Double-bead or multi-bead conveying mechanism capable of conveniently switching beads

Abstract

According to the double-bead or multi-bead conveying mechanism convenient for bead switching, when a switching block switches a corresponding hole site, a first driving structure enables other hole sites on the switching block to slide to a vacant station of a bead feeding structure or a supporting table top, the first driving structure drives a bead feeding clamping plate to advance or retreat, and the other hole sites on the switching block slide to the vacant station or the supporting table top of the bead feeding structure; when the hole site of the switching block moves between the first supporting surface and the supporting table top or when the hole site of the switching block moves between the second supporting surface and the supporting table top, the hole site of the switching block always moves from the high surface to the low surface, so that the beads in the hole site of the switching block always move from the high surface to the low surface, and the beads in the hole site of the switching block are not prone to falling off. The fluency of the switching block during hole position switching can be effectively improved, and beads can be effectively prevented from being clamped and damaged in the switching process. The mechanism and the method provided by the utility model can be suitable for double-bead and multi-bead feeding, and can also be combined with other multi-bead feeding mechanisms.

Description

TECHNICAL FIELD

[0001] The utility model relates to a double-bead or multi-bead conveying mechanism capable of conveniently switching beads. BACKGROUND

[0002] In order to increase the color change of beads, the bead conveying mechanism is usually provided with double beads or multiple beads. The double-bead or multi-bead conveying mechanism is provided with a switching block capable of switching beads. The switching block is provided with two or more groups of bead hole positions. Different bead hole positions can be switched by rotating the switching block. The required bead hole position is switched from the idle position to the bead receiving position of the bead clamp, so that the clamping plate of the bead clamp can receive beads from the bead receiving position and send the beads. When the required bead hole position is switched to the bead receiving position, the beads in the hole position located at the bead receiving position in the first place need to be switched to the idle position. The idle position is usually provided on one side of the bead sending clamping plate. The idle position is provided with a support table surface substantially flush with the bead sending clamping plate.

[0003] When the switching block switches beads, the switching block drives the beads in the hole position to reciprocate across the bead plate above the support table surface of the idle position. In actual use, due to the error of product processing, it is impossible to ensure that the batch-produced bead sending clamping plate is completely flush with the support table surface of the idle position. Therefore, there is a step difference between the bead sending clamping plate and the support table surface of the idle position. When the switching block drives the beads in the hole position to reciprocate on the bead sending clamping plate from the lower plate surface to the higher plate surface, the beads are easily stuck, even damaged or broken, increasing the difficulty of the switching block switching the corresponding hole position beads. SUMMARY

[0004] The utility model discloses a double-bead or multi-bead conveying mechanism capable of conveniently switching beads to solve the problem that the existing double-bead or multi-bead conveying mechanism is not smooth when switching beads and the beads are easily damaged or scratched during the switching process.

[0005] The utility model discloses a technical scheme that solves the existing problems: a double-bead or multi-bead conveying mechanism capable of conveniently switching beads, comprising a bead conveying structure capable of conveying beads, wherein the bead conveying structure is provided with a bead receiving station and an idle station on the movement path of a bead clamp plate, the bead conveying structure is provided with an idle support platform on the side of the bead receiving station, the bead conveying structure is provided with a first driving structure for driving the bead clamp plate to reciprocally convey beads, as an improvement, the bead conveying structure is provided with a switching block, the switching block is provided with at least two bead accommodating holes above the bead clamp plate, the switching block is provided with a second driving structure for driving the switching block to switch any corresponding hole to enter or leave the bead receiving station, the bead clamp plate is sequentially provided with a first support surface, a second support surface from front to back, a falling transition surface is arranged between the first support surface and the second support surface, the height of the first support surface, the support platform and the second support surface is sequentially reduced or increased, the switching block can be relatively rotated or relatively slid on the bottom plate of the bead conveying structure to switch any corresponding hole to enter the bead receiving station or to leave the bead receiving station and correspondingly enter the support platform or the idle station, when the switching block switches the corresponding hole, the first driving structure drives the bead clamp plate to move, so that the hole of the switching block always moves from a surface with a high height to a surface with a low height when the hole moves between the first support surface and the support platform or when the hole moves between the second support surface and the support platform.

[0006] As a further improvement, the height difference between the first support surface, the support platform and the second support surface is 0.01mm-0.15mm.

[0007] As a further improvement, the switching block can be rotatably arranged on the bottom plate of the bead conveying structure.

[0008] As a further improvement, the second driving structure comprises a driver, a sliding block assembly arranged on the bead conveying structure, a sliding assembly arranged on the bottom plate of the bead conveying structure, a transmission arm connecting the sliding block assembly and the sliding assembly, and a convex shaft and a strip-shaped guide hole arranged between the sliding assembly and the switching block and capable of driving the switching block to switch the hole.

[0009] As a further improvement, the height of the first support surface, the support platform and the second support surface is sequentially increased.

[0010] As a further improvement, the sliding assembly comprises a guide block slidably arranged on the bottom plate, a guide groove or / and a limiting groove arranged on the bottom plate and matched with the guide block.

[0011] As a further improvement, the sliding assembly further comprises a switching plate arranged on the bottom of the bead clamp plate at the bead receiving station, the switching plate is provided with a stepped support surface corresponding to the holes of the switching block, and the stepped support surface is sequentially increased from front to back.

[0012] As a further improvement, the first support surface, the second support surface is provided on the pearl passing plate in the middle of the pearl feeding clamp, the both sides of the pearl feeding clamp are lower than the upper surface of the pearl passing plate on the corresponding side of the support table, the bottom plate is provided with a support plate at the support table, the upper end surface of the support plate constitutes the support table, the support plate is provided with an extension plate which covers the side surface of the corresponding side of the pearl feeding clamp, and the support table is matched with the first and second support surfaces of the pearl passing plate through the extension plate.

[0013] As a further improvement, the switching block is provided with two hole positions, and the hole position of the switching block is provided with an open slot on one side.

[0014] As a further improvement, the pearl passing plate is provided on the clamping arm of the pearl feeding clamp, and the front end of the first support surface is provided with an inclined guide surface towards the clamping arm.

[0015] Compared with the prior art, the mechanism of the utility model is characterized in that the first support surface and the second support surface are sequentially arranged on the pearl feeding clamp from front to back, the falling transition surface is arranged between the first support surface and the second support surface, the heights of the first support surface, the support table and the second support surface are sequentially reduced or increased, the switching block is relatively rotatable or relatively slidable, and is arranged on the bottom plate of the pearl feeding structure to switch any corresponding hole position into the pearl receiving position; or the switching block is arranged to switch any corresponding hole out of the pearl receiving position and correspondingly into the support table or the idle position; the switching block switches the corresponding hole position, the first driving structure moves other hole positions on the switching block to the idle position of the pearl feeding structure or the support table, the first driving structure drives the pearl feeding clamp to advance or retreat, and the hole position of the switching block moves between the first support surface and the support table or between the second support surface and the support table, so that the pearl in the hole position of the switching block always moves from the high surface to the low surface, the smoothness of the switching block when switching the hole position is effectively increased, and the pearl is effectively prevented from being stuck or damaged during the switching process.

[0016] The mechanism of the utility model can be applied to double-pearl and multi-pearl pearl feeding and can be combined with other multi-pearl pearl feeding mechanisms. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the switching block after being disassembled in perspective.

[0019] Figure 3 It is Figure 2 a structural schematic diagram of the place a of the utility model.

[0020] Figure 4Is the schematic diagram of the inclined viewing angle of the utility model from the top view.

[0021] Figure 5 Is the schematic diagram of the disengagement of the switching block and the sliding assembly of the utility model.

[0022] Figure 6 Is Figure 4 The enlarged schematic diagram at b of

[0023] Figure 7 Is Figure 5 The enlarged schematic diagram at c of

[0024] Figure 8 Is the schematic diagram of the inclined viewing angle of the utility model from the top view

[0025] Figure 9 Is Figure 8 The enlarged schematic diagram at d of

[0026] Figure 10 Is Figure 9 The schematic diagram after removing the bottom plate.

[0027] Figure 11 Is the schematic diagram of A beads at the bead receiving station.

[0028] Figure 12 Is the schematic diagram of A beads at the bead receiving station.

[0029] Figure 13 Is the schematic diagram of B beads at the bead receiving station.

[0030] Bead feeding clamp plate 1, clamp arm 10, first support surface 11, second support surface 12, bottom plate 13, guide groove 14, bead passing plate 15, inclined guide surface 16, support table surface 2, support plate 21, extension plate 22, first driving structure 3, switching block 4, hole position 41, strip-shaped guide hole 42, open slot 43, second driving structure 5, sliding block assembly 51, transmission arm 52, sliding assembly 6, protruding shaft 61, guide block 62, switching plate 63, stepped support surface 64. DETAILED DESCRIPTION

[0031] Referring to Figures 1-13A double or multi-bead conveying mechanism capable of facilitating switching of beads, comprising a bead conveying structure capable of conveying beads, the bead conveying structure being provided with a bead receiving station and an empty station on a movement path of a bead conveying clamp plate 1. The bead conveying structure is provided with an empty support table 2 on one side of the bead receiving station. The bead conveying structure is provided with a first driving structure 3 for driving the bead conveying clamp plate 1 to reciprocally convey beads. The bead conveying structure is provided with a switching block 4, the switching block 4 being provided with at least two bead accommodating holes 41 above the bead conveying clamp plate 1, the bead accommodating holes 41 being normally used for positioning and guiding a bead string. The switching block 4 is provided with a second driving structure 5 for driving the switching block 4 to switch any corresponding bead accommodating hole 41 to enter or leave the bead receiving station. The second driving structure 5 is used for driving the corresponding bead accommodating hole 41 on the switching block 4 to enter the bead receiving station, or simultaneously moving a corresponding bead accommodating hole 41 originally located at the bead receiving station out of the bead receiving station. The bead conveying clamp plate 1 is sequentially provided with a first support surface 11, a second support surface 12 from front to back. A stepped transition surface 13 is provided between the first support surface 11 and the second support surface 12. The heights of the first support surface 11, the support table 2 and the second support surface 12 are sequentially reduced or increased. The switching block 4 can be relatively rotated or relatively slid on a bottom plate 13 of the bead conveying structure to switch any corresponding hole to enter the bead receiving station or to leave the bead receiving station, i.e. to slide out of the bead receiving station from the corresponding hole, and to enter the support table 2 or the empty station. When the switching block 4 switches the corresponding bead accommodating hole 41, the first driving structure 3 drives the bead conveying clamp plate 1 to move, so that the bead accommodating hole 41 of the switching block 4 always moves from a high surface to a low surface when moving between the first support surface 11 and the support table 2, or when moving between the second support surface 12 and the support table 2.

[0032] The bead receiving station is used for the bead conveying clamp plate 1 to receive beads from the bead receiving station. A bead string is normally suspended above the bead receiving station, and the bead string in the present application is positioned and guided by the bead accommodating holes. The empty station is used for the corresponding bead accommodating hole 41 of the switching block 4 to temporarily avoid the bead receiving station.

[0033] The bead accommodating hole 41 of the switching block 4 is provided with an open slot 43 on one side, which can be used for observing the condition of the lower beads and unblocking the beads.

[0034] The basic structure of the bead conveying clamp plate 1 and the first driving structure 3 of the bead conveying structure can completely adopt the existing technical structure.

[0035] The height difference between the first support surface 11, the support table 2 and the second support surface 12 is 0.01mm-0.15mm, and the preferred height difference in the present embodiment is 0.05mm.

[0036] In order to facilitate implementation, the switching block 4 is rotatably arranged on the bottom plate 13 of the bead conveying structure as preferred.

[0037] The second driving structure 5 comprises a driver (not shown in the figure), a sliding block assembly 51 arranged on the bead feeding structure, a sliding assembly 6 arranged on the bottom plate 13 of the bead feeding structure, a transmission arm 52 connecting the sliding block assembly 51 and the sliding assembly 6, and a convex shaft 61 and a strip-shaped guide hole 42 arranged between the sliding assembly 6 and the switching block 4, and the strip-shaped guide hole 42 is arranged on the switching block 4, and the convex shaft 61 is arranged on the sliding assembly 6. The sliding assembly 6 of the second driving structure 5 is driven to slide by the driver through the sliding block assembly 51, and the guide shaft of the sliding assembly 6 is driven to rotate or slide by cooperating the convex shaft 61 and the strip-shaped guide hole 42 on the switching block 4. In the embodiment, the switching block 4 is preferably arranged on the bottom plate 13 by rotating the shaft, so that the convex shaft 61 on the sliding assembly 6 cooperates with the strip-shaped guide hole 42 to drive the switching block 4 to rotate, so that the hole position 41 on the switching block 4 is switched.

[0038] The driver of the second driving structure 5 can be a motor, a pneumatic rod, a hydraulic rod and other prior art structures, and the necessary mechanical conversion structure is combined to convert the action of the driver into the sliding action required by the sliding block assembly 51, and then the sliding action is transmitted to the sliding assembly 6 through the transmission arm 52.

[0039] In order to ensure the stability of the sliding track of the sliding assembly 6, the sliding assembly 6 further comprises a guide block 62 slidably arranged on the bottom plate 13, a guide groove 14 or / and a limiting groove arranged on the bottom plate 13 and cooperating with the guide block 62, and the guide groove 14 or / and the limiting groove can be combined to realize one groove. The cooperation of the guide block 62 and the guide groove or / and the limiting groove can optimize the sliding stroke and sliding direction of the sliding assembly 6.

[0040] As an option of the embodiment, the heights of the first support surface 11, the support table surface 2 and the second support surface 12 are sequentially increased.

[0041] The sliding assembly 6 further comprises a switching plate 63 arranged at the bead receiving position at the bottom of the bead clamping plate 1, and the switching plate 63 is provided with a stepped support surface 64 corresponding to the hole position 41 of the switching block 4, and the stepped support surface is sequentially increased from front to back. By arranging the corresponding different stepped support surfaces 64 on the switching plate 63 to form the bottom plate supporting the beads at the bead receiving position, different lengths of beads can be accommodated, and different lengths of beads can be conveyed.

[0042] The first support surface 11 and the second support surface 12 are arranged on the pearl passing plate 15 arranged in the middle of the pearl feeding clamp plate 1, and the two sides of the pearl feeding clamp plate 1 are arranged to be lower than the upper surface of the pearl passing plate 15 on the corresponding side of the support table surface 2; the bottom plate 13 is arranged with the support plate 21 at the support table surface 2, the upper end surface of the support plate 21 constitutes the support table surface 2, the support plate 21 is arranged with the extension plate 22 arranged on the side of the corresponding side of the pearl feeding clamp plate 1, and the support table surface 2 is matched with the first support surface and the second support surface of the pearl passing plate 15 through the extension plate. The structure of the support plate 21 is convenient for production and manufacturing, and the gap at the matching position of the extension plate 22 and the pearl passing plate 15 can be reduced, so that the switching block 4 is conveniently slid to drive the pearls in the hole position 41 to smoothly slide between the support table surface 2 and the first support surface 11.

[0043] As an embodiment, the switching block 4 is arranged with two hole positions 41. In order to facilitate description, the hole position close to the front side is the A hole position for conveying A pearls, and the hole position close to the rear side is the B hole position for conveying B pearls.

[0044] The pearl passing plate 15 is arranged to protrude from the clamping arm 10 of the pearl feeding clamp plate 1, and the front end of the first support surface 11 is arranged with the inclined guide surface 16 towards the clamping arm, so that the support plate 21 is matched with the pearl passing plate 15 through the extension plate 22 to cover the gap on the pearl feeding clamp plate 1.

[0045] In order to facilitate understanding of the present application, the method for switching pearls is also disclosed.

[0046] The method can use the conveying mechanism of any one of the above schemes or any combination of any scheme, the second driving structure 5 drives the switching block 4 to slide or rotate, according to the need of embroidering pearls, the corresponding hole position 41 on the switching block 4 enters the pearl receiving position of the pearl feeding structure, the second driving structure 5 drives other hole positions 41 on the switching block 4 to slide to the idle position of the pearl feeding structure or the support table surface 2, when the switching block 4 switches the hole position 41, the first driving structure 3 drives the pearl feeding clamp plate 1 to move forward or backward, so that the hole position 41 of the switching block 4 always moves from the high surface to the low surface when moving between the first support surface 11 and the support table surface 2 or when moving between the second support surface 12 and the support table surface 2.

[0047] The heights of the first support surface 11, the support table surface 2 and the second support surface 12 are sequentially increased; the second driving structure 5 drives the switching block 4 to slide or rotate, and drives the corresponding hole position 41 on the switching block 4 to enter the pearl receiving position of the pearl feeding structure from the support table surface 2, the first driving structure 3 drives the pearl feeding clamp plate 1 to move backward, so that the first support surface 11 is located at the pearl receiving position; the second driving structure 5 drives the switching block 4 to slide or rotate, and drives the corresponding hole position 41 on the switching block 4 to enter the pearl receiving position of the pearl feeding structure from the idle position, and the first driving structure 3 drives the pearl feeding clamp plate 1 to move forward, so that the second support surface 12 is located at the pearl receiving position.

[0048] The second driving structure 5 drives the switching block 4 to rotate the switching hole position 41.

[0049] For the convenience of understanding, the method of the embodiment takes two beads as an example. More than two beads can be switched by referring to the switching of two beads. For the specific method of switching beads, see Figures 11-12 , Figure 11 In the above-mentioned state, the A bead is located at the bead receiving station, and the B bead is located at the idle station. When the B bead needs to be transported, the B bead is switched from the idle station to the bead receiving station. The second driving structure 5 drives the sliding assembly 6 to slide through the slider assembly 51 and the transmission arm 52. The convex shaft 61 on the sliding assembly 6 drives the switching block 4 to rotate through the strip-shaped guide hole 42 on the switching block 4, so that the B hole position is switched to the bead receiving station, Figure 12 is the intermediate state, Figure 13 is the state in which the B hole position has been switched to the bead receiving station. In the embodiment, the heights of the first support surface 11, the support platform 2, and the second support surface 12 are taken as an example of being raised in turn. Before or at the latest before the A bead contacts the support platform 2, the first driving structure 3 drives the bead feeding clamp plate 1 to slide forward, so that the second support surface 12 of the bead passing plate 15 of the bead feeding clamp plate 1 is located at the bottom of the A hole position (i.e., at the bead receiving station), and the bead in the A hole position is lifted. The A hole position gradually slides from the second support surface 12 with a higher height to the support platform 2 with a lower height along with the rotation of the switching block 4. The rotation of the switching block 4 continues until the B hole position completely enters the bead receiving station, so that the B bead can be transported, and the switching from the A bead to the B bead is completed. When the A bead needs to be transported again, the second driving structure 5 drives the sliding assembly 6 to slide through the slider assembly 51 and the transmission arm 52. The convex shaft 61 on the sliding assembly 6 drives the switching block 4 to rotate through the strip-shaped guide hole 42 on the switching block 4, so that the A hole position is switched to the bead receiving station. Before or at the latest before the A bead contacts the bead passing plate 15 of the bead feeding clamp plate 1, the first driving structure 3 drives the bead feeding clamp plate 1 to slide backward, so that the first support surface 11 of the bead passing plate 15 of the bead feeding clamp plate 1 is located at the bead receiving station. The A hole position gradually slides from the support platform 2 with a higher height to the first support surface 11 with a lower height along with the rotation of the switching block 4, until the A hole position completely enters the bead receiving station, so that the A bead can be transported, and the switching from the B bead to the A bead is completed. At this time, the B hole position is switched to the idle station, as shown in Figure 11 .

[0050] If the height of the first support surface 11, the support table surface 2 and the second support surface 12 is gradually reduced, when the switching of the A and B beads is performed, the first driving structure 3 is required to drive the bead feeding clamp plate 1 to advance or retreat, so that the hole position 41 of the switching block 4 is always moved from the high surface to the low surface when the hole position 41 of the switching block 4 is moved between the first support surface 11 and the support table surface 2 or when the hole position 41 of the switching block 4 is moved between the second support surface 12 and the support table surface 2.

[0051] The second driving structure 5 comprises a driver, a sliding block assembly arranged on the bead feeding structure, a sliding assembly 6 arranged on the bottom plate 13 of the bead feeding structure, a transmission arm 52 connecting the sliding block assembly 51 and the sliding assembly 6, and a convex shaft 61 and a guide hole 42 arranged between the sliding assembly 6 and the switching block 4, which can drive the switching block 4 to act on the hole position 41. The sliding assembly further comprises a switching plate 63 arranged at the bead receiving position on the bottom of the bead feeding clamp plate 1, wherein the switching plate is provided with a stepped support surface 64 corresponding to the hole position 41 of the switching block 4. The stepped support surface 64 is gradually raised from front to back. When the second driving structure 5 drives the switching block 4 to replace the corresponding hole position 41 into the bead receiving position, the corresponding stepped support surface of the hole position 41 is also driven into the bead receiving position. When the A and B beads are switched, the switching plate 63 on the sliding assembly 6 slides with the sliding assembly 6, and the stepped support surface 64 on the switching plate 63 also corresponds to the corresponding hole position. Because the heights of the stepped support surfaces are different, the stepped support surfaces can be used to convey beads of different heights.

[0052] In the front, back, left, right, up and down directions of the bead feeding structure, the direction of the bead feeding clamp plate 1 advancing to feed beads is front, the direction of the bead feeding clamp plate 1 retreating is back, and the left, right, up and down directions are the left, right, up and down directions of a person standing in front of the bead feeding structure.

Claims

1. A double-bead or multi-bead conveying mechanism for easy bead switching, comprising a bead-feeding structure for conveying beads, wherein the bead-feeding structure is provided with a bead-receiving station and an idle station on the movement path of the bead-feeding clamp, and an idle support platform is provided on one side of the bead-receiving station of the bead-feeding structure; the bead-feeding structure is provided with a first driving structure for driving the bead-feeding clamp to reciprocate in feeding beads, characterized in that: The bead feeding structure is provided with a switching block, the switching block is provided with at least two bead accommodating hole positions above the bead feeding clamp plate, the switching block is provided with a second driving structure for driving the switching block to switch any corresponding hole position to enter or leave the bead receiving station; the bead feeding clamp plate is sequentially provided with a first support surface, a second support surface from front to back, a falling transition surface is arranged between the first support surface and the second support surface, the heights of the first support surface, the support surface and the second support surface are sequentially reduced or increased; the switching block is arranged on the bottom plate of the bead feeding structure to switch any corresponding hole position to enter the bead receiving station or to switch any corresponding hole to leave the bead receiving station and correspondingly enter the support surface or the idle station; when the switching block switches the corresponding hole position, the first driving structure drives the bead feeding clamp plate to move, so that the hole position of the switching block always moves from the high surface to the low surface when the hole position of the switching block moves between the first support surface and the support surface or when the hole position of the switching block moves between the second support surface and the support surface.

2. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The switching block is rotatably arranged on the bottom plate of the bead feeding structure.

3. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The second driving structure comprises a driver, a sliding block assembly arranged on the bead feeding structure, a sliding assembly arranged on the bottom plate of the bead feeding structure, a transmission arm connecting the sliding block assembly and the sliding assembly, and a convex shaft and a strip-shaped guide hole arranged between the sliding assembly and the switching block and capable of driving the switching block to move to switch the hole position.

4. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The heights of the first support surface, the support surface and the second support surface are sequentially increased.

5. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 3, wherein: The sliding assembly comprises a guide block slidably arranged on the bottom plate and a guide groove or / and a limiting groove arranged on the bottom plate and matched with the guide block.

6. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 3 or 5, wherein: The sliding assembly further comprises a switching plate arranged on the bottom of the bead feeding clamp plate at the bead receiving station, the switching plate is provided with a stepped support surface corresponding to the hole position of the switching block, and the stepped support surface is sequentially increased from front to back.

7. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The first support surface and the second support surface are arranged on the bead passing plate arranged in the middle of the bead feeding clamp plate, the corresponding side of the bead feeding clamp plate at least located on the support surface is lower than the upper plate surface of the bead passing plate, the bottom plate is provided with a support plate at the support surface, the upper end surface of the support plate constitutes the support surface, the support plate is provided with an extension plate arranged on the corresponding side of the bead feeding clamp plate, and the support surface is matched with the first and second support surfaces of the bead passing plate through the extension plate.

8. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The switching block is provided with two hole positions.

9. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 7, wherein: The bead passing plate is arranged on the clamping arm of the bead feeding clamp plate, and the front end of the first support surface is provided with an inclined guide surface towards the clamping arm.

10. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The height difference between the first support surface, the support surface and the second support surface is 0.01mm-0.15mm.

11. The dual or multiple bead delivery mechanism that can facilitate switching of beads of claim 1, wherein: The hole position of the switching block is provided with an open slot on one side.

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