Bobbin picking device and bobbin conveying apparatus

Abstract

This invention relates to a yarn pickup device and a yarn conveying device. The yarn pickup device includes an opening and closing drive mechanism and multiple opening and closing mechanisms. Each opening and closing mechanism includes a main body and an adjusting rod. The main body includes a closing part, an abutting protrusion, an adjusting protrusion, and a connecting protrusion. The closing part has a strip-shaped structure. The closing parts of the multiple opening and closing mechanisms are close to each other in the closed state. The abutting protrusion, adjusting protrusion, and connecting protrusion are arranged sequentially on the closing part. Along the direction close to the adjusting protrusion, the protrusion height of the abutting protrusion gradually increases. The protrusion height of the adjusting protrusion is higher than that of the abutting protrusion. The adjusting protrusion has a receiving hole, and the adjusting rod passes through the receiving hole. The adjusting rod extends out of the highest point of the adjusting protrusion, and the extension length is adjustable. This allows the magnitude of the force exerted by the yarn pickup device on the yarn to be adjusted by changing the abutting position, avoiding the problem of instability and easy yarn drop when picking up yarn when the traditional pickup mechanism is severely worn.

Description

Technical Field

[0001] This invention relates to the field of textile machinery and equipment technology, and in particular to a yarn pick-up device and a yarn conveying device. Background Technology

[0002] To improve production efficiency and reduce labor intensity, automation of packaging and logistics has become an urgent need for textile enterprises. Automated packaging equipment can perform tasks such as yarn sorting, palletizing, weighing, and label printing on packaging boxes. Currently, to meet market demand and control costs, the weight of single yarn spools is gradually increasing. Heavier single yarn spools cause more severe wear on the picking mechanism of automated packaging equipment, greatly increasing equipment maintenance costs. Moreover, the worn gripper mechanism is unstable when picking up yarn spools, easily causing yarn to fall and resulting in contaminated yarn, increasing the risk of mixed packaging and yarn mix-ups. In addition, the success rate of traditional picking mechanisms varies for yarn spools made of different materials; the picking rate for plastic yarn spools with smoother walls is lower than that for paper yarn spools with rougher walls. Summary of the Invention

[0003] Therefore, it is necessary to provide a yarn picking device and a yarn conveying equipment to solve the problem of instability when picking up yarn packages when the traditional picking mechanism is severely worn.

[0004] One objective of this invention is to provide a yarn pick-up device, the solution of which is as follows:

[0005] A yarn pick-up device includes an opening and closing drive mechanism and a plurality of opening and closing mechanisms, wherein the opening and closing drive mechanism is connected to the plurality of opening and closing mechanisms for driving the plurality of opening and closing mechanisms to close or open.

[0006] The opening and closing mechanism includes a main body and an adjusting rod. The main body includes a closing portion, an abutting protrusion, an adjusting protrusion, and a connecting protrusion. The closing portion is a strip-shaped structure. The closing portions of the multiple opening and closing mechanisms are close to each other in the closed state. The abutting protrusion, the adjusting protrusion, and the connecting protrusion are sequentially arranged on the closing portion along the extension direction of the closing portion. Along the direction close to the adjusting protrusion, the protrusion height of the abutting protrusion gradually increases overall. The maximum protrusion height of the adjusting protrusion is higher than the maximum protrusion height of the abutting protrusion. The connecting protrusion is connected to the opening and closing drive mechanism. The adjusting protrusion has a receiving hole that extends from the highest point of the adjusting protrusion toward the closing portion. The adjusting rod passes through the receiving hole and extends out of the highest point, and the length of the extension is adjustable.

[0007] In one embodiment, the extension direction of the adjusting rod is perpendicular to the extension direction of the closing portion.

[0008] In one embodiment, the opening and closing mechanism further includes a locking bolt, the adjusting protrusion has a threaded hole that mates with the locking bolt, the extending direction of the adjusting rod is perpendicular to the extending direction of the locking bolt, and the adjusting rod is tangent to the threaded hole, so that the adjusting rod can be pressed tightly after the locking bolt is tightened.

[0009] In one embodiment, the end of the adjusting rod extending out of the receiving hole is tapered.

[0010] In one embodiment, the taper design has a taper angle of 45° to 60°.

[0011] In one embodiment, the minimum length by which the adjusting rod can extend beyond the adjusting protrusion is 0.3 mm to 1 mm.

[0012] In one embodiment, the adjustment rod can extend out of the adjustment protrusion for a maximum length of 2mm to 3mm.

[0013] In one embodiment, the adjustable length of the adjusting rod is 0.3mm to 3mm.

[0014] In one embodiment, the main body has a plurality of abutting protrusions, which are arranged sequentially along the extension direction of the closing portion, and the highest protrusion height of the abutting protrusion increases as it approaches the adjusting protrusion.

[0015] In one embodiment, a first abutting groove is formed between adjacent abutting protrusions.

[0016] In one embodiment, a second abutment groove is formed between the abutment protrusion closest to the adjustment protrusion and the adjustment protrusion.

[0017] In one embodiment, the side of the abutting protrusion away from the closing portion is the abutting surface, and the abutting surface is provided with anti-slip texture.

[0018] In one embodiment, the number of opening and closing mechanisms is three or more.

[0019] One objective of this invention is to provide a yarn bobbin conveying device, the solution of which is as follows:

[0020] A yarn feeding device, characterized in that it includes a transfer device and a yarn picking device as described in any of the above embodiments, wherein the transfer device is connected to the yarn picking device for driving the yarn picking device to move.

[0021] Compared with traditional solutions, the above-mentioned yarn pick-up device and yarn conveying equipment have the following advantages:

[0022] The aforementioned yarn package pickup device includes an opening and closing drive mechanism and multiple opening and closing mechanisms. When the opening and closing drive mechanism drives the multiple opening and closing mechanisms to close, the opening and closing mechanisms can extend into the yarn tube of the yarn package. When the opening and closing drive mechanism drives the multiple opening and closing mechanisms to open, the end of the closed part near the abutting protrusion expands outward, so that the abutting protrusion abuts against the inner wall of the yarn package tube. The opening and closing mechanism adjustment rod passes through the receiving hole of the adjustment protrusion and extends to the highest point of the adjustment protrusion. When the opening and closing mechanism is in the open state, the adjustment rod abuts against the inner wall of the yarn tube and cooperates with the abutting protrusion to pick up the yarn package. Furthermore, the extension length of the adjusting rod is adjustable, which allows the force exerted by the yarn pick-up device on the yarn to be adjusted by changing the contact position. This avoids the problem of instability and yarn drop when picking up yarn when the traditional pick-up mechanism is severely worn. Alternatively, the extension length of the adjusting rod can be adjusted according to the smoothness of the yarn tube, improving the stability of automatic packaging and stacking of yarn, reducing the generation of defective products, reducing the risk of mixed packing and mis-packing, and reducing the need to replace the pick-up mechanism due to severe wear, thus saving equipment maintenance costs.

[0023] The above-mentioned yarn conveying equipment includes the yarn picking device of any of the above embodiments, and thus can achieve the corresponding technical effects. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of three opening and closing mechanisms in the closed state of a yarn picking device according to an embodiment, wherein the left and right opening and closing mechanisms are shown in cross-sectional form;

[0025] Figure 2 This is a schematic diagram of a single opening and closing mechanism, in which the abutting protrusion, adjusting protrusion and connecting protrusion are shown in cross-section;

[0026] Figure 3 A front view of a single opening and closing mechanism;

[0027] Figure 4 A top view of a single opening and closing mechanism.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Opening and closing mechanism; 110. Main body; 111. Closing part; 112. Abutting protrusion; 1121. First abutting groove; 1122. Second abutting groove; 1123. Abutting surface; 113. Adjusting protrusion; 114. Connecting protrusion; 1131. Accommodating hole; 1132. Threaded hole; 120. Adjusting rod. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] An embodiment of the yarn pickup device of the present invention includes an opening and closing drive mechanism and a plurality of opening and closing mechanisms. The opening and closing drive mechanism is connected to the plurality of opening and closing mechanisms to drive the plurality of opening and closing mechanisms to close or open.

[0035] like Figures 1-3 As shown, the opening and closing mechanism 100 includes a main body 110 and an adjusting rod 120. The main body 110 includes a closing part 111, an abutting protrusion 112, an adjusting protrusion 113, and a connecting protrusion 114. The closing part 111 has a strip-shaped structure. The closing parts 111 of the multiple opening and closing mechanisms 100 are close to each other in the closed state. The abutting protrusion 112, the adjusting protrusion 113, and the connecting protrusion 114 are arranged sequentially on the closing part 111 along the extending direction of the closing part 111.

[0036] Along the direction approaching the adjusting protrusion 113, the height of the abutting protrusion 112 gradually increases overall. The maximum height of the adjusting protrusion 113 is higher than the maximum height of the abutting protrusion 112.

[0037] The adjusting protrusion 113 has a receiving hole 1131, which extends from the highest point of the adjusting protrusion 113 to the closing part 111. The adjusting rod 120 passes through the receiving hole 1131 and extends out of the highest point of the adjusting protrusion 113, and the length of the extension is adjustable. The connecting protrusion 114 is connected to the opening and closing drive mechanism.

[0038] The aforementioned yarn package pickup device includes an opening and closing drive mechanism and multiple opening and closing mechanisms 100. When the opening and closing drive mechanism drives the multiple opening and closing mechanisms 100 to close, the opening and closing mechanisms 100 can extend into the yarn tube of the yarn package. When the opening and closing drive mechanism drives the multiple opening and closing mechanisms 100 to open, the end of the closing part 111 near the abutting protrusion 112 expands outward, so that the abutting protrusion 112 abuts against the inner wall of the yarn package tube. The adjusting rod 120 of the opening and closing mechanism 100 passes through the receiving hole 1131 of the adjusting protrusion 113 and extends out of the highest point of the adjusting protrusion 113. When the opening and closing mechanism 100 is in the open state, the adjusting rod 120 abuts against the inner wall of the yarn tube and cooperates with the abutting protrusion 112 to pick up the yarn package. Furthermore, the extension length of the adjusting rod 120 is adjustable, which allows the force exerted by the yarn pick-up device on the yarn to be adjusted by changing the contact position. This avoids the problem of unstable yarn picking and easy yarn drop when the traditional picking mechanism is severely worn. Alternatively, the extension length of the adjusting rod 120 can be adjusted according to the smoothness of the yarn tube, improving the stability of automatic packaging and stacking of yarn, reducing the generation of defective products, reducing the risk of mixed packing and mis-packing, and reducing the need to replace the picking mechanism due to severe wear, thus saving equipment maintenance costs.

[0039] The number of opening and closing mechanisms 100 is preferably three or more. For example, in the specific example shown in the figure, the number of opening and closing mechanisms 100 is three. In other examples, the number of opening and closing mechanisms 100 may also be four, five or more.

[0040] In one example, when the opening and closing mechanism 100 is in the closed state, the closing portions 111 of the multiple opening and closing mechanisms 100 fit together tightly, making it easy for the multiple opening and closing mechanisms 100 to extend into the yarn tube.

[0041] like Figure 4 As shown, in one example, the closing part 111 is a prism. In a specific example, the number of opening and closing mechanisms 100 in the yarn picking device is three, and the closing part 111 is a triangular prism. In the closed state, the closing parts 111 of the three opening and closing mechanisms 100 fit together tightly.

[0042] like Figure 2 As shown, in one example, the extending direction of the adjusting rod 120 is perpendicular to the extending direction of the closing portion 111. Furthermore, in one example, the adjusting rods 120 in the plurality of opening and closing mechanisms 100 are located at the same height.

[0043] In one example, the main body 110 has multiple abutment protrusions 112, which are arranged sequentially along the extension direction of the closing portion 111. The highest protrusion height of the abutment protrusion 112 increases as it approaches the adjustment protrusion 113.

[0044] Furthermore, a first abutting groove 1121 is formed between adjacent abutting protrusions 112. A second abutting groove 1122 is formed between the abutting protrusion 112 closest to the adjusting protrusion 113 and the adjusting protrusion 113.

[0045] In one example, the side of the abutting protrusion 112 away from the closing portion 111 is the abutting surface 1123. When the opening and closing mechanism 100 is in the open state, the abutting surface 1123 abuts against the inner wall of the yarn tube. The abutting surface 1123 is set at an angle to the closing portion 111. In one example, the angle between the abutting surface 1123 and the closing portion 111 is 42° to 48°.

[0046] In one example, the contact surface 1123 is provided with anti-slip texture to increase the friction between the contact surface 1123 and the inner wall of the yarn tube and prevent the yarn from slipping off.

[0047] like Figure 1 and Figure 2 As shown, in one example, the opening and closing mechanism 100 also includes a locking bolt (not shown in the figure), and the adjusting protrusion 113 has a threaded hole 1132 that mates with the locking bolt. The extending direction of the adjusting rod 120 is perpendicular to the extending direction of the locking bolt, and the adjusting rod 120 is tangent to the threaded hole 1132. The threaded hole 1132 communicates with the receiving hole 1131, so that the adjusting rod 120 can be pressed tightly after the locking bolt is tightened. It should be noted that the "adjusting rod 120 is tangent to the threaded hole 1132" is not strictly limited to their geometric positional relationship, as long as the adjusting rod 120 can be pressed tightly after the locking bolt is tightened.

[0048] In the above example, the length of the adjusting rod 120 extending beyond the adjusting protrusion 113 can be easily adjusted. Specifically, when installing the adjusting rod 120, it is inserted into the receiving hole 1131. After adjusting the length of the adjusting rod 120 extending beyond the adjusting protrusion 113, the locking bolt is tightened into the threaded hole 1132. In this way, the locking bolt can press the adjusting rod 120 tightly, preventing the adjusting rod 120 from shifting during operation. When it is necessary to readjust the adjusting rod 120, simply fine-tune the locking bolt while it is tightened.

[0049] In other examples, the adjusting rod 120 is not limited to the installation method described above, and can also be movably connected to the adjusting protrusion 113 in other ways. For example, the adjusting rod 120 can be threaded into the receiving hole 1131; however, since the length of the adjusting rod 120 extending out of the adjusting protrusion 113 is relatively short, this method is difficult to adjust manually.

[0050] It is understandable that the adjusting rod 120 requires a certain degree of strength and rigidity. For example, the adjusting rod 120 can be made of metal, such as alloy steel, heavy metal materials, hard alloys, etc.

[0051] In one example, the end of the adjusting rod 120 extending out of the receiving hole 1131 is tapered, which improves the interaction between the adjusting rod 120 and the yarn tube, especially for smooth plastic yarn tubes, thereby increasing the success rate of the yarn pick-up device. For example, the taper of the adjusting rod 120 can be set to, but is not limited to, 45° to 60°. Within this taper range, the success rate of the yarn pick-up device can be effectively improved. In some specific examples, the taper of the adjusting rod 120 is 45°, 47°, 49°, 51°, 53°, 55°, 57°, 59°, 60°, etc.

[0052] In one example, the longest extension of the adjusting rod 120 beyond the adjusting protrusion 113 is 2mm to 3mm. In some specific examples, the longest extension of the adjusting rod 120 beyond the adjusting protrusion 113 is 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, etc. In one example, the shortest extension of the adjusting rod 120 beyond the adjusting protrusion 113 is 0.3mm to 1mm. In some specific examples, the shortest extension of the adjusting rod 120 beyond the adjusting protrusion 113 is 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc.

[0053] In one example, the adjustable length of the adjusting rod 120 is 0.3 mm to 3 mm. The adjustable length of the adjusting rod 120 is the difference between the longest and shortest length that the adjusting rod 120 can extend out of the adjusting protrusion 113.

[0054] In some specific examples, the adjustable length of the adjusting rod 120 is 0.3mm, 0.6mm, 0.9mm, 1.2mm, 1.5mm, 1.8mm, 2.1mm, 2.4mm, 2.7mm, 3mm, etc.

[0055] In a specific example, the adjustable length of the adjusting rod 120 is 0.3 mm, the shortest length of which extends out of the adjusting protrusion 113 is 0.2 mm, and the longest length of which extends out of the adjusting protrusion 113 is 0.5 mm. That is, the length of the adjusting rod 120 extending out of the adjusting protrusion 113 is adjustable in the range of 0.2 mm to 0.5 mm.

[0056] In a specific example, the adjustable length of the adjusting rod 120 is 0.5 mm, the shortest length of which extends out of the adjusting protrusion 113 is 0.1 mm, and the longest length of which extends out of the adjusting protrusion 113 is 0.6 mm. That is, the length of the adjusting rod 120 extending out of the adjusting protrusion 113 is adjustable in the range of 0.1 mm to 0.6 mm.

[0057] In a specific example, the adjustable length of the adjusting rod 120 is 1 mm, and its shortest length extending out of the adjusting protrusion 113 is 0.5 mm. Therefore, its longest length extending out of the adjusting protrusion 113 is 1.5 mm. That is, the length of the adjusting rod 120 extending out of the adjusting protrusion 113 is adjustable within the range of 0.5 mm to 1.5 mm.

[0058] In one example, the connecting protrusion 114 has a mounting hole (not shown) and is connected to the opening and closing drive mechanism by a fastener that mates with the mounting hole.

[0059] In one example, the opening and closing drive mechanism is a pneumatic component, such as a cylinder.

[0060] Furthermore, the present invention also provides a yarn feeding device, including a transfer device and a yarn picking device of any of the above examples. The transfer device is connected to the yarn picking device for moving the yarn picking device.

[0061] The transfer device may include, but is not limited to, a conveyor rail, a multi-axis robot, etc.

[0062] The aforementioned yarn feeding equipment includes a yarn picking device according to any of the above examples. The yarn picking device includes an opening / closing drive mechanism and multiple opening / closing mechanisms 100. When the opening / closing drive mechanism drives the multiple opening / closing mechanisms 100 to close, each opening / closing mechanism 100 can extend into the yarn tube of the yarn package. When the opening / closing drive mechanism drives the multiple opening / closing mechanisms 100 to open, the end of the closing portion 111 near the abutting protrusion 112 expands outward, causing the abutting protrusion 112 to abut against the inner wall of the yarn tube. An adjusting rod 120 of the opening / closing mechanism 100 passes through the receiving hole 1131 of the adjusting protrusion 113 and extends to the highest point of the adjusting protrusion 113. When the opening / closing mechanism 100 is in the open state, the adjusting rod 120 abuts against the inner wall of the yarn tube and cooperates with the abutting protrusion 112 to pick up the yarn package. Furthermore, the extension length of the adjusting rod 120 is adjustable, which allows the force exerted by the yarn pick-up device on the yarn to be adjusted by changing the contact position. This avoids the problem of unstable yarn picking and easy yarn drop when the traditional picking mechanism is severely worn. Alternatively, the extension length of the adjusting rod 120 can be adjusted according to the smoothness of the yarn tube, improving the stability of automatic packaging and stacking of yarn, reducing the generation of defective products, reducing the risk of mixed packing and mis-packing, and reducing the need to replace the picking mechanism due to severe wear, thus saving equipment maintenance costs.

[0063] The present invention is illustrated below with specific embodiments, but the present invention is not limited to the examples below. It should be understood that the appended claims summarize the scope of the present invention. Under the guidance of the inventive concept, those skilled in the art should realize that any changes made to the various examples of the present invention will be covered by the spirit and scope of the claims of the present invention.

[0064] Example 1

[0065] This embodiment provides a yarn pickup device, including an opening and closing drive mechanism and three opening and closing mechanisms. The opening and closing drive mechanism is connected to the multiple opening and closing mechanisms to drive the multiple opening and closing mechanisms to close or open.

[0066] The opening and closing mechanism includes a main body, an adjusting rod, and a locking bolt. The main body includes a closing part, an abutting protrusion, an adjusting protrusion, and a connecting protrusion.

[0067] The closing section has a strip-shaped structure and is a triangular prism. In the closed state, the closing sections of the three opening and closing mechanisms fit tightly together. The abutting protrusion, adjusting protrusion, and connecting protrusion are sequentially arranged on the closing section along its extension direction. The protrusion height of the abutting protrusion gradually increases as it approaches the adjusting protrusion. The protrusion height of the adjusting protrusion is higher than that of the abutting protrusion.

[0068] The side of the abutting protrusion furthest from the closing part is the abutting surface. When the opening and closing mechanism is in the open state, the abutting surface abuts against the inner wall of the yarn tube. The abutting surface and the closing part are set at an angle. The abutting surface is provided with anti-slip texture.

[0069] The adjusting protrusion has a receiving hole extending from its highest point towards the closing part. An adjusting rod passes through this receiving hole, extending beyond the highest point of the adjusting protrusion. The main body has a threaded hole that mates with a locking bolt. The extending direction of the adjusting rod is perpendicular to the extending direction of the locking bolt, and the adjusting rod is tangent to the threaded hole, so that the locking bolt can press the adjusting rod firmly when tightened. The length of the adjusting rod extending beyond the adjusting protrusion can be adjusted by loosening or tightening the locking bolt. The extending direction of the adjusting rod is perpendicular to the extending direction of the closing part, and the adjusting rods in all three opening and closing mechanisms are at the same height. The end of the adjusting rod extending beyond the receiving hole is tapered, with a taper of 45°.

[0070] The adjustable length of the adjusting rod is 0.3mm. The shortest length of the rod extending out of the adjusting protrusion is 0.2mm, and the longest length extending out of the adjusting protrusion is 0.5mm. That is, the length of the adjusting rod extending out of the adjusting protrusion is adjustable within the range of 0.2mm to 0.5mm.

[0071] The connecting protrusion has a mounting hole and is connected to the opening and closing drive mechanism through a fastener that mates with the mounting hole. When the opening and closing drive mechanism drives multiple opening and closing mechanisms to open, the end of the closing part near the abutting protrusion expands outward, so that the abutting protrusion abuts against the inner wall of the yarn tube.

[0072] Example 2

[0073] This embodiment provides a yarn pickup device, including an opening and closing drive mechanism and three opening and closing mechanisms. The opening and closing drive mechanism is connected to the multiple opening and closing mechanisms to drive the multiple opening and closing mechanisms to close or open.

[0074] The opening and closing mechanism includes a main body, an adjusting rod, and a locking bolt. The main body includes a closing part, an abutting protrusion, an adjusting protrusion, and a connecting protrusion.

[0075] The closing section has a strip-shaped structure and is a triangular prism. In the closed state, the closing sections of the three opening and closing mechanisms fit tightly together. The abutting protrusion, adjusting protrusion, and connecting protrusion are sequentially arranged on the closing section along its extension direction. The protrusion height of the abutting protrusion gradually increases as it approaches the adjusting protrusion. The protrusion height of the adjusting protrusion is higher than that of the abutting protrusion.

[0076] The main body has two abutting protrusions, arranged sequentially along the extension direction of the closing portion. The highest protrusion of the abutting protrusion increases as it approaches the adjusting protrusion. A first abutting groove is formed between the abutting protrusions. A second abutting groove is formed between the abutting protrusion closest to the adjusting protrusion and the adjusting protrusion. The side of the abutting protrusion furthest from the closing portion is the abutting surface. When the opening and closing mechanism is in the extended state, the abutting surface abuts against the inner wall of the yarn tube. The abutting surface is set at an angle to the closing portion. The abutting surface is provided with anti-slip texture.

[0077] The adjusting protrusion has a receiving hole extending from its highest point towards the closing part. An adjusting rod passes through this receiving hole, extending beyond the highest point of the adjusting protrusion. The main body has a threaded hole that mates with a locking bolt. The extending direction of the adjusting rod is perpendicular to the extending direction of the locking bolt, and the adjusting rod is tangent to the threaded hole, so that the locking bolt can press the adjusting rod firmly when tightened. The length of the adjusting rod extending beyond the adjusting protrusion can be adjusted by loosening or tightening the locking bolt. The extending direction of the adjusting rod is perpendicular to the extending direction of the closing part, and the adjusting rods in all three opening and closing mechanisms are at the same height. The end of the adjusting rod extending beyond the receiving hole is tapered, with a taper of 55°.

[0078] The adjustable length of the adjusting rod is 1mm. The shortest length of the rod extending out of the adjusting protrusion is 0.5mm, and the longest length extending out of the adjusting protrusion is 1.5mm. That is, the length of the adjusting rod extending out of the adjusting protrusion is adjustable within the range of 0.5mm to 1.5mm.

[0079] The connecting protrusion has a mounting hole and is connected to the opening and closing drive mechanism through a fastener that mates with the mounting hole. When the opening and closing drive mechanism drives multiple opening and closing mechanisms to open, the end of the closing part near the abutting protrusion expands outward, so that the abutting protrusion abuts against the inner wall of the yarn tube.

[0080] Example 3

[0081] This embodiment provides a yarn feeding device, including a transfer device and a yarn picking device as described in Embodiment 1. The transfer device is a conveying guide rail, and the yarn picking device is mounted on the conveying guide rail and can move along the conveying guide rail.

[0082] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A yarn pick-up device, characterized in that, It includes an opening and closing drive mechanism and multiple opening and closing mechanisms, wherein the opening and closing drive mechanism is connected to the multiple opening and closing mechanisms to drive the multiple opening and closing mechanisms to close or open. The opening and closing mechanism includes a main body and an adjusting rod. The main body includes a closing portion, an abutting protrusion, an adjusting protrusion, and a connecting protrusion. The closing portion is a strip-shaped structure. The closing portions of the multiple opening and closing mechanisms are close to each other in the closed state. The abutting protrusion, the adjusting protrusion, and the connecting protrusion are sequentially arranged on the closing portion along the extension direction of the closing portion. Along the direction close to the adjusting protrusion, the protrusion height of the abutting protrusion gradually increases overall. The maximum protrusion height of the adjusting protrusion is higher than the maximum protrusion height of the abutting protrusion. The connecting protrusion is connected to the opening and closing drive mechanism. The adjusting protrusion has a receiving hole that extends from the highest point of the adjusting protrusion toward the closing portion. The adjusting rod passes through the receiving hole and extends out of the highest point, and the length of the extension is adjustable.

2. The yarn pick-up device as described in claim 1, characterized in that, The extension direction of the adjusting rod is perpendicular to the extension direction of the closing part.

3. The yarn pick-up device as described in claim 1, characterized in that, The opening and closing mechanism also includes a locking bolt. The adjusting protrusion has a threaded hole that mates with the locking bolt. The extending direction of the adjusting rod is perpendicular to the extending direction of the locking bolt, and the adjusting rod is tangent to the threaded hole, so that the adjusting rod can be pressed tightly after the locking bolt is tightened.

4. The yarn pick-up device as described in claim 1, characterized in that, The end of the adjusting rod extending out of the receiving hole is tapered.

5. The yarn pick-up device as described in claim 4, characterized in that, The taper design has a taper angle of 45° to 60°.

6. The yarn pick-up device as described in claim 1, characterized in that, The minimum length by which the adjusting rod can extend beyond the adjusting protrusion is 0.3mm to 1mm; and / or The maximum length by which the adjusting rod can extend beyond the adjusting protrusion is 2mm to 3mm; and / or The adjustable length of the adjusting rod is 0.3mm to 3mm.

7. The yarn pick-up device according to any one of claims 1 to 6, characterized in that, The main body has multiple abutting protrusions, which are arranged sequentially along the extension direction of the closing portion. The highest protrusion height of the abutting protrusion increases as it approaches the adjusting protrusion.

8. The yarn pick-up device as described in claim 7, characterized in that, A first abutment groove is formed between adjacent abutment protrusions; and / or A second abutment groove is formed between the abutment protrusion closest to the adjustment protrusion and the adjustment protrusion.

9. The yarn pick-up device as described in any one of claims 1 to 6 and 8, characterized in that, The number of opening and closing mechanisms is three or more.

10. A yarn conveying device, characterized in that, The device includes a transfer device and a yarn pickup device according to any one of claims 1 to 9, wherein the transfer device is connected to the yarn pickup device for moving the yarn pickup device.

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