to abut against the underside of the horizontal section 410, forming a laminated edge 50. The stacked edge 50 then passes through the fourth pressing roller 44. The upper side of the fourth pressing roller 44 is the third bending portion 441, and the lower side is the third straight portion 442. Due to the action of the third bending portion 441, the stacked edge 50 is bent downward; then, when passing through the second over-pressing roller 52, the stacked edge 50 is bent upward to a certain extent, and when passing through the fifth pressing roller 45, it comes out of the fifth pressing roller 45, and the bending is completed.

[0032] During the hemming operation, the first overpressure roller 51 and the second overpressure roller 52 serve a compensatory function, effectively resolving the rebound problem caused by the elastic deformation of the profile. First, when the folded edge 40 passes through the first bend 412, the vertical section 420 will rebound due to the elastic deformation of the material itself, resulting in an insufficient bending of the folded edge 40. At this point, the first overpressure roller 51 is configured to compensate for this rebound, allowing the vertical section 420 and the horizontal section 410 of the folded edge 40 to be folded upward to a predetermined degree after passing through the first overpressure roller 51, ensuring a smooth hemming process. Similar to the first overpressure roller 51, the second overpressure roller 52 also serves to compensate for this rebound.

[0033] In this embodiment, the first bent portion 412 is tapered, with its upper end connected to the first straight portion 411. The radial dimension of the first bent portion 412 gradually increases from top to bottom, forming a first forming gap between the first bent portion 412 and the first straight portion 411. The first forming gap of the first pressing roller 41 is smaller than the first forming gap of the second pressing roller 42. The first over-pressing roller 51 includes a first over-pressing roller surface 511. The first over-pressing roller surface 511 is tapered, with the side of the first over-pressing roller surface 511 away from the inner side of the flange 40 being the smaller end and the side of the first over-pressing roller surface 511 closer to the inner side of the flange 40 being the larger end. The second bent portion 432 is tapered, and the upper end of the second straight portion 431 is connected to the second bent portion 432. The radial dimension of the second bent portion 432 gradually increases from top to bottom. A second forming gap is formed between the second bent portion 432 and the second straight portion 431. The second forming gap of the fourth pressing roller 44 is smaller than the second forming gap of the fifth pressing roller 45. The second over-pressing roller 52 includes a second over-pressing roller surface 521. The second over-pressing roller surface 521 is tapered, with the side of the second over-pressing roller surface 521 away from the inner side of the flange 40 being the smaller end and the side of the second over-pressing roller surface 521 closer to the inner side of the flange 40 being the larger end.

[0034] In this embodiment, the positioning roller 3 is in a conical shape with a larger top and a smaller bottom, and is configured to fit into the recessed portion 120 .

[0035] The above is only a preferred specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A photovoltaic bracket board edge locking machine, wherein two adjacent photovoltaic bracket boards can be overlapped on the upper and lower sides of a fixing frame to form a folded edge, and the photovoltaic bracket board also forms a recessed portion, characterized in that: The overlocking machine includes five positioning rollers arranged in sequence along a travel direction, and the overlocking machine also includes a first pressing roller, a second pressing roller, a third pressing roller, a fourth pressing roller and a fifth pressing roller arranged in sequence along the travel direction; the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller correspond to the five positioning rollers respectively; The first and second pressing rollers include a first straight portion located at the top and a first bent portion located at the bottom, the first bent portion being used to bend the flanging edge, and a first over-pressing roller is further provided between the first and second pressing rollers; the third pressing roller includes a second straight portion and a second bent portion, the second straight portion and the second bent portion being parallel to each other; the fourth and fifth pressing rollers include a third straight portion located at the bottom and a third bent portion located at the top, and a second over-pressing roller is further provided between the fourth and fifth pressing rollers; When the photovoltaic support plate moves along the traveling direction, the positioning roller moves in the recessed portion, and the folded edge passes through the first pressing roller, the first over-pressing roller, the second pressing roller and the third pressing roller to bend inward until it is close to the photovoltaic support plate on the lower side to form a stacked edge, and the stacked edge passes through the fourth pressing roller, the second over-pressing roller and the fifth pressing roller to bend downward.

2. The photovoltaic bracket board edge locking machine according to claim 1, characterized in that: The first bending portion is conical, the upper end of the first bending portion is connected to the first straight portion, the radial dimension of the first bending portion gradually increases from top to bottom, and a first forming gap is formed between the first bending portion and the first straight portion. The first forming gap of the first pressing roller is smaller than the first forming gap of the second pressing roller.

3. The photovoltaic bracket board edge locking machine according to claim 2, characterized in that: The first over-pressure roller includes a first over-pressure roller surface, which is conical, with the side of the first over-pressure roller surface away from the inner side of the folding edge being the small end, and the side of the first over-pressure roller surface close to the inner side of the folding edge being the large end.

4. The photovoltaic bracket board edge locking machine according to claim 3, characterized in that: The second bending portion is conical, the upper end of the second straight portion is connected to the second bending portion, the radial dimension of the second bending portion gradually increases from top to bottom, and a second forming gap is formed between the second bending portion and the second straight portion. The second forming gap of the fourth pressing roller is smaller than the second forming gap of the fifth pressing roller.

5. The photovoltaic bracket board edge locking machine according to claim 4, characterized in that: The second over-pressing roller includes a second over-pressing roller surface, which is conical. The side of the second over-pressing roller surface away from the inner side of the folding edge is the small end, and the side of the second over-pressing roller surface close to the inner side of the folding edge is the large end.

6. The photovoltaic bracket board edge locking machine according to claim 5, characterized in that: The positioning roller is in a cone shape with a larger upper portion and a smaller lower portion.

7. The photovoltaic bracket board edge locking machine according to claim 6, characterized in that: It also includes a frame, and the positioning roller, the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller are rotatably arranged on the lower bottom surface of the frame, and the positioning roller, the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller are respectively connected to a driving mechanism.

8. The photovoltaic bracket board edge locking machine according to claim 7, characterized in that: The driving mechanism includes a gear set and a driving motor arranged on the frame; the gear set is synchronously connected to the positioning roller, the first pressing roller, the second pressing roller, the third pressing roller, the fourth pressing roller and the fifth pressing roller respectively, and the driving motor is used to drive the gear set.

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