Ball core feeding mechanism, ball core and valve body assembly device and assembly method

Abstract

The present invention discloses a ball core feeding mechanism, a ball core and valve body assembly device and an assembly method, comprising: a feeding mechanism, a supporting turntable and a transfer mechanism, wherein the feeding mechanism comprises a pair of feeding assemblies and a material shifting block, when a plurality of ball cores enter in sequence, a pair of first conveyor belts rotate in opposite directions at the same speed, so that the longitudinally adjacent support seats and the ball cores are docked and transported laterally, and when the material shifting block moves, the material shifting block can elastically contact the circumference of the ball core and drive the ball core to rotate, or not contact the valve stem hole passing through the ball core; the transfer mechanism comprises a slider, a first support arm and a third support plate, wherein when the slider moves up and down, the support shaft moves up and down, and the other end thereof slides in a guide groove through the third support arm, so that the second support arm rotating with the support shaft performs a 90° flip during the movement; the present invention realizes the uniform arrangement of the ball cores at a specific angle, and clamps, flips, releases and presses down the ball cores, thereby completing the assembly between the ball cores and the valve body and the valve stem.

Description

Technical Field

[0001] The invention relates to a ball core assembly technology, belongs to the field of ball valve processing, and specifically relates to a ball core feeding mechanism, a ball core and valve body assembly device, and an assembly method. Background Art

[0002] The ball valve is a key control component in the fluid conveying system, which is mainly used to open and close pipelines, control flow direction, and adjust and control the parameters of the conveying medium. The main components of the ball valve include the ball core 12, the valve body 11, the valve stem, the valve bonnet and the corresponding seals. When assembling the ball valve, it is necessary to first fix the valve body 11 and place the seals, then pass the valve stem through the valve body 11 from the inside for connection, then install the ball core 12 in the valve body 11 and match it with the valve stem, and finally apply glue to the valve bonnet and assemble it with the valve body 11.

[0003] like Fig.13 As shown, the ball core 12 is provided with a through hole 13 for the medium to pass through, and a valve stem hole 14 matching the valve stem. During the assembly of the ball core 12 and the valve body 11, in order to ensure that the valve stem hole 14 corresponds to the valve stem, the ball core 12 needs to be fed at a specific angle; manual operation has problems such as insufficient installation position accuracy and low efficiency, and cannot meet the requirements of mass production, and some automatic feeding mechanisms of the ball core 12 mainly use vibration to make the ball core 12 face a certain angle. This method is very easy to cause damage to the surface of the ball core 12 during the feeding process of the ball core 12, thereby reducing the sealing quality of the ball valve. Summary of the invention

[0004] The object of the present invention is to provide a ball core feeding mechanism, which can realize uniform calibration of the ball cores at a specific angle while clamping and laterally conveying the ball cores that enter in sequence, so as to facilitate the assembly of the ball cores in the next process and avoid damage to the ball cores during the feeding process.

[0005] To achieve the above purpose, the present invention provides a ball core feeding mechanism, comprising:

[0006] A fixed plate, with a horizontally arranged strip groove in the middle;

[0007] The waiting platform is located on one side of the strip groove and is configured to receive the calibrated ball core;

[0008] The feeding components are a pair and are longitudinally symmetrically located on both sides of the strip groove. Each set of feeding components includes:

[0009] A plurality of first rollers are axially and vertically rotatably connected to the fixed plate, and one of the first rollers is driven to rotate;

[0010] A first conveyor belt is wound around the outer sides of the plurality of first rollers;

[0011] A plurality of support seats are rotatably mounted on the first conveyor belt at intervals;

[0012] Among them, multiple ball cores enter in sequence, and a pair of first conveyor belts rotate in opposite directions at the same speed, so that the longitudinally adjacent support seats can dock with the through holes of the ball cores and convey the ball cores to the platform to be transferred;

[0013] The material shifting assembly is located below the fixed plate and includes:

[0014] The material shifting block is driven to move in the strip groove;

[0015] When the material shifting block moves, the material shifting block can elastically contact with the peripheral side of the ball core and drive the ball core to rotate, or not contact the valve stem hole passing through the ball core.

[0016] In some examples of the present invention, a pair of first conveyor belts are parallel to each other near the platform to be rotated to form a first channel, and away from the platform to be rotated to form a second channel with a cone angle structure.

[0017] In some examples of the present invention, the material shifting assembly further includes:

[0018] at least two second rollers are located below the fixed plate, and one of the second rollers is driven to rotate;

[0019] The second conveyor belt is wound around the outside of the second roller;

[0020] A plurality of material-shifting blocks are spaced apart on the second conveyor belt.

[0021] In some examples of the present invention, a limiting plate is provided on the side of the platform to be rotated away from the fixed plate, and a receiving plate and a positioning plate are provided in the middle;

[0022] A stop plate configured to block the ball core laterally;

[0023] A receiving plate, the upper portion of which matches and receives the circumference of the core;

[0024] The positioning plate is arranged laterally and can be embedded in the valve stem hole of the ball core.

[0025] In some examples of the present invention, the shafts of the longitudinally adjacent first rollers rotate at the same speed and in opposite directions through a pair of gear assemblies;

[0026] Each gear assembly includes a first gear and a second gear, the first gear is coaxially fixedly connected to one of the first rollers, and the second gear is rotatably mounted on a fixed plate;

[0027] The second gears adjacent to each other in the longitudinal direction are meshed and connected with each other; and one of the gear assemblies is connected with the driving member.

[0028] The present invention also aims to provide a ball core and valve body assembly device with a simple and compact overall structure, which can clamp, flip, release and press down the ball core to complete the assembly between the ball core, valve body and valve stem, avoiding manual operation.

[0029] A ball core and valve body assembly device, comprising:

[0030] The above-mentioned ball core feeding mechanism;

[0031] The support turntable is provided with a fixed support receiving the valve body;

[0032] Transfer institutions, including:

[0033] A plurality of clamping plates are mounted on the second arm and driven to move toward and away from each other;

[0034] A second arm, one end of which is mounted on the support shaft;

[0035] The support shaft is driven to rotate in an upward vertical direction to a horizontal direction; when the support shaft rotates, a plurality of clamping plates move between the fixed support and the platform to be rotated;

[0036] The lower pressure plate is located above the fixed support and is driven to move up and down to contact the ball core.

[0037] In some examples of the present invention, the transfer mechanism further comprises:

[0038] A slider is driven to slide up and down and is mounted on the second support plate;

[0039] A first support arm, one end of which is fixedly connected to the slider and the other end of which is extended and rotatably connected to the support shaft;

[0040] The third support plate is fixedly connected to the second support plate and is provided with a quarter-circular guide groove;

[0041] One end of the support shaft is fixedly connected to the third arm, and the other end of the third arm is slidably located in the guide groove.

[0042] In some examples of the present invention, the second support plate is slidably mounted up and down on the first support plate, and the first support plate is fixed on the support platform;

[0043] The transfer mechanism also includes:

[0044] A pressing assembly having an elastic member;

[0045] The elastic member is located between the second support plate and the support platform, so that the second support plate is subjected to an upward elastic force and is located at a higher position relative to the first support plate.

[0046] In some examples of the present invention, the pressing assembly further comprises a sleeve and a limiting rod;

[0047] A sleeve is located between the supporting platform and the second supporting plate;

[0048] A limit rod, fixedly connected to the support platform, with an upper end passing through the second support plate and threaded with a second nut;

[0049] The elastic member is sleeved on the sleeve, the upper end of the elastic member contacts the second support plate, and the lower end contacts the first nut, and the first nut is threadedly mounted on the sleeve.

[0050] A method for assembling a ball core and a valve body, specifically comprising the following steps:

[0051] S1, a pair of first conveyor belts rotate in opposite directions at the same speed, the through-hole axes of a plurality of ball cores are arranged longitudinally and enter between the pair of first conveyor belts in sequence, and the longitudinally adjacent support seats on the pair of first conveyor belts clamp the through-holes of the ball cores and transport them transversely;

[0052] During the conveying process, the material shifting block moves in the strip groove; when the valve stem hole of the ball core is not arranged downward, the material shifting block can elastically contact with the surface of the ball core to shift the material, so that the ball core rotates on the support seat until the valve stem hole of the ball core smoothly passes through the material shifting block downward; when the valve stem hole of the ball core is arranged downward, the material shifting block can pass through the valve stem hole of the ball core without contact, and does not affect the material shifting block for other ball cores;

[0053] After the conveyed ball core is calibrated by the material, the ball core is transported horizontally to the platform to be transferred;

[0054] S2, the support turntable rotates, and the valve body on which the valve stem is assembled is rotated to the assembly station;

[0055] The second cylinder drives the slider to move upward, and drives the support shaft to move upward through the first arm. The other end of the support shaft slides in the guide groove through the third arm, so that the support shaft rotates 90° clockwise during the movement, and the second arm fixed to the support shaft flips from a horizontal position to a vertical position. A pair of clamping plates are longitudinally located on both sides of the ball core through hole on the platform to be rotated, and clamp the end side of the ball core;

[0056] S3, after the end side of the ball core is clamped, the slider moves downward, and the support shaft rotates 90° counterclockwise during the movement, and the second arm fixed to the support shaft flips from a vertical position to a horizontal position, the ball core is located on the valve body to be assembled, and the radial arrangement of the valve stem hole on the ball core matches the valve stem;

[0057] Then the clamping plate loosens the ball core, and the lower pressure plate moves downward to push the ball core into the valve body, and the valve stem hole matches the valve stem;

[0058] S4, while the ball core is assembled with the valve body, the next ball core is transported horizontally to the platform to be transferred and assembled;

[0059] The support turntable continues to rotate, transferring the assembled valve body, and at the same time rotating the next valve body with the valve stem assembled to the assembly station;

[0060] The second arm continues to flip from a horizontal position to a vertical position, and a pair of clamping plates clamp the end side of the ball core;

[0061] After that, the second arm flips from the vertical position to the horizontal position, a pair of clamping plates release the end side of the ball core, and the lower pressure plate moves downward to push the ball core into the valve body, and the valve stem hole matches the valve stem;

[0062] Repeat the assembly between the ball core and the valve body in sequence.

[0063] Compared with the prior art, the ball core feeding mechanism of the present invention clamps and laterally conveys the ball cores that enter in sequence through the feeding assembly, and the material shifting assembly shifts the ball cores, so that the ball cores are rotated and calibrated on the first conveyor belt, and the valve stem holes on the ball cores are arranged downward, so that the ball cores are uniformly arranged at a specific angle, which is convenient for the next process to assemble the ball cores and avoids damage to the ball cores during the feeding process; in addition, a pair of first conveyor belts form mutually parallel first channels and a second channel with a conical angle structure, which can gradually clamp the ball cores and achieve the effect of preliminary alignment, avoid misalignment between the ball cores and the support seat, and ensure the stability of the lateral conveying of the ball cores;

[0064] A ball core and valve body assembly device turns over the ball core under the action of a transfer mechanism, and the ball core valve stem hole calibrated by the ball core feeding mechanism faces downward. After rotation, the ball core valve stem hole faces outward, and can match the valve stem. The overall structure is simple and compact, and the ball core is clamped, turned over, loosened, and pressed down to complete the assembly between the ball core, the valve body, and the valve stem, avoiding manual operation; in addition, the rotating disk is supported to rotate, and the fixed support for receiving the valve body can pass through multiple workstations in sequence, which is convenient for realizing the unified operation of other workstations;

[0065] Since the second support plate is slidably mounted on the first support plate, and an elastic member is provided between the second support plate and the support platform, when the second support arm is flipped 90° to a horizontal position, the third support arm is located at the bottom of the guide groove and cannot move and is limited, and the slider can drive the second support plate to move downward on the first support plate, so that the ball core can be flipped 90° and assembled and then moved vertically, so that the ball core and the valve body can be better connected, and the problem of mutual collision and damage can be avoided;

[0066] In addition, the elastic part is sleeved on the upper and lower ends of the sleeve and contacts with the first nut. The upper end of the limiting rod passes through the second support plate and is threaded with the second nut. By adjusting the position of the first nut on the sleeve, the elastic force of the elastic part can be adjusted to suit different usage environments. By adjusting the position of the second nut on the limiting rod, the second support arm can be flipped 90° from horizontal to vertical and then continue to move upward a certain distance to facilitate the clamping plate to act on the two end sides of the ball core. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a schematic diagram of a ball core feeding mechanism of the present invention;

[0068] Figure 2 It is a top view of a ball core feeding mechanism of the present invention;

[0069] Figure 3 It is a bottom view of a ball core feeding mechanism of the present invention;

[0070] Figure 4 It is a schematic diagram of a material shifting assembly in a ball core feeding mechanism of the present invention;

[0071] Figure 5 It is a schematic diagram of the platform to be transferred in the present invention;

[0072] Figure 6 It is a schematic diagram of a ball core and valve body assembly device of the present invention (the downward pressure cylinder and the downward pressure plate are not shown);

[0073] Figure 7 is a schematic diagram of a ball core and valve body assembly device of the present invention (ignoring the supporting turntable);

[0074] Figure 8 It is a schematic diagram of a transfer mechanism in a ball core and valve body assembly device of the present invention;

[0075] Fig. 9 It is a partial schematic diagram of a transfer mechanism in a ball core and valve body assembly device of the present invention;

[0076] Fig.10 It is a left view of a transfer mechanism in a ball core and valve body assembly device of the present invention;

[0077] Fig.11 It is a front view of a ball core and valve body assembly device of the present invention when a clamping plate grabs the ball core;

[0078] Fig.12 It is a front view of a ball core and valve body assembly device of the present invention when a clamping plate releases the ball core;

[0079] Fig.13 1 is a schematic diagram of the assembled core structure;

[0080] In the figure: 11, valve body, 12, ball core, 13, through hole, 14, valve stem hole;

[0081] 20. Supporting turntable, 21. Fixing support;

[0082] 30. Support platform;

[0083] 400, transfer mechanism, 410, first support plate, 420, second support plate;

[0084] 431, slider, 432, first arm, 433, support shaft, 434, second arm, 435, first cylinder, 436, clamping plate, 437, third arm;

[0085] 440, third support plate, 441, guide groove;

[0086] 451, elastic member, 452, sleeve, 453, first nut;

[0087] 460, a limiting rod, 461, a second nut;

[0088] 470, second cylinder;

[0089] 510, fixed plate, 511, strip groove;

[0090] 520, a platform to be transferred, 521, a limiting plate, 522, a receiving plate, 523, a positioning plate;

[0091] 530, feeding assembly, 531, first roller, 532, first conveyor belt, 533, support seat;

[0092] 540, material shifting assembly, 541, second roller, 542, second conveyor belt, 543, material shifting block;

[0093] 550, gear assembly, 561, first channel, 562, second channel;

[0094] 61. Downward pressure cylinder, 62. Downward pressure plate. DETAILED DESCRIPTION

[0095] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0096] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0097] like Figure 1 , Figure 2 , Figure 3 As shown, the ball core feeding mechanism includes:

[0098] The fixing plate 510 has a strip groove 511 arranged transversely in the middle;

[0099] The waiting platform 520 is located at a lateral side of the strip groove 511 and is configured to receive the calibrated ball core 12;

[0100] The feeding components 530 are a pair and are longitudinally symmetrically located on both sides of the strip groove 511. Each set of feeding components 530 includes:

[0101] A plurality of first rollers 531 are axially and vertically rotatably connected to the fixed plate 510, and one of the first rollers 531 is driven to rotate;

[0102] The first conveyor belt 532 is wound around the outer sides of the plurality of first rollers 531;

[0103] A plurality of support seats 533 are rotatably mounted on the first conveyor belt 532 at intervals;

[0104] The plurality of ball cores 12 enter in sequence, and a pair of first conveyor belts 532 rotate in opposite directions at the same speed, so that the longitudinally adjacent support seats 533 can dock with the through holes 13 of the ball cores 12, and convey the ball cores 12 to the waiting platform 520;

[0105] The material shifting assembly 540 is located below the fixing plate 510 and includes:

[0106] The material shifting block 543 is driven to move in the strip groove 511;

[0107] When the material shifting block 543 moves, the material shifting block 543 can elastically contact the circumference of the ball core 12 and drive the ball core 12 to rotate, or not contact the valve stem hole 14 passing through the ball core 12;

[0108] Specifically, the fixed plate 510 is the main support member of the ball core feeding mechanism, and the whole plate can be horizontal or slightly tilted. When tilted, one end of the rotating platform 520 faces downward. The strip groove 511 on the fixed plate 510 is used for the material shifting block 543 to move.

[0109] A plurality of first rollers 531 in the feeding assembly 530 are rotatably mounted on the fixed plate 510 according to the use conditions, wherein one of the first rollers 531 is driven to rotate so as to rotate the first conveyor belt 532 arranged around the outer side thereof; the first conveyor belt 532 is configured to convey the ball cores 12 entering in sequence in a transverse manner; a plurality of support seats 533 arranged evenly at intervals are arranged on the first conveyor belt 532, and the support seat 533 can be composed of a support shaft and a seat body, that is, one end of the support shaft is fixedly mounted on the first conveyor belt 532, and the other end is rotatably mounted with the seat body, and it is explained that this rotation is slightly damped to avoid the inertia of the seat body rotating too large an angle when the material shifting block 543 contacts the ball core 12 to rotate for shifting, and the valve stem hole 14 on the ball core 12 cannot face downward;

[0110] The material shifting assembly 540 is configured to calibrate the ball core 12 on the first conveyor belt 532 so that its valve stem hole 14 faces downward;

[0111] When the ball core feeding mechanism is in use, the pair of first conveyor belts 532 rotate in opposite directions at the same speed, and a plurality of ball cores 12 enter between the pair of first conveyor belts 532 in sequence and are laterally transported by the pair of first conveyor belts 532; the ball cores 12 enter in sequence means that the axis of the through hole 13 of the ball core 12 is arranged longitudinally and matches the speed of the first conveyor belt 532, so that the longitudinally adjacent support seats 533 on the first conveyor belt 532 can be inserted into the through hole 13 of the ball core 12, that is, the support seats 533 clamp the ball core 12 and then move laterally;

[0112] As an embodiment of the ball core 12 entering sequentially, an adjustment mechanism can be added before the ball core feeding mechanism, the adjustment mechanism includes a slightly inclined bottom plate, a pair of longitudinally arranged baffles, the distance between the baffles is greater than the distance between the two end sides of the through hole 13 of the ball core 12, and smaller than the diameter of the ball core 12, so that the ball core 12 can roll between the pair of baffles, and an electrically controlled opening and closing door is provided at one end of the bottom plate close to the ball core feeding mechanism, the opening and closing door is opened sequentially, and the ball core 12 enters between the pair of conveyor belts sequentially;

[0113] like Figure 1 , Figure 2As shown, when the ball core 12 enters in sequence, the support seats 533 arranged longitudinally on the pair of first conveyor belts 532 clamp the through hole 13 of the ball core 12 and convey it horizontally; during the conveying process, the material shifting block 543 moves in the strip groove 511. Since the ball core 12 is rotatably mounted on the support seat 533 and the material shifting block 543 can not contact the valve stem hole 14 of the ball core 12, when the valve stem hole 14 of the ball core 12 is not arranged downward, the material shifting block 543 moves in the strip groove 511. 43 can elastically contact with the surface of the ball core 12 to shift the material, so that the ball core 12 rotates on the support seat 533 until the valve stem hole 14 of the ball core 12 smoothly passes through the shifting block 543 downward. When the valve stem hole 14 of the ball core 12 is arranged downward, the shifting block 543 does not contact with the surface of the ball core 12, that is, the shifting block 543 can pass through the valve stem hole 14 of the ball core 12 without contact, and does not affect the shifting block 543 shifting the material of other ball cores 12;

[0114] Preferably, the material-shifting block 543 is an elastic structure, which may be a semicircular convex point structure or a wedge-shaped structure with an inclined upper end surface; the highest point of the material-shifting block 543 can contact the surface of the ball core 12 and be embedded in the valve stem hole 14; in addition, there is a speed difference between the movement of the material-shifting block 543 and the conveying of the ball core 12;

[0115] After the conveyed ball core 12 is calibrated (with the valve stem hole 14 facing downward), it is laterally conveyed to the waiting platform 520 to wait for the next process;

[0116] The ball core feeding mechanism of the present invention clamps and laterally conveys the ball cores 12 that enter in sequence through the feeding assembly 530, and the material shifting assembly 540 shifts the ball core 12, so that the ball core 12 is rotated and calibrated on the first conveyor belt 532, and the valve stem hole 14 on the ball core 12 is arranged downward, so that the ball core 12 is uniformly arranged at a specific angle, which is convenient for the next process to assemble the ball core 12 and avoid damage to the ball core 12.

[0117] In some examples of the present invention, Figure 2 As shown, a pair of first conveyor belts 532 are parallel to each other near the platform 520 to be rotated to form a first channel 561, and away from the platform 520 to be rotated to form a second channel 562 with a cone angle structure;

[0118] Specifically, there may be three first rollers 531 in each set of feeding components 530, two of which are arranged transversely, and the other one is longitudinally biased toward one of the first rollers 531, the first conveyor belt 532 is wound around the outside of the three first rollers 531, and a first channel 561 and a second channel 562 are formed between a pair of first conveyor belts 532;

[0119] The second channel 562 facilitates the entry of the ball core 12 in sequence, and gradually clamps the ball core 12 through the support seat 533 to achieve a preliminary alignment effect, thereby avoiding misalignment between the ball core 12 and the support seat 533; the longitudinal distance of the first channel 561 is slightly larger than the distance between the two ends of the through hole 13 on the ball core 12, which can drive the ball core 12 to be clamped and transported horizontally.

[0120] In some examples of the present invention, Figure 3 , Figure 4 As shown, the material shifting assembly 540 also includes:

[0121] At least two second rollers 541 are located below the fixed plate 510, and one of the second rollers 541 is driven to rotate;

[0122] The second conveyor belt 542 is wound around the outer side of the second roller 541;

[0123] A plurality of material shifting blocks 543 are spaced apart and arranged on the second conveyor belt 542;

[0124] Specifically, when there are two second rollers 541, they are arranged horizontally. When there are multiple second rollers 541, the other second rollers 541 are used for tensioning. One of the second rollers 541 is connected to the driving motor. When the driving motor rotates, it drives the second conveyor belt 542 to rotate, so that the material-shifting blocks 543 on the second conveyor belt 542 continuously act on different ball cores 12.

[0125] When the material-pickup block 543 is a wedge-shaped structure with an inclined upper end surface, in order to avoid the influence of the second conveyor belt 542 on the material-pickup block 543 during the winding process, the lower inclined end of the material-pickup block 543 is rotatably connected to the second conveyor belt 542 through a small-sized ear seat, and the rotation direction of the second conveyor belt 542 matches the wedge-shaped structure of the material-pickup block 543, so that when the second conveyor belt 542 drives the material-pickup block 543 to rotate to the upper position, the material-pickup block 543 can automatically rotate and fit on the second conveyor belt 542;

[0126] In addition, the material shifting block 543 can also move back and forth in the strip-shaped groove 511 . For example, a rack is provided on the material shifting block 543 , and a gear meshing with the rack is provided under the fixing plate 510 .

[0127] In some examples of the present invention, Figure 5 As shown, the platform 520 to be rotated is provided with a limiting plate 521 on one side away from the fixed plate 510, and a receiving plate 522 and a positioning plate 523 in the middle;

[0128] The limiting plate 521 is configured to block the core 12 laterally;

[0129] The receiving plate 522 has an upper portion that matches and receives the circumference of the core 12;

[0130] A positioning plate 523, arranged transversely and capable of being embedded in the valve stem hole 14 of the ball core 12;

[0131] Specifically, the transfer platform 520 is used to receive the calibrated ball core 12 to facilitate the next process.

[0132] In some examples of the present invention, the shafts of the longitudinally adjacent first rollers 531 rotate in opposite directions at the same speed through the gear assembly 540;

[0133] The gear assembly 540 is connected to the driving member;

[0134] Specifically, the driving member may be a servo motor;

[0135] The gear assembly 540 may be a pair, each set of the gear assembly 540 includes a first gear and a second gear, the first gear is coaxially fixedly connected to one of the first rollers 531, and the second gear is rotatably mounted on the fixed plate 510; the second gears adjacent to each other in the longitudinal direction are meshed and connected with each other;

[0136] The first gear or the second gear is driven to rotate by the servo motor, so the gear assembly 540 realizes the same-speed and opposite rotation of a pair of first conveyor belts 532, ensuring that the support seats 533 on the pair of first conveyor belts 532 can clamp and transport the adjacent pairs of ball cores 12 longitudinally.

[0137] like Figures 6 to 9 , Fig.11 , Fig.12 As shown, a ball core and valve body assembly device includes:

[0138] The above-mentioned ball core feeding mechanism;

[0139] The support turntable 20 is provided with a fixed support 21 receiving the valve body 11;

[0140] The transfer mechanism 400 comprises:

[0141] A plurality of clamping plates 436 are mounted on the second arm 434 and driven to move toward and away from each other;

[0142] A second arm 434, one end of which is mounted on the support shaft 433;

[0143] The support shaft 433 is driven to rotate in an upward vertical direction to a horizontal direction;

[0144] When the support shaft 433 rotates, the plurality of clamping plates 436 move between the fixed support 21 and the platform to be rotated 520;

[0145] The lower pressing plate 62 is located above the fixed support 21 and is driven to move up and down so as to contact the ball core 12;

[0146] Specifically, the support turntable 20 is driven to rotate, and there can be multiple fixed supports 21 thereon, which are used to support the corresponding valve body 11 and perform different process processing. Preferably, there are six fixed supports 21, which are evenly arranged. Correspondingly, six stations are provided on one side of the support turntable 20, including a station for placing the valve body 11, a seal assembly station, a valve stem assembly station, a ball core 12 assembly station, a valve cap assembly station, and a ball valve discharge station after assembly. A card slot is provided on the fixed support 21, so that the valve body 11 faces a certain direction, that is, the valve stem is radially arranged and away from the axis of the support turntable 20;

[0147] The transfer mechanism 400 is configured to transfer the ball core 12 placed at a certain angle on the platform to be transferred 520 to the fixed support 21 and can match the valve stem placed radially outward; as an embodiment of the transfer mechanism 400, the transfer mechanism 400 is a mechanical arm; the clamping plate 436 is used to grab and release the ball core 12, preferably, a pair of clamping plates 436 are arranged longitudinally and installed on the first double-output cylinder 435;

[0148] The pressing plate 62 is located above the fixed support 21 at the assembly station of the ball core 12 and is installed at the lower end of the pressing cylinder 61. The pressing plate 62 is moved up and down by the pressing cylinder 61, that is, used to press the placed ball core 12 down into the valve body 11.

[0149] The support shaft 433 can be connected to a servo motor, and the position sensor senses the ball core 12 and the fixed support 21, and the controller controls the servo motor to drive the support shaft 433 to rotate;

[0150] When the ball core and valve body assembly device is in use, Fig.11 , Fig.12 As shown, a ball core feeding mechanism feeds the ball core 12, and makes the valve stem hole 14 of the ball core 12 face downward and be located on the waiting platform 520 for waiting to be rotated;

[0151] The transfer mechanism 400 is actuated, i.e., the support shaft 433 rotates, driving the second support arm 434 to flip to a vertical position. At this time, a pair of clamping plates 436 are longitudinally located on both sides of the through hole 13 of the ball core 12 on the platform to be rotated 520. The first cylinder 435 is started to drive the clamping plates 436 to clamp the through hole 13 end side of the ball core 12. The support shaft 433 then rotates, driving the second support arm 434 to flip to a horizontal position, i.e., the ball core 12 is located on the valve body 11 of the fixed support 21, and the valve stem hole 14 on the ball core 12 matches the valve stem. The clamping plate 436 then loosens the ball core 12, and then the downward pressure cylinder 61 drives the downward pressure plate 62 to move downward, pushing the ball core 12 into the valve body 11, and the valve stem hole 14 matches the valve stem.

[0152] During the operation of the transfer mechanism 400, the ball core 12 is flipped, and the valve stem hole 14 of the ball core 12 located on the platform to be rotated 520 faces downward. After rotation, the valve stem hole 14 of the ball core 12 faces radially outward, that is, away from the axis of the supporting turntable 20, and can be matched with the valve stem. The ball core and valve body assembly device has a simple and compact structure, and the ball core 12 is clamped, flipped, released, and pressed down to complete the assembly of the ball core 12, the valve body 11, and the valve stem.

[0153] In some examples of the present invention, Figures 8 to 10 As shown, the transfer mechanism 400 further includes:

[0154] The slider 431 is driven to slide up and down and is installed on the second support plate 420;

[0155] A first arm 432, one end of which is fixedly connected to the slider 431, and the other end of which is extended and rotatably connected to the support shaft 433;

[0156] The third support plate 440 is fixedly connected to the second support plate 420 and is provided with a quarter-circular guide groove 441;

[0157] One end of the support shaft 433 is fixedly connected to the third support arm 437, and the other end of the third support arm 437 is slidably located in the guide groove 441;

[0158] Specifically, the slider 431 is slidably connected to the second support plate 420 through the first linear slide rail, and the telescopic end of the second cylinder 470 fixed on the support platform 30 is connected to the slider 431;

[0159] The third support plate 440 is fixedly arranged according to Fig.11 , Fig.12 As shown, the guide groove 441 on the third support plate 440 is located in the third quadrant;

[0160] In this example, the slider 431 moves up and down, driving the support shaft 433 to move up and down through the first arm 432, and the other end of the support shaft 433 slides through the third arm 437 and is located in the guide groove 441, so that the support shaft 433 flips 90° during the movement, and the second arm 434 fixedly connected to the support shaft 433 also flips 90°, that is, when the other end of the third arm 437 is located at the uppermost end of the guide groove 441, the support shaft 433 drives the second arm 434 to flip to a vertical position, and when the other end of the third arm 437 is located at the lowermost end of the guide groove 441, the support shaft 433 drives the second arm 434 to flip to a horizontal position, and the transfer of the ball core 12 between the platform 520 to be rotated and the fixed support 21 is completed by flipping the support shaft 433 and the second arm 434 by 90°.

[0161] In some examples of the present invention, Figures 8 to 12As shown, the second support plate 420 is slidably mounted on the first support plate 410, and the first support plate 410 is fixed on the support platform 30;

[0162] The transfer mechanism 400 further includes:

[0163] A pressing assembly having an elastic member 451;

[0164] The elastic member 451 is located between the second support plate 420 and the support platform 30, so that the second support plate 420 is subjected to an upward elastic force and is located at a higher position relative to the first support plate 410;

[0165] Specifically, when the second arm 434 is flipped 90° from vertical to horizontal, the ball core 12 contacts the valve body 11 on the fixed support 21. Since the moving track of the second arm 434 is an arc, when the ball core 12 contacts the valve body 11, it is easy to cause incomplete docking and mutual collision damage.

[0166] In this example, the second support plate 420 is slidably located on the first support plate 410 through the second linear slide rail; when the second support arm 434 flips 90° to a horizontal position, the third support arm 437 is located at the bottom of the guide groove 441 and cannot move and is limited, and there is a certain height between the ball core 12 and the valve body 11. Then the second cylinder 470 continues to drive the slider 431 to move downward. Due to the limitation of the third support arm 437 in the guide groove 441, the second support plate 420 moves downward on the first support plate 410, that is, the first support plate 410, the slider 431 thereon, the first support arm 432 on the slider 431, and the support shaft 433 connected to the first support arm 432 all move downward to compress the elastic member 451;

[0167] During the downward movement, the second support arm 434 can elastically place the ball core 12 vertically on the valve body 11 to avoid collision and damage; when the ball core 12 is placed, the second cylinder 470 drives the slider 431 to move upward, and under the action of the elastic member 451, the second support plate 420 moves upward on the first support plate 410, that is, the second support arm 434 first moves upward and then flips from a horizontal position to a vertical position.

[0168] In some examples of the present invention, Figure 8 , Figures 10 to 12 As shown, the pressing assembly further comprises a sleeve 452 and a limiting rod 460;

[0169] The sleeve 452 is located between the support platform 30 and the second support plate 420;

[0170] A limiting rod 460 is fixedly connected to the supporting platform 30, the upper end of which passes through the second supporting plate 420 and is threaded with a second nut 461;

[0171] The elastic member 451 is sleeved on the sleeve 452, with the upper end in contact with the second support plate 420 and the lower end in contact with the first nut 453, and the first nut 453 is threadedly mounted on the sleeve 452;

[0172] Specifically, the elastic member 451 may be a cylindrical spring; the lower end of the sleeve 452 is fixed to the support platform 30 through a flange structure;

[0173] By rotating the first nut 453 and adjusting the position of the first nut 453 on the sleeve 452 , the elastic force of the elastic member 451 can be adjusted to be suitable for different use environments;

[0174] The lower end of the limiting rod 460 is fixed on the supporting platform 30, and the upper end passes through the second support plate 420. The second nut 461 is threadedly installed on the limiting rod 460 to limit the second support plate 420, that is, to adjust the position of the second nut 461. When the second cylinder 470 drives the slider 431 to move upward, the second support arm 434 rotates from the horizontal to the vertical position, and the third support arm 437 is limited at the highest point of the guide groove 441. At this time, the second cylinder 470 can continue to drive the second support plate 420 to move upward for a certain distance, and limit it through the second nut 461, so that the second support arm 434 is turned upward and then moves vertically, which is convenient for the clamping plate 436 to take the ball core 12;

[0175] In this example, by adjusting the position of the second nut 461 on the limiting rod 460, the second arm 434 can be flipped from horizontal to vertical by 90° and then moved upward for a certain distance, so as to facilitate the clamping plate 436 to act on both ends of the through hole 13 of the ball core 12;

[0176] A method for assembling a ball core and a valve body 11, specifically comprising the following steps:

[0177] S1, a pair of first conveyor belts 532 rotate in opposite directions at the same speed, the through holes 13 of a plurality of ball cores 12 are arranged longitudinally and enter between the pair of first conveyor belts 532 in sequence, and the longitudinally adjacent support seats 533 on the pair of first conveyor belts 532 clamp the through holes 13 of the ball cores 12 and convey them horizontally;

[0178] During the conveying process, the material shifting block 543 moves in the strip groove 511; when the valve stem hole 14 of the ball core 12 is not arranged downward, the material shifting block 543 can elastically contact with the surface of the ball core 12 to shift the material, so that the ball core 12 rotates on the support seat 533 until the valve stem hole 14 of the ball core 12 smoothly passes through the material shifting block 543 downward; when the valve stem hole 14 of the ball core 12 is arranged downward, the material shifting block 543 can pass through the valve stem hole 14 of the ball core 12 without contact, and does not affect the material shifting block 543 to shift other ball cores 12;

[0179] After the conveyed ball core 12 is calibrated, the ball core 12 is laterally conveyed to the waiting platform 520 to wait for the next process;

[0180] S2, the support turntable 20 rotates, and the valve body 11 on which the valve stem is assembled is rotated to the assembly station;

[0181] The second cylinder 470 drives the slider 431 to move upward, and drives the support shaft 433 to move upward through the first arm 432. The other end of the support shaft 433 slides in the guide groove 441 through the third arm 437, so that the support shaft 433 rotates 90° clockwise during the movement. The second arm 434 fixed to the support shaft 433 flips from a horizontal position to a vertical position. A pair of clamping plates 436 are longitudinally located on both sides of the through hole 13 of the ball core 12 on the platform to be rotated 520, and clamp the through hole 13 end side of the ball core 12.

[0182] S3, after the end side of the through hole 13 of the ball core 12 is clamped, the slider 431 moves downward, the support shaft 433 rotates 90° counterclockwise during the movement, and the second arm 434 fixed to the support shaft 433 flips from a vertical position to a horizontal position, the ball core 12 is located on the valve body 11 to be assembled, and the valve stem hole 14 on the ball core 12 is radially arranged to match the valve stem;

[0183] Then the clamping plate 436 loosens the ball core 12, and the lower pressing plate 62 moves downward to push the ball core 12 into the valve body 11, and the valve stem hole 14 matches the valve stem;

[0184] S4, while the ball core 12 is assembled with the valve body 11, the next ball core 12 is transported horizontally to the waiting platform 520 to wait for transfer assembly;

[0185] The support turntable 20 continues to rotate, transferring the assembled valve body 11, and at the same time rotating the next valve body 11 with the valve stem assembled to the assembly station;

[0186] The second arm 434 continues to flip from the horizontal position to the vertical position, and a pair of clamping plates 436 clamp the end side of the ball core 12;

[0187] After that, the second arm 434 is flipped from the vertical position to the horizontal position, the pair of clamping plates 436 release the end side of the ball core 12, and the lower pressing plate 62 moves downward to push the ball core 12 into the valve body 11, and the valve stem hole 14 is matched with the valve stem;

[0188] The assembly between the ball core 12 and the valve body 11 is repeated sequentially.

[0189] An exemplary implementation of a ball core feeding mechanism proposed in the present invention is described in detail above with reference to a preferred embodiment. However, those skilled in the art will appreciate that, without departing from the concept of the present invention, various modifications and variations may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention may be combined in various ways without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. A ball core feeding mechanism, characterized in that: include: A fixed plate (510) having a strip groove (511) arranged transversely in the middle; The waiting platform (520) is located on a lateral side of the strip groove (511) and is configured to receive the calibrated ball core (12); The feeding components (530) are a pair and are longitudinally symmetrically located on both sides of the strip groove (511). Each set of feeding components (530) includes: A plurality of first rollers (531) are axially and vertically rotatably connected to the fixed plate (510), and one of the first rollers (531) is driven to rotate; A first conveyor belt (532) is wound around the outer sides of the plurality of first rollers (531); A plurality of support seats (533) are rotatably mounted on the first conveyor belt (532) at intervals; Wherein, a plurality of ball cores (12) enter in sequence, and a pair of first conveyor belts (532) rotate in opposite directions at the same speed, so that the longitudinally adjacent support seats (533) can dock with the through holes (13) of the ball cores (12), and convey the ball cores (12) to the platform (520) to be transferred; The material shifting assembly (540) is located below the fixing plate (510) and comprises: The material shifting block (543) is driven to move in the strip groove (511); When the material shifting block (543) moves, the material shifting block (543) can elastically contact the circumference of the ball core (12) and drive the ball core (12) to rotate, or not contact the valve stem hole (14) passing through the ball core (12).

2. A ball core feeding mechanism according to claim 1, characterized in that: A pair of first conveyor belts (532) are parallel to each other near the platform to be rotated (520) to form a first channel (561), and away from the platform to be rotated (520) to form a second channel (562) with a cone angle structure.

3. A ball core feeding mechanism according to claim 1, characterized in that: The material shifting assembly (540) further includes: At least two second rollers (541) are located below the fixed plate (510), wherein one of the second rollers (541) is driven to rotate; A second conveyor belt (542) is wound around the outside of the second roller (541); A plurality of material shifting blocks (543) are spaced apart on the second conveyor belt (542).

4. A ball core feeding mechanism according to any one of claims 1 to 3, characterized in that: The platform to be rotated (520) is provided with a limiting plate (521) on one side away from the fixed plate (510), and a receiving plate (522) and a positioning plate (523) in the middle; A limiting plate (521) configured to block the ball core (12) laterally; A receiving plate (522), the upper portion of which matches and receives the circumference of the ball core (12); The positioning plate (523) is arranged transversely and can be embedded in the valve stem hole (14) of the ball core (12).

5. A ball core feeding mechanism according to any one of claims 1 to 3, characterized in that: The shafts of the longitudinally adjacent first rollers (531) rotate in opposite directions at the same speed via a pair of gear assemblies (550); Each set of gear assemblies (550) comprises a first gear and a second gear, the first gear being coaxially fixedly connected to one of the first rollers (531), and the second gear being rotatably mounted on the fixed plate (510); The second gears adjacent to each other in the longitudinal direction are meshed and connected with each other; and one of the gear assemblies (550) is connected to the driving member.

6. A ball core and valve body assembly device, characterized in that: include: The ball core feeding mechanism according to claim 1; A supporting rotating disk (20) is provided with a fixed support (21) receiving the valve body (11); Transfer institutions (400), including: A plurality of clamping plates (436) are mounted on the second support arm (434) and are driven to move closer to or farther from each other; A second support arm (434), one end of which is mounted on the support shaft (433); The support shaft (433) is driven to rotate in an upward vertical direction to a horizontal direction; when the support shaft (433) rotates, the plurality of clamping plates (436) move between the fixed support (21) and the platform to be rotated (520); The lower pressing plate (62) is located above the fixed support (21) and is driven to move up and down so as to contact the ball core (12).

7. A ball core and valve body assembly device according to claim 6, characterized in that: The transfer mechanism (400) further includes: A slider (431) is driven to slide up and down and is mounted on the second support plate (420); A first support arm (432), one end of which is fixedly connected to the slider (431) and the other end of which is extended and rotatably connected to the support shaft (433); A third support plate (440) is fixedly connected to the second support plate (420) and is provided with a quarter-circular guide groove (441); One end of the support shaft (433) is fixedly connected to the third support arm (437), and the other end of the third support arm (437) is slidably located in the guide groove (441).

8. The ball core and valve body assembly device according to claim 7, characterized in that: The second support plate (420) is slidably mounted on the first support plate (410), and the first support plate (410) is fixed on the support platform (30); The transfer mechanism (400) further includes: A pressing assembly having an elastic member (451); The elastic member (451) is located between the second support plate (420) and the support platform (30), so that the second support plate (420) is subjected to an upward elastic force and is located at a higher position relative to the first support plate (410).

9. The ball core and valve body assembly device according to claim 8, characterized in that: The pressing assembly further comprises a sleeve (452) and a limiting rod (460); A sleeve (452) is located between the support platform (30) and the second support plate (420); A limiting rod (460) is fixedly connected to the supporting platform (30), the upper end of which passes through the second supporting plate (420) and is threaded with a second nut (461); The elastic member (451) is sleeved on the sleeve (452), with its upper end in contact with the second support plate (420) and its lower end in contact with the first nut (453), and the first nut (453) is threadedly mounted on the sleeve (452).

10. An assembly method of the ball core and valve body assembly device according to claim 7, characterized in that: The specific steps include: S1, a pair of first conveyor belts (532) rotate in opposite directions at the same speed, the through holes (13) of the plurality of ball cores (12) are arranged longitudinally along their axes and sequentially enter between the pair of first conveyor belts (532), and the longitudinally adjacent support seats (533) on the pair of first conveyor belts (532) clamp the through holes (13) of the ball cores (12) and transport them transversely; During the conveying process, the material shifting block (543) moves in the strip groove (511); when the valve stem hole (14) of the ball core (12) is not arranged downward, the material shifting block (543) can elastically contact with the surface of the ball core (12) to shift the material, so that the ball core (12) rotates on the support seat (533) until the valve stem hole (14) of the ball core (12) smoothly passes through the material shifting block (543) downward; when the valve stem hole (14) of the ball core (12) is arranged downward, the material shifting block (543) can pass through the valve stem hole (14) of the ball core (12) without contact, without affecting the material shifting block (543) for other ball cores (12); After the conveyed ball core (12) is calibrated by the material selection, the ball core (12) is conveyed laterally to the waiting platform (520); S2, the supporting turntable (20) is rotated to rotate the valve body (11) on which the valve stem is assembled to an assembly station; The second cylinder (470) drives the slider (431) to move upward, and drives the support shaft (433) to move upward through the first support arm (432), and the other end of the support shaft (433) slides in the guide groove (441) through the third support arm (437), so that the support shaft (433) rotates 90° clockwise during the movement, and the second support arm (434) fixedly connected to the support shaft (433) flips from a horizontal position to a vertical position, and a pair of clamping plates (436) are longitudinally located on both sides of the through hole (13) of the ball core (12) on the platform to be rotated (520) to clamp the end side of the ball core (12); S3, after the end side of the ball core (12) is clamped, the slider (431) moves downward, the support shaft (433) rotates 90° counterclockwise during the movement, the second arm (434) fixed to the support shaft (433) flips from a vertical position to a horizontal position, the ball core (12) is located on the valve body (11) to be assembled, and the valve stem hole (14) on the ball core (12) is radially arranged to match the valve stem; Then, the clamping plate (436) loosens the ball core (12), and the lower pressing plate (62) moves downward to push the ball core (12) into the valve body (11), and the valve stem hole (14) is matched with the valve stem; S4, while the ball core (12) and the valve body (11) are being assembled, the next ball core (12) is transported laterally to the waiting platform (520) to wait for transfer and assembly; The support turntable (20) continues to rotate to transfer the assembled valve body (11), and at the same time, rotates the next valve body (11) with the valve stem assembled to the assembly station; The second support arm (434) continues to flip from a horizontal position to a vertical position, and a pair of clamping plates (436) clamp the end side of the ball core (12); Thereafter, the second arm (434) flips from a vertical position to a horizontal position, a pair of clamping plates (436) releases the end side of the ball core (12), and the lower pressing plate (62) moves downward to push the ball core (12) into the valve body (11), and the valve stem hole (14) is matched with the valve stem; Repeat the assembly between the ball core (12) and the valve body (11) in sequence.

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