A beading device

Abstract

The application discloses a pearl embroidering device, which sequentially passes through a screening element and a material passing channel through a sieve hole. When the sieve hole corresponds to the screening element, if the cylindrical end of the material pearl in the sieve hole faces downward and the pointed cone end faces upward, the material pearl with the pointed cone end facing upward can pass through the screening element. If the cylindrical end of the material pearl in the sieve hole faces upward and the pointed cone end faces downward, the screening element contacts the cylindrical end of the material pearl, the contact area of the two is large, meanwhile, the screening element deforms and exerts a larger force on the cylindrical end, that is, the cylindrical end and the screening element stop cooperating to make the material pearl separate from the sieve hole, so that the material pearl with the cylindrical end facing upward cannot pass through the screening element. Thus, it is ensured that each material pearl on the guide pearl rod faces the same direction, the cylindrical end of each material pearl faces downward, and the pointed cone end faces upward, so that the embroidery effect is not affected by the different directions of the material pearls on the guide pearl rod. The first clamping arm and the second clamping arm are arranged, which is helpful to keep the guide pearl rod stationary.

Description

Technical Field

[0001] This utility model generally relates to the field of computer embroidery machine technology, and more particularly to a bead embroidery device. Background Technology

[0002] Bead embroidery is an embroidery technique that involves embroidering beads onto fabric. In existing technology, the beads are transported by a feeding mechanism. The principle is that the beads are placed in a material cup and, through stirring or other methods, the beads are threaded onto a vertical guide rod, the upper end of which is connected to the material cup.

[0003] The beads include center-hole drill beads, which are pointed at the top and rounded at the bottom, with different shapes on the top and bottom surfaces, requiring a specific direction for the material to be dispensed. If the center-hole drill beads inserted into the guide rod are not facing the same direction, it will affect the embroidery effect. Utility Model Content

[0004] This utility model provides a bead embroidery device, including a material cylinder mechanism and a clamping assembly.

[0005] The material cylinder mechanism includes a screening component and a turntable and a fixed plate arranged on the upper and lower sides. The turntable has multiple screen holes for material beads to pass through, and the multiple screen holes are arranged in a ring. The depth of the screen holes is less than the length of the material beads. The fixed plate has a material passage for the screened material beads to pass through. The screening component is located close to the turntable. The turntable rotates, so that each screen hole passes through the screening component and the material passage in sequence. The clamping assembly includes a first clamping arm and a second clamping arm that are close to or far apart from each other, with the first clamping arm and the second clamping arm positioned near the lower opening of the material passage.

[0006] As an alternative implementation, the clamping assembly further includes a cam intermittent transmission structure that drives the first clamping arm or the second clamping arm to move.

[0007] As one possible implementation, the first clamping arm is provided with a first engaging portion, and the second clamping arm is provided with a second engaging portion that engages with the first engaging portion. When one of the first clamping arm and the second clamping arm moves, it engages with the second clamping part through the first engagement part, thereby driving the other arm to move.

[0008] As one possible implementation, the N sieve holes are arranged in a ring, where N is a positive integer. The intermittent cam transmission structure includes a star-shaped cam and a lever. The star-shaped cam has N radially extending protrusions in the circumferential direction. The lever is located between the star-shaped cam and the first clamping arm. The rotation of the star-shaped cam causes the protrusion to intermittently drive the lever to move, thereby causing the first clamping arm to move intermittently.

[0009] In one possible implementation, the first clamping arm is elongated and includes a first clamping end, a first end, and a first engaging portion located between the first clamping end and the first end, wherein the first end is used to abut against the lever.

[0010] As one possible implementation, the second clamping arm includes a second clamping end, and the second clamping end and the first clamping end are connected by a return spring.

[0011] As an implementation method, the number of sieve holes is N-1.

[0012] As an alternative implementation, a guide rod extending vertically is also included, the guide rod being located below the lower opening of the material passage, the distance between the end of the guide rod and the lower opening being less than the length of the material bead.

[0013] As an implementation, before one of the screen holes aligns directly with the upper opening of the material passage, the first clamping arm and the second clamping arm are in a clamping state; after one of the screen holes is misaligned with the upper opening of the material passage, the first clamping arm and the second clamping arm are in an open state until the next screen hole aligns directly with the upper opening of the material passage, at which point the first clamping arm and the second clamping arm switch back to the clamping state. In the above-described scheme, the material passes through the sieve holes and then through the screening element and the material passage. When the sieve holes and screening element correspond, if the cylindrical end of the bead inside the sieve hole faces downward and the conical end faces upward, the screening element contacts the conical end of the bead. The contact area between them is small, and the force exerted on the conical end by the deformation of the screening element is relatively small, insufficient to drive the bead out of the sieve hole. Thus, the bead with the conical end facing upward can pass through the screening element. If the cylindrical end of the bead inside the sieve hole faces upward and the conical end faces downward, the contact area between the screening element and the cylindrical end of the bead is large. Simultaneously, the force exerted on the cylindrical end by the deformation of the screening element is greater, meaning the cylindrical end cooperates with the stop of the screening element to detach the bead from the sieve hole. Thus, the bead with the cylindrical end facing upward cannot pass through the screening element. This ensures that each bead on the guide rod faces the same direction, with the cylindrical end facing downward and the conical end facing upward, avoiding any impact on the embroidery effect due to different bead orientations on the guide rod. The first and second clamping arms help keep the guide rod stationary. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the bead embroidery device provided in an embodiment of the present utility model; Figure 2 Schematic diagram of the material cylinder mechanism provided in the embodiment of this utility model Figure 1 ; Figure 3 Schematic diagram of the material cylinder mechanism provided in the embodiment of this utility model Figure 2 ; Figure 4 A cross-sectional schematic diagram of the material cylinder mechanism provided in an embodiment of this utility model; Figure 5 Schematic diagram of the material cylinder mechanism provided in the embodiment of this utility model Figure 3 ; Figure 6 for Figure 5 Exploded view; Figure 7 Schematic diagram of the fixed disk structure provided in the embodiment of this utility model Figure 1 ; Figure 8 Schematic diagram of the fixed disk structure provided in the embodiment of this utility model Figure 2 ; Figure 9 A schematic diagram of the material beads located inside the sieve holes provided for an embodiment of this utility model. Figure 1 ; Figure 10 A schematic diagram of the material beads located inside the sieve holes provided for an embodiment of this utility model. Figure 2 ; Figure 11 Schematic diagram of the material cylinder mechanism and clamping assembly provided in the embodiments of this utility model Figure 1 ; Figure 12 for Figure 11 An explosion diagram; Figure 13 Schematic diagram of the material cylinder mechanism and clamping assembly provided in the embodiments of this utility model Figure 2 ; Figure 14 This is a schematic diagram of the clamping assembly provided in an embodiment of the present utility model; 10. Material cylinder mechanism, turntable, screen hole, 111, flared section, 1111, equal diameter section, 1112, fixed plate, material passage, 121, upper opening, 1211, lower opening, 1212, inclined slide surface, 1213, anti-tipping part, 122, screening component, felt, felt mounting component, 132, baffle cover, inlet bead, 141, fixed housing; Clamping assembly 20, first clamping arm 21, first clamping end 211, first end 212, first engaging part 213, second clamping arm 22, second clamping end 221, second end 222, second engaging part 223, lever 23, star cam 24, driven gear 25, driving gear 26, mounting shaft 27, guide tube 28, support frame 29; Guide bead rod 30. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] In the field of computerized embroidery machines, center-hole rhinestone beads are a type of imitation crystal with a central hole. Center-hole rhinestone bead embroidery is a precision inlay embroidery technique that uses bead embroidery devices to embroider center-hole rhinestone beads onto fabric, creating a dazzling three-dimensional decorative effect.

[0018] The bead embroidery device is installed on the head housing of the computerized embroidery machine. The bead embroidery device includes a bead supply mechanism and a bead delivery mechanism. The bead supply mechanism is used to supply the central hole bead, and the bead delivery mechanism is used to transport the central hole bead to the embroidery position. At the embroidery position, the machine needle of the machine head cooperates with the central hole bead to embroider the central hole bead onto the fabric.

[0019] The center-hole drill bead has a conical end and a cylindrical end along its hole axis. The conical end is pointed, and the cylindrical end is cylindrical. Because the end face shapes of the conical and cylindrical ends are different, there is a directional requirement for material output. That is, the conical end of each center-hole drill bead must face upward and the cylindrical end must face downward. In this way, after the center-hole drill bead is embroidered, the cylindrical end of the center-hole drill bead will fit against the fabric.

[0020] In related technologies, the bead supply mechanism includes a guide rod 30 extending vertically, which is used to string in-hole beads. If the in-hole beads strung on the guide rod 30 have inconsistent orientations, it will affect the embroidery effect. Based on this, this application proposes a feed cylinder mechanism 10, which can screen in-hole beads. If the cylindrical end of the in-hole bead faces down and the conical end faces up, the feed cylinder mechanism 10 allows the in-hole bead to enter the guide rod 30; if the conical end of the in-hole bead faces down and the cylindrical end faces up, the feed cylinder mechanism 10 prevents the in-hole bead from entering the guide rod 30. In this way, each in-hole bead on the guide rod 30 has the same orientation, with the cylindrical end of each in-hole bead facing down and the conical end facing up.

[0021] In detail, such as Figure 1-3 As shown, the feed cylinder mechanism 10 includes a turntable 11, a fixed plate 12, and a screening element 13. The turntable 11 and the fixed plate 12 are arranged vertically. The turntable 11 has sieve holes 111 through which feed beads pass, and the depth of the sieve holes 111 is less than the length of the feed beads. The fixed plate 12 has a feed channel 121 through which screened feed beads pass. The screening element 13 is positioned close to the turntable 11.

[0022] The turntable 11 rotates, causing the screen holes 111 to pass sequentially through the screening element 13 and the material passage 121. When the cylindrical end of the bead in the screen hole 111 is facing upwards, the screening element 13 engages with the cylindrical end stop to disengage it from the screen hole 111; when the conical end of the bead in the screen hole 111 is facing upwards, the screen hole 111 carries the bead through the screening element 13. When the screen hole 111 passes through the material passage 121, the screen hole 111 and the material passage 121 become connected, allowing the bead in the screen hole 111 to enter the material passage 121.

[0023] like Figure 2 and Figure 3 As shown, the barrel mechanism 10 also includes a fixed housing 15 surrounding the edge of the turntable 11. The fixed housing 15 and the turntable 11 form a receiving cavity for accommodating a large number of beads (i.e., center-hole drill beads). The turntable 11 may be, but is not limited to, a circular disk, and correspondingly, the fixed housing 15 may be, but is not limited to, a circular cylinder.

[0024] The turntable 11 is rotatable and can rotate on its own axis. The turntable 11 has sieve holes 111, which are through holes penetrating the thickness of the turntable 11. The depth of the sieve holes 111 is less than the length of the material bead, so that part of the sieve holes 111 on the material bead is located on the outer side. The shape of the fixed plate 12 can match the shape of the turntable 11, and the fixed plate 12 is coaxially arranged with the turntable 11. The fixed plate 12 has a material passage 121, which includes an upper opening 1211 facing the turntable 11 and a lower opening 1212 facing away from the turntable 11. The extension trajectory of the material passage 121 can be a straight line, a broken line, an arc, etc. The radial dimension of the upper opening 1211 on the fixed plate 12 matches the radial dimension of the screen hole 111 on the turntable 11. After the turntable 11 rotates by a preset angle, the screen hole 111 is directly opposite the upper opening 1211 of the material passage 121, so that the screen hole 111 is connected to the material passage 121. At the current moment, the material beads located in the screen hole 111 enter the material passage 121.

[0025] The screening component 13 is a non-rigid part, possessing plasticity and deformable upon contact with the material beads. The screening component 13 can be, but is not limited to, a felt screening component, a brush screening component, a rubber screening component, or a silicone screening component. The screening component 13 can be, but is not limited to, fixedly connected to the fixed housing 15.

[0026] As the turntable 11 rotates, the screen holes 111 pass sequentially through the screening element 13 and the material passage 121. When the screen holes 111 correspond to the screening element 13, as... Figure 10 As shown, if the cylindrical end of the bead located in the sieve hole 111 faces downward and the conical end faces upward, the screening element 13 contacts the conical end of the bead. The contact area between the two is small. At the same time, the force exerted on the conical end by the deformation of the screening element 13 is small, which cannot drive the bead out of the sieve hole 111. In this way, the bead with the conical end facing upward can pass through the screening element 13. Figure 9 As shown, if the cylindrical end of the bead located in the sieve hole 111 faces upward and the conical end faces downward, the screening element 13 contacts the cylindrical end of the bead, resulting in a large contact area. Simultaneously, the deformation of the screening element 13 exerts a significant force on the cylindrical end, meaning the cylindrical end engages with the screening element 13 to stop the bead from leaving the sieve hole 111. This prevents the cylindrical end-facing bead from passing through the screening element 13. This ensures that each bead on the guide rod 30 faces the same direction, with the cylindrical end facing downward and the conical end upward, avoiding any impact on the embroidery effect due to different bead orientations on the guide rod 30.

[0027] It should be noted that the reference Figure 1 As shown, the guide rod 30 is located below the lower opening 1212 of the material channel, and the guide rod 30 is directly opposite the lower opening 1212 of the material channel. This ensures that the material balls leaving the lower opening 1212 of the material channel enter the guide rod 30 accurately. The distance between the upper end of the guide rod 30 and the lower opening 1212 of the material channel 121 is less than the length of the material ball, further ensuring that the material balls enter the guide rod 30 accurately.

[0028] The sieve hole 111 includes an upper and lower flared section 1111 and a constant diameter section 1112, the constant diameter section 1112 matching the cylindrical end of the material bead.

[0029] like Figure 9 and Figure 10 As shown, the minimum radial dimension of the flared section 1111 is equal to the radial dimension of the constant diameter section 1112. The flared section 1111 facilitates the entry of material beads into the sieve aperture 111.

[0030] If the cylindrical end of the bead inside the sieve hole 111 faces downward and the conical end faces upward, the cylindrical end of the bead matches the equal-diameter section 1112 of the sieve hole 111. The cylindrical end of the bead is constrained by the equal-diameter section 1112 of the sieve hole 111, effectively fixing the bead and further helping the screening element 13 to prevent the bead from detaching from the sieve hole 111. If the cylindrical end of the bead inside the sieve hole 111 faces upward and the conical end faces downward, there is a gap between the conical end of the bead and the equal-diameter section 1112 of the sieve hole 111, and there is also a gap between the cylindrical end of the bead and the flared section 1111 of the sieve hole 111. In this way, when the screening element 13 and the cylindrical end of the bead stop together, it helps the bead with the conical end facing upward to detach from the sieve hole 111.

[0031] The turntable 11 has multiple screen holes 111 arranged in a ring. The turntable 11 rotates, and each screen hole 111 passes through the screening element 13 and the material passage 121 in sequence.

[0032] like Figure 4 and Figure 5As shown, the turntable 11 has multiple screen holes 111, which are arranged in a ring with equal or non-equal intervals. Preferably, the multiple screen holes 111 are arranged in a ring with equal intervals. For example, the central angle between two adjacent screen holes 111 is 40°, ensuring that every 40° rotation of the turntable 11, one screen hole 111 corresponds to the screening element 13 and the material passage 121, thereby forming a continuous screening of material beads at equal time intervals and improving the screening efficiency per unit time.

[0033] It should be noted that the size of the central angle corresponding to two adjacent sieve holes 111 is matched with the spacing between two adjacent beads on the guide rod 30. If the central angle is too small, the spacing between two adjacent beads on the guide rod 30 will be small, resulting in the beads on the guide rod 30 being arranged too densely, which may cause the needle to not have enough time to embroider the beads. If the central angle is too large, the spacing between two adjacent beads on the guide rod 30 will be large, resulting in the beads on the guide rod 30 being arranged too sparsely, which may cause the supply of beads to be insufficient and the embroidery to be interrupted.

[0034] The area of ​​the sieve hole 111 is smaller than the area of ​​the upper opening 1211. This facilitates the entry of the material beads passing through the sieve hole 111 into the material passage 121.

[0035] Among them, such as Figure 6 and Figure 7 As shown, the fixed disk 12 is a circular disk, and the length of the upper opening 1211 extends along the circumferential direction of the fixed disk 12. The length of the upper opening 1211 is L2, and the arc length of the central angle corresponding to the adjacent screen hole 111 is L1, where L1 > L2.

[0036] The upper opening 1211 is, but is not limited to, an arc-shaped opening, with an arc length of L2. The lower opening 1212 is, but is not limited to, a circular opening. The area of ​​the upper opening 1211 is larger than the area of ​​the lower opening 1212.

[0037] If L2 ≥ L1, both sieve holes 111 are simultaneously aligned with the upper opening 1211 of the material passage 121, resulting in two beads entering the material passage 121. This shortens the distance between adjacent beads on the guide rod 30, causing the beads on the guide rod 30 to be too densely packed. However, if L1 > L2, only one sieve hole 111 is aligned with the upper opening 1211 of the material passage 121, allowing only one bead to enter the material passage 121. Until the next sieve hole 111 aligns with the upper opening 1211 of the material passage 121, there is always only one bead in the material passage 121.

[0038] Furthermore, the lower opening 1212 is projected orthographically onto the upper opening 1211, with the projection of the lower opening 1212 located at one end of the upper opening 1211 along its length, or the projection of the lower opening 1212 being close to one end of the upper opening 1211 along its length. An inclined slide surface 1213 is provided between the upper opening 1211 and the lower opening 1212, smoothly connecting them. The width of the upper opening 1211 matches the radial dimension of the cylindrical end of the bead, and the radial dimension of the lower opening 1212 matches the radial dimension of the cylindrical end of the bead. The sidewall between the upper opening 1211 and the lower opening 1212 extends vertically. This sidewall restricts the movement of the bead, preventing it from swaying during its movement within the material passage 121, and helps the bead move stably on the inclined slide.

[0039] The lower opening 1212 is provided with a ball-proof tipping part 122, which extends downward from the edge of the lower opening 1212 to form the ball-proof tipping part 122.

[0040] like Figure 8 As shown, the lower opening 1212 extends downwards to form an anti-tipping portion 122. The anti-tipping portion 122 is arc-shaped, and its radial dimension matches the radial dimension of the lower opening 1212. The anti-tipping portion 122 guides the beads, preventing them from tilting and helping them to accurately enter the guide rod 30.

[0041] Among them, such as Figure 2-4 As shown, a blocking cover 14 is provided inside the fixed housing 15. The blocking cover 14 is connected to the inner surface of the shell wall of the fixed housing 15, or the shell wall of the fixed housing 15 and the blocking cover 14 are integrally formed.

[0042] The baffle 14 is provided with a feed bead inlet 141 through which the material beads pass. The baffle 14, the turntable 11, and the inner surface of the shell wall of the fixed housing 15 form a blocking space, which is used to ensure that the material beads enter the interior only through the feed bead inlet 141. The orthogonal projection of the baffle 14 onto the fixed disk 12 covers the opening of the material passage 121 facing the turntable 11.

[0043] like Figure 4 As shown, the blocking cover 14 includes a horizontal cover wall and a vertical cover wall. A bead inlet 141 is provided on the vertical cover wall. The horizontal cover wall is in contact with the inner surface of the shell wall of the fixed housing 15. A gap exists between the vertical cover wall and the turntable 11, the gap being smaller than the length of the bead. The orthographic projection of the horizontal cover wall onto the fixed disk 12 covers the upper opening 1211 of the material passage 121. This prevents the beads in the receiving cavity from directly entering the sieve holes 111 without being screened; simultaneously, it prevents the vertical cover wall from obstructing the rotation of the turntable 11.

[0044] like Figure 5As shown, the screening component 13 includes a felt 131 and a felt mounting component 132 for mounting the felt 131. The felt mounting component 132 is connected to the horizontal cover wall. The felt 131 is positioned near the feed bead inlet 141 and lies horizontally in front of the feed bead inlet 141, so that the screen holes 111 carrying the material beads pass sequentially through the felt 131 and the upper opening 1211 of the material passage 121.

[0045] The bead embroidery device also includes a clamping assembly 20. The clamping assembly 20 includes a first clamping arm 21 and a second clamping arm 22 that are close to or far apart from each other, and the first clamping arm 21 and the second clamping arm 22 are positioned close to the lower opening 1212 of the material passage 121.

[0046] like Figures 11-14 As shown, the guide bead rod 30 is located between the first clamping arm 21 and the second clamping arm 22. The first clamping arm 21 and the second clamping arm 22 have clamping notches adapted to the guide bead rod 30. The first clamping arm 21 and the second clamping arm 22 are close together and abut against each other. At the current moment, the first clamping arm 21 and the second clamping arm 22 clamp the guide bead rod 30, that is, the first clamping arm 21 and the second clamping arm 22 are in a clamped state. When the first clamping arm 21 and the second clamping arm 22 move away from each other, the guide bead rod 30 is released. At the current moment, the first clamping arm 21 and the second clamping arm 22 are in an open state. This helps to keep the guide bead rod 30 stationary.

[0047] It should be noted that before one screen hole 111 aligns with the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 are in a clamping state. After one screen hole 111 is misaligned with the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 are in an open state until the next screen hole 111 aligns with the upper opening 1211 of the material passage 121, at which point the first clamping arm 21 and the second clamping arm 22 switch back to the clamping state. This arrangement maximizes the time that the first clamping arm 21 and the second clamping arm 22 hold the guide bead rod 30 and shortens the opening time, helping to keep the guide bead rod 30 stationary.

[0048] like Figure 12As shown, a first screen hole 111a, a second screen hole 111b, and a third screen hole 111c are provided on the circumference of the turntable 11, arranged sequentially in the rotation direction of the turntable 11. Before the first screen hole 111a aligns with the upper opening 1211 of the material passage 121 after passing through the screening element 13, the first clamping arm 21 and the second clamping arm 22 are in a clamping state. When the first screen hole 111a aligns with the upper opening 1211 of the material passage 121, the material beads located in the first screen hole 111a enter the material passage 121 and are then fitted onto the guide bead rod 30. After the first screen hole 111a is misaligned with the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 switch from the clamping state to the open state. Meanwhile, the second screen hole 111b approaches the screening element 13, then passes through the screening element 13, and approaches the upper opening 1211 of the material passage 121. Before the second screen hole 111b aligns directly with the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 switch from the open state to the clamping state. When the second screen hole 111b aligns directly with the upper opening 1211 of the material passage 121, the beads located in the second screen hole 111b enter the material passage 121 and are then placed on the guide bead rod 30. After the second screen hole 111b is misaligned from the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 switch from the clamping state to the open state. At the same time, the third screen hole 111c approaches the screening element 13, then passes through the screening element 13, and approaches the upper opening 1211 of the material passage 121. Until the third screen hole 111c is directly aligned with the upper opening 1211 of the material passage 121, the first clamping arm 21 and the second clamping arm 22 switch from the open state to the clamping state.

[0049] To enable the first clamping arm 21 and the second clamping arm 22 to intermittently switch between an open state and a clamping state, the clamping assembly 20 also includes a cam intermittent transmission structure, which drives the first clamping arm 21 or the second clamping arm 22 to move. The first clamping arm 21 is provided with a first engaging portion 213, and the second clamping arm 22 is provided with a second engaging portion 223 that engages with the first engaging portion 213. When one of the first clamping arm 21 and the second clamping arm 22 moves, the other moves through the engagement of the first engaging portion 213 and the second engaging portion 223.

[0050] like Figure 12As shown, the first clamping arm 21 is elongated and includes a first clamping end 211 and a first end 212. A first engaging portion 213, or first engaging tooth, is provided between the first clamping end 211 and the first end 212. The second clamping arm 22 includes a second clamping end 221 and a second end 222. A second engaging portion 223, or second engaging tooth, is provided at the second end 222. The second engaging tooth engages with the first engaging tooth.

[0051] The intermittent cam transmission structure includes, but is not limited to, a driving gear 26, a driven gear 25, a mounting shaft 27, a star cam 24, and a lever 23. The star cam 24 has N radially extending protrusions in the circumferential direction, where N is a positive integer. These N protrusions can be arranged at equal or non-equal intervals in the circumferential direction; preferably, they are arranged at equal intervals. The driven gear 25 is coaxially mounted with the star cam 24 and is fitted onto the mounting shaft 27. The driving gear 26 meshes with the driven gear 25. The lever 23 is located between the star cam 24 and the first clamping arm 21. The rotation of the star cam 24 causes the protrusion to intermittently drive the lever 23 to move, thereby causing the first clamping arm 21 to move intermittently.

[0052] like Figure 12 and Figure 14 As shown, the clamping assembly 20 also includes a support frame 29 and a guide tube 28. The support frame 29 is L-shaped and includes a first support plate and a second support plate. The guide tube 28 is mounted on the first support plate, and its axis intersects with the first end 212. The lever 23 passes through the guide tube 28. The middle parts of the first clamping arm 21 and the middle parts of the second clamping arm 22 are hinged to the second support plate. The first clamping end 211 and the second clamping end 221 are connected by a return spring. That is, after the first clamping end 211 and the second clamping end 221 are opened, the return spring can drive the first clamping end 211 and the second clamping end 221 to move closer to each other.

[0053] The transmission principle of the intermittent cam transmission structure is as follows: The driving gear 26 rotates, driving the driven gear 25 to rotate, thereby the convex part of the star cam 24 drives the lever 23 to move along the axis of the guide tube 28. The lever 23 engages with the first end 212 of the first clamping arm 21, causing the first clamping arm 21 to swing. The first clamping arm 21 drives the second clamping arm 22 to move through the first and second meshing teeth, thereby realizing that the first clamping arm 21 and the second clamping arm 22 are in the open state. Then, under the action of the return spring, the first clamping end 211 and the second clamping end 221 are driven to move closer to each other, and the first clamping arm 21 and the second clamping arm 22 are in the clamping state. At the same time, the swinging first clamping arm 21 drives the lever 23 to move in the opposite direction, returning to its initial position.

[0054] By ensuring that the number of protrusions is equal to the number of screen holes 111, the first clamping arm 21 and the second clamping arm 22 can be kept in an open state before each screen hole 111 is aligned with the upper opening 1211 of the material passage 121.

[0055] In some embodiments, the number of sieve holes 111 is N-1. That is, the number of sieve holes 111 is one less than the number of protrusions. This increases the spacing between two adjacent beads on the guide rod 30, preventing the beads on the guide rod 30 from being too densely packed. Of course, it is understood that the number of sieve holes 111 is two less than the number of protrusions, or three less than the number of protrusions.

[0056] The first end 212 can be configured as a wheel, so that rigid collisions are avoided when the first end 212 contacts the lever 23, which helps to reduce the wear of the first end 212 and the lever 23.

[0057] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or switching positional relationships are based on the orientation or switching positional relationships shown in the accompanying drawings. These are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "frame" and "layout" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "frame" or "layout" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0058] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A bead embroidery device, characterized in that, include: The material cylinder mechanism (10) includes a screening element (13) and a turntable (11) and a fixed plate (12) arranged on the upper and lower sides. The turntable (11) is provided with a plurality of sieve holes (111) for the material beads to pass through. The plurality of sieve holes (111) are arranged in a ring. The depth of the sieve holes (111) is less than the length of the material beads. The fixed plate (12) is provided with a material passage (121) for the screened material beads to pass through. The screening element (13) is arranged close to the turntable (11). The turntable (11) rotates so that each of the sieve holes (111) passes through the screening element (13) and the material passage (121) in sequence. The clamping assembly (20) includes a first clamping arm (21) and a second clamping arm (22) that are close to or far from each other, the first clamping arm (21) and the second clamping arm (22) being disposed near the lower opening (1212) of the feed channel (121).

2. The bead embroidery device according to claim 1, characterized in that, The clamping assembly (20) further includes a cam intermittent transmission structure, which drives the first clamping arm (21) or the second clamping arm (22) to move.

3. The bead embroidery device according to claim 2, characterized in that, The first clamping arm (21) is provided with a first engaging part (213), and the second clamping arm (22) is provided with a second engaging part (223) that engages with the first engaging part (213). When one of the first clamping arm (21) and the second clamping arm (22) moves, it engages with the second clamping part (223) through the first engaging part (213), thereby driving the other to move.

4. The bead embroidery device according to claim 3, characterized in that, The N sieve holes (111) are arranged in a ring, where N is a positive integer. The intermittent cam transmission structure includes a star cam (24) and a lever (23). The star cam (24) has N radially extending protrusions in the circumferential direction. The lever (23) is located between the star cam (24) and the first clamping arm (21). The rotation of the star-shaped cam (24) causes the protrusion to intermittently drive the lever (23) to move, thereby causing the first clamping arm (21) to move intermittently.

5. The bead embroidery device according to claim 4, characterized in that, The first clamping arm (21) is elongated and includes a first clamping end (211), a first end (212) and a first engaging portion (213) located between the first clamping end (211) and the first end (212). The first end (212) is used to abut against the lever (23).

6. The bead embroidery device according to claim 5, characterized in that, The second clamping arm (22) includes a second clamping end (221), and the second clamping end (221) and the first clamping end (211) are connected by a return spring.

7. The bead embroidery device according to claim 2, characterized in that, The number of sieve holes (111) is N-1.

8. The bead embroidery device according to any one of claims 1-7, characterized in that, It also includes a guide rod (30) extending vertically, the guide rod (30) being located below the lower opening (1212) of the material passage (121), and the distance between the end of the guide rod (30) and the lower opening (1212) being less than the length of the material bead.

9. The bead embroidery device according to any one of claims 1-7, characterized in that, Before one of the screen holes (111) is aligned with the upper opening (1211) of the material passage (121), the first clamping arm (21) and the second clamping arm (22) are in a clamping state. After one of the screen holes (111) is misaligned with the upper opening (1211) of the material passage (121), the first clamping arm (21) and the second clamping arm (22) are in an open state until the next screen hole (111) is aligned with the upper opening (1211) of the material passage (121), the first clamping arm (21) and the second clamping arm (22) switch back to the clamping state.

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