A uniform feeding device for a photovoltaic box sealing ring

Abstract

The present invention relates to the technical field of automatic feeding of sealing rings, and specifically relates to a uniform feeding device for photovoltaic box sealing rings. The feeding assembly is arranged in a horizontal state. Each feeding assembly includes two special-shaped spiral shafts, a driving mechanism and a limiting cover. The special-shaped spiral shaft is composed of a central shaft and spiral blades formed outside the central shaft. The spiral blades are composed of two groups of first spiral blades and second spiral blades distributed at equal intervals. A temporary storage slot is formed between each second spiral blade and the first spiral blades on both sides, and a preloading slot is formed at the middle position of each first spiral blade. The present invention can be generally used for the directional feeding of rectangular sealing rings. The mounted sealing rings are transported forward by the synchronous rotation of symmetric double special-shaped spiral rods to the temporary storage slots for stable picking. At the same time, workers can hang the idle feeding assemblies with sealing rings, making it possible for one person to be in charge of multiple workstations. On parallel double production lines, one worker can take turns to operate between the workstations of the two production lines.

Description

Technical Field

[0001] The invention relates to the technical field of automatic feeding of sealing rings, and in particular to a uniform feeding device for sealing rings of photovoltaic boxes. Background Art

[0002] The photovoltaic box, one of the main die-cast aluminum products of the applicant's factory, is still mainly assembled on a production line with operators. With the increase in production capacity and the growth of labor costs, as well as the progress of industry, the advantages of automated production lines are obvious. Therefore, the applicant urgently needs to optimize and upgrade the existing production lines. On the assembly line of its main product, the photovoltaic box, for the automatic assembly line of the sealing ring of the inspection cover, how to provide directional and stable feeding of the sealing ring is a major difficulty. At present, the existing feeding methods in the industry are mostly designed to design a carrier dedicated to a sealing ring of a specific shape, on which there are several array-distributed containers for accommodating the sealing ring. The sinking groove of the sealing ring can realize directional work and material by pre-setting the sealing ring array on the carrier and then picking up the robot arm of other processes. However, this method cannot accommodate more sealing rings due to the limited plane area of the carrier. In addition, the workers need to make multiple position adjustments according to the shape of the sealing rings during the process of pre-setting the sealing rings on the carrier. It requires high operating proficiency and experience of the workers and has many disadvantages. In some workshops, multiple identical assembly lines are often set up in parallel for operation. The corresponding workstation on each assembly line needs to be equipped with a worker to operate, which invisibly increases the labor cost and is inefficient. Summary of the invention

[0003] Based on this, it is necessary to provide a uniform feeding device for a photovoltaic box sealing ring in response to 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] A uniform feeding device for a photovoltaic box sealing ring comprises a turntable and a central column arranged on the turntable, and at least two groups of feeding components evenly distributed along the circumferential direction and arranged on the top of the central column, wherein the feeding components are arranged in a horizontal state;

[0006] Each of the feeding components comprises two horizontal and mirror-parallel shaped spiral shafts, a driving mechanism disposed on the top of the central main column and used to drive the two shaped spiral shafts to rotate synchronously in opposite directions, and a limiting cover covering the two shaped spiral shafts;

[0007] The driving mechanism comprises a U-shaped base fixedly arranged on the top of the central column and a micro-stepping motor fixed on one side of the U-shaped base, the same end of the two special-shaped spiral shafts are axially connected to the U-shaped base, and two mutually meshing gears are arranged in the U-shaped base, one of the gears is connected to the output shaft of the micro-stepping motor, and the two gears are respectively connected to the corresponding special-shaped spiral shafts in a transmission manner;

[0008] The special-shaped spiral shaft is composed of a central shaft and spiral blades formed outside the central shaft. The spiral blades are composed of two groups of first spiral blades and second spiral blades distributed at equal intervals. The number of revolutions of the first spiral blade is 1 turn. The starting section and the ending section of each first spiral blade are each composed of a transition section with a 45° wrap angle and a flat bottom section with a 45° wrap angle. The number of revolutions of the second spiral blade is 0.5 turn. Each second spiral blade is arranged between two adjacent first spiral blades corresponding to it. The starting end and the ending end of each second spiral blade are respectively connected to the flat bottom sections at the corresponding starting ends and ending ends of the first spiral blades on both sides;

[0009] The number of the first spiral blades is the same as that of the second spiral blades, and one end of the special-shaped spiral shaft far from the driving mechanism is in the form with the first spiral blade on the outside;

[0010] A temporary storage slot for stably accommodating a single sealing ring is formed between each second spiral blade and the flat bottom sections of the first spiral blades on both sides, and a preloading slot for hanging a single sealing ring is formed at the middle position of each first spiral blade.

[0011] Further, positioning shaft brackets for axially connecting the special-shaped spiral shaft are respectively and fixedly arranged on both sides of the U-shaped base. Two U-shaped bases are symmetrically and fixedly arranged on both sides of the U-shaped base. A first synchronous pulley is sleeved on the end of each special-shaped spiral shaft, and a second synchronous pulley is coaxially and fixedly connected to each gear. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0012] Further, each gear is axially and fixedly connected to the inside of the U-shaped base through a first rotating shaft. Both ends of each first rotating shaft are connected to the corresponding side walls of the U-shaped base through a first bearing. Two first accommodating grooves for accommodating the first bearing are formed on one side wall of the U-shaped base, and a circular through hole is formed on the other side wall. A bearing positioning plate close to the circular through hole is fixedly connected to one side wall of the U-shaped base. A second accommodating groove for accommodating the first bearing is formed on the side of the bearing positioning plate close to the circular through hole. The diameter of the circular through hole is larger than the inner diameter of the first bearing and smaller than the outer diameter of the first bearing. The bearing positioning plate is fixedly connected to the side wall of the U-shaped base through a copper column. The bearing positioning plate presses the outer ring of the first bearing against the side wall of the U-shaped base. One end of the limit cover close to the central column is formed with a first vertical plate extending vertically downward into the U-shaped base. The first vertical plate is fixedly connected to the inner wall of the U-shaped base provided with the first accommodating groove in a fitting manner. Two positioning holes for sleeving and positioning the first bearing are formed on the first vertical plate. A first gasket screw for pressing against the inner ring of the corresponding first bearing is screwed on the end of the first rotating shaft far from the micro stepping motor. The second synchronous pulley is sleeved on the first rotating shaft and is located between the first vertical plate and the gear.

[0013] Further, one end of the special-shaped spiral shaft is provided with a connecting shaft whose shaft diameter is smaller than that of the central shaft. The connecting shaft is axially connected to the upper end of the positioning shaft frame. The first synchronous pulley is sleeved on the connecting shaft and is located between the spiral blades and the positioning shaft frame. A second vertical plate is also formed between the first vertical plate and the limiting cover. The second vertical plate is located between the limiting cover and the first vertical plate. Support grooves for supporting the rotation of the spiral shaft are formed on both sides of the second vertical plate. Two flange bushings with different sizes are sequentially sleeved outside the connecting shaft. The second vertical plate is embedded between the large-end disk surfaces of the two flange bushings through the support grooves. The small ends of the two flange bushings are simultaneously attached to the end surface of the first synchronous pulley.

[0014] Further, a reinforcing connecting plate fixedly connected to the side wall of the U-shaped base is fixed to the top of the limiting cover. A fastening plate extending above the U-shaped base and bent downward to fit against the side wall of the U-shaped base is formed on the reinforcing connecting plate. The fastening plate is fixedly arranged between the micro stepping motor and the U-shaped base.

[0015] Further, a horizontally arranged support bar is provided directly below the limiting cover. One end of the support bar is fixedly connected to the side wall of the U-shaped base, and the other end is formed with a U-shaped bracket extending vertically upward. A riveting pin shaft is fixedly connected to each of the upward-facing ends of the U-shaped bracket. A pin hole for docking the riveting pin shaft is formed at the corresponding end of the special-shaped spiral shaft. The upward-facing ends of the U-shaped bracket are higher than the central shaft of the special-shaped spiral shaft. An inclined support frame in an inclined state is fixedly arranged between the bottom of the end of the support bar close to the U-shaped bracket and the central column.

[0016] Further, flared guiding portions bent outward are respectively formed on the front side walls of the limiting cover.

[0017] Further, axial limit cooperation is carried out between the first rotating shaft, the second synchronous pulley and the gear through a first flat key pin. A transfer shaft is connected to one end of the first rotating shaft close to the micro stepping motor. One end of one transfer shaft passes through the corresponding first bearing and is connected to the output shaft of the micro stepping motor through a coupling. A D-shaped shaft is formed at the end of the first rotating shaft connected to the transfer shaft. A jack for inserting the D-shaped shaft is formed at the corresponding end of the connecting shaft. A jackscrew hole for radially jacking and pressing the D-shaped shaft is formed on the side wall of the connecting shaft. A first flat washer is also sleeved on the D-shaped shaft. The first flat washer is located between the gear and the transfer shaft and is pressed against the side wall of the gear.

[0018] Further, an axial limit fit is performed between the connecting shaft and the first synchronous pulley through a second flat key pin. The connecting shaft is connected to the positioning shaft bracket through a second rotating shaft. One end of the second rotating shaft is formed with a threaded column, and a first threaded hole for connecting the threaded column is opened at the end of the connecting shaft. A second flat washer for pressing against the first synchronous pulley is sleeved on the threaded column. Two second bearings are embedded in the positioning shaft bracket. A second threaded hole is formed at the end of the second rotating shaft away from the threaded column. The second rotating shaft passes through the two second bearings in sequence and is screwed with a second gasket screw. The second gasket screw and the second flat washer press against the inner rings of the two second bearings in opposite directions.

[0019] The beneficial effects of the present invention compared with the prior art are as follows:

[0020] First, the present invention can be commonly used for the directional feeding of rectangular sealing rings. The symmetric double special-shaped spiral rods rotate synchronously to forwardly convey the mounted sealing rings to the temporary storage slots for stable picking.

[0021] Second, the present invention performs directional feeding by multiple groups of feeding components in turn. During the feeding process, the worker can hang the sealing rings on the idle feeding components, thus liberating the workers at this station and making it possible for one person to be in charge of multiple stations. On the parallel double assembly lines, one worker can take turns to operate between the stations of the two assembly lines.

[0022] Third, the present invention realizes the intermittent and precise rotation of the special-shaped spiral rod through a stepping motor, and cooperates with the limit cover to make the forward movement process of the sealing ring more stable and reliable. Description of the Drawings

[0023] Figure 1 is the three-dimensional structure schematic diagram of the present invention Figure 1 ;

[0024] Figure 2 is the three-dimensional structure schematic diagram of the present invention Figure 2 ;

[0025] Figure 3 is the three-dimensional schematic diagram of the partial structure of the present invention;

[0026] Figure 4 is the top view of a single feeding component;

[0027] Figure 5 is Figure 4 the plane cross-sectional view along line A-A in

[0028] Figure 6 is Figure 4 the plane cross-sectional view along line B-B in

[0029] Figure 7Schematic three-dimensional structure diagram of the feeding component without a limit cover;

[0030] Figure 8 is Figure 7 Schematic plan view;

[0031] Figure 9 Schematic three-dimensional structure of the feeding component Figure 1 ;

[0032] Figure 10 Schematic three-dimensional structure of the feeding component Figure 2 ;

[0033] Figure 11 Schematic three-dimensional structure of the partial structure of the feeding component Figure 1 ;

[0034] Figure 12 Schematic exploded three-dimensional view of the feeding component;

[0035] Figure 13 Schematic exploded three-dimensional view at the special-shaped spiral shaft of the feeding component;

[0036] Figure 14 Schematic three-dimensional structure of the partial structure of the feeding component Figure 2 ;

[0037] Figure 15 Schematic three-dimensional structure of the partial structure of the feeding component Figure 3 ;

[0038] Figure 16 Schematic three-dimensional structure of the partial structure of the feeding component Figure 4 ;

[0039] Figure 17 Schematic three-dimensional structure assembly diagram of the U-shaped base and the gear;

[0040] Figure 18 is Figure 17 Schematic exploded three-dimensional view;

[0041] Figure 19 Front view and top view of the special-shaped spiral shaft;

[0042] The numbers in the figure are: 1-central column; 2-special-shaped spiral shaft; 3-limiting cover; 4-U-shaped base; 5-micro stepping motor; 6-central axis; 7-first rotor blade; 8-second rotor blade; 9-transition part; 10-flat bottom; 11-temporary storage slot; 12-preload slot; 13-positioning shaft frame; 14-first synchronous wheel; 15-second synchronous wheel; 16-synchronous belt; 17-first rotating shaft; 18-first bearing; 19-first receiving groove; 20-circular through hole; 21-bearing positioning plate; 22-second receiving groove; 23-copper column; 24-first vertical plate; 25-positioning hole; 26-first gasket screw; 27- Connecting shaft; 28-second vertical plate; 29-support groove; 30-flange sleeve; 31-reinforced connecting plate; 32-fastening plate; 33-support bar; 34-U-shaped bracket; 35-riveted pin shaft; 36-oblique support frame; 37-flared guide part; 38-first flat key pin; 39-adapter shaft; 40-coupling; 41-D-axis; 42-socket; 43-top screw hole; 44-first flat washer; 45-second flat key pin; 46-second rotating shaft; 47-threaded column; 48-first threaded hole; 49-second flat washer; 50-second bearing; 51-second threaded hole; 52-second gasket screw; 53-gear. 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] Reference Figures 1 to 19 The uniform feeding device of the sealing ring of a photovoltaic box shown in the figure comprises a turntable and a central column 1 arranged on the turntable, and also comprises at least two groups of feeding components evenly distributed along the circumferential direction and arranged on the top of the central column 1, wherein the feeding components are arranged in a horizontal state;

[0045] Each of the feeding components comprises two horizontal and mirror-parallel shaped spiral shafts 2, a driving mechanism disposed on the top of the central main column and used to drive the two shaped spiral shafts 2 to rotate synchronously in opposite directions, and a limiting cover 3 covering the two shaped spiral shafts 2;

[0046] The driving mechanism includes a U-shaped base 4 fixedly arranged on the top of the central column 1 and a micro-stepping motor 5 fixed on one side of the U-shaped base 4. The same end of the two special-shaped spiral shafts 2 is axially connected to the U-shaped base 4. Two mutually meshing gears 53 are arranged in the U-shaped base 4, one of the gears 53 is connected to the output shaft of the micro-stepping motor 5, and the two gears 53 are respectively connected to the corresponding special-shaped spiral shafts 2 in transmission.

[0047] The special-shaped spiral shaft 2 is composed of a central shaft 6 and spiral blades formed outside the central shaft 6. The spiral blades are composed of two groups of first spiral blades 7 and second spiral blades 8 distributed at equal intervals. The number of revolutions of the first spiral blade 7 is 1 circle. The starting section and the ending section of each first spiral blade 7 are each composed of a transition part 9 with a 45° included angle and a flat bottom part 10 with a 45° included angle. The 45° included angle means that within the range of one circle of the spiral, the transition part 9 and the flat bottom part 10 each account for one-eighth of a circle of the spiral. The number of revolutions of the second spiral blade 8 is 0.5 circle. Each second spiral blade 8 is arranged between two adjacent first spiral blades 7. The starting end and the ending end of each second spiral blade 8 are respectively connected to the flat bottom parts 10 corresponding to the starting end and the ending end of the first spiral blades 7 on both sides. After this setting, a sealing ring can be stably accommodated and hung between the flat bottom parts 10 of two adjacent first spiral blades 7. During the process of the second spiral blade 8 rotating one circle, the sealing ring at this time can be sent out from the stable space between the two flat bottom parts 10, so that the sealing ring enters the range of the front first spiral blade 7 for pre-hanging;

[0048] The number of the first spiral blades 7 is the same as that of the second spiral blades 8, and one end of the special-shaped spiral shaft 2 far from the driving mechanism is in the form with the first spiral blade 7 on the outside;

[0049] A temporary storage slot 11 for stably accommodating a single sealing ring is formed between each second spiral blade 8 and the flat bottom parts 10 of the first spiral blades 7 on both sides. When the sealing ring is located in the temporary storage slot 11, its state is stable and it will not move laterally, thus ensuring that it can be stably taken away. The middle position of each first spiral blade 7 forms a preloading slot 12 for hanging a single sealing ring. When the sealing ring is located in the preloading slot 12, it still has the freedom of lateral movement. After the first spiral blade 7 rotates one circle, the sealing ring in the preloading slot 12 will be transferred to the temporary storage slot 11 for stable storage. When the sealing ring is in the temporary storage slot 11, the second spiral blade 8 is located at the bottom of the central shaft 6. When the central shaft 6 rotates one circle, in the first half circle, the second spiral blade 8 sends the sealing ring forward from the temporary storage slot 11 into the range of the preloading slot 12. In the second half circle of the rotation process, due to the design that the second spiral blade 8 only has 0.5 circle, there is no entity in contact with the sealing ring entering the temporary storage slot 11 above it in the second half circle of the rotation process. Therefore, during the process of the entire special-shaped spiral shaft 2 rotating one circle, the sealing ring originally in the temporary storage slot 11 is sent forward, and the sealing ring in the range of the rear preloading slot 12 is sent forward to the previous temporary storage slot 11 without being blocked by the second spiral blade 8.

[0050] Working principle: This device is arranged on the assembly line for directional feeding of other sealing ring automatic embedding equipment. This device stores the sealing rings through at least two feeding components, and cooperates with the rotation of the turntable to drive the switching of the corresponding feeding components. Workers pre-load the sealing rings onto the unloaded feeding components. The specific process is that the workers mount the sealing rings one by one on the front ends of the two special-shaped spiral shafts 2, and then transport the sealing rings backward to the bottom of the limit cover 3 through the intermittent rotation of the driving mechanism, until the temporary storage slots 11 on the two special-shaped spiral rods of the feeding component are all full of sealing rings. In this way, all feeding components are pre-hung with sealing rings to complete pre-storage.

[0051] During operation, the turntable drives the corresponding feeding assembly to the predetermined working position. After the sealing ring automatic embedding device takes away the sealing ring mounted on the front end of the two special-shaped spiral shafts 2, the micro-stepping motor 5 is controlled by the control system to intermittently drive the two special-shaped spiral rods to rotate toward each other. The rotation of the micro-stepping motor 5 once drives the two special-shaped spiral shafts 2 to rotate one circle. During this process, in conjunction with the upper limit cover 3, the first rotary blade 7 rotates one circle, thereby moving the sealing ring originally in the preload slot 12 forward to the temporary storage slot 11 for the next pick-up by the sealing ring automatic embedding device. In this way, the directional feeding process of all sealing rings on a single feeding assembly is completed.

[0052] When all the sealing rings on a feeding assembly are taken out, the turntable rotates to drive the next feeding assembly to the working position, and the empty feeding assembly can be reloaded by the workers. In particular, the limit cover 3 can be set to a flip-top structure, that is, after the limit cover 3 is flipped upward, the workers can quickly hang the sealing rings one by one into the temporary storage slot 11 and the preload slot 12. Compared with the method of transporting the sealing rings hung from the front end to the rear one by one through the reversal of the two special-shaped spiral shafts 2, it has higher efficiency. This flip-top form is not shown in the attached drawings.

[0053] In order to make the special-shaped spiral shaft 2 fixed-point shaft connection and enable it to be respectively connected to the two gears 53 by transmission, the following features are specifically set:

[0054] The two sides of the U-shaped base 4 are respectively fixed with positioning shaft frames 13 for the special-shaped spiral shaft 2 to be connected. The two U-shaped bases 4 are symmetrically fixed on the two sides of the U-shaped base 4. The end of each special-shaped spiral shaft 2 is sleeved with a first synchronous wheel 14, and each gear 53 is coaxially fixed with a second synchronous wheel 15. The first synchronous wheel 14 and the second synchronous wheel 15 are connected by a synchronous belt 16. The micro stepping motor 5 drives the two gears 53 to rotate in opposite directions. Each gear 53 drives the first synchronous wheel 14 to connect to the special-shaped spiral shaft 2 through the second synchronous wheel 15 and the synchronous belt 16 to rotate together, so that the sealing rings mounted thereon are stably transported forward one by one through the opposite rotation of the two symmetrically arranged special-shaped spiral shafts 2.

[0055] To solve the problem of the fixed-point shaft connection of the gear 53 in the U-shaped base 4 and the smooth installation of each part, the following features are specifically set:

[0056] Each gear 53 is fixedly shaft-connected at a fixed point in the U-shaped base 4 through a first rotating shaft 17. Both ends of each first rotating shaft 17 are connected to the corresponding side walls of the U-shaped base 4 through a first bearing 18. Two first receiving grooves 19 for receiving the first bearing 18 are provided on one side wall of the U-shaped base 4, and a circular through hole 20 is provided on the other side wall. A bearing positioning plate 21 close to the circular through hole 20 is fixedly connected to one side wall of the U-shaped base 4. A second receiving groove 22 for receiving the first bearing 18 is provided on the side of the bearing positioning plate 21 close to the circular through hole 20. The aperture of the circular through hole 20 is larger than the inner ring diameter of the first bearing 18 and smaller than the outer ring diameter of the first bearing 18. The bearing positioning plate 21 is fixedly connected to the side wall of the U-shaped base 4 through a copper column 23. The bearing positioning plate 21 presses the outer ring of the first bearing 18 against the side wall of the U-shaped base 4. One end of the limit cover 3 close to the central column 1 is formed with a first vertical plate 24 extending vertically downward into the U-shaped base 4. The first vertical plate 24 is fixedly connected to the inner wall of the U-shaped base 4 provided with the first receiving groove 19 in a fitting manner. Two positioning holes 25 for sleeving and positioning the first bearing 18 are provided on the first vertical plate 24. A first gasket screw 26 that abuts against the inner ring of the corresponding first bearing 18 is screwed on the end of the first rotating shaft 17 away from the micro stepping motor 5. The second synchronous pulley 15 is sleeved on the first rotating shaft 17 and is located between the first vertical plate 24 and the gear 53.

[0057] The first rotating shaft 17 ensures that the gear 53 can rotate smoothly through the first bearings 18 at both ends. One of the first bearings 18 is pressed against one side wall of the U-shaped base 4 through the bearing positioning plate 21. The second receiving groove 22 on the bearing positioning plate 21 is used to stably clamp the outer ring of the first bearing 18 to prevent it from shifting and shaking. The outer ring of the other side of the first bearing 18 is pressed against the side wall of the U-shaped base 4, thus playing the role of fixing the outer ring of the first bearing 18 while not affecting the rotation of the inner ring of the first bearing 18; the other first bearing 18 is received in the first receiving groove 19. One side of the outer ring of the first bearing 18 is embedded in the positioning hole 25 on the first vertical plate 24 to prevent it from shifting and shaking and disengaging from the first receiving groove 19. In this way, the fixing of the first bearing 18 is conveniently completed, ensuring that the first rotating shaft 17 can rotate stably together with the gear 53.

[0058] In order to make the special-shaped spiral shaft 2 maintain a more stable horizontal state, the following features are specifically set to support the special-shaped spiral shaft 2:

[0059] One end of the special-shaped spiral shaft 2 is provided with a connecting shaft 27 whose shaft diameter is smaller than that of the central shaft 6. The connecting shaft 27 is axially connected to the upper end of the positioning shaft bracket 13. The first synchronous pulley 14 is sleeved on the connecting shaft 27 and is located between the spiral blades and the positioning shaft bracket 13. A second vertical plate 28 is formed between the first vertical plate 24 and the limit cover 3. The second vertical plate 28 is located between the limit cover 3 and the first vertical plate 24. Support grooves 29 for supporting the rotation of the spiral shaft are formed on both sides of the second vertical plate 28. Two flange bushings 30, one large and one small, are sequentially sleeved on the connecting shaft 27. The second vertical plate 28 is embedded between the large end discs of the two flange bushings 30 through the support grooves 29. The small ends of the two flange bushings 30 are simultaneously attached to the end face of the first synchronous pulley 14. The larger flange bushing 30 is sleeved on the smaller flange bushing 30. The larger flange bushing 30 is arranged in the support groove 29 at the end of the second vertical plate 28. The two flange plates of the two flange bushings 30 are respectively attached to both sides of the second vertical plate 28. In this way, a second support for the special-shaped spiral shaft 2 other than the positioning shaft bracket 13 is realized, further ensuring the horizontal stability of the special-shaped spiral shaft 2.

[0060] In order to ensure the horizontal stability of the limit cover 3, when it has been fixedly connected to the U-shaped base 4 through the first vertical plate 24, the following features are specifically set:

[0061] A reinforcement connecting plate 31 fixedly connected to the side wall of the U-shaped base 4 is fixed to the top of the limit cover 3. A fastening plate 32 extending above the U-shaped base 4 and bending downward and fitting against the side wall of the U-shaped base 4 is formed on the reinforcement connecting plate 31. The fastening plate 32 is fixedly arranged between the micro stepping motor 5 and the U-shaped base 4. By adding a reinforcement connecting plate 31 to the tail of the limit cover 3 and fixedly connecting it to the side wall of the U-shaped base 4 far from the first vertical plate 24 through the fastening plate 32 on the reinforcement connecting plate 31, the pulling and fixing of the tail end of the limit cover 3 are realized, further ensuring that the limit cover 3 can stably cover the upper part of the two special-shaped spiral shafts 2 in a horizontal state.

[0062] In order to further ensure the horizontal stability of the special-shaped spiral shaft 2, the following features are specifically set:

[0063] A horizontal support bar 33 is provided directly below the limit cover 3. One end of the support bar 33 is fixedly connected to the side wall of the U-shaped base 4, and the end of the support bar 33 fixedly connected to the U-shaped base 4 is simultaneously in close contact with the outer ring of the first bearing 18 to prevent the first bearing 18 from laterally falling off from the first receiving groove 19. The other end is formed with a U-shaped bracket 34 extending vertically upward. A riveting pin shaft 35 is fixedly connected to each of the upward-facing ends of the U-shaped bracket 34. A pin hole for docking the riveting pin shaft 35 is formed at the corresponding end of the special-shaped spiral shaft 2. The upward-facing ends of the U-shaped bracket 34 are both higher than the central axis 6 of the special-shaped spiral shaft 2. A slanted support frame 36 in an inclined state is fixedly arranged between the bottom of the end of the support bar 33 close to the U-shaped bracket 34 and the central column 1. By inserting the riveting pin shaft 35 on the U-shaped bracket 34 at the front end of the support bar 33 into the pin hole at the front end of the special-shaped spiral shaft 2, the front overhanging end of the special-shaped spiral shaft 2 is supported. The diameter of the pin hole is larger than the diameter of the riveting pin shaft 35 to prevent hindering the rotation of the special-shaped spiral shaft 2. The support bar 33 is stably supported in a triangular structure by the slanted support frame 36. In this way, the horizontal stability of the special-shaped spiral shaft 2 is further ensured, and the stability of the feeding process is guaranteed.

[0064] In order to ensure that the sealing ring can smoothly enter the inside of the limit cover 3 from the front end of the special-shaped spiral shaft 2 during the process of loading the sealing ring, the following features are specifically set:

[0065] Flared guiding portions 37 that bend outward are respectively formed on the front side walls of the limit cover 3. The inclined outward-expanding guiding portions are used to increase the opening size at the front end of the limit cover 3 and simultaneously form an inclined surface guiding structure, ensuring that the sealing ring can smoothly slide into the limit cover 3 along with the special-shaped spiral shaft 2 and preventing the sealing ring from getting stuck at the front end of the limit cover 3 and being unable to enter.

[0066] In order to achieve the convenient assembly and maintain the stability among the gear 53, the first bearing 18, the first rotating shaft 17 and other parts, the following features are specifically set:

[0067] The first rotating shaft 17 is axially limited and fitted with the second synchronous pulley 15 and the gear 53 through a first flat key pin 38. A transfer shaft 39 is connected to each end of the first rotating shaft 17 close to the micro stepping motor 5. One end of a transfer shaft 39 passes through the corresponding first bearing 18 and is connected to the output shaft of the micro stepping motor 5 through a coupling 40. A D-shaped shaft 41 is formed at the end of the first rotating shaft 17 connected to the transfer shaft 39. A jack 42 for inserting the D-shaped shaft 41 is provided at the corresponding end of the transfer shaft 39. A set screw hole 43 for radially pressing the D-shaped shaft 41 by a set screw is provided on the side wall of the transfer shaft 39. A first flat washer 44 is also sleeved on the D-shaped shaft 41. The first flat washer 44 is located between the gear 53 and the transfer shaft 39 and abuts against the side wall of the gear 53.

[0068] The first rotating shaft 17, the second synchronous pulley 15 and the gear 53 are connected by a first flat key pin 38, thus ensuring that the three can rotate together and preventing slipping.

[0069] In order to stably integrate the first bearing 18, the second synchronous pulley 15 and the gear 53 with the first rotating shaft 17, a first gasket screw 26 is screwed at one end of the first rotating shaft 17 and abuts against the inner ring of the first bearing 18 at this position. The other end of the first rotating shaft 17 is rotatably connected and pressed by a transfer shaft 39 against a first flat washer 44 to abut against the gear 53. Thus, the first bearing 18, the second synchronous pulley 15 and the gear 53 are firmly mounted on the first rotating shaft 17 by the limitation of the first flat washer 44 and the first gasket screw 26.

[0070] Finally, in order to connect one of the gears 53 to the micro stepping motor 5, the transfer shaft 39 is lengthened to extend out of the U-shaped base 4 and connected to the coupling 40, so as to realize the fixed connection with the micro stepping motor 5. And both transfer shafts 39 are firmly connected to the D-shaped shaft 41 at the end of the first rotating shaft 17 by means of set screws.

[0071] In order to ensure that the first synchronous pulley 14 can be stably coaxially fixed at the end of the special-shaped spiral shaft 2, the following features are specifically set:

[0072] The connection shaft 27 and the first synchronous pulley 14 are axially limited and fitted through a second flat key pin 45. The connection shaft 27 is connected to the positioning shaft bracket 13 through a second rotating shaft 46. One end of the second rotating shaft 46 is formed with a threaded post 47. The end of the connection shaft 27 is provided with a first threaded hole 48 for connecting the threaded post 47. A second flat washer 49 for pressing against the first synchronous pulley 14 is sleeved on the threaded post 47. Two second bearings 50 are embedded in the positioning shaft bracket 13. The end of the second rotating shaft 46 away from the threaded post 47 is formed with a second threaded hole 51. The second rotating shaft 46 passes through the two second bearings 50 in sequence and is screwed with a second gasket screw 52. The second gasket screw 52 and the second flat washer 49 press against the inner rings of the two second bearings 50 facing each other.

[0073] The second flat key pin 45 is used to ensure that the first synchronous pulley 14 can stably drive the special-shaped spiral shaft 2 to rotate and avoid slipping.

[0074] By fixedly connecting a second rotating shaft 46 to the end of the special-shaped spiral shaft 2, and the second rotating shaft 46 pressing a second flat washer 49 against the end of the connection shaft 27, and the second flat washer 49 pressing against the side wall of the first synchronous pulley 14, so that the second synchronous pulley 15 and the two flange shaft sleeves 30 are both stably installed on the connection shaft 27 at the end of the central shaft 6 to avoid falling off.

[0075] The second bearings 50 embedded on both sides of the positioning shaft bracket 13 are used for the second rotating shaft 46 to pass through. A second gasket screw 52 is screwed on the outer end of the second rotating shaft 46. The inner ring of the outer second bearing 50 is pressed by the second gasket screw 52, while the inner ring of the inner second bearing 50 is pressed by the second flat washer 49. In this way, the convenient installation of the two second bearings 50 on the positioning shaft bracket 13 is realized. At the same time, the smooth rotation of the special-shaped spiral shaft 2 is ensured by the two second bearings 50 arranged at intervals, and the horizontal stability of the special-shaped spiral shaft 2 is further enhanced.

[0076] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A uniform feeding device for a photovoltaic box sealing ring, comprising a turntable and a central column (1) arranged on the turntable, characterized in that, It further includes at least two groups of feeding components evenly distributed along the circumferential direction and arranged at the top of the central column (1), and the feeding components are arranged in a horizontal state; Each of the feeding components includes two special-shaped spiral shafts (2) arranged horizontally and mirror-symmetrically in parallel, a driving mechanism arranged at the top of the central main column and used to drive the two special-shaped spiral shafts (2) to rotate synchronously towards each other, and a limiting cover (3) covering above the two special-shaped spiral shafts (2); The driving mechanism includes a U-shaped base (4) fixedly arranged at the top of the central column (1) and a micro stepping motor (5) fixed to one side of the U-shaped base (4). The same ends of the two special-shaped spiral shafts (2) are axially connected to the U-shaped base (4). Two mutually meshing gears (53) are arranged inside the U-shaped base (4). One of the gears (53) is connected to the output shaft of the micro stepping motor (5), and the two gears (53) are respectively in transmission connection with the corresponding special-shaped spiral shafts (2); The special-shaped spiral shaft (2) is composed of a central shaft (6) and spiral blades formed outside the central shaft (6). The spiral blades are composed of two groups of first spiral blades (7) and second spiral blades (8) distributed at equal intervals. The number of revolutions of the first spiral blade (7) is 1 turn. The starting section and the ending section of each first spiral blade (7) are respectively composed of a transition part (9) with a 45° included angle and a flat bottom part (10) with a 45° included angle. The number of revolutions of the second spiral blade (8) is 0.5 turn. Each second spiral blade (8) is arranged between two adjacent first spiral blades (7). The starting end and the ending end of each second spiral blade (8) are respectively connected to the flat bottom parts (10) corresponding to the starting end and the ending end of the first spiral blades (7) on both sides; The number of the first spiral blades (7) is the same as that of the second spiral blades (8), and the end of the special-shaped spiral shaft (2) far from the driving mechanism is in the form with the first spiral blade (7) on the outside; A temporary storage slot (11) for stably accommodating a single sealing ring is formed between each second spiral blade (8) and the flat bottom parts (10) of the first spiral blades (7) on both sides, and a preloading slot (12) for hanging a single sealing ring is formed at the middle position of each first spiral blade (7); Positioning shaft brackets (13) for axially connecting the special-shaped spiral shafts (2) are respectively fixedly arranged on both sides of the U-shaped base (4). The two U-shaped bases (4) are symmetrically fixedly arranged on both sides of the U-shaped base (4). A first synchronous pulley (14) is sleeved on the end of each special-shaped spiral shaft (2), a second synchronous pulley (15) is coaxially and fixedly connected to each gear (53), and the first synchronous pulley (14) and the second synchronous pulley (15) are connected by a synchronous belt (16).

2. The uniform feeding device for a photovoltaic box sealing ring according to claim 1, wherein, Each gear (53) is pivotally connected to the inside of the U-shaped base (4) through a first rotating shaft (17). Both ends of each first rotating shaft (17) are connected to the corresponding side walls of the U-shaped base (4) through a first bearing (18). Two first receiving grooves (19) for receiving the first bearings (18) are formed in one side wall of the U-shaped base (4), and a circular through hole (20) is formed in the other side wall. A bearing positioning plate (21) close to the circular through hole (20) is fixedly connected to one side wall of the U-shaped base (4). A second receiving groove (22) for receiving the first bearing (18) is formed in the side of the bearing positioning plate (21) close to the circular through hole (20). The diameter of the circular through hole (20) is larger than the inner ring diameter of the first bearing (18) and smaller than the outer ring diameter of the first bearing (18). The bearing positioning plate (21) is fixedly connected to the side wall of the U-shaped base (4) through a copper column (23). The bearing positioning plate (21) presses the outer ring of the first bearing (18) against the side wall of the U-shaped base (4). One end of the limit cover (3) close to the central column (1) is formed with a first vertical plate (24) extending vertically downward into the U-shaped base (4). The first vertical plate (24) is fixedly connected to the inner wall of the U-shaped base (4) provided with the first receiving groove (19) in a fitting manner. Two positioning holes (25) for sleeving and positioning the first bearing (18) are formed in the first vertical plate (24). A first gasket screw (26) for pressing against the inner ring of the corresponding first bearing (18) is screwed onto the end of the first rotating shaft (17) away from the micro stepping motor (5). The second synchronous pulley (15) is sleeved on the first rotating shaft (17) and is located between the first vertical plate (24) and the gear (53).

3. The uniform feeding device for a photovoltaic box sealing ring according to claim 2, characterized in that, One end of the special-shaped spiral shaft (2) is provided with a connecting shaft (27) whose shaft diameter is smaller than that of the central shaft (6). The connecting shaft (27) is pivotally connected to the upper end of the positioning shaft frame (13). The first synchronous pulley (14) is sleeved on the connecting shaft (27) and is located between the spiral blade and the positioning shaft frame (13). A second vertical plate (28) is further formed between the first vertical plate (24) and the limit cover (3). The second vertical plate (28) is located between the limit cover (3) and the first vertical plate (24). Support grooves (29) for supporting the rotation of the spiral shaft are formed on both sides of the second vertical plate (28). Two flange shaft sleeves (30) with different sizes are sequentially sleeved on the connecting shaft (27). The second vertical plate (28) is installed between the large end discs of the two flange shaft sleeves (30) through the support grooves (29). The small ends of the two flange shaft sleeves (30) are simultaneously attached to the end face of the first synchronous pulley (14).

4. The uniform feeding device for a photovoltaic box sealing ring according to claim 1, characterized in that, A reinforcing connecting plate (31) fixedly connected to the top of the limiting cover (3) and the side wall of the U-shaped base (4) is provided. A fastening plate (32) extending above the U-shaped base (4), bending downward and fitting against the side wall of the U-shaped base (4) is formed on the reinforcing connecting plate (31). The fastening plate (32) is fixedly arranged between the micro stepping motor (5) and the U-shaped base (4).

5. The uniform feeding device for a photovoltaic box sealing ring according to claim 1, characterized in that, A horizontally arranged support bar (33) is provided directly below the limiting cover (3). One end of the support bar (33) is fixedly connected to the side wall of the U-shaped base (4), and a U-shaped bracket (34) extending vertically upward is formed at the other end. A riveting pin shaft (35) is fixedly connected to each of the upward-facing ends of the U-shaped bracket (34). A pin hole for docking the riveting pin shaft (35) is formed at the corresponding end of the special-shaped spiral shaft (2). The upward-facing ends of the U-shaped bracket (34) are both higher than the central axis (6) of the special-shaped spiral shaft (2). An obliquely arranged inclined support frame (36) is fixedly arranged between the bottom of the end of the support bar (33) close to the U-shaped bracket (34) and the central column (1).

6. The uniform feeding device for a photovoltaic box sealing ring according to claim 1, characterized in that, Flared guiding portions (37) bent outward are respectively formed on the front side walls of the limiting cover (3).

7. The uniform feeding device for a photovoltaic box sealing ring according to claim 2, characterized in that, Axial limiting cooperation is carried out between the first rotating shaft (17), the second synchronous pulley (15) and the gear (53) through a first flat key pin (38). A transfer shaft (39) is connected to each end of the first rotating shaft (17) close to the micro stepping motor (5). One end of one transfer shaft (39) passes through the corresponding first bearing (18) and is connected to the output shaft of the micro stepping motor (5) through a coupling (40). A D-shaped shaft (41) is formed at the end of the first rotating shaft (17) connected to the transfer shaft (39). A jack (42) for inserting the D-shaped shaft (41) is formed at the corresponding end of the transfer shaft (39). A jackscrew hole (43) for radially jacking and pressing the D-shaped shaft (41) is formed on the side wall of the transfer shaft (39). A first flat washer (44) is also sleeved on the D-shaped shaft (41). The first flat washer (44) is located between the gear (53) and the transfer shaft (39) and abuts against the side wall of the gear (53).

8. The uniform feeding device for a photovoltaic box sealing ring according to claim 3, characterized in that, An axial limit fit is carried out between the connecting shaft (27) and the first synchronous pulley (14) through a second flat key pin (45). The connecting shaft (27) is connected to the positioning shaft bracket (13) through a second rotating shaft (46). One end of the second rotating shaft (46) is formed with a threaded post (47). A first threaded hole (48) for connecting the threaded post (47) is opened at the end of the connecting shaft (27). A second flat washer (49) for tightly adhering to the first synchronous pulley (14) is sleeved on the threaded post (47). Two second bearings (50) are embedded in the positioning shaft bracket (13). A second threaded hole (51) is formed at the end of the second rotating shaft (46) away from the threaded post (47). After the second rotating shaft (46) sequentially passes through the two second bearings (50), a second gasket screw (52) is screwed. The second gasket screw (52) and the second flat washer (49) tightly adhere to the inner rings of the two second bearings (50) facing each other.

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