A gripper for changing a bobbin

Abstract

This utility model relates to the field of yarn changing technology for roving frames, and in particular to a gripper for yarn changing, comprising a fixed plate, with a telescopic mechanism fixedly installed at one end of the fixed plate; the output end of the telescopic mechanism passes through the fixed plate and is connected to a round rod; at least two sets of scissor mechanisms are evenly arranged along the circumferential direction on the outer peripheral wall of the fixed plate and the outer peripheral wall of the round rod; an inner support rod is connected to the end of the scissor mechanism away from the fixed plate and the round rod. This gripper for yarn changing has good adaptability and stability, and can efficiently and reliably complete the yarn changing operation, improving the work efficiency and quality of yarn changing.

Description

Technical Field

[0001] This utility model relates to the field of yarn changing technology for roving frames, and in particular to a gripper for changing yarn bobbins. Background Technology

[0002] A roving frame is a spinning machine that produces roving from fiber slivers. After the fiber sliver is drawn from the sliver can, it is fed into the drafting mechanism via guide rollers and other components. The sliver is then drafted by rollers and other parts to achieve a suitable thickness. The drafted fiber sliver is then twisted by the spindle. The rotation of the spindle creates twist in the yarn, forming roving with a certain strength and structure.

[0003] After the roving is wound onto the bobbin, the wound bobbin is removed using a gripper and a bobbin-changing mechanism, and replaced with an empty bobbin. When gripping the bobbin, a gripper as disclosed in publication number CN218087786U is required, applicable to the mechanical field. To address the problem of low mechanization in bobbin gripping in textile factories, this utility model provides a gripper including an axial telescopic mechanism and a radial contraction mechanism. The axial telescopic mechanism includes an inner rod, and the radial contraction mechanism includes a connecting rod and gripping fingers. It also includes an outer cylinder. The inner rod moves axially within the outer cylinder. The front end of the inner rod is movably connected to one end of the connecting rod via a first connecting shaft, and the other end of the connecting rod is movably connected to the gripping fingers via a second connecting shaft. The rear end of the gripping fingers is movably connected to the outer cylinder via a third connecting shaft.

[0004] In the above solution, in order to solve the problem of lack of accuracy when gripping the yarn bobbin from the inside, the yarn bobbin is gripped from the outside. However, when gripping the yarn bobbin, the distance between the two yarn bobbins is small, which makes it easy to cause interference when changing the yarn bobbin, affecting the gripping accuracy. Utility Model Content

[0005] To address the current problem of inaccuracy when gripping yarn bobbins from the inside, and the issue of gripping yarn bobbins from the outside, where the small distance between the two bobbins causes interference during bobbin replacement and affects gripping accuracy, this utility model provides a gripper for changing yarn bobbins.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A gripper for changing yarn bobbins includes a fixed plate with a telescopic mechanism fixedly mounted at one end. The output end of the telescopic mechanism passes through the fixed plate and is connected to a round rod. At least two sets of scissor mechanisms are evenly arranged along the circumferential direction on the outer peripheral walls of the fixed plate and the round rod. An inner support rod is connected to the end of the scissor mechanism away from the fixed plate and the round rod. The extension length of the round rod can be flexibly adjusted via the telescopic mechanism at one end of the fixed plate, driving the scissor mechanisms to move, thereby changing the opening range of the inner support rod, thus adapting to yarn bobbins of various inner diameters. The inner support rod is used to tighten the inner wall of the yarn bobbin, ensuring gripping stability. The inner support rod is designed to facilitate pre-insertion into the through hole in the middle of the yarn bobbin, and then use the telescopic mechanism to drive the inner support rod to continue inserting into the yarn bobbin, ensuring that the inner support rod holds the yarn bobbin securely. This gripper for changing yarn bobbins has good adaptability and stability, can efficiently and reliably complete yarn bobbin changing operations, and improves the efficiency and quality of yarn bobbin changing work.

[0008] Preferably, three sets of scissor mechanisms are provided; the included angle between any two adjacent scissor mechanisms is 120°. The three sets of scissor mechanisms, with an included angle of 120° between adjacent mechanisms, allow the inner support rod to apply force from three evenly distributed directions when opening the yarn bobbin, achieving uniform support for the inner wall of the yarn bobbin. This layout mechanically forms a stable triangular structure, greatly enhancing stability during the gripping process and effectively preventing the yarn bobbin from swaying or even falling due to uneven force. Furthermore, compared to other configurations in terms of quantity and angle, the three sets of 120° angled scissor mechanisms, while ensuring the opening range and adaptability to various yarn bobbin inner diameters, have a more compact and rational structure, higher space utilization efficiency, and further improve the reliability and efficiency of the gripper in grasping the yarn bobbin, facilitating smooth yarn bobbin changing operations.

[0009] Preferably, the outer wall of the inner support rod is provided with anti-slip texture. The anti-slip texture on the outer wall of the inner support rod greatly enhances the friction between the inner support rod and the inner wall of the yarn bobbin. When the inner support rod holds the yarn bobbin, the anti-slip texture can effectively prevent the yarn bobbin from sliding on the inner support rod, ensuring that the yarn bobbin is always firmly held even if vibration occurs or external force interference occurs during the operation of the roving frame.

[0010] Preferably, the scissor mechanism includes a first link and a second link; one end of the first link is hinged to the outer peripheral wall of the fixed disk; the end of the first link away from the fixed disk is connected to the inner support rod; one end of the second link is hinged to the outer peripheral wall of the round rod; the end of the second link away from the round rod is hinged to the inner support rod; the middle of the first link is hinged to the middle of the second link. The first link is hinged to the outer peripheral wall of the fixed disk at one end and connected to the inner support rod at the other end; the second link is hinged to the outer peripheral wall of the round rod at one end and connected to the inner support rod at the other end, with their middle sections hinged together. This structure allows the position and expansion range of the inner support rod to be cleverly changed through the linkage of the scissor mechanism when the telescopic mechanism drives the round rod to move. When the round rod extends or retracts, the first and second links rotate flexibly based on the hinge point, causing the inner support rod to expand or contract evenly and stably, adapting to yarn bobbins of different inner diameters. Furthermore, during the gripping process, the scissor mechanism can evenly distribute the force from the fixed plate and the round rod to the inner support rod, enhancing the stability of the inner support rod when gripping the yarn bobbin and ensuring that the yarn bobbin changing operation is carried out efficiently and accurately.

[0011] Preferably, a first hinge seat is provided at the upper end of the inner support rod; the upper end of the second connecting rod is hinged to the first hinge seat; a limit seat is provided in the middle of the inner support rod; and the lower end of the first connecting rod is slidably disposed within the limit seat. The first hinge seat at the upper end of the inner support rod provides a stable and flexible hinge point for the second connecting rod, ensuring that the second connecting rod can smoothly rotate around this point during the operation of the scissor mechanism, accurately transmitting the driving force from the round rod, and thus stably controlling the movement of the inner support rod. The limit seat in the middle of the inner support rod, together with the sliding of the lower end of the first connecting rod therein, plays a key role in guiding and limiting. On the one hand, it ensures that the first connecting rod always applies force to the inner support rod along a predetermined trajectory during the movement, maintaining the consistency and accuracy of the entire scissor mechanism's movement; on the other hand, when gripping yarn bobbins of different sizes, the constraint of the first connecting rod by the limit seat can achieve precise control of the opening amplitude of the inner support rod, preventing the inner support rod from being over-opened or over-contracted. This connection structure design greatly enhances the stability and controllability of the scissor mechanism's drive inner support rod in gripping the yarn bobbin, effectively ensuring the efficiency and reliability of the yarn bobbin changing operation.

[0012] Preferably, the limiting seat is provided with an elongated groove; the first connecting rod is provided with a pin, which slides within the elongated groove. The elongated groove on the limiting seat cooperates with the pin on the first connecting rod, and the pin slides within the elongated groove, greatly improving the accuracy and stability of the scissor mechanism's operation. The elongated groove provides a precise movement trajectory for the pin, enabling the first connecting rod to apply force to the inner support rod strictly in a predetermined direction during operation, effectively preventing the inner support rod from wobbling or deforming due to force deviation, and ensuring the consistency of the overall movement of the scissor mechanism. Simultaneously, when dealing with yarn bobbins of different sizes, the sliding of the pin within the elongated groove allows for flexible adjustment of the position of the first connecting rod, thereby achieving precise control over the opening amplitude of the inner support rod, ensuring that the inner support rod can tightly fit against the inner wall of the yarn bobbin for reliable gripping. This design not only enhances the gripper's adaptability to different yarn bobbins but also further improves the reliability and efficiency of yarn bobbin changing operations, reducing operational errors caused by unstable gripping.

[0013] Preferably, a second hinge seat is provided on the outer peripheral wall of the fixed disk; the first connecting rod is hinged to the second hinge seat.

[0014] Preferably, a third hinge seat is fixedly provided on the outer peripheral wall of the round rod; the second connecting rod is hinged to the third hinge seat.

[0015] As can be seen from the above technical solution, the advantages of this utility model include: the extension length of the round rod can be flexibly adjusted through the telescopic mechanism at one end of the fixed plate, driving the scissor mechanism to move, thereby changing the opening range of the inner support rod, thus adapting to yarn tubes of various inner diameters. The inner support rod is used to tighten the inner wall of the yarn tube, ensuring the stability of the gripping. The design of the inner support rod facilitates pre-insertion into the through hole in the middle of the yarn tube, and then the telescopic mechanism drives the inner support rod to continue inserting into the yarn tube, ensuring that the inner support rod supports the yarn tube. This yarn tube changing gripper has good adaptability and stability, and can efficiently and reliably complete the yarn tube changing operation, improving the work efficiency and quality of yarn tube changing. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3This is a schematic diagram of the structure of the fixing disc of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the round rod of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal support rod of this utility model.

[0022] Explanation of reference numerals in the attached diagram: 1-fixed disc, 2-round rod, 3-inner support rod, 4-first connecting rod, 5-second connecting rod;

[0023] 101-Second hinge seat; 201-Third hinge seat; 301-Anti-slip texture; 302-First hinge seat; 303-Limit seat; 304-Long groove. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] like Figure 1 and Figure 2 As shown, a gripper for changing yarn bobbins includes a fixed plate 1. A telescopic mechanism is fixedly installed at one end of the fixed plate 1. The telescopic mechanism is an electric push rod, a pneumatic cylinder, or a hydraulic cylinder, preferably an electric push rod. The output end of the telescopic mechanism passes through the fixed plate 1 and is connected to a round rod 2. At least two sets of scissor mechanisms are evenly arranged along the circumferential direction on the outer peripheral wall of the fixed plate 1 and the outer peripheral wall of the round rod 2. An inner support rod 3 is connected to the end of the scissor mechanism away from the fixed plate 1 and the round rod 2.

[0026] The extension length of the round rod can be flexibly adjusted via a telescopic mechanism at one end of the fixed plate, driving the scissor mechanism to change the opening range of the inner support rod, thus adapting to yarn bobbins of various inner diameters. The inner support rod is used to tighten the inner wall of the yarn bobbin, ensuring the stability of the grip. The design of the inner support rod facilitates pre-insertion into the through hole in the middle of the yarn bobbin, and then the telescopic mechanism drives the inner support rod to continue inserting into the yarn bobbin, ensuring that the inner support rod holds the yarn bobbin firmly. This yarn bobbin changing gripper has good adaptability and stability, and can efficiently and reliably complete the yarn bobbin changing operation, improving the work efficiency and quality of yarn bobbin changing.

[0027] In the above configuration, there are three sets of scissor mechanisms; the included angle between any two adjacent scissor mechanisms is 120°. The three sets of scissor mechanisms, with an included angle of 120° between adjacent mechanisms, allow the inner support rod to apply force from three evenly distributed directions when opening the yarn tube, achieving uniform support for the inner wall of the yarn tube. This layout mechanically forms a stable triangular structure, greatly enhancing stability during the gripping process and effectively preventing the yarn tube from swaying or even falling due to uneven force. Furthermore, compared to other configurations in terms of quantity and angle, the three sets of 120° angled scissor mechanisms, while ensuring the opening range and adaptability to various yarn tube inner diameters, have a more compact and rational structure, higher space utilization efficiency, and further improve the reliability and efficiency of the gripper in grasping the yarn tube, facilitating smooth yarn tube changing operations. The outer wall of the inner support rod 3 is provided with anti-slip texture 301. The anti-slip texture on the outer wall of the inner support rod greatly enhances the friction between the inner support rod and the inner wall of the yarn tube. When the inner support rod holds the yarn bobbin, the anti-slip texture effectively prevents the yarn bobbin from sliding on the inner support rod. Even if vibration occurs or external force interference occurs during the operation of the roving frame, it can ensure that the yarn bobbin is always firmly held.

[0028] Among them, such as Figure 2 As shown, the scissor mechanism includes a first link 4 and a second link 5. One end of the first link 4 is hinged to the outer peripheral wall of the fixed disk 1; the end of the first link 4 away from the fixed disk 1 is connected to the inner support rod 3; one end of the second link 5 is hinged to the outer peripheral wall of the round rod 2; the end of the second link 5 away from the round rod 2 is hinged to the inner support rod 3; the middle of the first link 4 is hinged to the middle of the second link 5. The first link is hinged to the outer peripheral wall of the fixed disk at one end and connected to the inner support rod at the other end. The second link is hinged to the outer peripheral wall of the round rod at one end and connected to the inner support rod at the other end, with their middle sections hinged together. This structure allows the position and expansion range of the inner support rod to be cleverly changed through the linkage of the scissor mechanism when the telescopic mechanism drives the round rod to move. When the round rod extends or retracts, the first and second links rotate flexibly based on the hinge point, causing the inner support rod to expand or contract evenly and stably, adapting to yarn bobbins of different inner diameters. Furthermore, during the gripping process, the scissor mechanism can evenly distribute the force from the fixed plate and the round rod to the inner support rod, enhancing the stability of the inner support rod when gripping the yarn bobbin and ensuring that the yarn bobbin changing operation is carried out efficiently and accurately.

[0029] like Figure 5As shown, the upper end of the inner support rod 3 is provided with a first hinge seat 302; the upper end of the second connecting rod 5 is hinged to the first hinge seat 302; a limiting seat 303 is provided in the middle of the inner support rod 3; and the lower end of the first connecting rod 4 is slidably disposed within the limiting seat 303. The first hinge seat at the upper end of the inner support rod provides a stable and flexible hinge point for the second connecting rod, ensuring that the second connecting rod can smoothly rotate around this point during the operation of the scissor mechanism, accurately transmitting the driving force from the round rod, and thus stably controlling the movement of the inner support rod. The limiting seat in the middle of the inner support rod, together with the sliding of the lower end of the first connecting rod within it, plays a key role in guiding and limiting. On the one hand, it ensures that the first connecting rod always applies force to the inner support rod along a predetermined trajectory during the movement, maintaining the consistency and accuracy of the entire scissor mechanism's movement; on the other hand, when gripping yarn bobbins of different sizes, the constraint of the first connecting rod by the limiting seat can achieve precise control of the opening amplitude of the inner support rod, preventing the inner support rod from being over-opened or over-contracted. This connection structure design greatly enhances the stability and controllability of the scissor mechanism's drive inner support rod in gripping the yarn bobbin, effectively ensuring the efficiency and reliability of yarn bobbin changing operations. A long groove 304 is provided on the limiting seat 303; a pin is provided on the first connecting rod 4, and the pin slides within the long groove 304. The long groove on the limiting seat cooperates with the pin on the first connecting rod, allowing the pin to slide within the long groove, greatly improving the accuracy and stability of the scissor mechanism's operation. The long groove provides a precise movement trajectory for the pin, enabling the first connecting rod to apply force to the inner support rod strictly in the predetermined direction during operation, effectively preventing the inner support rod from wobbling or deforming due to force deviation, and ensuring the consistency of the overall movement of the scissor mechanism. Simultaneously, when dealing with yarn bobbins of different sizes, the sliding of the pin within the long groove allows for flexible adjustment of the position of the first connecting rod, thereby achieving precise control over the opening amplitude of the inner support rod, ensuring that the inner support rod can tightly fit against the inner wall of the yarn bobbin for reliable gripping. This design not only enhances the gripper's adaptability to different yarn bobbins but also further improves the reliability and efficiency of yarn bobbin changing operations, reducing operational errors caused by unstable gripping. A second hinge seat 101 is provided on the outer peripheral wall of the fixed plate 1, such as... Figure 3 As shown; the first connecting rod 4 is hinged to the second hinge seat 101. A third hinge seat 201 is fixedly installed on the outer circumferential wall of the round rod 2; the second connecting rod 5 is hinged to the third hinge seat 201, as shown. Figure 4 As shown.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gripper for changing yarn bobs, comprising a fixing disc (1), characterized in that, A telescopic mechanism is fixedly installed at one end of the fixed disk (1); the output end of the telescopic mechanism passes through the fixed disk (1) and is connected to a round rod (2); at least two sets of scissor mechanisms are evenly arranged along the circumferential direction on the outer peripheral wall of the fixed disk (1) and the outer peripheral wall of the round rod (2); an inner support rod (3) is connected to the end of the scissor mechanism away from the fixed disk (1) and the round rod (2).

2. The gripper for changing yarn bobs according to claim 1, characterized in that, There are three sets of scissor lift mechanisms; the included angle between two adjacent scissor lift mechanisms is 120°.

3. The gripper for changing yarn bobs according to claim 1, characterized in that, The outer wall of the inner strut (3) is provided with anti-slip texture (301).

4. The gripper for changing yarn bobs according to claim 3, characterized in that, The scissor mechanism includes a first link (4) and a second link (5); one end of the first link (4) is hinged to the outer peripheral wall of the fixed plate (1); the end of the first link (4) away from the fixed plate (1) is connected to the inner support rod (3); one end of the second link (5) is hinged to the outer peripheral wall of the round rod (2); the end of the second link (5) away from the round rod (2) is hinged to the inner support rod (3); the middle part of the first link (4) is hinged to the middle part of the second link (5).

5. The gripper for changing yarn bobs according to claim 4, characterized in that, The upper end of the inner support rod (3) is provided with a first hinge seat (302); the upper end of the second connecting rod (5) is hinged to the first hinge seat (302); a limit seat (303) is provided in the middle of the inner support rod (3); the lower end of the first connecting rod (4) is slidably disposed in the limit seat (303).

6. The gripper for changing yarn bobs according to claim 5, characterized in that, The limiting seat (303) is provided with a long groove (304); the first connecting rod (4) is provided with a pin, which is slidably disposed in the long groove (304).

7. The gripper for changing yarn bobs according to claim 6, characterized in that, A second hinge seat (101) is provided on the outer peripheral wall of the fixed disk (1); the first connecting rod (4) is hinged to the second hinge seat (101).

8. The gripper for changing yarn bobs according to claim 7, characterized in that, The outer circumferential wall of the round rod (2) is fixedly provided with a third hinge seat (201); the second connecting rod (5) is hinged on the third hinge seat (201).

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