Automatic installation equipment for sealing ring of photovoltaic box inspection cover

Abstract

The present invention relates to the field of rubber ring assembly technology, and specifically to an automatic sealing ring embedding device for a photovoltaic box inspection cover, comprising a multifunctional embedding claw for picking up and embedding the sealing ring, the multifunctional embedding claw comprising a pressure plate, a positioning plate, four positioning wheels and a retracting and releasing mechanism, both the pressure plate and the positioning plate are provided with limited sliding holes, the retracting and releasing mechanism comprises a central screw, a traction hinge sleeve, a limiting stand, four sets of parallel connecting rod stabilizing arms and a motor, the positioning wheel comprises a truncated cone wheel, a central axis, a linear bearing, a spring and an anti-slip nut, the present invention matches the rounded rectangular sealing ring through the double-layer bracket structure composed of the pressure plate and the positioning plate, and cooperates with the outward expansion of the four positioning wheels, and cooperates with the lifting of the carrier, so that the pressing process of the sealing ring and the inspection cover is synchronously completed through the pressure plate in the process of upward compressing the positioning wheel, without the need for manual intervention throughout the whole process, thereby realizing the automation of the sealing ring embedding process.

Description

Technical Field

[0001] The invention relates to the technical field of rubber ring assembly, and in particular to automatic embedding equipment for a sealing ring of a photovoltaic box inspection cover. Background Art

[0002] When designing an outdoor photovoltaic box, a small open window cover, also known as an inspection cover, must be reserved for regular maintenance. Since the applicable scenario corresponds to the outdoors, it will be equipped with a sealing ring. The photovoltaic box produced by the applicant is a die-cast aluminum product, which is more reliable than the traditional iron box. With the current increasing labor costs and the large output of the products involved by the applicant, the pressure of labor costs has been magnified several times. The applicant previously had a semi-automatic assembly line, that is, each part is sent to each process one by one along the conveyor line. Each process requires multiple workers to manually equip it, and the efficiency has not kept up with the production demand. In addition, since the sealing ring is not made of hard material, it is difficult to realize automatic assembly. However, due to the sharp increase in labor costs and the unsatisfactory yield rate caused by negligence in manual assembly, the applicant urgently needs to optimize the existing assembly line equipment. Summary of the invention

[0003] Based on this, it is necessary to provide an automatic installation device for the sealing ring of the photovoltaic box inspection cover to address the existing technical problems.

[0004] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0005] An automatic embedding device for a sealing ring of a photovoltaic box inspection cover comprises a conveyor belt and a 90° turning mechanism arranged on one side of the conveyor belt, and further comprises a plurality of positioning carriers spaced apart on the conveyor belt and a lifting mechanism located in the middle of the conveyor belt, wherein the lifting mechanism is arranged relative to the 90° turning mechanism, and the lifting mechanism is used to lift the positioning carrier upwards, and a multifunctional embedding claw for picking up and embedding the sealing ring is connected to the end of the movable arm of the 90° turning mechanism;

[0006] The conveyor belt is provided with a plurality of baffles which are evenly spaced and used to drive the positioning vehicle forward;

[0007] The multifunctional embedding claw comprises a pressing plate, a positioning plate which is parallel and fixed above the pressing plate at intervals, four positioning wheels for pressing against the sealing ring from the inside to the outside, and a retracting mechanism for driving the four positioning wheels to expand or retract synchronously;

[0008] The pressing plate and the positioning plate are each provided with four limiting sliding holes for limiting the sliding track of the corresponding positioning wheel, and the limiting sliding holes on the pressing plate and the positioning plate are arranged one by one;

[0009] The retractable mechanism includes a central screw rotatably connected to the center of the pressing plate, a traction hinge sleeve threadedly connected to the outside of the central screw, a limit stand for limiting the rotation of the traction hinge sleeve, four sets of parallel connecting rod stabilizing arms, and a motor arranged at the top of the limit stand for driving the central screw to rotate, one end of each set of parallel connecting rod stabilizing arms is hinged to the upper half of the corresponding positioning wheel, and the other end is hinged to the outer side of the traction hinge sleeve;

[0010] The positioning wheel comprises a truncated cone wheel, a central shaft coaxially connected to the truncated cone wheel at the lower end, a linear bearing movably sleeved on the upper half of the central shaft, a spring for driving the truncated cone wheel downward, and an anti-drop nut arranged at the top end of the central shaft;

[0011] The slope of the outer contour of the truncated cone-shaped wheel is consistent with the slope of the inner wall of the sealing ring.

[0012] Preferably, an I-shaped pulley is arranged above the truncated cone wheel, the spring is located between the I-shaped pulley and the linear bearing, the upper and lower ends of the I-shaped pulley are embedded with ball bearings for being sleeved on the central axis, the I-shaped pulley is slidably arranged in a limiting sliding hole on the pressure plate, and a first upward shallow groove is formed on the bottom surface of each of the limiting sliding holes, the groove width of the first shallow groove is larger than the groove width of the limiting sliding hole and smaller than the wheel diameter of the truncated cone wheel, and the lower edge of the I-shaped pulley will contact the top wall of the first shallow groove during the upward process.

[0013] Preferably, the parallel-link stabilizing arm comprises two straight-link rods of equal length and arranged in parallel, the same ends of the two straight-link rods are connected by a U-shaped connecting piece, the U-shaped connecting piece is provided with two connecting pins which are horizontal and spaced apart up and down, the end of each straight-link rod is axially connected to the two ends of the corresponding connecting pin, the two U-shaped connecting pieces are arranged in a vertical state, the two ends of one of the U-shaped connecting pieces are sleeved on the corresponding central axis, and the linear bearing on the central axis is located on the inner side of the U-shaped connecting piece, the other U-shaped connecting piece is axially connected to a connecting seat fixedly arranged on the traction hinge sleeve, and the rotating pivot of the U-shaped connecting piece and the connecting seat is parallel to the center screw, the number of the connecting seats is four, and the four connecting seats are respectively connected to four corresponding U-shaped connecting pieces in a one-to-one correspondence.

[0014] Preferably, four embedding grooves for accommodating the connecting seat are arranged on the outer wall of the traction hinge sleeve, and the upper and lower ends of the traction hinge sleeve are respectively sleeved with first limiting rings for fastening the end of the connecting seat in the embedding grooves.

[0015] Preferably, the outer wall of the traction hinge sleeve is formed with four raised portions which are spaced apart along the circumferential direction and protrude outward, each of the raised portions is provided with a limit groove which extends in the same direction as the axial direction of the traction hinge sleeve, the limit stand is composed of a fixed chassis and four limit strips which are equally spaced apart along the circumferential direction, the four limit strips are slidably embedded in the corresponding limit grooves one by one, the fixed chassis is fixedly connected to the center of the positioning plate, the lower ends of the four limit strips are fixedly connected to the edges of the central through hole of the fixed chassis, a second limit ring which tightens the limit strip from the inside to the outside is embedded on the inner sides of the upper ends of the four limit strips, an inverted V-shaped frame is fixedly provided on the top of the positioning plate, the motor is fixedly provided on the top of the V-shaped frame and the output shaft of the motor is fixedly connected to the upper end of the center screw, and a central through hole is provided on the top of the V-shaped frame for limiting the outer walls of the four limit strips.

[0016] Preferably, a boss gasket is provided on the top of the I-type pulley and is sleeved on the central axis for downwardly contacting the inner ring of the corresponding ball bearing, wherein an L-shaped limit ring is provided at the bottom of a U-shaped connecting piece sleeved on the central axis, and the L-shaped limit ring is slidably set in the limit sliding hole on the positioning plate, and the upper surface of the limit sliding hole is provided with a second shallow groove pointing downward, and the upper edge of the L-shaped limit ring is slidably embedded in the second shallow groove, and the upper and lower ends of the spring respectively resist the U-shaped connecting piece and the boss gasket, and the upper end of the spring extends into the inner side of the L-shaped limit ring.

[0017] Preferably, an adapter sleeve is provided on the outer side of the central shaft, the outer wall of the adapter sleeve is in sliding contact with the inner side of the linear bearing, the upper end of the central shaft is provided with a threaded column, the anti-slip nut is screwed on the threaded column, and the top of the anti-slip nut is provided with a copper column nut which is screwed on the threaded column and presses downward against the anti-slip nut.

[0018] Preferably, a positioning pin corresponding to the screw hole on the inspection cover body and a plug that is laterally inserted into the shaft hole on the inspection cover body are provided on the top of the positioning carrier, and a first shaft seat is also provided on the top of the positioning carrier, and a guide rod is formed at one end of the plug that is slidably connected to the first shaft seat, and a thickened limiting portion is provided in the middle of the plug, and a handle is vertically screwed on the limiting portion.

[0019] Preferably, the lifting mechanism includes a U-shaped base, a thin cylinder fixedly arranged on one side of the U-shaped base, a slide slidably arranged on the inner side of the U-shaped base, a roller axially connected to the top of the slide, a platform movably arranged above the U-shaped base and a limiter fixedly arranged on the other side of the U-shaped base, a plurality of second shaft seats are arranged on the inner walls on both sides of the U-shaped base, a plurality of guide shafts slidably matched with the corresponding second shaft seats are fixedly connected to the bottom of the platform, and a guide block contacting with the roller is arranged at the bottom of the platform.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Firstly, the present invention matches the rounded rectangular sealing ring by expanding four positioning wheels outwards, so as to realize the automatic material taking process of the sealing ring;

[0022] Secondly, the present invention realizes the automation of the sealing ring embedding process by lifting the carrier and compressing the positioning wheel upwards through the pressing plate to synchronously complete the press-fitting process of the sealing ring and the inspection cover, without manual intervention in the whole process;

[0023] Thirdly, the multifunctional embedding claw of the present invention has multiple degrees of freedom of movement and has better adaptability to the existing feeding mechanism;

[0024] Fourthly, the present invention uses a specially designed multifunctional embedded claw structure to ensure that the positioning wheel is always in a plane perpendicular to the pressure plate during operation, thereby ensuring that the sealing ring can be stably attached to the bottom surface of the pressure plate and move.

[0025] Fifthly, the double-layer support structure composed of the pressing plate and the positioning plate of the present invention effectively ensures the displacement space for the positioning wheel to evacuate the sealing ring upward, thereby improving the assembly success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a three-dimensional schematic diagram of the local structure of the present invention;

[0028] Figure 3 yes Figure 2 A front view of

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the multifunctional embedded claw and the inspection cover of the present invention;

[0030] Figure 5 yes Figure 4 A top view of

[0031] Figure 6 yes Figure 5 The plane section view along the AA line;

[0032] Figure 7 yes Figure 5 The plane section view along line BB;

[0033] Figure 8 yes Figure 7 A magnified schematic diagram of the local structure in FIG.

[0034] Fig. 9 It is a three-dimensional structural schematic diagram of the multifunctional embedded claw of the present invention;

[0035] Fig.10 It is a schematic diagram of the three-dimensional structure decomposition of the multifunctional embedded claw of the present invention;

[0036] Fig.11 It is a partial structural exploded perspective view of the multifunctional embedded claw of the present invention;

[0037] Fig.12 The present invention Fig.11 The enlarged schematic diagram of point C in FIG.

[0038] Fig.13 It is a three-dimensional structural schematic diagram of the positioning carrier and the lifting mechanism of the present invention;

[0039] Fig.14 It is a schematic diagram of the material taking process of the multifunctional embedded claw of the present invention;

[0040] Fig.15 yes Fig.14 The plane section view along the DD line;

[0041] Fig.16 yes Fig.15 A magnified schematic diagram of the local structure in FIG.

[0042] The numbers in the figure are: 1-inspection cover; 2-sealing ring; 3-feeding device; 4-slot; 5-hanging rod; 6-conveyor belt; 7-90° flip mechanism; 8-positioning carrier; 9-lifting mechanism; 10-multi-function embedded claw; 11-baffle; 12-pressing plate; 13-positioning plate; 14-positioning wheel; 15-limiting sliding hole; 16-center screw; 17-limiting stand; 18-parallel connecting rod stabilizing arm; 19-motor; 20-truncated cone wheel; 21-center axis; 22-linear bearing; 23-spring; 24-anti-slip nut; 25-type pulley; 26-ball bearing; 27-first shallow groove; 28-straight connecting rod; 29-U-shaped connector; 30- Connecting seat; 31-embedded groove; 32-first limiting ring; 33-protruding part; 34-limiting groove; 35-fixed chassis; 36-limiting strip; 37-second limiting ring; 38-V-frame; 39-boss gasket; 40-L-type limiting ring; 41-second shallow groove; 42-adapting sleeve; 43-threaded column; 44-copper column nut; 45-locating pin; 46-latch pin; 47-first shaft seat; 48-guide rod; 49-limiting part; 50-handle; 51-U-type base; 52-thin cylinder; 53-slide; 54-roller; 55-platform; 56-limiter; 57-guide shaft; 58-guide block; 59-traction hinge sleeve; 60-connecting pin. DETAILED DESCRIPTION

[0043] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] See also Figures 1 to 16 As shown, an automatic embedding device for the sealing ring of a photovoltaic box inspection cover includes a conveyor belt 6 and a 90° turning mechanism 7 arranged on one side of the conveyor belt 6, and also includes a plurality of positioning carriers 8 spaced apart on the conveyor belt 6 and a lifting mechanism 9 located in the middle of the conveyor belt 6, wherein the lifting mechanism 9 is arranged relative to the 90° turning mechanism 7, and the lifting mechanism 9 is used to lift the positioning carrier 8 upwards, and a multifunctional embedding claw 10 for picking up and embedding the sealing ring 2 is connected to the end of the movable arm of the 90° turning mechanism 7;

[0045] The conveyor belt 6 is provided with a plurality of baffles 11 which are evenly spaced and used to drive the positioning carrier 8 forward;

[0046] The multifunctional embedding claw 10 includes a pressing plate 12, a positioning plate 13 fixed above the pressing plate 12 in parallel and at intervals, four positioning wheels 14 for pressing against the sealing ring 2 from the inside to the outside, and a retracting mechanism for driving the four positioning wheels 14 to expand or retract synchronously;

[0047] The pressing plate 12 and the positioning plate 13 are each provided with four limiting sliding holes 15 for limiting the sliding track of the corresponding positioning wheel 14, and the limiting sliding holes 15 on the pressing plate 12 and the positioning plate 13 are arranged one by one;

[0048] The retracting and releasing mechanism includes a central screw 16 rotatably connected to the center of the pressing plate 12, a traction hinge sleeve 59 threadedly connected to the outside of the central screw 16, a limit stand 17 for limiting the rotation of the traction hinge sleeve 59, four sets of parallel connecting rod stabilizing arms 18, and a motor 19 arranged on the top of the limit stand 17 and used to drive the central screw 16 to rotate, one end of each set of parallel connecting rod stabilizing arms 18 is hinged to the upper half of the corresponding positioning wheel 14, and the other end is hinged to the outer side of the traction hinge sleeve 59;

[0049] The positioning wheel 14 includes a truncated cone wheel 20, a central shaft 21 coaxially connected to the truncated cone wheel 20 at the lower end, a linear bearing 22 movably sleeved on the upper half of the central shaft 21, a spring 23 for driving the truncated cone wheel 20 downward, and an anti-drop nut 24 arranged at the top of the central shaft 21;

[0050] The slope of the outer contour of the truncated cone wheel 20 is consistent with the slope of the inner wall of the sealing ring 2 .

[0051] Working principle: The conveyor belt 6 carries the positioning carrier 8 loaded with the inspection cover 1 forward through the baffle 11 to the 90° turning mechanism 7 and stops. The 90° turning mechanism 7 turns its movable arm to a horizontal state to pick up the sealing ring 2 (the sealing ring 2 is stored through the feeding device 3, which belongs to the general prior art and is not fully shown in the figure, see Fig.15), the 90° flip mechanism 7 picks up the sealing ring 2 through the multifunctional embedding claw 10 at its end, and then the 90° flip mechanism 7 turns its movable arm to a vertical downward state so that the lifting mechanism 9 can cooperate with the multifunctional embedding claw 10 to install it into the slot 4 on the inspection cover 1.

[0052] The sealing ring 2 is clamped in a horizontal state by four positioning wheels 14 and fits the bottom of the pressure plate 12. As the lifting mechanism 9 works, the positioning carrier 8 above it is driven to rise, and the positioning carrier 8 drives the inspection cover 1 thereon to rise. Figure 8 During this process, the inner edge of the top surface of the inspection cover 1 presses upward against the bottom of the truncated cone wheel 20, so that the truncated cone wheel 20 and the central shaft 21 overcome the pressure of the spring 23 and rise together. Since the pressure plate 12 and the positioning plate 13 remain in place, the truncated cone wheel 20 is pushed up while the inspection cover 1 is lifted, so that the truncated cone wheel 20 is upwardly separated from the sealing ring 2. The sealing ring 2 separated from the truncated cone wheel 20 is blocked by the upper pressure plate 12 and is downwardly embedded in the groove 4 of the raised inspection cover 1, thereby completing the embedding process of the sealing ring 2 and the inspection cover 1.

[0053] The multifunctional embedded claw 10 drives the central screw 16 to rotate through the motor 19, so that the traction hinge sleeve 59 moves up and down on the central screw 16, thereby driving the four sets of parallel connecting rod stabilizing arms 18 pivotally connected thereto, and pushing the distal positioning wheel 14 to slide along the limiting sliding holes 15 on the pressure plate 12 and the positioning plate 13, that is, the four positioning wheels 14 expand outward synchronously until the end of the limiting sliding holes 15, at this time, the outer wall of the limiting wheel is tightly attached to the inner wall of the sealing ring 2, because in the product design link, considering the convenience of installation of the sealing ring 2, the sealing ring 2 is designed to be an inverted trapezoidal shape with a wide upper and narrow lower cross-section, so the truncated cone wheel 20 can just be close to the inner wall of the sealing ring 2, and because the outer wall inclination of the truncated cone wheel 20 is consistent with the inclination of the sealing ring 2, it just plays a "hook" effect, cleverly attaching the sealing ring 2 to the bottom of the pressure plate 12, and preventing the sealing ring 2 from falling down.

[0054] In order to limit the up and down travel of the truncated cone wheel 20, so that the bottom surface of the truncated cone wheel 20 is not lower than the ground of the sealing ring 2 when it is at the lower limit position, and its bottom surface does not affect the downward embedding of the sealing ring 2 at the upper limit position, the following features are designed:

[0055] An I-shaped pulley 25 is arranged above the truncated cone wheel 20, and the spring 23 is located between the I-shaped pulley 25 and the linear bearing 22. The upper and lower ends of the I-shaped pulley 25 are embedded with ball bearings 26 for being sleeved on the central shaft 21. The I-shaped pulley 25 is slidably arranged in the limiting sliding hole 15 on the pressure plate 12, and a first upward shallow groove 27 is formed on the bottom surface of each of the limiting sliding holes 15. The groove width of the first shallow groove 27 is larger than the groove width of the limiting sliding hole 15 and smaller than the wheel diameter of the truncated cone wheel 20. The lower edge of the I-shaped pulley 25 will abut against the top wall of the first shallow groove 27 during the upward process.

[0056] When the multifunctional embedded claw 10 picks up the sealing ring 2, all the parallel connecting rod stabilizing arms 18 in the retracting and releasing mechanism drive the four positioning wheels 14 to expand synchronously. During this process, under the action of the spring 23, each truncated cone wheel 20 drives the central axis 21 fixed thereto to move downward to a state of protruding from the pressure plate 12. At this time, the upper edge of the I-shaped pulley 25 is downwardly fitted to the top surface of the pressure plate 12, thereby preventing the truncated cone wheel 20 from moving downward excessively. The linear bearing 22 is used to ensure smooth and unobstructed sliding of the central axis 21, and the ball bearing 26 is used to reduce the friction resistance of the I-shaped pulley 25 in the limiting sliding hole 15, thereby reducing wear.

[0057] When the lifting mechanism 9 drives the inspection cover 1 to move upward so that the sealing ring 2 is embedded in its groove 4, the top of the inspection cover 1 will press upward against the conical wheel 20, forcing the conical wheel 20 to compress the spring 23 upward and move upward until the lower edge of the I-type pulley 25 contacts the top wall of the first shallow groove 27. At this time, the conical wheel 20 is completely retracted into the pressure plate 12, so that the sealing ring 2 is completely embedded in the groove 4 of the inspection cover 1 to complete the assembly.

[0058] In order to ensure that the positioning wheel 14 always remains perpendicular to the pressure plate 12 and that the limiting sliding hole 15 is not limited to a straight line, the following features are provided:

[0059] The parallel-link stabilizing arm 18 includes two straight-link rods 28 of equal length and arranged in parallel. The same ends of the two straight-link rods 28 are connected by a U-shaped connector 29. The U-shaped connector 29 is provided with two connecting pins 60 in a horizontal state and spaced apart up and down. The ends of each straight-link rod 28 are axially connected to the two ends of the corresponding connecting pin 60. The two U-shaped connectors 29 are both arranged in a vertical state. The two ends of one of the U-shaped connectors 29 are both sleeved on the corresponding central axis 21, and the linear bearing 22 on the central axis 21 is located on the inner side of the U-shaped connector 29. The other U-shaped connector 29 is axially connected to a connecting seat 30 fixedly arranged on the traction hinge sleeve 59, and the rotation pivot of the U-shaped connector 29 and the connecting seat 30 is parallel to the central screw 16. The number of the connecting seats 30 is four, and the four connecting seats 30 are respectively connected to four corresponding U-shaped connectors 29 in a one-to-one correspondence.

[0060] The two parallel straight links 28 and the two vertically arranged U-shaped connectors 29 at both ends together form a four-link stabilizing arm structure. Since one of the U-shaped connectors 29 is vertically fixed on the traction hinge sleeve 59, the U-shaped connector at the other end for connecting the positioning wheel 14 must also remain in a vertical state. In this way, it is ensured that all positioning wheels 14 always remain in a state of being perpendicular to the pressure plate 12 during the translation process, thereby ensuring that the positioning wheel 14 will not cause the sealing ring 2 to detach from the multi-functional embedded claw 10 due to tilting.

[0061] Since the limiting slide hole 15 is not a single straight line, there may also be a folded line or arc-shaped limiting slide hole 15. The non-linear limiting slide hole 15 is used to avoid specific parts on the feeding device 3 (such as the hanging rod 5 for hanging the sealing ring 2). Therefore, a connecting seat 30 is added to the traction hinge sleeve 59 to be hinged with the U-shaped connecting piece 29, thereby increasing a rotational freedom perpendicular to the positioning plate 13 for the parallel connecting rod stabilizing arm 18 to perform adaptive rotation.

[0062] The outer wall of the traction hinge sleeve 59 is provided with four embedding grooves 31 for accommodating the connecting seat 30, and the upper and lower ends of the traction hinge sleeve 59 are respectively sleeved with first limiting rings 32 for fastening the ends of the connecting seat 30 in the embedding grooves 31. By providing the embedding grooves 31 for the connecting seat 30 to be inserted, and sleeved with the first limiting rings 32, the four connecting seats 30 are firmly clamped on the traction hinge sleeve 59, so as to conveniently complete the assembly of parts.

[0063] Since the hinge connection between the connection seat 30 and the U-shaped connection piece 29 increases a degree of freedom of movement, the rotation of the traction hinge sleeve 59 during the push and pull of the parallel link stabilizing arm 18 may cause the expansion or retraction of the four positioning wheels 14 to be asynchronous. Therefore, the following features are designed to limit the rotation of the traction hinge sleeve 59:

[0064] The outer wall of the traction hinge sleeve 59 is formed with four protrusions 33 spaced apart in the circumferential direction and protruding outward, each of the protrusions 33 is provided with a limiting groove 34 extending in the same direction as the axial direction of the traction hinge sleeve 59, the limiting stand 17 is composed of a fixed chassis 35 and four limiting strips 36 equally spaced apart in the circumferential direction, the four limiting strips 36 are slidably embedded in the corresponding limiting grooves 34 one by one, the fixed chassis 35 is fixedly connected to the center of the positioning plate 13, and the four limiting strips 36 are fixedly connected to the center of the positioning plate 13, and the four limiting strips 36 are fixedly connected to the center of the positioning plate 13. The lower ends of the four limit bars 36 are fixedly connected to the edge of the central through hole of the fixed chassis 35, and a second limit ring 37 is embedded in the inner side of the upper ends of the four limit bars 36 to tighten the limit bars 36 from the inside to the outside. An inverted V-shaped frame 38 is fixedly provided on the top of the positioning plate 13, and the motor 19 is fixedly provided on the top of the V-shaped frame 38 and the output shaft of the motor 19 is fixedly connected to the upper end of the central screw 16. A central through hole is opened on the top of the V-shaped frame 38 for limiting the outer wall of the four limit bars 36.

[0065] The fixed base plate is fixedly connected to the positioning plate 13, and the central through hole on the V-shaped frame 38 is used to fix the lower and upper ends of the four limit bars 36 respectively. A second limit ring 37 is embedded on the inner side of the upper ends of the four limit bars 36 to further fix the upper ends of the four limit bars 36. The limit grooves 34 on the outer wall of the traction hinge sleeve 59 correspond one by one to the sliding cooperation with the limit bars 36. Since the limit bars 36 are fixed, when the motor 19 drives the center screw 16 to rotate, the traction hinge sleeve 59 can only move along the axial direction of the center screw 16 without self-rotation, thereby ensuring the sliding synchronization of the four positioning wheels 14.

[0066] The top of the I-shaped pulley 25 is provided with a boss gasket 39 which is sleeved on the central shaft 21 and is used to contact the inner ring of the corresponding bearing downwards, so as to avoid pressing the inner and outer rings of the ball bearing 26 at the same time and causing the ball bearing 26 to work abnormally. The bottom of a U-shaped connector 29 sleeved on the central shaft 21 is provided with an L-shaped limit ring 40, which is slidably arranged in the limit sliding hole 15 on the positioning plate 13, and the upper surface of the limit sliding hole 15 is provided with a second shallow groove 41 downwards. The upper edge of the L-shaped limit ring 40 is slidably embedded in the second shallow groove 41, and the upper and lower ends of the spring 23 respectively abut against the U-shaped connecting piece 29 and the boss gasket 39, and the upper end of the spring 23 extends into the inner side of the L-shaped limit ring 40. The L-shaped limit ring 40 enables the middle part of the central axis 21 to slide stably along the limit sliding hole 15 on the positioning plate 13, and the L-shaped limit ring 40 holds the upper end of the spring 23, avoiding the spring 23 from directly contacting the hole wall of the limit sliding hole 15 and causing the spring 23 to get stuck.

[0067] More specifically, the pressure plate 12 and the positioning plate 13 together form a double-layer stable structure. The specific function is that if only the pressure plate 12 is set without the positioning plate 13, in the process of the parallel connecting rod stabilizing arm 18 driving the positioning wheel 14 to expand outward, since the upper edge of the I-shaped pulley 25 slides on the top surface of the pressure plate 12, it will be subjected to the downward pressure from the straight connecting rod 28 acting on the U-shaped connecting piece 29. This downward pressure will cause the compression of the spring 23, which will cause that when the traction hinge sleeve 59 moves down to its position, there is no space between the I-shaped pulley 25 and the U-shaped connecting piece 29 for the truncated cone wheel 20 to move upward, and this space is the key stroke for the truncated cone wheel 20 to retreat upward from the sealing ring 2, so This will cause the sealing ring 2 to be unable to be completely embedded in the inspection cover 1. Based on this, a positioning plate 13 and a pressure plate 12 are added to form a double-layer fixed structure. The positioning plate 13 is used to support the U-shaped connecting piece 29 within the entire range of movement of the positioning wheel 14. To ensure that the spring 23 between the I-shaped pulley 25 and the U-shaped connection 29 will not be compressed during the outward expansion of the positioning wheel 14, thereby ensuring that the I-shaped pulley 25 moves to the very end of the limiting slide hole 15. When the truncated cone-shaped wheel 20 is squeezed as the inspection cover 1 is lifted, the spring 23 still has enough compressed space for the truncated cone-shaped wheel 20 to move upward and then be able to completely escape from the sealing ring 2, thereby ensuring that the sealing ring 2 can be completely embedded in the inspection cover 1.

[0068] In order to solve the shaking problem caused by the central shaft 21 being too thin and to prevent the positioning wheel 14 from completely disengaging from the linear bearing 22 downward, the following features are provided:

[0069] An adapter sleeve 42 is sleeved on the outer side of the central shaft 21, and the outer wall of the adapter sleeve 42 is in sliding contact with the inner side of the linear bearing 22. A threaded column 43 is provided at the upper end of the central shaft 21, and the anti-slip nut 24 is screwed on the threaded column 43. A copper column nut 44 is screwed on the threaded column 43 and pressed downward against the anti-slip nut 24 at the top of the anti-slip nut 24.

[0070] The adapter sleeve 42 is used to thicken and consolidate the center shaft 21, and also ensures the smoothness of the cooperation with the linear bearing 22. On the other hand, the anti-slip nut 24 screwed on the top of the center shaft 21 is used to press the adapter sleeve 42 downward against the top of the boss gasket 39, and on the other hand, it is used to contact the top of the U-shaped connector 29 for limiting during the downward movement of the positioning wheel 14, thereby preventing the upper half of the center shaft 21 from completely separating from the linear bearing 22, and finally, the anti-slip nut 24 is pressed downward by a copper column nut 44 to achieve the purpose of double locking and releasing.

[0071] The top of the positioning carrier 8 is provided with a positioning pin 45 corresponding to the screw hole on the main body of the inspection cover 1 and a plug 46 that is laterally inserted into the shaft hole on the main body of the inspection cover 1. The top of the positioning carrier 8 is also provided with a first shaft seat 47. One end of the plug 46 is formed with a guide rod 48 that is slidably plugged with the first shaft seat 47. The middle of the plug 46 is provided with a thickened limit portion 49, and a handle 50 is vertically screwed on the limit portion 49. When loading the inspection cover 1, the workers in the front-end process workshop only need to align the two stepped screw holes at one point of the inspection cover 1 with the corresponding two positioning pins 45 and put it down. Then, the handle 50 is used to push the plug 46 horizontally to make it enter the shaft hole at the other end of the inspection cover 1 to complete the fixing of the inspection cover 1. The limit portion 49 is used to touch the outer wall of the inspection cover 1 for limiting after the plug 46 is fully inserted.

[0072] The lifting mechanism 9 includes a U-shaped base 51, a thin cylinder 52 fixedly arranged on one side of the U-shaped base 51, a slide 53 slidably arranged on the inner side of the U-shaped base 51, a roller 54 axially connected to the top of the slide 53, a platform 55 movably arranged above the U-shaped base 51 and a limiter 56 fixedly arranged on the other side of the U-shaped base 51, a plurality of second shaft seats are arranged on the inner walls on both sides of the U-shaped base 51, a plurality of guide shafts 57 slidably matched with the corresponding second shaft seats are fixedly connected to the bottom of the platform 55, and a guide block 58 contacting with the roller 54 is arranged at the bottom of the platform 55.

[0073] When the multifunctional embedding claw 10 brings the sealing ring 2 to the top of the inspection cover 1, the lifting mechanism 9 is activated, and the thin cylinder 52 drives the slide 53 to translate in the U-shaped base 51. During this process, the roller 54 on the top of the slide 53 contacts the guide block 58 at the bottom of the platform 55, thereby driving the platform 55 to rise with the cooperation of the guide block 58 and the guide shaft 57. After the platform 55 rises, it lifts up the positioning carrier 8 together with the inspection cover 1, so that the inspection cover 1 will embed the sealing ring 2 while lifting the positioning wheel 14 to completely separate it from the sealing ring 2 during the upward process, until the sealing ring 2 is embedded in the slot 4 of the inspection cover 1.

[0074] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An automatic installation device for sealing rings of a photovoltaic box inspection cover, comprising a conveyor belt (6) and a 90° turning mechanism (7) arranged on one side of the conveyor belt (6), characterized in that: It also includes a plurality of positioning carriers (8) spaced apart on the conveyor belt (6) and a lifting mechanism (9) located in the middle of the conveyor belt (6), wherein the lifting mechanism (9) is arranged relative to the 90° turning mechanism (7), and the lifting mechanism (9) is used to lift the positioning carrier (8) upwards, and a multifunctional embedding claw (10) for picking up and embedding the sealing ring (2) is connected to the end of the movable arm of the 90° turning mechanism (7); The conveyor belt (6) is provided with a plurality of baffles (11) distributed at equal intervals and used to drive the positioning vehicle (8) forward; The multifunctional embedding claw (10) comprises a pressing plate (12), a positioning plate (13) fixed above the pressing plate (12) in parallel and at intervals, four positioning wheels (14) for pressing against the sealing ring (2) from the inside to the outside, and a retracting mechanism for driving the four positioning wheels (14) to expand or retract synchronously; The pressing plate (12) and the positioning plate (13) are each provided with four limiting sliding holes (15) for limiting the sliding track of the corresponding positioning wheel (14), and the limiting sliding holes (15) on the pressing plate (12) and the positioning plate (13) are arranged in a one-to-one correspondence; The retractable mechanism comprises a central screw (16) rotatably connected to the center of the pressure plate (12), a traction hinge sleeve (59) threadedly connected to the outside of the central screw (16), a limit stand (17) for limiting the rotation of the traction hinge sleeve (59), four sets of parallel connecting rod stabilizing arms (18) and a motor (19) arranged on the top of the limit stand (17) and used to drive the central screw (16) to rotate, one end of each set of parallel connecting rod stabilizing arms (18) is hinged to the upper half of the corresponding positioning wheel (14), and the other end is hinged to the outer side of the traction hinge sleeve (59); The positioning wheel (14) comprises a truncated cone-shaped wheel (20), a central shaft (21) whose lower end is coaxially connected to the truncated cone-shaped wheel (20), a linear bearing (22) movably sleeved on the upper half of the central shaft (21), a spring (23) for driving the truncated cone-shaped wheel (20) downward, and an anti-drop nut (24) arranged at the top end of the central shaft (21); The slope of the outer contour of the truncated cone-shaped wheel (20) is consistent with the slope of the inner wall of the sealing ring (2); An I-shaped pulley (25) is arranged above the truncated cone wheel (20), the spring (23) is located between the I-shaped pulley (25) and the linear bearing (22), the upper and lower ends of the I-shaped pulley (25) are both embedded with ball bearings (26) for being sleeved on the central shaft (21), the I-shaped pulley (25) is slidably arranged in a limiting sliding hole (15) on the pressure plate (12), and a first shallow groove (27) facing upward is formed on the bottom surface of each limiting sliding hole (15), the groove width of the first shallow groove (27) is larger than the groove width of the limiting sliding hole (15) and smaller than the wheel diameter of the truncated cone wheel (20), and the lower edge of the I-shaped pulley (25) will abut against the top wall of the first shallow groove (27) during the upward movement.

2. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 1 is characterized in that: The parallel link stabilizing arm (18) comprises two straight links (28) of equal length and arranged in parallel, the same ends of the two straight links (28) being connected via a U-shaped connecting piece (29), the U-shaped connecting piece (29) being provided with two connecting pins (60) arranged in a horizontal state and spaced apart from each other, the end of each straight link (28) being axially connected to the two ends of the corresponding connecting pin (60), the two U-shaped connecting pieces (29) being arranged in a vertical state, and the two ends of one of the U-shaped connecting pieces (29) being sleeved The linear bearing (22) is arranged on the corresponding central axis (21), and the linear bearing (22) on the central axis (21) is located on the inner side of the U-shaped connecting piece (29). Another U-shaped connecting piece (29) is axially connected to a connecting seat (30) fixedly arranged on the traction hinge sleeve (59), and the rotation pivot of the U-shaped connecting piece (29) and the connecting seat (30) is parallel to the central screw rod (16). The number of the connecting seats (30) is four, and the four connecting seats (30) are respectively connected to four corresponding U-shaped connecting pieces (29) in a one-to-one correspondence.

3. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 2 is characterized in that: The outer wall of the traction hinge sleeve (59) is provided with four embedding grooves (31) for accommodating the connecting seat (30) respectively, and the upper and lower ends of the traction hinge sleeve (59) are respectively sleeved with first limiting rings (32) for fastening the end of the connecting seat (30) in the embedding grooves (31).

4. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 1 is characterized in that: The outer wall of the traction hinge sleeve (59) is formed with four protrusions (33) which are spaced apart in the circumferential direction and protrude outwards. Each of the protrusions (33) is provided with a limit groove (34) whose extension direction is consistent with the axial direction of the traction hinge sleeve (59). The limit stand (17) is composed of a fixed chassis (35) and four limit bars (36) which are equally spaced apart in the circumferential direction. The four limit bars (36) are slidably embedded in the corresponding limit grooves (34) one by one. The fixed chassis (35) is fixedly connected to the center of the positioning plate (13). The four limit bars (36) are connected to the positioning plate (13) at the center of the positioning plate (13). The lower ends of the four limit bars (36) are fixedly connected to the edge of the central through hole of the fixed chassis (35), and a second limit ring (37) is embedded in the inner side of the upper ends of the four limit bars (36) to tighten the limit bars (36) from the inside to the outside. An inverted V-shaped frame (38) is fixedly arranged on the top of the positioning plate (13), and the motor (19) is fixedly arranged on the top of the V-shaped frame (38) and the output shaft of the motor (19) is fixedly connected to the upper end of the central screw (16). The top of the V-shaped frame (38) is provided with a central through hole for contacting and limiting the outer walls of the four limit bars (36).

5. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 2 is characterized in that: The top of the I-shaped pulley (25) is provided with a boss gasket (39) sleeved on the central shaft (21) for contacting the corresponding bearing inner ring downward, wherein a U-shaped connecting piece (29) sleeved on the central shaft (21) is provided with an L-shaped limiting ring (40) at the bottom, the L-shaped limiting ring (40) is slidably arranged in the limiting sliding hole (15) on the positioning plate (13), and the upper surface of the limiting sliding hole (15) is provided with a second shallow groove (41) facing downward, the upper edge of the L-shaped limiting ring (40) is slidably embedded in the second shallow groove (41), the upper and lower ends of the spring (23) respectively abut against the U-shaped connecting piece (29) and the boss gasket (39), and the upper end of the spring (23) extends into the inner side of the L-shaped limiting ring (40).

6. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 1 is characterized in that: The outer side of the central shaft (21) is sleeved with an adapter sleeve (42), the outer wall of the adapter sleeve (42) is in sliding contact with the inner side of the linear bearing (22), the upper end of the central shaft (21) is provided with a threaded column (43), the anti-slip nut (24) is screwed onto the threaded column (43), and the top of the anti-slip nut (24) is provided with a copper column nut (44) which is screwed onto the threaded column (43) and presses downward against the anti-slip nut (24).

7. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 1 is characterized in that: The top of the positioning carrier (8) is provided with a positioning pin (45) corresponding to the screw hole on the main body of the inspection cover (1) and a latch (46) which is laterally inserted into the shaft hole on the main body of the inspection cover (1). The top of the positioning carrier (8) is also provided with a first shaft seat (47). One end of the latch (46) is formed with a guide rod (48) which is slidably connected to the first shaft seat (47). The middle of the latch (46) is provided with a thickened limit portion (49), and a handle (50) is vertically screwed on the limit portion (49).

8. The automatic installation device for sealing ring of photovoltaic box inspection cover according to claim 1 is characterized in that: The lifting mechanism (9) comprises a U-shaped base (51), a thin cylinder (52) fixedly arranged on one side of the U-shaped base (51), a slide table (53) slidably arranged on the inner side of the U-shaped base (51), a roller (54) axially connected to the top of the slide table (53), a platform (55) movably arranged above the U-shaped base (51), and a limiter (56) fixedly arranged on the other side of the U-shaped base (51), a plurality of second shaft seats are arranged on the inner walls of both sides of the U-shaped base (51), a plurality of guide shafts (57) slidably matched with the corresponding second shaft seats are fixedly connected to the bottom of the platform (55), and a guide block (58) contacting the roller (54) is arranged at the bottom of the platform (55).

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