A mechanism for selecting beads from a non-planar bead array

Abstract

The utility model discloses a kind of non-planar bead selecting and sorting mechanism, including bead selecting and sending structure, the pearl arrangement structure of pearl threading, the pearl arrangement structure including mounting bracket, with the guide bead bar of bead selecting and sending structure cooperation, the clamp of the guide bead bar of clamping positioning layer by layer setting, the first drive structure of driving clamp time-sharing opening, by rotating on the inclined cylinder bottom through selecting and sorting disc, the pearl selecting and sorting hole of accommodating one non-planar bead on selecting and sorting disc with the rotation of selecting and sorting disc, the pearl of screening, directional is transported from the lower portion of inclined cylinder bottom to the pearl drop hole of cylinder bottom upper portion, selecting and sorting disc is equipped with pearl selecting and sorting hole area and vacant area;The rotation of control selecting and sorting disc and the open clamp state linkage of the uppermost layer clamp of pearl arrangement structure;When the uppermost layer clamp of pearl arrangement structure is in non-clamping state, the vacant area of control selecting and sorting disc cooperates with pearl drop hole.The utility model is through the state linkage of selecting and sorting disc and clamp, avoid when the uppermost layer clamp opening pearl falling, ensure guide bead bar stability, effectively prevent pearl threading failure and pearl jumping phenomenon.

Description

Technical Field

[0001] This utility model relates to a bead selection mechanism for non-uniform beads. Background Technology

[0002] In the process of selecting and stringing beads, the orientation and conveying of non-faceted beads are crucial steps. Non-faceted beads typically have one flat bottom and the other side has a specific shape. The flat bottom of the bead must be oriented by a bead selection mechanism and threaded into the bead guide rod to ensure the subsequent embroidery sewing.

[0003] The core component of the existing bead selection mechanism is the bead selection disc, which has bead selection holes evenly distributed around its circumference. After being selected and positioned by these holes, beads from different facets rotate with the disc to the drop hole position and fall. The falling beads need to engage with the guide rod and ultimately pass through it. In actual operation, the drive motor controls the sequential opening and closing of the bead clamping assembly, causing the beads on the guide rod to move downwards layer by layer. However, when a bead already oriented in the selection hole falls from the drop hole, if the uppermost clamp is open, the guide rod loses its necessary upper-end positioning support, and the upper end of the guide rod easily wobbles and disengages from its engagement position with the drop hole. If any of the lower clamps closes to clamp the guide rod at this time, it is even more likely that the upper end of the guide rod will wobble and deviate from its alignment with the drop hole. This deviation makes it difficult for the falling beads to accurately engage with the guide rod, resulting in bead threading failure and subsequently, bead skipping and jamming. This not only affects production efficiency and product consistency but may also lead to bead waste, equipment failure, and increased maintenance costs. Therefore, there is an urgent need for a bead selection mechanism that can stabilize the position of the bead guide rod and prevent bead threading failure, so as to improve bead threading accuracy and production efficiency. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, this utility model provides a bead selection mechanism for opposite-faced beads that can effectively avoid bead threading failure when the top bead clamp is opened, and realize a stable and accurate bead threading process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bead selection mechanism for non-uniform beads includes a bead feeding structure and a bead arranging structure. The bead arranging structure includes a mounting frame, a bead guide rod that cooperates with the bead feeding structure, clamps that clamp and position the guide rods layer by layer, and a first driving structure that drives the clamps to open in a time-sharing manner. The bead feeding structure includes a material cylinder, a bead selection disk rotatably mounted on the bottom of the cylinder, and a bead selection driving structure that drives the bead selection disk to rotate. The bottom of the material cylinder is inclined, and a bead dropping hole is provided on the upper part of the inclined bottom. The periphery of the bead selection disk is provided with bead selection holes that can cooperate with the dropping holes, and each bead selection hole can accommodate one non-uniform bead. The rotating bead selection disk has a bead selection hole area and an empty area at the location where it cooperates with the dropping holes. The rotation position of the bead selection disk is linked to the opening state of the uppermost clamp. When the first driving structure drives the uppermost clamp to be in a non-clamping position of the guide rod, the bead selection driving structure drives the empty area of ​​the bead selection disk to cooperate with the dropping hole. By adopting the above technical solution, the bead selection plate and the clamp are linked to ensure that the bead dropping hole is covered by the empty area when the uppermost clamp is open, thus preventing the bead from falling and preventing the bead threading failure caused by the shaking of the guide rod; at the same time, the linkage control realizes the synchronous coordination of the bead threading process, improving the accuracy and stability of bead threading.

[0006] Preferably, the bead selection drive structure includes a rotating shaft connected to the bead selection disk and disposed on the bottom of the cylinder. A transmission structure is provided between the rotating shaft and the drive motor of the first drive structure. When the drive motor drives the uppermost clamp to a non-clamping position on the bead guide rod, the transmission structure drives the empty area of ​​the bead selection disk to engage with the bead dropping hole. By adopting the above technical solution: the transmission structure directly links the drive motor and the bead selection disk, simplifying the control logic by using only one drive motor; simultaneously, mechanical transmission ensures timely response and enhances system reliability.

[0007] Preferably, the transmission structure includes a first pulley assembly disposed between the rotating shaft and the drive motor, and a retaining structure for maintaining the belt torque of the first pulley assembly. When the drive motor drives the uppermost clamp to open, the first pulley assembly drives the empty area of ​​the bead selection disc to engage with the bead drop hole. By adopting the above technical solution: the belt torque retaining structure ensures smooth transmission and reduces vibration; at the same time, the pulley assembly achieves precise angle transmission, ensuring accurate alignment between the empty area of ​​the bead selection disc and the bead drop hole, further preventing beads from falling accidentally.

[0008] Preferably, a slag discharge hole with an inner diameter smaller than that of the non-concave beads is provided between the lower part of the inclined cylinder bottom and the bead drop hole, located along the rotation path of the bead selection hole. By adopting the above technical solution, the slag discharge hole automatically removes impurities and defective beads, preventing blockage; simultaneously, its optimized position avoids interference with normal bead transport. Furthermore, the conical surface of the beads facing downwards facilitates entry into the slag discharge hole, and the impact with the sidewall of the bead selection hole on the rotating bead selection disc allows them to quickly and effectively exit the slag discharge hole. This increases the probability of directional screening of flat-bottomed beads and further prevents beads with conical surfaces facing downwards from being selected by the bead selection hole.

[0009] Preferably, the material cylinder is equipped with a scraper that cooperates with the bead-selecting disc. The lower part of the inclined cylinder bottom and the corresponding part of the cylinder wall constitute a material placement area. The scraper is positioned at any position along the path of the bead-selecting disc's rotation direction, from the material placement area to the bead drop hole. A spring-loaded plate is provided inside the material cylinder at the bead drop hole to press the beads down. By adopting the above technical solution, the scraper cleans the surface of the bead-selecting disc, ensuring that the beads are arranged in a single layer.

[0010] Preferably, the bead feeding structure has a connecting seat for connecting to the mounting frame on one side. An adjustable slotted hole and connecting bolts are provided between the connecting seat and the mounting frame. An adjusting bolt for adjusting the bead feeding structure is also provided between the connecting seat and the mounting frame. By adopting the above technical solution, the slotted hole and adjusting bolts enable fine-tuning of the position; simultaneously, they facilitate precise alignment of the bead feeding structure and the bead arranging structure, enhancing the equipment's versatility and ease of installation.

[0011] Preferably, the system also includes a feeding hopper positioned above the material cylinder. The feeding hopper has a discharge hole for feeding material into the material cylinder. A control component for controlling the material discharge is located at the lower end of the discharge hole. This control component is rotatably mounted on the feeding hopper or its cover. The control component has a second drive structure that drives the control component to control the material discharge. The drive motor of the first drive structure drives the transmission shaft of the second drive structure. By adopting the above technical solution, automatic feeding is achieved through a single drive motor driving the control component, reducing manual intervention.

[0012] Preferably, the bottom of the cylinder is provided with a detachable bead-dropping block at the bead-dropping hole, and the bead-dropping hole is located on the bead-dropping block. By adopting the above technical solution, the bead-dropping block can be replaced to accommodate different bead sizes.

[0013] Preferably, the bottom of the cylinder is provided with a rotating plate connected to a rotating shaft, and the bead-selecting disc is mounted on the rotating plate and rotates with the rotating plate; the bead-selecting hole is located on the outside of the bead-selecting disc on the rotating plate. By adopting the above technical solution, the rotating plate enhances the stability of the bead-selecting disc and prevents eccentric shaking.

[0014] Preferably, the depth of the bead selection hole is no greater than the thickness of the non-circular beads. By adopting the above technical solution, the depth control of the bead selection hole ensures that the beads are oriented in a single layer, avoiding overlap; at the same time, precise size matching improves the accuracy of bead positioning and the success rate of bead threading.

[0015] Compared with the prior art, this utility model has the following advantages: (1) By linking the bead selection plate with the clamp status, the beads are prevented from falling when the uppermost clamp is opened, ensuring the stability of the guide rod and effectively preventing bead threading failure and bead jumping; (2) The transmission structure and pulley assembly achieve precise linkage, improving response speed and system reliability; (3) The slag discharge hole and scraper design remove impurities, ensuring the purity of bead selection and smooth conveying; (4) The adjustable connecting seat and bead dropping block enhance the adaptability of the equipment, suitable for various bead specifications and production conditions; (5) The feeding bucket and drive motor are linked to achieve automated feeding, improving production efficiency and overall economy. Attached Figure Description

[0016] Figure 1-2 These are schematic diagrams of the non-planar bead selection mechanism of this utility model from different perspectives.

[0017] Figure 3 This is a side view of the non-planar bead selection mechanism of this utility model.

[0018] Figure 4 This is a partial exploded side view of the non-planar bead selection mechanism of this utility model.

[0019] Figure 5 This is an exploded view of the bead selection part of the bead selection mechanism of the present invention when beads are falling.

[0020] Figure 6 This is an exploded view of the bead selection part of the non-dropping bead selection mechanism of this utility model.

[0021] Figure 7 yes Figure 2 An enlarged schematic diagram of point a.

[0022] Figure 8 yes Figure 6 An enlarged schematic diagram of point b.

[0023] Figure 9 This is a schematic diagram of the internal structure of the non-planar bead of this utility model.

[0024] Figure 10 yes Figure 9 An enlarged schematic diagram of point c.

[0025] Figure 11 This is a schematic diagram of another implementation case of the chassis of the non-faceted bead selection mechanism.

[0026] Figure 12This is a partially enlarged exploded view of the chassis of the non-planar bead selection mechanism.

[0027] In the diagram: Bead feeding structure 1, material cylinder 11, scraper 111, spring pressure plate 112, rotating shaft 12, connecting seat 13, strip hole 131, adjusting bolt 132, cylinder bottom 14, bead dropping hole 141, slag discharge hole 142, bead dropping block 143, rotating plate 144, bead selection plate 15, bead selection hole 151, empty area 152, bead arranging structure 2, mounting frame 21, bead guide rod 22, clamp 23, first drive structure 3, drive motor 31, time-sharing drive shaft 32, feeding barrel 4, control component 41, second drive structure 42, transmission shaft 43, transmission structure 5, first pulley assembly 51, retaining structure 52, belt 53, retaining seat 54, positioning shaft 55, non-planar beads 6. Detailed Implementation

[0028] See Figure 1-12 To make the technical problem to be solved, the technical solution, and the beneficial technical effects of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0029] It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included.

[0030] like Figure 1-12 The illustrated non-planar bead selection mechanism includes a bead feeding structure 1 and a bead arranging structure 2. The bead feeding structure 1 can be installed on the bead arranging structure 2 and cooperates with it. The bead feeding structure is used to select non-planar beads with their flat bottoms facing down. The bead arranging structure 2 cooperates with the selected and oriented non-planar beads to thread them onto a guide rod 22, and gradually moves the flat-bottomed beads on the guide rod 22 downwards.

[0031] The bead arranging structure 2 includes a mounting frame 21, a guide rod 22 that cooperates with the bead selection and feeding structure 1, clamps 23 that clamp and position the guide rod 22 layer by layer, and a first drive structure 3 that drives the clamps 23 to open in a time-sharing manner. The bead arranging structure 2 can utilize existing technology, such as a drive motor 31 driving a time-sharing drive shaft 32 through a pulley assembly. The time-sharing drive shaft and the corresponding clamps 23 are provided with drive cams that drive the clamps 23 to open and close. The rotation of the time-sharing drive shaft 32 drives the drive cams on it to rotate. The engagement positions of different clamps and the drive cam protrusions are different. In this way, the time-sharing drive shaft 32 can open the clamps 23 of different layers in a time-sharing manner through the drive cams, so that the non-planar beads 6 on the guide rod 22 can fall layer by layer when the corresponding clamps 23 are opened. Of course, at any time when the clamps are open, at least one set of clamps must be ensured to hold the positioning guide rod 22 to prevent the guide rod from falling off.

[0032] The bead selection structure 1 includes a material cylinder 11, a bead selection disk 15 rotatably mounted on the bottom 14 of the cylinder, and a bead selection drive structure for driving the bead selection disk 15 to rotate. The bottom 14 of the material cylinder 11 is inclined, and a drop hole 141 is provided on the upper part of the inclined bottom 14. The periphery of the bead selection disk 15 is provided with bead selection holes 151 that can cooperate with the drop hole 141. Each bead selection hole 151 can accommodate one non-uniform bead. The rotating bead selection disk 15 is provided with a bead selection hole area and an empty area 152 at the location where it cooperates with the drop hole 141. The bead selection hole area is the area where the bead selection hole is provided, and the empty area 152 is the blank area where the bead selection hole 151 is not provided. When the empty area cooperates with the drop hole, it is in a non-drop state because there is no non-uniform bead. The rotational position of the bead selection disc 15 is linked to the opening state of the uppermost clamp 23. Specifically, when the first drive structure 3 drives the uppermost clamp 23 to be in a non-clamping position relative to the guide rod 22, the bead selection drive structure drives the empty area 152 of the bead selection disc 15 to engage with the drop hole 141. When the uppermost clamp 23 opens and disengages from the guide rod 22, the engagement between the upper end of the guide rod 22 and the drop hole 141 may not be accurate. The control area 152 engaging with the drop hole 141 prevents the bead from falling, effectively preventing the bead from getting stuck in the drop hole. In this structure, the linkage between the bead selection disc 15 and the clamp 23 ensures that the drop hole 141 is covered when the uppermost clamp 23 is open, preventing the bead from falling and interfering with the positioning of the guide rod 22. Simultaneously, the mechanical linkage synchronizes the bead threading process, preventing threading failures caused by the guide rod 22 shaking, thus improving production stability and efficiency.

[0033] The drop hole 141 can preferably be located at the top of the bead selection plate 15.

[0034] As shown in the figure, the bead selection drive structure includes a rotating shaft 12 connected to the bead selection disk 15, which is mounted on the bottom 14 of the cylinder. A transmission structure 5 is provided between the rotating shaft 12 and the drive motor 31 of the first drive structure 3. When the drive motor 31 drives the uppermost clamp 23 to be in a non-clamping positioning guide rod 22 position, the transmission structure 5 drives the empty area 152 of the bead selection disk 15 to engage with the bead dropping hole 141. In this structure, since the rotating shaft 12 is mounted on the inclined bottom 14 of the cylinder, there is a certain angle between the rotating shaft 12 and the motor shaft of the drive motor 31. Therefore, the transmission structure 5 is required. The transmission structure 5 transmits and connects the drive motor 31 and the bead selection disk 15 to achieve precise linkage control; it ensures that the empty area 152 of the bead selection disk 15 is aligned with the bead dropping hole 141 in a timely manner, thereby enhancing the system response speed and reliability. The transmission structure 5 can be a pair of gears, such as a bevel gear, to connect the motor shaft with the angled joint and the rotating shaft 12.

[0035] See Figure 3 , 4 In some embodiments, the transmission structure 5 includes a first pulley assembly 51 disposed between the rotating shaft 12 and the drive motor 31, and a retaining structure 52 for maintaining the torsion of the belt 53 of the first pulley assembly 51. When the drive motor 31 drives the uppermost clamp 23 to open, the first pulley assembly 51 drives the empty area 152 of the bead selection disk 15 to engage with the bead drop hole 141. In this structure, the belt 53 torsion retaining structure 52 ensures smooth transmission and avoids slippage and vibration; at the same time, the pulley assembly 51 achieves angle synchronization, making the empty area 152 of the bead selection disk 15 and the bead drop hole 141 accurately aligned, further preventing beads from falling accidentally and bead threading deviation. The retaining structure 52 may include a retaining seat 54 disposed on the mounting bracket 21, and the retaining seat 54 is provided with a positioning shaft 55 for maintaining the torsion of the belt 53. The positioning shaft 55 may be provided with a roller or bearing that engages with the belt 53.

[0036] like Figure 1 , 5 As shown in Figures 6, 7, 11, and 12, a slag discharge hole 142 with an inner diameter smaller than that of the non-uniform beads is provided between the lower part of the inclined cylinder bottom 14 and the drop bead hole 141, located along the rotation path of the bead selection hole 151. In this structure, the slag discharge hole 142 automatically filters impurities and defective beads, preventing blockage of the bead selection hole 151; at the same time, its positional design avoids interfering with normal bead conveying, improving bead selection purity and overall production efficiency. The slag discharge hole 142 is preferably located at any position on the path of the bead selection disc 15 in the rotation direction, from the material placement area to the drop bead hole 141, and multiple slag discharge holes 142 can be provided.

[0037] like Figure 6 , 8As shown, the material cylinder 11 is equipped with a scraper 111 that cooperates with the bead selection plate 15. The lower part of the inclined cylinder bottom 14 and the corresponding part of the cylinder wall of the material cylinder 11 constitute the material placement area. The scraper 111 is set at any position on the path of the bead selection plate 15 in the rotation direction, from the material placement area to the bead drop hole 141. A spring pressure plate 112 is provided in the material cylinder at the bead drop hole 141 to press the beads down. In this structure, the scraper 111 cleans the surface of the bead selection plate 15 to ensure that the beads are arranged in a single layer and the orientation is accurate, and scrapes out the non-conical beads 6 that enter the bead selection hole 151 with the conical surface facing down; at the same time, the spring pressure plate 112 assists the beads to fall, avoids jamming, and improves the smoothness of conveying and the success rate of bead threading.

[0038] like Figure 3 , 4 As shown, a connecting seat 13 for connecting the mounting bracket 21 is provided on one side of the bead feeding structure 1. An adjustable slotted hole 131 and a connecting bolt are provided between the connecting seat 13 and the mounting bracket 21. An adjusting bolt 132 for adjusting the bead feeding structure 1 is also provided between the connecting seat 13 and the mounting bracket 21. In this structure, the slotted hole 131 and the adjusting bolt 132 allow for fine-tuning of the position to accommodate different guide rod 22 specifications; simultaneously, the adjustable connection ensures precise alignment between the bead feeding structure 1 and the bead arranging structure 2, enhancing the equipment's versatility and ease of installation.

[0039] like Figure 1-3 As shown, the system also includes a feeding hopper 4 positioned above the material cylinder 11. The feeding hopper 4 has a discharge hole for feeding material into the material cylinder 11. A control element 41 for controlling the material discharge is located at the lower end of the discharge hole. The control element 41 is rotatably mounted on the feeding hopper 4 or the feeding hopper cover 42. The control element 41 has a second drive structure 42 that drives the control element 41 to control the material discharge. The drive motor 31 of the first drive structure 3 can drive the transmission shaft 43 of the second drive structure 42 via a gear set. In this structure, the feeding hopper 4 and the control element 41 work together to achieve automatic feeding, reducing manual intervention. Simultaneously, unified control via the drive motor 31 optimizes energy utilization and timing coordination, improving the degree of automation and consistency in production. The control element 41 can be set to close the discharge hole by default. The rotating transmission shaft 43 drives a lever to reciprocate via a cam. When the reciprocating lever pushes the control element 41 to open the discharge hole, or disengages from the control element 41, the control element 41, under the action of an elastic body, opens the discharge hole. The feeding control of the feeding hopper 4 can be achieved using existing technology.

[0040] like Figure 12 As shown, the bottom 14 of the cylinder is equipped with a detachable bead-dropping block 143 at the bead-dropping hole 141, and the bead-dropping hole 141 is located on the bead-dropping block 143. In this structure, the bead-dropping block 143 is replaceable to accommodate different bead sizes and shapes; at the same time, the modular design facilitates maintenance and cleaning, extends the service life of the equipment, and reduces operating costs.

[0041] In some embodiments, the bottom of the cylinder 14 is provided with a rotating plate 144 connected to the rotating shaft 12, and the bead-selecting disk 15 is mounted on the rotating plate 144 and rotates with the rotating plate 144; the bead-selecting holes 151 are provided on the outer side of the bead-selecting disk 15 located on the rotating plate 144. In this structure, the rotating plate 144 enhances the stability of the bead-selecting disk 15 and prevents rotational eccentricity; at the same time, the layout of the outer bead-selecting holes 151 optimizes the bead path, improves screening efficiency and capacity, and ensures continuous production. The rotating plate 144 can be engaged with the bead-selecting disk 15 by bolts or matching protrusions and grooves to drive the bead-selecting disk 15.

[0042] In some embodiments, the depth of the bead selection hole 151 is no greater than the thickness of the non-faceted beads. In this structure, the depth control of the bead selection hole 151 ensures that the beads are oriented in a single layer, avoiding overlap or tilting; at the same time, through precise size matching, it improves the accuracy of bead positioning and the success rate of bead threading, and reduces the scrap rate.

[0043] A method is also disclosed, which can employ any technical solution or combination of solutions from the aforementioned mechanisms. A method for selecting non-planar beads involves rotating a bead-selecting disc 15 on an inclined cylindrical bottom 14. The bead-selecting hole 151 on the disc 15, capable of accommodating one non-planar bead 6, is moved with the rotation of the disc 15, transporting the selected and oriented beads from the lower part of the inclined cylindrical bottom 14 to the drop hole 141 at the upper part of the bottom 14. The bead-selecting disc 15 has a bead-selecting hole 151 area and an empty area 152. The rotation of the bead-selecting disc 15 is controlled in conjunction with the opening and closing state of the uppermost clamp 23 of the bead-arranging structure 2. When the uppermost clamp 23 of the bead-arranging structure 2 is in a non-clamping state, the empty area of ​​the bead-selecting disc 15 is controlled to engage with the drop hole 141.

[0044] Preferably, a rotating shaft 12 for driving the bead-selecting disk 15 to rotate is installed on the inclined bottom 14, and a transmission structure 5 is provided between the motor shaft of the drive motor 31 of the bead-arranging structure 2 and the rotating shaft 12 with an inclined angle.

[0045] Preferably, the transmission structure 5 is configured as a first pulley assembly 51, and a retaining structure is provided to maintain the torsion of the belt 53 of the first pulley assembly 51.

[0046] When the bead selection mechanism is activated, the lower area of ​​the inclined cylinder bottom 14 serves as the material placement area. The bead selection disc 15 rotates from the material placement area, and the bead selection hole 151 selects the non-uniform beads 6 by chance within the bead selection hole 151 as the bead selection disc 15 continues to rotate. During the rotation, the non-uniform beads 6 with their flat bottoms facing down in the bead selection hole 151 continue to rotate until they reach the drop hole 141, where they engage with the upper end of the guide rod 22 of the bead arrangement structure 2 and are threaded onto the guide rod 22. Since the non-uniform beads 6 with their flat bottoms facing up and the other conical surface facing down in the bead selection hole 151 have low friction with the sidewall of the bead selection hole 151, they are easily carried out as the bead selection disc 15 rotates, thus selecting the non-uniform beads with their flat bottoms facing down. In addition, the conical end of the opposite-faced bead 6 with the conical surface facing down inside the bead selection hole 151 is easy to get stuck in the slag discharge hole 142, and is more likely to be hit by the corresponding bead selection hole 151, thus popping out and screening out the opposite-faced bead 6 with the flat bottom facing down.

[0047] Referring to the accompanying drawings, the working principle of this utility model is as follows: Different-faceted beads fall from the feeding hopper 4 into the material placement area of ​​the material cylinder 11. The bead selection disc 15 rotates under the drive of the bead selection drive structure. The scraper 111 cleans the surface of the bead selection disc 15 to prevent two beads that accidentally stick together from entering the bead selection hole 151. This further ensures that the beads enter the bead selection hole 151 in a single layer and are oriented accordingly. The flat-bottomed, different-faceted beads 6 rotate with the bead selection disc 15 to the bead dropping hole 141. If the uppermost clamp 23 is in a clamping state, the bead selection hole 151 and the bead dropping hole 141 are aligned, and the beads fall into the guide rod 22 with the assistance of the spring pressure plate 112. If the uppermost clamp 23 is open, the transmission structure 5 drives the empty area 152 of the bead selection disc 15 to align with the bead dropping hole 141, preventing the beads from falling. The slag discharge hole 142 removes impurities, ensuring the purity of the selected beads. The guide rod 22, under the time-sharing control of the clamp 23, moves the beads layer by layer, completing the bead threading process. Throughout the process, the linkage control ensures the stability of the guide rod 22, avoiding threading failure caused by shaking, and improving production efficiency and product quality.

[0048] In the description of this utility model, it should be understood that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, and the other end are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the purpose of more clearly describing the technical solution of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0049] Although specific embodiments of the present invention are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of the present invention. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. A bead selection mechanism for non-planar beads, comprising a bead feeding structure and a bead arranging structure, wherein the bead arranging structure includes a mounting frame, a bead guide rod cooperating with the bead feeding structure, clamps arranged layer by layer to hold and position the bead guide rod, and a first driving structure for driving the clamps to open in a time-division manner, characterized in that: The bead selection structure includes a material cylinder, a bead selection disk rotatably mounted on the bottom of the cylinder, and a bead selection drive structure for driving the bead selection disk to rotate. The bottom of the material cylinder is inclined, and a drop hole is provided on the upper part of the inclined bottom. The bead selection disk is provided with bead selection holes around its periphery that can cooperate with the drop hole. Each bead selection hole can accommodate one non-uniform bead. The rotating bead-selecting disc has a bead-selecting hole area and an empty area at the location where it mates with the bead drop hole. The rotation position of the bead-selecting disc is linked to the opening state of the uppermost clamp. When the first driving structure drives the uppermost clamp to be in a non-clamping positioning guide rod position, the bead-selecting driving structure drives the empty area of ​​the bead-selecting disc to mate with the bead drop hole.

2. The non-planar bead selection mechanism as described in claim 1, characterized in that: The bead selection drive structure includes a rotating shaft connected to the bead selection disk on the bottom of the cylinder. A transmission structure is provided between the rotating shaft and the drive motor of the first drive structure. When the drive motor drives the uppermost clamp to be in a non-clamping positioning guide rod position, the transmission structure drives the empty area of ​​the bead selection disk to cooperate with the drop hole.

3. The non-planar bead selection mechanism as described in claim 2, characterized in that: The transmission structure includes a first pulley assembly disposed between the rotating shaft and the drive motor, and a retaining structure for maintaining the belt rotation of the first pulley assembly. When the drive motor drives the uppermost clamp to open, the first pulley assembly drives the empty area of ​​the bead selection disc to engage with the bead drop hole.

4. The non-planar bead selection mechanism as described in claim 1, characterized in that: The inclined bottom of the cylinder is provided with a slag discharge hole with an inner diameter smaller than that of the bead drop hole, located at the path of the bead selection hole rotation.

5. The non-planar bead selection mechanism as described in claim 1, characterized in that: The material cylinder is equipped with a scraper that cooperates with the bead selection plate. The lower part of the inclined cylinder bottom and the corresponding part of the cylinder wall constitute a material placement area. The scraper is set at any position on the path of the bead selection plate in the rotation direction from the material placement area to the bead drop hole. The material cylinder is equipped with a spring-loaded plate at the bead drop hole to press the beads down.

6. The non-planar bead selection mechanism as described in claim 1, characterized in that: The bead feeding structure is provided with a connecting seat for connecting the mounting frame on one side. The connecting seat and the mounting frame are provided with an adjustable slot and connecting bolts. The connecting seat and the mounting frame are also provided with adjusting bolts for adjusting the bead feeding structure.

7. The non-planar bead selection mechanism as described in claim 1, characterized in that: It also includes a feeding hopper located above the material cylinder. The feeding hopper has a material discharge hole for feeding material into the material cylinder. The lower end of the material discharge hole has a control component for controlling the material discharge. The control component is rotatably mounted on the feeding hopper or the feeding hopper cover. The control component has a second drive structure for driving the control component to control the material discharge. The drive motor of the first drive structure drives the transmission shaft of the second drive structure.

8. The non-planar bead selection mechanism as described in claim 1, characterized in that: The bottom of the cylinder is provided with a detachable bead-dropping block at the bead-dropping hole, and the bead-dropping hole is located on the bead-dropping block.

9. The non-planar bead selection mechanism as described in claim 1, characterized in that: The bottom of the cylinder is provided with a rotating plate connected to a rotating shaft, and the bead selection plate is mounted on the rotating plate and rotates with the rotating plate; the bead selection hole is located on the outside of the rotating plate of the bead selection plate.

10. The non-planar bead selection mechanism as described in claim 1, characterized in that: The depth of the bead selection hole is no greater than the thickness of the non-circular beads.

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