Tension adjusting mechanism and photovoltaic module end strip cutting and laying machine

Abstract

The utility model discloses a tension adjusting mechanism and a photovoltaic module end strip cutting and laying machine. The tension adjusting mechanism comprises a first mounting rack, a second mounting rack and a third mounting rack, wherein the first mounting rack comprises two opposite mounting plates which are arranged at an interval; the swing shaft and the air swelling shaft are arranged in parallel at an interval; two ends of the swing shaft are respectively connected with the two mounting plates; the two ends of the tensioning shaft are connected with the two ends of the swing shaft through connecting frames correspondingly to form a quadrilateral swing structural part. The two induction limiting grooved wheels are coaxially arranged at the same end of the swing shaft in a sleeving mode, any induction limiting grooved wheel is provided with an induction groove which is concave inwards in the radial direction of the induction limiting grooved wheel, and the two induction grooves are arranged in an included angle mode. The two inductive switches are arranged at the bottoms of the two inductive limiting grooved wheels in a one-to-one correspondence mode and are both in circuit connection with the driver. When any inductive switch directly faces the corresponding inductive groove, a circuit between the inductive switch and the driver is connected or disconnected. An air cylinder for driving the swing shaft to rotate is omitted, the structure is simpler, cost is lower, and adjustment is more timely and simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic component production equipment, in particular to a tensioning adjustment mechanism and a photovoltaic component end strip cutting and laying machine. Background Art

[0002] EVA (ethylene vinyl acetate) is a key structural material commonly used in solar photovoltaic modules. It is used between the back of the solar cell and the glass top cloth to fix, insulate and protect. EVA is widely used in various photovoltaic modules, including polycrystalline silicon solar cell modules, monocrystalline silicon solar cell modules and amorphous silicon solar cell modules. It can effectively protect the cell and circuit system, improve the conversion efficiency of light energy and the life of the module.

[0003] Before lamination, the photovoltaic cell group needs to lay the EVA pads and battery cells on the component glass first, and then lay the EVA pads and backboard again, and finally enter the laminator for lamination. At present, in the process of cutting and laying the EVA pads, it has gradually evolved from manual single-machine operation to fully automatic machine operation. For example, the prior art (CN117226920B, CN117342328A, CN117712211B, CN117507053A) discloses relevant technical solutions for EVA large roll punching, cutting and precise laying. CN117507053A discloses a large roll unwinding mechanism, which includes an air expansion shaft and a first power component that drives it to rotate, and a tensioning mechanism includes a second power component and a tension roller. The second power component includes a second cylinder, a connecting plate, a connecting shaft and a swing arm. The second cylinder drives the connecting shaft to rotate to drive the tension roller to press on the roll, thereby realizing the tension adjustment of the roll. The tension adjustment mechanism of this solution needs to be realized by means of a power part such as a cylinder, which is relatively complex in structure and has a high cost. In order to solve the above technical problems, it is necessary to provide a new tension adjustment mechanism to solve the above problems. Utility Model Content

[0004] In view of at least one of the above-mentioned technical problems, the purpose of the present utility model is to provide a tensioning adjustment mechanism and a photovoltaic module end strip cutting and laying machine.

[0005] The technical solution of the utility model is:

[0006] One of the purposes of the present invention is to provide a tension adjustment mechanism, comprising:

[0007] The first mounting frame includes two mounting plates that are opposite to each other and spaced apart, and the two ends of the air expansion shaft of the large material roll are rotatably connected to the two mounting plates respectively;

[0008] A swing shaft, which is arranged in parallel with the gas expansion shaft and spaced apart, and whose two ends are respectively connected to the two mounting plates;

[0009] A tensioning shaft, whose axis is parallel to the swing shaft and whose two ends are respectively connected to the two ends of the swing shaft through a connecting frame to form a quadrilateral swinging structure, and the tensioning shaft is suitable for pressing against the material belt unwound from the large material roll;

[0010] Two sensing grooves are provided on one end of the swing shaft and are recessed inwardly along the radial direction of the swing shaft, and the two sensing grooves are arranged at an angle;

[0011] Two induction switches are arranged at the bottom of the two induction grooves in a one-to-one correspondence and both of the induction switches are connected to a driver circuit for driving the air expansion shaft to rotate;

[0012] When any of the sensing switches is directly facing the corresponding sensing groove, the circuit between the sensing switch and the driver is connected or disconnected.

[0013] Preferably, two induction limit groove wheels are sleeved on the same end of the swing shaft, and one of the induction limit groove wheels is provided with one induction groove.

[0014] Preferably, it also includes a limiting assembly arranged on the first mounting frame and the connecting frame to prevent the tensioning shaft from falling and pressing on the large material roll due to its own gravity when there is no material roll; the limiting assembly includes:

[0015] At least one supporting wheel is rotatably mounted on an inner side of one of the mounting plates facing the other mounting plate and is located below the swing shaft.

[0016] At least one limiting member has one end fixed to the connecting frame on the side where the supporting wheel is located and the other end slidably abuts against the supporting wheel.

[0017] Preferably, the number of the supporting wheels and the limiting members are both two and they are arranged in one-to-one correspondence;

[0018] The two support wheels are respectively arranged on the inner side surfaces of the two mounting plates facing each other and are opposite to each other. One end of any one of the limit members is fixedly connected to one of the connecting frames, and the other end is slidably abutted against the support wheel on the corresponding side.

[0019] Another object of the utility model is to provide a photovoltaic module end strip cutting and laying machine, including a frame, a conveying mechanism and a loading mechanism, the conveying mechanism passes through a set of opposite sides of the frame along a first direction and is used to convey the photovoltaic module into the frame for laying the end strips and convey the photovoltaic module out of the frame after the laying operation is completed, the loading mechanism is rotatably arranged on one side of the frame around an axis parallel to the horizontal plane and is used for loading large material rolls with a width corresponding to the length of the end strips of the photovoltaic module, characterized in that the loading mechanism includes the tensioning adjustment mechanism described in any of the above items, and the direction of the material roll unrolled by the loading mechanism is along a second direction perpendicular to the first direction in the horizontal plane.

[0020] Preferably, it also includes a punching mechanism, a cutting mechanism, a temporary storage unit and a conveying unit which are sequentially arranged behind the feeding mechanism along the material roll discharge direction.

[0021] Preferably, the cutting mechanism comprises:

[0022] A frame body, which is disposed on the frame and extends along the first direction;

[0023] A driving member, which is arranged on the frame;

[0024] A linear guide rail, which is disposed on the frame and extends along the first direction;

[0025] A slider, which is slidably disposed on the linear guide rail and connected to the driving end of the driving member;

[0026] a cutting knife assembly, which is arranged on the slider and comprises a first knife holder mounted on the slider and at least one cutting knife mounted on the first knife holder, wherein any one of the cutting knives partially protrudes upward from the outer side of the first knife holder along the third direction, and when there are two cutting knives, the two cutting knives are placed in an eight-shaped shape; and

[0027] The pressing block component is arranged above the frame.

[0028] Preferably, the temporary storage unit includes a plate-shaped carrier whose long side extends along the first direction, and at least three rows of baffles are arranged on the carrier at intervals along the second direction, and a placement space for temporarily storing a material strip is defined between any two adjacent rows of baffles, and a row of position sensors arranged along the extension direction of the carrier is provided at one end of any of the placement spaces, or at least one groove opened along the extension direction of the carrier is opened on any of the placement spaces on the carrier, and a row of position sensors arranged along its extension direction is provided in the groove at one end, and the position sensor is electrically connected to the transport unit.

[0029] Preferably, the transport unit comprises a three-axis moving module and a suction cup disposed at the bottom of the three-axis moving module for grabbing and laying the material strips.

[0030] Preferably, it also includes a material strip docking mechanism, which is arranged on a second mounting frame above the feeding mechanism and includes:

[0031] A first pressing assembly, which is disposed on the second mounting frame and includes a first pressing cylinder disposed at the bottom end of the upper surface of the second mounting frame and a first pressing member connected to the driving end of the first pressing cylinder;

[0032] A second pressing assembly, which is disposed on the second mounting frame and includes a second pressing cylinder disposed on the upper surface of the second mounting frame and a second pressing member connected to the driving end of the second pressing cylinder;

[0033] A hot-melt component is disposed below the second pressing member and fixed on the upper surface of the second mounting frame.

[0034] Compared with the prior art, the advantages of the utility model are:

[0035] The utility model discloses a tension adjustment mechanism and a photovoltaic module end strip cutting and laying machine. The tension adjustment mechanism eliminates the use of power components such as cylinder drive in the prior art to adjust the tension, and realizes real-time adjustment of the tension by establishing an electrical connection between two inductive limit groove wheels and two corresponding inductive switches provided on the end of the swing shaft and a driver driving the air expansion shaft to rotate. The structure is simpler, the cost is lower, and the adjustment is more timely and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0037] Figure 1 It is a structural schematic diagram of an angle of a feeding mechanism of a photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model (including a tensioning adjustment mechanism according to an embodiment of the utility model and no material roll on the air expansion shaft);

[0038] Figure 2 It is a structural schematic diagram of another angle of the feeding mechanism of the photovoltaic module end strip cutting and laying machine according to the embodiment of the utility model (including the tensioning adjustment mechanism according to the embodiment of the utility model and omitting part of the first mounting frame);

[0039] Figure 3 for Figure 2 A partial enlarged structural diagram of the middle A part;

[0040] Figure 4 This is a schematic structural diagram of a photovoltaic module end strip cutting and laying machine (with the frame omitted) according to an embodiment of the utility model;

[0041] Figure 5 This is a schematic diagram of the main structure of a photovoltaic module end strip cutting and laying machine (including a frame) according to an embodiment of the utility model;

[0042] Figure 6 It is a structural schematic diagram of the cutting mechanism of the photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model;

[0043] Figure 7 It is a structural schematic diagram of a temporary storage unit of a photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model;

[0044] Figure 8 for Figure 7 A schematic diagram of the partial enlarged structure of the middle B part;

[0045] Fig. 9 This is a schematic structural diagram of a first transport unit of a photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model;

[0046] Fig.10 It is a structural schematic diagram of a material strip docking mechanism of a photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model at one angle;

[0047] Fig.11 This is a structural schematic diagram from another angle of the material strip docking mechanism of the photovoltaic module end strip cutting and laying machine according to an embodiment of the utility model.

[0048] Among them: 11, feeding mechanism; 111, first mounting frame; 112, air expansion shaft; 113, tensioning adjustment mechanism; 1131, swing shaft; 1132, tensioning shaft; 1133, connecting frame; 1134, limiter; 1135, support wheel; 1136, induction limiter groove wheel; 11361, induction groove; 1137, induction switch; 114, second mounting frame; 115, first guide roller; 116, second guide roller; 117, third guide roller; 12, punching mechanism; 13, cutting mechanism; 131, frame; 132, driving member; 133, linear guide rail; 134, slider; 135, cutting knife assembly Parts; 1351, knife holder; 1352, cutting knife; 136, block component; 137, discharge rubber roller group; 1371, discharge rubber roller; 1372, pressure rubber roller; 14, temporary storage unit; 141, carrier plate; 142, baffle; 143, groove; 144, position sensor; 15, first transport unit; 151, three-axis moving module; 152, suction cup; 16, second transport unit; 17, material belt docking mechanism; 171, first pressing member; 172, first pressing cylinder; 173, second pressing member; 174, second pressing cylinder; 175, hot melt component; 100, frame; 200, conveying mechanism. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0050] A tension adjustment mechanism provided in an embodiment of the present utility model is used to perform tension adjustment on a material roll in a cutting and laying machine for photovoltaic module end strips (the material of the end strip can be selected from EVA or POE, and the end strip is in a "day" shape, including two parallel and spaced long cushion strips and three parallel and spaced short cushion strips). The large material roll refers to a material roll whose width corresponds to the length of the end strip on the photovoltaic module, that is, the material roll loaded by the unwinding mechanism mentioned in the above background art.

[0051] The structure and method of the tension adjustment mechanism 113 in the embodiment of the present utility model are different from the structure and method of using a cylinder drive to achieve tension in the above-mentioned prior art published documents. Specifically, in the embodiment of the present utility model, as Figures 1 to 3As shown, the tension adjustment mechanism 113 includes a first mounting frame 111, a swing shaft 1131, a tension shaft 1132, two connecting frames 1133, two limit members 1134, two support wheels 1135, two inductive limit groove wheels 1136 and two inductive switches 1137. The first mounting frame 111 includes two mounting plates that are opposite and spaced apart. The air expansion shaft 112 of the large material roll is horizontally rotatably arranged on the mounting plates on both sides of the first mounting frame 111. The two ends of the swing shaft 1131 are rotatably connected to the two mounting plates respectively, the axis of the swing shaft 1131 is parallel to the axis of the gas expansion shaft 112 and are both along the first direction, and the two sensing limit groove wheels 1136 are coaxially fixed on the same end of the swing shaft 1131, and each sensing limit groove wheel 1136 has a sensing groove 14311361 recessed along its radial direction on the outer peripheral wall, and the sensing grooves 14311361 of the two sensing limit groove wheels 1136 are not on the same axis, but form an angle (the specific angle is not described and limited, and the angle corresponding to the angle corresponds to the appropriate tension of the material belt, that is, one of the sensing grooves 14311361 corresponds to the upper limit of the tension, and the other sensing groove 14311361 corresponds to the lower limit of the tension). Correspondingly, an inductive switch 1137 connected to a driver (not shown) circuit is provided below each inductive limit groove wheel 1136, that is, two inductive switches 1137 are provided one by one on a fixed frame fixedly connected to the outer side surface of the first mounting frame 111 below the two inductive limit groove wheels 1136. A rod-shaped or long plate-shaped connecting frame 1133 is provided at both ends of the swing shaft 1131, one end of the two connecting frames 1133 is connected to the two ends of the tensioning shaft 1132, and the two ends of the tensioning shaft 1132 are connected to the other ends of the two connecting frames 1133. In other words, the swing shaft 1131, the tensioning shaft 1132 and the two connecting frames 1133 enclose a square swing structure with a hollow center. It should be noted that, since the swing shaft 1131 can swing, and the tensioning adjustment mechanism 113 is not equipped with a power part, i.e., a cylinder, as in the prior art (CN117507053A), when there is no material tape passing through, the tensioning shaft 1132 may fall downward under the action of gravity, and the material roll is just in front of and below the tensioning adjustment mechanism 113. At this time, the tensioning shaft 1132 may directly press on the material roll, thereby making it impossible to feed the material tape. Therefore, in the embodiment of the utility model, a stopper component is also provided between the first mounting frame 111 and the connecting frame 1133 to prevent the tensioning shaft 1132 from falling and pressing on the large material roll due to its own gravity when there is no material roll.Specifically, the limiting assembly includes a support wheel 1135 arranged on the inner side surface of the mounting plate of the first mounting frame 111, the axis of which is parallel to the axis of the gas expansion shaft 112 or the tensioning shaft 1132 or the swing shaft 1131, and a limiting member 1134 (such as a limiting rod with one end fixed to the corresponding connecting frame 1133 and the other end being a free end and arranged at an acute angle or an obtuse angle with the corresponding connecting frame 1133) is installed on each connecting frame 1133. The supporting wheel 1135 of the embodiment of the utility model is rotatable, the limiting member 1134 and the supporting wheel 1135 are in sliding contact, and the supporting wheel 1135 can support the limiting member 1134. The tensioning adjustment mechanism 113 of the embodiment of the utility model realizes the tensioning of the material belt in the following way: the driver drives the material belt to feed the material, and when the material belt passes through the tensioning adjustment mechanism 113, the tensioning shaft 1132 in the tensioning adjustment mechanism 113 is pressed against the material belt. Since the swing shaft 1131 can swing, the tensioning shaft 1132 will press against the material belt to make the material belt tense. When the tension is appropriate, that is, within the set range, the driver will not change the feeding rate. When the tension is excessive, that is, exceeds the set range, the swing shaft 1131 will be driven by the excessive tension to rotate in the direction of reducing the tension, thereby adjusting the tension. During the rotation of the swing shaft 1131, the sensing groove 14311361 will also change. When the adjusted swing angle exceeds the lower limit position, the sensing switch 1137 corresponding to the lower limit position does not correspond to the corresponding sensing groove 14311361, but contacts the outer wall surface of the corresponding sensing limit groove wheel 1136, so that the circuit between the sensing switch 1137 and the driver is turned on (any sensing switch 1137 and its corresponding When the sensing groove 14311361 on the sensing limit groove wheel 1136 is facing, the sensing switch 1137 and the driver are connected or disconnected. Here, the example of the sensing groove 14311361 and its corresponding sensing switch 1137 being disconnected is used for explanation. The principle is the same when connected and will not be repeated here. The driver will receive the sensing signal and give feedback in time to adjust the feeding speed of the material belt (because the previous feeding speed caused the material belt to be too tensioned, that is, the previous feeding speed was too slow, the feeding speed should be increased at this time) until the tension of the material belt is within the set appropriate tension range.Similarly, if the tension is too loose, the swing shaft 1131 will press the material belt under the action of gravity, that is, swing in the direction of increasing tension to adjust the tension. When the swing angle exceeds the lower limit position, the induction switch 1137 corresponding to the lower limit position does not correspond to its corresponding induction groove 14311361, but contacts the outer wall surface of its corresponding induction limit groove wheel 1136, so that the circuit between the induction switch 1137 and the driver is turned on. The driver will receive the induction signal and give feedback in time to adjust the feeding speed of the material belt (because the previous feeding speed is too loose, that is, the previous feeding speed is too fast, the feeding speed should be slowed down at this time), until the tension of the material belt is within the set appropriate tension range. It should be noted that the tension adjustment mechanism 113 of the utility model is not an improvement in the control logic, but in the structural layout of this tension adjustment, which belongs to the protection object of the utility model. In the embodiment of the utility model, the tension adjustment mechanism 113 eliminates the power components in the prior art such as cylinder drive to adjust the tension, and realizes real-time adjustment of the tension through two inductive limit groove wheels 1136 and two corresponding inductive switches 1137 set on the end of the swing shaft 1131 and establishing an electrical connection with the driver that drives the air expansion shaft 112 to rotate. The structure is simpler, the cost is lower, and the adjustment is more timely and simple. As an alternative embodiment, the inductive limit groove wheel 1136 is not set in the embodiment of the utility model, and the inductive groove 11361 is directly opened on the swing shaft 1131.

[0052] See also Figures 1 to 11 The cutting and laying machine of the embodiment of the utility model includes a frame 100, a conveying mechanism 200 and a feeding mechanism 11, a punching mechanism 12, a cutting mechanism 13, a temporary storage unit 14 and a handling unit. The feeding mechanism 11 of the embodiment of the utility model includes the above-mentioned tensioning adjustment mechanism 113. Among them, the air expansion shaft 112 is detachably horizontally overlapped on the mounting plates on both sides of the first mounting frame 111 and the air expansion shaft 112 is electrically connected to the driver (not shown), and the air expansion shaft 112 is driven by the driver to rotate to control the feeding of the material tape of the material roll. For the detachable connection structure and method of the air expansion shaft 112, refer to the description in the public patent document CN117507053 A, which will not be repeated here, and it is not the innovation point of the utility model.

[0053] The width of the material strip of the material roll in the embodiment of the utility model is consistent with the length of the short side of the end strip on the photovoltaic module. Therefore, it is only necessary to cut the material strip into material strips with the same width as the short side by the cutting mechanism 13. In other words, the feeding mechanism 11 in the embodiment of the utility model is used for feeding the short pad strips in the Japanese-shaped end strips.

[0054] The rack 100 includes an internal hollow rectangular parallelepiped frame and an external shell plate. For ease of description, in the embodiment of the utility model, the front-to-back direction of the rack 100 is described as the first direction, the left-to-right direction is described as the second direction, and the up-down direction is described as the third direction. That is, the first direction and the second direction are perpendicular to each other in the horizontal plane, and the first direction, the second direction and the third direction are perpendicular to each other in space. The conveying mechanism 200 passes through a set of opposite sides of the rack 100 from the bottom of the rack 100 along the first direction, that is, Figure 5 The front and rear sides shown are used to transport the photovoltaic modules to be laid with end strips into the rack 100 and fix them, so as to facilitate the subsequent laying of the end strips. The conveying mechanism 200 is a conventional mechanism for transporting photovoltaic modules in the prior art. The specific structure is not described in detail. It is a prior art and not a utility model point of the utility model. It is easy for those skilled in the art to know. In the embodiment of the utility model, the direction of the material roll unrolled by the feeding mechanism 11 is along a second direction perpendicular to the first direction.

[0055] In the embodiment of the utility model, the feeding mechanism 11 further includes a second mounting frame 114. Figure 2 As shown, the second mounting frame 114 is a substantially Z-shaped frame body 131, which is arranged above the tension adjustment mechanism 113. In front of the second mounting frame 114 (referring to the front of the material feeding direction), that is, Figure 5 The left side is also provided with a first guide roller 115 whose axis is parallel to the axis of the air expansion shaft 112 or the tensioning shaft 1132, and two second guide rollers 116 and third guide rollers 117 are provided at a distance from each other and not on the same vertical line behind the second mounting frame 114. The axes of the first guide roller 115, the second guide roller 116 and the third guide roller 117 are parallel and parallel to the air expansion shaft 112. The material strip first passes through the second guide roller 116, then the first guide roller 115, then bypasses the tensioning adjustment mechanism 113, and is finally transported to the punching mechanism 12 by the third guide roller 117.

[0056] In the embodiment of the utility model, Figure 5 As shown, the feeding mechanism 11 is arranged on the left side of the frame 100, and the punching mechanism 12, the cutting mechanism 13, the temporary storage unit 14, and the conveying unit are arranged in sequence along the second direction, that is, from left to right, that is, the punching mechanism 12, the cutting mechanism 13, the temporary storage unit 14, and the conveying unit are arranged in sequence behind the feeding mechanism 11 along the second direction, that is, as shown Figure 5 right side shown.

[0057] The punching mechanism 12 is a conventional structure. For details, please refer to the description in the existing patent document CN117712211B. The present utility model does not provide a specific description or limitation.

[0058] The cutting mechanism 13 is used to cut the material strip into strips whose length and width are consistent with the end strips of the photovoltaic module. Figure 6 As shown, the cutting mechanism 13 includes a frame 131, a driving member 132, a linear guide 133, a slider 134, a cutting blade assembly 135 and a pressure block. The frame 131 is a rectangular frame body 131 whose length direction extends along a first direction and is arranged on the frame 100. The driving member 132 is arranged on the frame 131. Optionally, the driving member 132 includes a motor, a transmission wheel and a transmission belt structure, which are not described in detail. The linear guide 133 is arranged on the frame 131 extending along the first direction, and the slider 134 is slidably fitted on the linear guide 133 and the slider 134 is fixedly connected to the driving end of the driving member 132, such as a transmission belt. The cutting blade assembly 135 is also fixed to the slider 134, such as Figure 6 The left side of the slider 134 is connected to the driving member 132 and the right side is connected to the cutter assembly 135. As for the cutter assembly 135, the cutter assembly 135 in the embodiment of the utility model includes a square plate-shaped first knife frame 1351 and two cutting knives 1352 installed on the first knife frame 1351. The upper end parts of the two cutting knives 1352 protrude from the outer side of the first knife frame 1351 (the upper end is shown in the figure) and are higher than the upper surface of the frame body 131. In the embodiment of the utility model, the two cutting knives 1352 are innovatively arranged in an eight-shaped arrangement, and the blades of the two cutting knives 1352 are arranged opposite to each other. When arranged in this way, the cutter assembly 135 can cut back and forth along the first direction instead of only cutting in one direction, which greatly improves the cutting efficiency. Compared with the structural method of the prior art that uses vertical lifting to achieve cutting, the cutting mechanism 13 of the embodiment of the utility model cuts along the horizontal direction, the material strip will not be subjected to the downward pressure of the cutter, the material strip will not be deformed and the cutting surface will be smoother. In order to facilitate the cutting of the material strip, the two ends of the cutting position of the material strip need to be fixed, and one end, that is, the front end, is pressed by a discharge rubber roller group 137, that is, a discharge rubber roller group 137 (discharge rubber roller 1371 and pressure rubber roller 1372) is also provided in front of the cutting mechanism, that is, behind the punching mechanism 12. Its specific structure and working principle can also be found in the description of CN117712211B in the existing public patent document, which will not be repeated here, and is not the innovation of the utility model. The other end, that is, the rear end, is flattened and fixed by a pressure block. The pressure block component 136 of the embodiment of the utility model is arranged on the frame 100 and is located above the frame 131. It can be selected to be able to be along the third direction, that is, as Figure 6 The vertical lifting block structure shown. Exemplarily, the block component 136 in the embodiment of the utility model includes a lifting cylinder (not shown) and a block (not shown) connected to the bottom end of the lifting cylinder. As an alternative embodiment, the number of cutting blades 1352 in the cutting assembly 135 can also be only one.

[0059] In the embodiment of the utility model, Figure 1 As shown, the transport unit includes a three-axis movable module 151 connected to the upper end of the frame 100 and a suction cup 152 arranged on the three-axis movable module 151. The three-axis movable module 151 can move along the first direction, the second direction and the third direction, so as to adjust the position of the suction cup 152 at the bottom in space. No description or limitation is made for the three-axis movable module 151, which is a conventional three-axis movable module 151 structure in the prior art, and can be easily known and implemented by those skilled in the art. For the suction cup 152, a conventional vacuum suction cup 152 in the prior art is adopted. The three-axis movable module 151 can absorb or lay when moving downward along the third direction, and keep the sucked object fixed between the suction cup 152 and prevent it from falling when moving upward. In the embodiment of the utility model, the suction cups 152 are arranged in rows along the length direction of the corresponding pad strip. In the embodiment of the utility model, the number of transport units may be only one. Preferably, the number of transport units may also be two. For example, as Figure 4 and Figure 5 As shown, for the convenience of description and distinction, the two transport units are described as the first transport unit 15 and the second transport unit 16, wherein the first transport unit 15 is arranged on the left side of the second transport unit 16, and the first transport unit 15 is used to move the material strips cut by the cutting mechanism 13 to the temporary storage unit 14 for temporary placement and at the same time to transport and lay the short pad strips on the photovoltaic module close to the temporary storage unit 14, while the second transport unit 16 is used to transport and lay the material strips on the temporary storage unit 14 to the photovoltaic module away from the temporary storage unit 14. In this way, the efficiency can be greatly improved. Preferably, the transport unit in the embodiment of the utility model is also provided with a hot air blowing mechanism (not shown), which is used to blow the pad strips to heat them so that they melt and stick them on the photovoltaic module. The heating temperature can be controlled and adjusted by thermocouple feedback, which is a prior art and not an innovation of the utility model. As an alternative embodiment, the first transport unit 15 or the second transport unit 16 in the embodiment of the utility model can also be other suction methods such as a suction nozzle, that is, including a three-axis moving module and a suction nozzle. The structures of the first transport unit 15 and the second transport unit 16 may also be different, that is, one uses a suction cup and the other uses a suction nozzle.

[0060] like Figure 7 and Figure 8 As shown, the temporary storage unit 14 of the present embodiment includes a rectangular plate-shaped carrier 141, and the long side of the carrier 141 extends along the first direction. Figure 5 The front-to-back direction shown. Figure 5As shown, three rows of baffles 142 are arranged at intervals in the left-right direction, and a placement space for temporarily storing a material strip is defined between any two adjacent pairs of baffles 142. In addition, in order to improve the ability of the subsequent transport unit to transport the material strip and accurately lay it at the short side laying position of the end strip of the photovoltaic module, a position sensor 144 electrically connected to the transport unit is also provided on the carrier 141. In order to set the position sensor 144, a long strip-shaped groove 143 extending along the first direction or a plurality of grooves 143 spaced apart along the first direction is provided on each placement space. In each placement space, for example, near one end, a position sensor 144 is provided. Figure 8 As shown on the right side or as Figure 5 A row of position sensors 144 are arranged in the groove 143 at the rear end shown in the figure, and are arranged along the extension direction of the groove 143. Among the multiple position sensors 144, the position sensor 144 at the middle position can usually be used as a reference standard, that is, when the material strip just covers the middle position sensor 144, the handling unit can directly lay the material strip in parallel along the second direction on the photovoltaic module without adjusting the position in the first direction. When the material strip is on other position sensors 144, the position sensor 144 will sense the actual position of the material strip, and calculate the deviation distance between it and the reference position of the middle position sensor 144 (that is, the actual position of the material strip on the photovoltaic module), and then feed it back to the handling unit. The handling unit will make a reverse adjustment along the first direction according to the deviation distance so that the material strip corresponds to its actual position on the photovoltaic module, thereby avoiding the deviation between the position and the actual position when the short pad strip is laid, resulting in poor laying quality. For the position sensor 144, it is an existing conventional photoelectric sensor, and the specific structure and principle are not described and limited, and those skilled in the art can easily know it. As an alternative embodiment, the groove 143 may not be provided on the carrier plate 141 , and the position sensor 144 may be directly provided on the carrier plate 141 .

[0061] In order to achieve the continuity of the material strip of the material roll and ensure the working rhythm of the equipment, the embodiment of the utility model also includes a material strip docking mechanism 17. Specifically, Figure 2 , Fig.10 and Fig.11 As shown, the material strip docking mechanism 17 is arranged on the second mounting frame 114 above the feeding mechanism 11, and includes a first pressing assembly, a second pressing assembly and a hot melt component 175. Figure 5From left to right, there are a first pressing assembly and a second pressing assembly spaced in sequence. The first pressing assembly includes a first pressing cylinder 172 disposed at the bottom of the upper surface of the second mounting frame 114 and a first pressing member 171 disposed on the upper surface of the second mounting frame 114 (preferably a pressing plate extending in the first direction in the embodiment of the utility model). There are two first pressing cylinders 172, which are disposed at the bottom of both ends of the first pressing member 171 and connected, that is, the driving end of the first pressing cylinder 172 is connected to the first pressing member 171, and the first pressing cylinder 172 drives the first pressing member 171 to move in the third direction, that is, as shown in FIG. Fig.10 or Fig.11 The vertical up and down lifting shown in the figure can flatten and clamp the material strip on the upper surface of the second mounting frame 114 when it is pressed down to be close to the upper surface of the second mounting frame 114. In the embodiment of the utility model, the first pressing assembly is used to flatten and clamp the head of the material strip of the newly replaced material roll. The second pressing assembly also includes a second pressing cylinder 174 and a second pressing member 173. The number of the second pressing cylinders 174 is two. The second pressing member 173 is a pressing plate extending along the first direction. The two second pressing cylinders 174 are respectively fixedly connected to the bottom of the two ends of the second pressing member 173. The difference is that the second pressing cylinder 174 is arranged on the upper surface of the second mounting frame 114 and the second pressing assembly is used to flatten and clamp the tail of the material strip of the previous material roll. In the embodiment of the utility model, the height of the second pressing member 173 is higher than that of the first pressing member 171. Such a design is to facilitate the arrangement of the hot melt component 175 below the second pressing member 173. In addition, since the material strip needs to first pass through the second guide roller 116 behind the second mounting frame 114 and then pass through the first guide roller 115 in front of the second mounting frame 114, such a design can also form a height difference to avoid interference. The hot melt component 175 is an existing conventional induction heating component or resistance wire heating component or thermocouple, which is arranged below the second pressing member 173 of the second pressing assembly and fixed on the upper surface of the second mounting frame 114, and is used to heat and fuse the head end of the newly replaced material strip with the tail end of the previous material strip.

[0062] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A tension adjustment mechanism, characterized in that: include: The first mounting frame includes two mounting plates that are opposite to each other and spaced apart, and the two ends of the air expansion shaft of the large material roll are rotatably connected to the two mounting plates respectively; A swing shaft, which is arranged in parallel with the gas expansion shaft and spaced apart, and whose two ends are respectively connected to the two mounting plates; A tensioning shaft, whose axis is parallel to the swing shaft and whose two ends are respectively connected to the two ends of the swing shaft through a connecting frame to form a quadrilateral swinging structure, and the tensioning shaft is suitable for pressing against the material belt unwound from the large material roll; Two sensing grooves are provided on one end of the swing shaft and are recessed inwardly along the radial direction of the swing shaft, and the two sensing grooves are arranged at an angle; Two induction switches are arranged at the bottom of the two induction grooves in a one-to-one correspondence and both of the induction switches are connected to a driver circuit for driving the air expansion shaft to rotate; When any of the sensing switches is directly facing the corresponding sensing groove, the circuit between the sensing switch and the driver is connected or disconnected.

2. The tension adjustment mechanism according to claim 1, characterized in that: Two induction limit groove wheels are sleeved on the same end of the swing shaft, and one induction groove is formed on any one of the induction limit groove wheels.

3. The tension adjustment mechanism according to claim 2, characterized in that: It also includes a limiting assembly arranged on the first mounting frame and the connecting frame to prevent the tensioning shaft from falling and pressing on the large material roll due to its own gravity when there is no material roll; the limiting assembly includes: At least one supporting wheel is rotatably mounted on an inner side of one of the mounting plates facing the other mounting plate and is located below the swing shaft. At least one limiting member has one end fixed to the connecting frame on the side where the supporting wheel is located and the other end slidably abuts against the supporting wheel.

4. The tension adjustment mechanism according to claim 3, characterized in that: The number of the supporting wheels and the limiting members are both two and they are arranged in one-to-one correspondence; The two support wheels are respectively arranged on the inner side surfaces of the two mounting plates facing each other and are opposite to each other. One end of any one of the limit members is fixedly connected to one of the connecting frames, and the other end is slidably abutted against the support wheel on the corresponding side.

5. A photovoltaic module end strip cutting and laying machine, comprising a frame, a conveying mechanism and a loading mechanism, wherein the conveying mechanism passes through a set of opposite sides of the frame in a first direction and is used to convey the photovoltaic module into the frame for laying the end strips and convey the photovoltaic module out of the frame after the laying operation is completed, and the loading mechanism is rotatably arranged on one side of the frame around an axis parallel to a horizontal plane and is used to load a large roll of material having a width corresponding to the length of the end strip of the photovoltaic module, characterized in that: The feeding mechanism comprises the tensioning adjustment mechanism according to any one of claims 1 to 4, and the direction of the material roll unwinding by the feeding mechanism is along a second direction perpendicular to the first direction in a horizontal plane.

6. The photovoltaic module end strip cutting and laying machine according to claim 5, characterized in that: It also includes a punching mechanism, a cutting mechanism, a temporary storage unit and a conveying unit which are sequentially arranged behind the feeding mechanism along the material roll discharging direction.

7. The photovoltaic module end strip cutting and laying machine according to claim 6, characterized in that: The cutting mechanism comprises: A frame body, which is disposed on the frame and extends along the first direction; A driving member, which is arranged on the frame; A linear guide rail, which is disposed on the frame and extends along the first direction; A slider, which is slidably disposed on the linear guide rail and connected to the driving end of the driving member; a cutting knife assembly, which is arranged on the slider and comprises a first knife holder mounted on the slider and at least one cutting knife mounted on the first knife holder, wherein any one of the cutting knives partially protrudes upward from the outer side of the first knife holder along the third direction, and when there are two cutting knives, the two cutting knives are placed in an eight-shaped shape; and The pressing block component is arranged above the frame.

8. The photovoltaic module end strip cutting and laying machine according to claim 6, characterized in that: The temporary storage unit includes a plate-shaped carrier with a long side extending along the first direction, at least three rows of baffles are arranged on the carrier along the second direction at intervals, and a placement space for temporarily storing a material strip is defined between any two adjacent rows of baffles. A row of position sensors arranged along the extension direction of the carrier is provided at one end of any of the placement spaces, or at least one groove opened along the extension direction of the carrier is opened on any of the placement spaces on the carrier, and a row of position sensors arranged along the extension direction is provided in the groove at one end, and the position sensor is electrically connected to the transport unit.

9. The photovoltaic module end strip cutting and laying machine according to claim 6, characterized in that: The transport unit comprises a three-axis moving module and a suction cup arranged at the bottom of the three-axis moving module for grabbing and laying the material strips.

10. The photovoltaic module end strip cutting and laying machine according to any one of claims 6 to 9, characterized in that: It also includes a material strip docking mechanism, which is arranged on a second mounting frame above the feeding mechanism and includes: A first pressing assembly, which is disposed on the second mounting frame and includes a first pressing cylinder disposed at the bottom end of the upper surface of the second mounting frame and a first pressing member connected to the driving end of the first pressing cylinder; A second pressing assembly, which is disposed on the second mounting frame and includes a second pressing cylinder disposed on the upper surface of the second mounting frame and a second pressing member connected to the driving end of the second pressing cylinder; A hot-melt component is disposed below the second pressing member and fixed on the upper surface of the second mounting frame.

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