A bead feeding mechanism
By adding a thickened section and a transition section to the output end of the bead guide rod, the problem of beads tilting or getting stuck on the guide rod is solved, achieving precise positioning and stable drop of the beads, thus improving the quality of embroidery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU GUANJIONG MECHANICAL & ELECTRICAL TECH CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-07-10
Smart Images
Figure CN224478234U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bead embroidery technology, and in particular to a bead feeding mechanism. Background Technology
[0002] Bead embroidery devices typically include a bead guide rod. This rod is used to thread and guide the beads along its length to the receiving position of the bead feeding mechanism. The bead clamp then picks up the bead from the receiving position and feeds it directly below the needle. The bead guide rod is generally a long, straight steel wire. It is usually designed to be relatively thin for several reasons: first, to ensure versatility; second, to allow the beads to fall smoothly to the receiving position, reducing friction between the bead and the bead's inner hole, allowing the beads to fall quickly and smoothly under gravity without getting stuck; and third, to reduce the rigidity of the bead guide rod. Guide rods typically require rollers or clamps for fixation and positioning. For example, after the guide rod exits the barrel, several clamps are located on one side to hold it in place. During this clamping process, the guide rod can easily wobble, causing its output end to deviate from its original position. This prevents the bead from passing smoothly through the guide hole in the guide sleeve, potentially causing it to get stuck at the top of the guide post hole, affecting bead feeding. Using a thinner guide rod with lower rigidity means that even if the clamped position is slightly off, it won't easily affect the position of the guide rod at the output end, making it easier for the bead to pass through the guide hole.
[0003] However, the inner diameter of the bead is relatively large compared to the outer diameter of the thinner guide rod. This makes it easy for the bead to wobble, tilt, or even get stuck in the entrance or hole of the guide sleeve when it falls at the end of the guide rod. When the bead clamp opens to receive the bead, the bead will tilt, causing the bead to leak or fly away, affecting the sewing of the beads and causing waste. Utility Model Content
[0004] To address the problems of the prior art, this utility model provides a bead feeding mechanism, including a bead guide rod, a guide post sleeve, and a bead feeding structure. A thickened portion is provided at the output end of the bead guide rod, and the diameter of the thickened portion matches the inner diameter of the bead, so that the bead is not easily tilted when falling, and the bead is prevented from flying or leaking when clamping.
[0005] The technical solution adopted is as follows:
[0006] A bead feeding mechanism includes a bead guide rod and a bead feeding structure corresponding to the bead guide rod. The bead feeding structure includes a bead clamp located at the lower end of the bead guide rod for receiving and feeding beads. A bead guide sleeve corresponding to the upper end of the bead clamp is provided, which cooperates with the bead guide rod. The output end of the bead guide rod is provided with a thickened part, the diameter of which is larger than the diameter of the bead guide rod.
[0007] Furthermore, a transition section for guiding and transition is provided between the thickened part and the guide bead rod.
[0008] Furthermore, the outer surface of the transition section is a smooth, tapered transition surface.
[0009] Furthermore, the thickened portion and the transition section can be integrated into a single unit, forming a sleeve that is fitted over the guide bead rod.
[0010] Furthermore, the thickened portion and the transition section can be set separately and sequentially fitted onto the outside of the guide bead rod.
[0011] Furthermore, the thickened portion is concentrically arranged with the guide bead rod.
[0012] Furthermore, the thickened portion and the transition section can be integrally set as a guide post at the output end of the guide rod. The upper end of the guide post is the transition section, and the upper end of the transition section is the small diameter end. The diameter of the small diameter end and the guide rod connection is less than or equal to the diameter of the guide rod. The end face of the small diameter end and the guide rod do not extend beyond the end face of the guide rod.
[0013] Furthermore, the guide post is welded, bonded, or interference-fitted to the guide ball rod.
[0014] Furthermore, a connecting structure is provided between the guide post and the guide ball rod.
[0015] Furthermore, the connection structure includes a connecting rod located at the lower end of the guide bead rod and a connecting hole located on the guide post that mates with the connecting rod.
[0016] Furthermore, the connection structure includes a connection hole at the lower end of the guide bead rod and a connection rod at the upper end of the guide post that mates with the connection hole.
[0017] Furthermore, the height of the thickened portion is greater than or equal to the height of the beads conveyed by the guide rod.
[0018] Furthermore, the height of the thickened portion is such that it matches the inner diameter of the bead at least before the bead is dropped.
[0019] Furthermore, the height of the thickened portion is such that it matches the inner diameter of the bead at least before the bead enters the guide bead sleeve.
[0020] Furthermore, the height of the thickened portion is higher than the height of the bead guide sleeve, that is, the thickened portion extends beyond the bead guide sleeve, and the height of the portion of the thickened portion extending beyond the bead guide sleeve is greater than or equal to the height of the conveyed bead.
[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0022] This utility model provides a bead feeding mechanism, including a bead guide rod for guiding beads, a bead guide sleeve fitted outside the bead guide rod, and a bead feeding structure corresponding to the bead guide rod. A thickened portion is provided at the output end of the bead guide rod. The diameter of the thickened portion is larger than the diameter of the bead guide rod, typically matching the inner diameter of the bead. When the bead passes through a thinner bead guide rod, because its inner diameter exceeds the diameter of the bead guide rod by a large margin, the bead is not easy to maintain a vertical position when falling, and is prone to tilting or sliding to one side. The thickened portion at the bead output end provides a high degree of fit with the inner diameter of the bead, preventing the bead from tilting and ensuring a vertical fall as much as possible. It also allows for more precise bead positioning, reducing the likelihood of beads flying or leaking when clamped, resulting in a better sewing effect. Preferably, the height of the thickened portion exceeds that of the bead guide sleeve, ensuring the bead remains vertical before entering the bead guide sleeve, preventing it from getting stuck in the entrance or bead guide hole of the bead guide sleeve, thus increasing bead feeding efficiency. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 , 3 These are schematic diagrams of the structure of this utility model from different angles;
[0025] Figure 4 This is a schematic diagram showing the disassembly of the rod sleeve and the guide bead rod.
[0026] Figure 5 This is a schematic diagram of the guide rod and the bead;
[0027] Figure 6 , 9 This is a schematic diagram showing the disassembly of the guide rod and guide post at different angles;
[0028] Figure 7 This is a schematic diagram showing the connection between the guide rod and the guide post;
[0029] Figure 8 A cross-sectional view of the connection between the guide rod and the guide post;
[0030] Figure 10 for Figure 8 Enlarged view at point a;
[0031] Among them, there are: 1. guide rod, 2. bead feeding structure, 3. bead clamp, 4. guide sleeve, 5. thickened part, 6. transition section, 7. bead, 8. guide post, 9. connecting structure, 901 connecting rod, 902 connecting hole, and 10. rod sleeve. Detailed Implementation
[0032] The present invention will be further described below with reference to specific embodiments.
[0033] refer to Figure 1-10A bead feeding mechanism includes a bead guide rod 1 and a bead feeding structure 2 corresponding to the bead guide rod 1. The bead feeding structure 2 includes a bead clamp 3 located at the lower end of the bead guide rod 1 for receiving and feeding beads. The bead feeding structure 2 can be based entirely on existing technology. The bead clamping opening of the bead clamp corresponds to the bead guide rod. A bead guide sleeve 4 is provided at the upper end of the bead clamp 3 to cooperate with the bead guide rod, and part of the bead guide rod passes through the bead guide sleeve 4. The output end of the bead guide rod 1 is provided with a thickened part 5. The diameter of the thickened part 5 is larger than the diameter of the bead guide rod, and the diameter of the thickened part 5 is usually matched with the inner diameter of the bead 7 fed by the bead guide rod.
[0034] Existing guide rods are generally made of thinner iron wire, which makes it easier to thread beads and guide them to the output end. Secondly, it reduces the impact of bead threading at the upper end of the guide rod and the movement of the positioning structure on the guide rod. The upper end of the guide rod is used for independent bead threading or in conjunction with a bead threading device. After threading, it slides towards the output end for transport. The output end of the guide rod 1 typically serves as the end point, engaging with the bead feeding structure 2. It is suspended at the bead feeding clamp location on the bead feeding structure, supplying beads to the reciprocating bead feeding clamp. The upper end of the guide rod 1 can also be provided with necessary shapes, such as grooves that engage with clamping and positioning the guide rod; a spiral section and / or a curved section wound around at least one rotating wheel for fixing the guide rod.
[0035] When the outer diameter of the bead guide rod is relatively thin, and the diameter of the bead hole is significantly larger than the diameter of the guide rod, the beads are prone to skewing. Beads can easily get stuck at the entrance of the bead guide sleeve 4 or in the bead guide hole of the sleeve, affecting bead feeding. If the bead passes smoothly through the bead guide sleeve 4 but falls into the bead clamp at a skewed angle, the bead clamp is prone to causing beads to fly away or leak. Therefore, a thickened section is provided at the output end of the guide rod to fit as closely as possible to the bead, allowing for more precise bead positioning. This ensures the guide rod's control over the bead, thereby guaranteeing the verticality of the bead, smooth bead dropping, and preventing interference with the bead clamp, resulting in better embroidery quality.
[0036] In one implementation, the height of the thickened portion 5 is such that, at least before the bead clamp, the thickened portion matches the inner diameter of the bead. At least before the bead falls, the bead hole and the thickened portion 5 have a high degree of fit, making it easier for the bead to fall vertically. When the bead clamp holds the bead, the bead will not tilt or lean, reducing the risk of flying or leaking beads. Preferably, the height of the thickened portion 5 is greater than or equal to the height of the bead 7 conveyed by the guide rod. The thickened portion 5 needs a high degree of fit with the bead, so its height must be at least the same as the bead height to more accurately position the bead and ensure that the bead fits the guide rod better, preventing tilting or slippage to one side. High fit here does not mean that the bead and the thickened portion are completely tightly fitted without gaps, but rather that there is still space between the bead and the thickened portion for the bead to fall, but the space for the bead to tilt is very small.
[0037] In another implementation, the height of the thickened portion 5 is such that it matches the inner diameter of the bead at least before the bead enters the guide sleeve. Before the bead enters the guide sleeve 4, the bead hole and the thickened portion 5 are closely fitted, preventing the bead from tilting or becoming stuck at the entrance of the guide sleeve or in the guide post hole, thus affecting bead feeding. Preferably, the height of the thickened portion 5 is higher than the height of the guide sleeve 4, meaning the thickened portion extends beyond the guide sleeve, and the height of this extended portion is greater than or equal to the height of the bead being fed. This allows for better contact between the bead and the thickened portion, more precise bead positioning, and ensures the bead remains vertical before entering the guide sleeve 4, resulting in smoother bead descent and less likelihood of jamming.
[0038] A transition section 6 is provided between the thickened part 5 and the guide rod 1 for guiding and transitioning. The outer surface of the transition section 6 is a smooth, tapered transition surface. The smooth transition surface reduces surface friction and minimizes damage caused by the bead colliding with the guide rod. The tapered transition section gradually increases in diameter from top to bottom, providing a guiding effect for the bead and allowing it to enter the thickened part 5 more smoothly.
[0039] In one implementation, the thickened portion 5 and the transition section 6 can be integrally formed, forming a sleeve 10 that fits over the guide rod 1. Alternatively, the thickened portion 5 and the transition section 6 can be separate components, sequentially fitted onto the outside of the guide rod 1. The sleeve 10 facilitates installation and disassembly, allowing the length of the thickened portion 5 to be replaced as needed to accommodate beads of different heights. The guide rod 1 is machined separately, while the thickened portion 5 and the transition section 6 are machined together into the sleeve 10, which is then fitted over the guide rod 1. The material of the sleeve 10 is not limited and can be rubber, plastic, metal, etc.
[0040] In another embodiment, the thickened part 5 and the transition section 6 can be integrally set. The transition section is set at the output end of the guide rod 1 as a guide post 8, and the transition section is set at the upper end of the thickened part. The upper end of the transition section is the small diameter end. The diameter of the small diameter end and the guide rod 1 is less than or equal to the diameter of the guide rod 1. The end face of the small diameter end and the guide rod do not exceed the end face of the guide rod. The small diameter end of the transition section can be completely merged into the end face of the guide rod connection. The end face of the small diameter end does not exceed the end face of the guide rod connection.
[0041] Preferably, the diameter of the upper end face of the guide post 8 is smaller than the diameter of the guide rod 1, so as to prevent the formation of a step between the guide post 8 and the guide rod 1, which would prevent the bead from falling smoothly and prevent the bead from getting stuck at the step.
[0042] The guide post 8 is welded, bonded, or press-fitted to the guide ball rod 1, or a connecting structure 9 is provided between the guide post 8 and the guide ball rod 1. The connecting structure 9 includes a connecting rod 901 located at the lower end of the guide ball rod 1 and a connecting hole 902 on the guide post 8 that mates with the connecting rod 901. Figure 6 Alternatively, a connecting hole 902 can be provided at the lower end of the guide bead rod 1, and a connecting rod 901 (not shown in the figure) can be provided at the upper end of the guide post 8 and mate with the connecting hole 902. A connecting structure 9 is provided to facilitate installation and disassembly. The connecting structure 9 can also adopt an existing structure. The connecting hole can be a through hole or a non-through hole, as long as it meets the requirement of mating and connecting with the connecting rod.
[0043] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A bead feeding mechanism, comprising a bead guide rod (1) and a bead feeding structure (2) corresponding to the bead guide rod (1), wherein the bead feeding structure (2) includes a bead clamp (3) disposed at the lower end of the bead guide rod (1) for receiving and feeding beads, and a bead guide sleeve (4) corresponding to the upper end of the bead clamp (3) is provided, which cooperates with the bead guide rod, characterized in that: The output end of the guide rod (1) is provided with a thickened part (5), and the diameter of the thickened part (5) is larger than the diameter of the guide rod.
2. The bead feeding mechanism as described in claim 1, characterized in that: A transition section (6) for guiding and transition is provided between the thickened part (5) and the guide rod (1).
3. The bead feeding mechanism as described in claim 2, characterized in that: The thickened part (5) and the transition section (6) can be integrated into a sleeve (7) that is sleeved outside the guide bead rod (1).
4. The bead feeding mechanism as described in claim 2, characterized in that: The thickened part (5) and the transition section (6) can be set separately and sequentially fitted onto the outside of the guide bead rod (1).
5. The bead feeding mechanism as described in claim 1, characterized in that: The thickened part and the transition section (6) can be set as a whole and set as a guide post (8) at the output end of the guide rod (1). The upper end of the guide post is the transition section, and the upper end of the transition section is the small diameter end. The diameter of the small diameter end and the guide rod (1) is less than or equal to the diameter of the guide rod (1). The end face of the small diameter end and the guide rod do not exceed the end face of the guide rod.
6. The bead feeding mechanism as described in claim 5, characterized in that: A connecting structure (9) is provided between the guide post (8) and the guide ball rod (1).
7. The bead feeding mechanism as described in claim 6, characterized in that: The connection structure (9) includes a connecting rod (901) located at the lower end of the guide bead rod (1) and a connecting hole (902) located on the guide post (8) that mates with the connecting rod (901).
8. The bead feeding mechanism as described in claim 7, characterized in that: The connection structure (9) includes a connection hole (902) at the lower end of the guide bead rod (1) and a connection rod (901) at the upper end of the guide post (8) that cooperates with the connection hole (902).
9. The bead feeding mechanism as described in claim 1, characterized in that: The height of the thickened portion (5) is such that the thickened portion matches the inner diameter of the bead at least before the bead enters the guide bead sleeve.
10. The bead feeding mechanism as described in claim 1, characterized in that: The height of the thickened part (5) is higher than the height of the guide bead sleeve (4), that is, the thickened part extends beyond the guide bead sleeve, and the height of the part of the thickened part that extends beyond the guide bead sleeve is greater than or equal to the height of the conveyed bead.