Bolt fastening device for photovoltaic junction box

Abstract

The utility model discloses a photovoltaic junction box bolt fastening device which comprises a photovoltaic junction box arranged on a workbench through a positioning die, copper bars are arranged on the two sides of the photovoltaic junction box respectively, and lead penetrating holes are formed between the side ends of the photovoltaic junction box and the copper bars. Supports are vertically arranged on the portions, on the two sides of the positioning die, of the workbench respectively, a cross beam is arranged on the supports, a fixing block is arranged in the middle of the lower portion of the cross beam, lead screws are arranged between the two ends of the fixing block and the supports respectively, and a punching mechanism, a glue dripping mechanism and a screw turning mechanism are sequentially arranged on the lead screws from inside to outside through sliding blocks. Transverse moving motors are arranged on the outer sides of the top ends of the supports on the two sides respectively, a control box is arranged at the side ends of the supports, control buttons are arranged on the control box, and a PLC is arranged in the control box. The junction box has higher reliability, is convenient for inspection and repair of a production line, can fundamentally solve the problem of pseudo soldering of the junction box, and greatly saves production cost and after-sales cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic module production technical field more particularly relates to a kind of photovoltaic junction box bolt fastening device. BACKGROUND

[0002] To cope with the increasingly serious environmental pollution problem caused by the use of traditional energy, green renewable energy industry has been rapidly developed in recent years, and solar cell power generation technology using photovoltaic effect is one of important green energy technologies, at present, photovoltaic power generation unit is widely used in various photovoltaic power generation systems as the most basic power generation unit by the photovoltaic module composed of multiple cell pieces through series-parallel connection combination, and photovoltaic junction box is the necessary component for connecting photovoltaic cell panel, battery and load in photovoltaic power generation system.

[0003] Therefore, in the photovoltaic module manufacturing link, junction box welding is a key step, and the current junction box welding method mainly has two kinds, one is tin stacking welding, according to market feedback, its reliability cannot meet the requirements, and frequent false welding occurs, which leads to junction box heating, short circuit and other faults, and the module cannot work normally, and in serious cases, it will burn the junction box and cause fire, causing irreparable loss and increasing after-sales cost, and the other way is laser welding, compared with tin stacking welding method, although the reliability is improved, but in the production process, secondary repair cannot be carried out, when the problem occurs in the junction box, the bus bar needs to be cut off and then connected by soldering, which increases the repair difficulty, and the reliability is also seriously reduced. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a photovoltaic junction box bolt fastening device, to improve the reliability of welding and reduce production cost and after-sales cost.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows.

[0006] The utility model provides a photovoltaic junction box bolt fastening device, including photovoltaic junction box through the positioning mould setting on the workbench, the both sides of photovoltaic junction box are provided with copper bar respectively, and the side end of photovoltaic junction box is provided with the lead wire perforation for passing through the confluence area between copper bar, the workbench of positioning mould two sides is vertically provided with support respectively, and the support is provided with crossbeam, and the middle part below crossbeam is provided with fixed block, and the both ends of fixed block are provided with lead screw between support respectively, and the lead screw is sequentially provided with the punching mechanism for drilling the glue dropping hole to copper bar, the glue dropping mechanism to glue dropping hole, the screwing mechanism to spin brass screw into glue dropping hole by inside to outside through slide block, and the both sides of support top are provided with the horizontal movement motor of synchronous rotation for driving the rotation of corresponding side lead screw, and the side end of support is provided with control box, and control box is provided with control button, and the inside of control box is provided with PLC controller, and the output of control button is connected with the input of PLC controller, and the output of PLC controller is connected with the input of punching mechanism, glue dropping mechanism, screwing mechanism and horizontal movement motor respectively.

[0007] Further optimize technical scheme, the punching mechanism includes the drilling cylinder setting in the bottom of slide block, the end of drilling cylinder telescopic rod is provided with drilling motor, the motor shaft of drilling motor is provided with drill for drilling glue dropping hole to copper bar, and the input of drilling cylinder and drilling motor is connected with the output of PLC controller.

[0008] Further optimize technical scheme, the glue dropping mechanism includes the glue dropping cylinder setting in the bottom of slide block, the end of glue dropping cylinder telescopic rod is provided with glue dropping pump, one end of glue dropping pump is connected with glue bucket for containing guiding glue through glue pipe, the other end of glue dropping pump is provided with glue dropping pipe for dropping glue into glue dropping hole, and the input of glue dropping cylinder and glue dropping pump is connected with the output of PLC controller.

[0009] Further optimize technical scheme, the screwing mechanism includes the tightening cylinder setting in the bottom of slide block, the end of tightening cylinder telescopic rod is provided with tightening motor, the motor shaft of tightening motor is provided with tightening screw rod for spinning brass screw into glue dropping hole, and the input of tightening cylinder and tightening motor is connected with the output of PLC controller.

[0010] Further optimize technical scheme, the positioning mould is provided with stepped positioning groove for placing photovoltaic junction box.

[0011] Further optimize technical scheme, the support and fixed block are provided with guide rod parallel with lead screw and passing through slide block for guiding the moving position of slide block.

[0012] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model is as follows.

[0013] The photovoltaic junction box bolt fastening device is used for placing the bus bar on the copper bar through the lead hole, and sequentially punching, dropping glue and screwing in brass screws on the copper bar and the bus bar, so that reliable connection of the copper bar and the bus bar is realized, the connection mode has higher reliability, simultaneously facilitates production line inspection and repair, can fundamentally solve the junction box virtual welding problem, and greatly saves production cost and after-sales cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a structural schematic view of the junction box.

[0016] Wherein: 1. workbench, 11. positioning die, 12. positioning groove, 2. photovoltaic junction box, 21. copper bar, 22. glue dropping hole, 23. lead hole, 3. support, 31. crossbeam, 32. fixed block, 33. screw rod, 34. guide rod, 35. transverse motor, 4. sliding block, 51. drilling cylinder, 52. drilling motor, 53. drill bit, 61. glue dropping cylinder, 62. glue dropping pump, 63. glue dropping pipe, 71. tightening cylinder, 72. tightening motor, 73. tightening screw rod, 8. control box, 9. bus bar, 10. brass screw. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with drawings and specific embodiments.

[0018] The photovoltaic junction box bolt fastening device, in combination with Figs. 1-2 As shown in the figure, it comprises workbench 1, and the workbench 1 is provided with positioning die 11 for fixing photovoltaic junction box 2; the two sides of the photovoltaic junction box 2 are respectively provided with copper bar 21; lead hole 23 is arranged between the side end of the photovoltaic junction box 2 and the copper bar 21 for passing through bus bar 9.

[0019] The positioning die 11 is provided with stepped positioning groove 12 for placing photovoltaic junction box 2; the photovoltaic junction box and the copper bar are respectively placed in the stepped positioning groove, and displacement does not occur when the copper bar is fastened, thereby improving the bolt fastening effect of the photovoltaic junction box.

[0020] The workbench 1 on both sides of the positioning mold 11 is vertically provided with a support 3, the support 3 is provided with a cross beam 31, the middle of the cross beam is provided with a fixed block 32, the both ends of the fixed block 32 are provided with a lead screw 33 between the support 3, the lead screw 33 is sequentially provided with a punching mechanism, a glue dropping mechanism and a screwing mechanism from inside to outside through the sliding block 4, and is respectively used for drilling a glue dropping hole 22 on the copper bar 21, dropping glue into the glue dropping hole 22 and screwing a brass screw 10 into the glue dropping hole 22 to realize the connection between the bus bar 9 and the copper bar 21, the outer side of the top of the two supports 3 is respectively provided with a transverse moving motor 35, the two transverse moving motors are synchronously rotated to drive the corresponding lead screw 33 to rotate, the side end of the support 3 is provided with a control box 8, the control box is provided with a control button, the inside of the control box is provided with a PLC controller, the output end of the control button is connected with the input end of the PLC controller, and the output end of the PLC controller is connected with the input end of the punching mechanism, the glue dropping mechanism, the screwing mechanism and the transverse moving motor.

[0021] The support 3 and the fixed block 32 are provided with a guide rod 34, the guide rod is parallelly arranged with the lead screw 33, the guide rod passes through the sliding block 4 to guide the moving position of the sliding block, and the sliding block is guaranteed to move horizontally along the guide rod when the lead screw rotates.

[0022] The punching mechanism comprises a drilling cylinder 51 arranged at the bottom of the sliding block 4, the end of the drilling cylinder telescopic rod is provided with a drilling motor 52, the motor shaft of the drilling motor 52 is provided with a drill bit 53, the drill bit is used for drilling a glue dropping hole 22 on the copper bar and the bus bar placed on the copper bar, the diameter of the glue dropping hole is smaller than the diameter of the brass screw to guarantee the fastening effect, and the input end of the drilling cylinder and the drilling motor is connected with the output end of the PLC controller. When drilling, the transverse moving motors on both sides drive the lead screw to rotate at the same time, the drill bit is moved above the drilling position, after being moved to the position, the drilling cylinder is lowered, the drilling motor drives the drill bit to rotate when the drilling cylinder contacts the copper bar, the drilling cylinder pushes the drill bit to move downward in the process of drilling the copper bar, and the drilling operation of the copper bar and the bus bar is realized.

[0023] The glue dropping operation is carried out through the glue dropping mechanism after the drilling is completed, the glue dropping mechanism comprises a glue dropping cylinder 61 arranged at the bottom of the sliding block 4, the end of the glue dropping cylinder telescopic rod is provided with a glue dropping pump 62, one end of the glue dropping pump 62 is connected with a glue bucket containing guide glue through a glue pipe, the other end of the glue dropping pump is provided with a glue dropping pipe 63, the glue dropping pipe is used for dropping glue into the glue dropping hole, and the input end of the glue dropping cylinder and the glue dropping pump is connected with the output end of the PLC controller. After the copper bar and the bus bar are drilled, the lead screw is driven to rotate by the transverse moving motors on both sides of the support, the glue dropping mechanisms on both sides are driven to move above the glue dropping hole, after being moved to the position, the glue dropping cylinder pushes the glue dropping pipe to move downward, the glue dropping pipe is inserted into the glue dropping hole, at this time, the glue dropping pump is started, the guide glue in the glue bucket is sent into the glue dropping pipe, the guide glue is dropped into the glue dropping hole through the glue dropping pipe, and the reliable connection of the materials to be adhered is realized.

[0024] After the glue dropping is completed, the brass screw is screwed into the glue dropping hole through the screwing mechanism, the screwing mechanism comprises a screwing cylinder 71 arranged at the bottom of the sliding block 4, an end of an extension rod of the screwing cylinder is provided with a screwing motor 72, a screwing screw rod 73 is arranged on a motor shaft of the screwing motor and is used for screwing the brass screw into the glue dropping hole, and input ends of the screwing cylinder and the screwing motor are connected with output ends of a PLC controller. After the glue dropping is completed, the traverse motor drives the screw rod to rotate, moves the screwing mechanisms on both sides to the upper side of the glue dropping hole, puts the brass screw into the glue dropping hole, the screwing cylinder pushes the screwing screw rod to move downward to the upper side of the brass screw, when the screwing screw rod contacts the brass screw, the screwing motor drives the screwing screw rod to rotate, and under the joint action of the screwing cylinder and the screwing motor, the brass screw is screwed into the glue dropping hole, so that the busbar and the copper bar are tightly connected.

[0025] The utility model discloses when connecting photovoltaic junction box, the busbar is taken out from the lead hole of the both sides of photovoltaic junction box, then the photovoltaic junction box is placed in the positioning recess of positioning mould, the traverse motor of support both sides synchronous action makes the punching mechanism move to the upper side of the punching position, the punching mechanism of photovoltaic junction box both sides synchronous action, punch the copper bar and the busbar on the copper bar, after punching, the traverse motor drives the glue dropping mechanism to move to the upper side of the glue dropping hole, and the glue dropping mechanism is glued to the glue dropping hole, after the glue dropping is completed, the traverse motor drives the screwing mechanism to move to the upper side of the glue dropping hole, and the brass screw is put into the glue dropping hole, and the brass screw is screwed into the glue dropping hole through the screwing mechanism, so that the copper bar and the busbar are reliably connected.

Claims

1. A photovoltaic junction box bolt fastening device, characterized in that: The system includes a photovoltaic junction box (2) mounted on a workbench (1) via a positioning mold (11). Copper busbars (21) are mounted on both sides of the photovoltaic junction box (2). A lead wire through hole (23) for passing through the busbar (9) is provided between the side end of the photovoltaic junction box (2) and the copper busbar (21). Supports (3) are vertically mounted on the workbench (1) on both sides of the positioning mold (11). A crossbeam (31) is mounted on the support (3). A fixing block (32) is mounted in the middle below the crossbeam (31). Lead screws (33) are mounted between the two ends of the fixing block (32) and the support (3). A slider (4) passes through the lead screw (33) from the inside to the outside. The system is equipped with a drilling mechanism, a dispensing mechanism, and a screw-tightening mechanism for drilling dispensing holes (22) into copper busbars (21), dispensing adhesive into the dispensing holes (22), and screwing brass screws (10) into the dispensing holes. The outer sides of the top of the two side brackets (3) are equipped with synchronously rotating transverse motors (35) for driving the corresponding side lead screws (33) to rotate. The side end of the bracket (3) is equipped with a control box (8), which is equipped with control buttons. The control box is equipped with a PLC controller. The output end of the control button is connected to the input end of the PLC controller. The output end of the PLC controller is connected to the input end of the drilling mechanism, the dispensing mechanism, the screw-tightening mechanism, and the transverse motor, respectively.

2. The photovoltaic junction box bolt fastening device according to claim 1, characterized in that: The drilling mechanism includes a drilling cylinder (51) located at the bottom of the slider (4), a drilling motor (52) located at the end of the extension rod of the drilling cylinder, and a drill bit (53) for drilling glue holes (22) on the motor shaft of the drilling motor. The input ends of the drilling cylinder and the drilling motor are respectively connected to the output end of the PLC controller.

3. The photovoltaic junction box bolt fastening device according to claim 1, characterized in that: The dispensing mechanism includes a dispensing cylinder (61) located at the bottom of the slider (4). A dispensing pump (62) is provided at the end of the telescopic rod of the dispensing cylinder. One end of the dispensing pump is connected to a glue bucket for holding the guide glue through a glue tube. The other end of the dispensing pump is provided with a dispensing tube (63) for dispensing glue into the dispensing hole (22). The input ends of the dispensing cylinder and the dispensing pump are respectively connected to the output end of the PLC controller.

4. The photovoltaic junction box bolt fastening device according to claim 1, characterized in that: The screw tightening mechanism includes a tightening cylinder (71) located at the bottom of the slider (4), a tightening motor (72) located at the end of the telescopic rod of the tightening cylinder, and a tightening screw (73) located on the motor shaft of the tightening motor for screwing the brass screw (10) into the drip hole (22). The input ends of the tightening cylinder and the tightening motor are respectively connected to the output end of the PLC controller.

5. The photovoltaic junction box bolt fastening device according to claim 1, characterized in that: The positioning mold (11) has a stepped positioning groove (12) for placing the photovoltaic junction box (2).

6. The photovoltaic junction box bolt fastening device according to claim 1, characterized in that: A guide rod (34) is provided between the bracket (3) and the fixing block (32), which is parallel to the lead screw (33) and passes through the slider (4) to guide the slider's movement position.

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