A material band continuous feeding device

Abstract

The application relates to the technical field of photovoltaic module production equipment, and discloses a material belt continuous feeding equipment, a heating and welding mechanism is fixedly arranged between a rear end pressing mechanism and upper and lower front end pressing mechanisms, and is used for heating and welding a tail end of the material belt pressed by the rear end pressing mechanism and a head of the material belt pressed by the upper or lower front end pressing mechanism. A wheel set comprises a stepped material guide wheel set and a stepped steering wheel set arranged on the upper end of the upper front end pressing mechanism and the upper end of a rubber film head respectively. In the application, each feeding set is provided with two groups of feeding mechanisms, one group works and the other group feeds in advance for standby, the tail of the material of the previous group and the head of the material of the next group are automatically welded through the heating and welding mechanism, continuous feeding is guaranteed, the time for replacing the material and threading the material into the equipment is saved, the difficulty of feeding and threading the material on the equipment is effectively reduced, the replacement time is greatly improved, and the replacement can be realized without stopping.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module manufacturing equipment technology, and in particular to a device for applying a gap film to the gaps in solar cells. Background Technology

[0002] Photovoltaic modules, or solar cell modules, are constructed by sealing a certain number of individual solar cells in series and parallel to prevent corrosion of the cell electrodes and interconnects, because the output voltage of a single solar cell is relatively low and the electrodes of unencapsulated cells are prone to detachment due to environmental influences.

[0003] In the production of photovoltaic modules, gap films are needed to fill the gaps between the solar cells. Existing installation equipment uses film applicators to apply the film to the modules, with the film roll positioned above each applicator. Because the area to be covered is large, the consumption of gap films is high, requiring frequent reloading. The numerous reloading points on the equipment make reloading inconvenient, and the need to stop the machine during reloading results in low equipment capacity. Summary of the Invention

[0004] Therefore, it is necessary to provide a continuous material feeding device to address the problems of frequent and inconvenient material feeding in existing gap membrane laying equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a continuous material feeding device for a material belt, comprising a conveyor line, wherein multiple sets of adhesive film applicators are provided laterally at the upper end of the conveyor line.

[0006] The feeding group comprises multiple sets distributed on both sides of the conveyor line. Each feeding group includes an upper material roller group and a lower material roller group with the same structure, which are distributed vertically. Both the upper and lower material roller groups include multiple sets of material rollers. The material belt is conveyed in a separate path through guide wheels. The multiple sets of material belts are arranged in parallel at the conveying end. The upper and lower material roller groups are respectively provided with an upper front pressing mechanism and a lower front pressing mechanism with the same structure at the discharge end, which are used to press the end of the material belt, move it vertically, and feed it forward.

[0007] The rear-end pressing mechanism is fixedly installed at the front end of the upper front-end pressing mechanism and the lower front-end pressing mechanism, and is used to cut and press the tail end of the material strip and feed it backward.

[0008] A heating and welding mechanism is fixedly installed between the rear end pressing mechanism and the upper and lower front end pressing mechanisms. It is used to heat and weld the tail end of the material strip pressed by the rear end pressing mechanism to the end of the material strip pressed by the upper or lower front end pressing mechanism.

[0009] The wheel assembly includes a stepped guide wheel assembly and a stepped steering wheel assembly respectively disposed on the upper end of the upper front pressing mechanism and the upper end of the adhesive film applicator, which are used to transport the material belts discharged from the material loading groups on both sides of the conveyor line to the adhesive film applicator.

[0010] The feeding group is set on both sides of the conveyor line. Through the pressing mechanism and the heating and welding mechanism, the upper and lower groups of material rollers alternately feed the material, so as to achieve uninterrupted material supply and facilitate feeding.

[0011] In one embodiment, both the upper and lower front-end pressing mechanisms include a first material seat that is raised and lowered by a connecting pusher cylinder. The upper end of the first material seat is provided with a cylinder head for pressing the material strip. The first material seat is displaced back and forth by a front pusher cylinder. This enables feeding of the end of the material strip after loading.

[0012] In one embodiment, the feeding end of the first material holder is equipped with a sensor for detecting whether there is a material shortage. After a material shortage is detected, the pressing mechanism and the heating welding mechanism start working to weld the tail end of the upper material group to the front end of the lower material group.

[0013] In one embodiment, the heating and welding mechanism includes a hot press plate and a heating seat, which are switched between an open state and a clamping state by a welding clamping cylinder. This is used to heat and fix the tail end of the upper material assembly and the front end of the lower material assembly.

[0014] In one embodiment, the rear-end pressing mechanism includes a second material seat and an upper pressing head. The second material seat and the upper pressing head are switched between an open state and a clamping state by an upper pressing cylinder to press the tail end of the material strip. The rear end of the second material seat is provided with a cutter for cutting the material strip. The second material seat is displaced back and forth by a rear pushing cylinder. This is used to clamp the rear end of the front group of material and move it to the welding position for fixed welding.

[0015] In one embodiment, the cutter is raised and lowered by a cutting cylinder located at the bottom of the second material holder. A blade holder is fixedly mounted on the upper end of the cutter, and the material strip passes between the cutter and the blade holder. This is used to cut off the tail end of the previous batch of material.

[0016] In one embodiment, both the stepped guide wheel assembly and the stepped steering wheel assembly include multiple sets of guide wheels with horizontally arranged, stepped shafts and multiple sets of guide wheels with vertically arranged, stepped shafts. Multiple sets of vertical rollers are provided between the two sets of guide wheel assemblies. This allows material to be fed from the side and then conveyed to each adhesive film applicator. The material belt layout is simple and neat, facilitating maintenance and ensuring stable conveying.

[0017] In one embodiment, the rear end of the adhesive film applicator is provided with multiple sets of clamping claw mechanisms corresponding to the positions of multiple sets of adhesive film applicators. These clamping claw mechanisms can move towards the adhesive film applicator. The clamping claw mechanisms are used to grip the welding section of the material strip and cut it off using a cutter attached to the adhesive film applicator, transferring it to the end of the conveyor line. This is used to cut off the welding position to ensure a smooth application of the gap membrane.

[0018] In one embodiment, the bottom of the clamping claw mechanism is provided with a material collection groove to facilitate waste material collection.

[0019] Compared with the prior art, the continuous feeding device for material strips of the present invention has the following advantages:

[0020] In this invention, each feeding group is equipped with two feeding mechanisms, one working and the other feeding in advance. The tail of the previous group of materials and the head of the next group of materials are automatically welded by a heating welding mechanism to ensure continuous feeding. This eliminates the time required for material changing and inserting materials into the equipment, effectively reducing the difficulty of feeding and inserting materials into the equipment, greatly improving the material changing time, and ensuring that the machine does not stop when changing materials. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0024] Figure 3 This is a side view of the present invention;

[0025] Figure 4 This is a schematic diagram of the feeding assembly in this invention;

[0026] Figure 5 This is a front view of the feeding module in this invention;

[0027] Figure 6 This is a schematic diagram of the heating and welding mechanism in this invention;

[0028] Figure 7 This is a schematic diagram of the rear-end pressing mechanism in this invention;

[0029] Figure 8 This is a side view of the rear-end pressing mechanism in this invention;

[0030] Figure 9 This is a schematic diagram of the front-end pressing mechanism in this invention;

[0031] Figure 10 This is a front view of the front-end pressing mechanism in this invention.

[0032] In the attached image:

[0033] 1. Conveyor line; 11. Clamping claw mechanism; 2. Adhesive film applicator; 21. Stepped guide wheel assembly; 22. Stepped steering wheel assembly; 3. Feeding assembly; 3a. Upper material roller assembly; 3b. Lower material roller assembly; 4a. Upper front pressing mechanism; 4b. Lower front pressing mechanism; 41a. Upper pressing controller; 41b. Lower pressing controller; 42. Butt-connecting pusher cylinder; 43. First material seat; 44. Cylinder pressure head; 45. Guide wheel; 46. Front pusher cylinder; 5. Heating and welding mechanism; 51. Hot press plate; 52. Heating seat; 53. Welding clamping cylinder; 6. Rear pressing mechanism; 61. Second material seat; 62. Upper pressing cylinder; 63. Upper pressure head; 64. Cutter; 65. Cutter holder; 66. Cutting cylinder; 67. Rear pusher cylinder. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] exist Figure 1-2 In the illustrated embodiment, the present invention provides a technical solution: a continuous material feeding device for material strips, including a conveyor line 1, and 24 sets of adhesive film applicators 2 are arranged laterally at the upper end of the conveyor line 1. The adhesive film applicators 2 are existing technology and are used to apply material strips to photovoltaic modules.

[0036] Feeding group 3: There are four groups, which are distributed on both sides of conveyor line 1.

[0037] exist Figure 3-5 In the embodiment shown, the feeding group 3 includes an upper material roller group 3a and a lower material roller group 3b that are distributed vertically and have the same structure. Both the upper material roller group 3a and the lower material roller group 3b are provided with six arrays of detachable material rollers. The material strips on the material rollers are conveyed in separate paths through guide wheels. Each guide wheel is provided with a material strip groove and a tensioning device for stable feeding. The multiple material strips are arranged in parallel at the conveying end.

[0038] The upper material roller assembly 3a and the lower material roller assembly 3b are respectively equipped with an upper front pressing mechanism 4a and a lower front pressing mechanism 4b with the same structure at the discharge end, which are used to press the end of the material strip, move it up and down, and feed it forward.

[0039] exist Figure 9 , 10 In the illustrated embodiment, both the upper front pressing mechanism 4a and the lower front pressing mechanism 4b include: a first material seat 43 that is raised and lowered by a docking pusher cylinder 42; the first material seat 43 has six parallel material strip grooves through which the material strip of the material roller passes; the upper end of the first material seat 43 has six parallel cylinder pressure heads 44 for pressing the material strip; the first material seat 43 is displaced back and forth by a front pusher cylinder 46; the feeding end of the first material seat 43 has a guide wheel 45 for guiding the material, and the guide wheel 45 also has material strip grooves through which the material strip passes; a sensor for detecting whether there is a shortage of material is also provided. The pusher cylinder 42 of the upper front pressing mechanism 4a at the front end of the upper material roller group 3a is at the upper end of the first material seat 43, and the pusher cylinder 42 of the lower front pressing mechanism 4b at the front end of the lower material roller group 3b is at the lower end of the first material seat 43. The upper material roller assembly 3a and the lower material roller assembly 3b are also equipped with an upper pressure controller 41a and a lower pressure controller 41b at their front ends. These controllers have buttons to control each cylinder pressure head 44. During feeding, the end of the material strip, after being wound around the guide roller, can be passed through the material strip groove of the first material seat 43. Above and below the welding position, there are baffle plates (not shown in the figure) that allow workers to feed materials to a fixed length. The upper pressure controller 41a and the lower pressure controller 41b can control the clamping and fixing of each material strip end.

[0040] exist Figure 7 , 8 In the embodiment shown, the rear pressing mechanism 6 is fixedly disposed at the front end between the upper front pressing mechanism 4a and the lower front pressing mechanism 4b, and is used to cut and press the tail end of the upper material strip and feed it backward.

[0041] The rear pressing mechanism 6 includes a second material seat 61 and an upper pressing head 63. The second material seat 61 is provided with 6 sets of corresponding material strip grooves. The second material seat 61 and the upper pressing head 63 are switched between an open state and a clamping state by an upper pressing cylinder 62 to press the tail ends of the upper 6 sets of material strips. The rear end of the second material seat 61 is provided with a cutter 64 for cutting the material strip. The cutter 64 is raised and lowered by a cutting cylinder 66 located at the bottom of the second material seat 61. The upper end of the cutter 64 is provided with a knife holder 65 fixed to the rear end of the second material seat 61. The material strip passes between the cutter 64 and the knife holder 65. The second material seat 61 is moved back and forth by a rear pushing cylinder 67. This mechanism is provided with a base plate (not shown in the figure). The second material seat 61 is slidably mounted on the base plate by a track. The knife holder 65, the cutting cylinder 66 and the rear pushing cylinder 67 are all fixedly connected to the base plate.

[0042] like Figure 6 In the embodiment shown, the heating and welding mechanism 5 is fixedly disposed between the rear end pressing mechanism 6 and the upper front end pressing mechanism 4a and the lower front end pressing mechanism 4b, and is used to heat and weld the tail end of the material strip pressed by the rear end pressing mechanism 6 to the end of the material strip pressed by the upper front end pressing mechanism 4a or the lower front end pressing mechanism 4b.

[0043] Heating and welding mechanism 5: includes hot press plate 51 and heating seat 52. The hot press plate 51 and heating seat 52 are switched between open and clamped states by welding clamping cylinder 53. The heating seat 52 is provided with 6 heating platforms corresponding to 6 sets of material strips.

[0044] Wheel set: The wheel set includes a stepped guide wheel set 21 and a stepped steering wheel set 22 respectively set on the upper end of the upper front pressing mechanism 4a and the upper end of the adhesive film applying head 2, which are used to transport the material belts discharged from the feeding group 3 on both sides of the conveyor line 1 to the adhesive film applying head 2.

[0045] Both the stepped guide wheel group 21 and the stepped steering wheel group 22 include multiple groups of guide wheels with horizontal and stepped rotating shafts, and multiple groups of guide wheels with vertical and stepped rotating shafts. Multiple vertical rollers are provided between the two groups of guide wheels.

[0046] exist Figure 3 In the embodiment shown, the six sets of material belts conveyed from the rear pressing mechanism 6 enter the stepped guide wheel group 21 of the stepped steering wheel group 22 through guide wheels. At this time, the material belt is placed horizontally. Then, after passing through the six stacked steering wheels, it becomes a material belt that is transported vertically. There are six sets of vertical rollers between the two sets of guide wheel groups. Each material belt is attached to the rollers for transport to ensure that the steering material belt can be transported smoothly and to prevent guidance errors when entering the stepped steering wheel group 22.

[0047] exist Figure 2 In the illustrated embodiment, the six sets of material belts conveyed by the stepped steering wheel assembly 22 first pass through six guide wheels with vertical shafts and stepped distribution, and then, after turning, pass through guide wheels with horizontal shafts to enter the adhesive film application head 2, thus conveying the material belts on the side of the conveyor line 1 to each adhesive film application head 2. The stepped design ensures that each material belt can be synchronously conveyed to the designated adhesive film application head 2.

[0048] The rear end of each of the 24 adhesive film applicator heads 2 is equipped with 24 clamping jaw mechanisms 11 corresponding to the positions of the 24 adhesive film applicator heads 2. These clamping jaw mechanisms 11 can move towards the adhesive film applicator heads 2. In some embodiments, this can be achieved by setting servo modules on both sides or by setting rack and pinion tracks on both sides of the conveyor line 1. Motors at both ends of the clamping jaw mechanisms 11 drive gears to mesh with the racks. The clamping jaw mechanisms 11 are used to clamp the welding section of the material strip and cut it using the cutter on the adhesive film applicator head 2, transferring it to the end of the conveyor line 1. A receiving groove is provided at the bottom of the end of each clamping jaw mechanism 11.

[0049] The working principle of the present invention will be explained in detail below: When the upper material roller group 3a is feeding material normally, the personnel can feed the material to the lower material roller group 3b. The 6 groups of material strips correspond to the 6 groups of guide wheels 45 respectively. After passing through the material strip groove of the first material seat 43, the material strips are fixed in length by the baffles provided at the upper and lower ends of the heating and welding mechanism 5. The ends of the 6 groups of material strips are pressed and fixed by pressing down the pressing controller 41b.

[0050] When the sensor of the upper material roller assembly 3a detects a material shortage, the upper pressing cylinder 62 drives the upper pressing head 63 to press the six sets of material strips in the material strip groove of the second material seat 61. The cutting cylinder 66 controls the cutter 64 to cut them off. The cutter 64 resets, and the docking and pushing cylinder 42 of the upper front pressing mechanism 4a drives the first material seat 43 to move upward. At the same time, the docking and pushing cylinder 42 of the lower front pressing mechanism 4b drives the clamped rear set of material strip ends to move upward, and the material strips are aligned with the material strip groove of the second material seat 61. When the position is horizontal, the rear pusher cylinder 67 drives the tail end of the front strip pressed by the second material seat 61 to move toward the heating and welding mechanism 5. The front pusher cylinder 46 of the lower front pressing mechanism 4b drives the front end of the rear strip pressed by the first material seat 43 to move toward the heating and welding mechanism 5. The welding clamping cylinder 53 drives the hot press plate 51 and the heating seat 52 to clamp and heat press for welding. After the welding is completed, the hot press plate 51 and the heating seat 52 are reset, and then the upper front pressing mechanism 4a is fed.

[0051] When the welding point moves to the adhesive film applicator 2, the clamping claw mechanism 11 moves toward the adhesive film applicator 2 to clamp the welding section. The cutter of the adhesive film applicator 2 cuts it off, the clamping claw mechanism 11 resets and releases, and the waste material falls into the receiving trough.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous feeding device for a material belt, comprising a conveyor line (1), wherein multiple sets of adhesive film applicators (2) are transversely arranged at the upper end of the conveyor line (1), characterized in that: The feeding group (3) is provided in multiple groups and distributed on both sides of the conveyor line (1). The feeding group (3) includes an upper material roller group (3a) and a lower material roller group (3b) with the same structure and distributed vertically. Both the upper material roller group (3a) and the lower material roller group (3b) include multiple material rollers. The material belt is conveyed by guide wheels. The multiple material belts are arranged in parallel at the conveying end. The upper material roller group (3a) and the lower material roller group (3b) are respectively provided with an upper front pressing mechanism (4a) and a lower front pressing mechanism (4b) with the same structure at the discharge end, which are used to press the end of the material belt, move it vertically, and feed it forward. The rear pressing mechanism (6) is fixedly installed at the front end of the upper front pressing mechanism (4a) and the lower front pressing mechanism (4b), and is used to cut and press the tail end of the material strip and feed it backward. The rear pressing mechanism (6) includes a second material seat (61) and an upper pressing head (63). The second material seat (61) and the upper pressing head (63) are switched between an open state and a clamping state by an upper pressing cylinder (62) to press the tail end of the material strip. The rear end of the second material seat (61) is provided with a cutter (64) for cutting the material strip. The second material seat (61) is displaced back and forth by a rear pushing cylinder (67). Heating and welding mechanism (5), which is fixedly installed between the rear pressing mechanism (6) and the upper front pressing mechanism (4a) and the lower front pressing mechanism (4b), is used to heat and weld the tail end of the material strip pressed by the rear pressing mechanism (6) to the end of the material strip pressed by the upper front pressing mechanism (4a) or the lower front pressing mechanism (4b). The wheel set includes a stepped guide wheel set (21) and a stepped steering wheel set (22) respectively set on the upper end of the upper front pressing mechanism (4a) and the upper end of the adhesive film head (2), which are used to transport the material belts discharged from the feeding groups (3) on both sides of the conveyor line (1) to the adhesive film head (2). Both the upper front pressing mechanism (4a) and the lower front pressing mechanism (4b) include: a first material seat (43) that is raised and lowered by a docking pusher cylinder (42), the upper end of the first material seat (43) is provided with a cylinder head (44) for pressing the material strip, and the first material seat (43) is displaced back and forth by a front pusher cylinder (46).

2. The continuous feeding device for conveyor belts according to claim 1, characterized in that: The first material holder (43) is equipped with a sensor at the feed end for detecting whether there is a shortage of material.

3. The continuous feeding device for conveyor belts according to claim 1, characterized in that: The heating and welding mechanism (5) includes a hot press plate (51) and a heating seat (52). The hot press plate (51) and the heating seat (52) are switched between an open state and a clamping state by a welding clamping cylinder (53).

4. The continuous feeding device for conveyor belts according to claim 1, characterized in that: The cutter (64) is raised and lowered by a cutting cylinder (66) located at the bottom of the second material seat (61). A knife holder (65) is fixedly provided at the upper end of the cutter (64), and the material strip passes between the cutter (64) and the knife holder (65).

5. The continuous feeding device for conveyor belts according to claim 1, characterized in that: The stepped guide wheel group (21) and the stepped steering wheel group (22) both include multiple groups of guide wheels with horizontal and stepped rotating shafts, and multiple groups of guide wheels with vertical and stepped rotating shafts, with multiple vertical rollers between the two groups of guide wheels.

6. The continuous feeding device for conveyor belts according to claim 1, characterized in that: The rear end of the adhesive film applicator (2) is provided with multiple sets of clamping claw mechanisms (11) corresponding to the positions of multiple sets of adhesive film applicators (2). The multiple sets of clamping claw mechanisms (11) can be displaced toward the adhesive film applicator (2). The clamping claw mechanisms (11) are used to clamp the welding section of the strip and cut it off by the cutter on the adhesive film applicator (2) and transfer it to the end of the conveyor line (1).

7. The continuous feeding device for conveyor belts according to claim 6, characterized in that: The material clamping claw mechanism (11) has a material receiving groove at the bottom of its end.

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