High-precision tongue opener for a circular knitting machine with transfer

Abstract

The utility model relates to a knitting equipment technical field especially relates to a high accuracy tongue opener for knitting transfer round machine, it mainly solved the problem of inconvenient adjustment and low accuracy of the tongue opener in the prior art, including base, connecting seat, tongue needle, first bolt, second bolt, positioning pin and positioning swing arm, the connecting seat is equipped with through -hole, the connecting seat passes through the through -hole and is connected with the base through first bolt, the tongue needle is located on the connecting seat, the positioning pin is located in the lower part of connecting seat, and is located in the circumferential side of first bolt, one end of positioning swing arm is located on the base through second bolt, positioning swing arm is distributed in the circumferential side of first bolt, and at least two positioning grooves for clamping positioning pin are equipped on the side edge of positioning swing arm close to positioning pin.

Description

Technical Field

[0001] This utility model relates to the field of knitting equipment technology, and in particular to a high-precision tongue opener for a circular knitting machine. Background Technology

[0002] When the knitting unit of a circular knitting machine is knitting, the needle latch must be opened first so that the needle can hook the yarn and begin knitting. This opening of the needle latch is accomplished by a latch opener. The middle section of the latch opener is mounted on a rotatable shaft, which is mounted on a base. A rotating arm is mounted on the shaft, and a cylinder is mounted on the base. The cylinder piston drives the rotating arm to rotate the shaft, causing the latch opener needle tip to rotate around the shaft by a certain angle. This allows the latch opener needle tip to hook the needle latch and open it. The cylinder, rotating arm, and shaft constitute the actuation mechanism for the latch opener's rotation. Since the needle is in a certain position within the cylinder, its latch is also in a certain position. This requires the latch opener needle tip to rotate within a certain angular range. Therefore, a limit mechanism is installed on the base to restrict the rotation angle of the latch opener. The limit mechanism and the actuation mechanism together constitute the control mechanism for the latch opener. However, there are many specifications for circular knitting machines, and therefore many specifications for needle cylinders. The positions of the needles on the needle cylinders are also different, which requires a large range of adjustment for the rotation angle boundary position of the latch needle. Traditional limit mechanisms have a small range of adjustment for the rotation angle boundary position of the latch needle, which cannot meet the requirements of the many specifications of circular knitting machines.

[0003] Chinese Patent Application No. 200820085773.4 discloses a control mechanism for the opening needle of a circular knitting machine, including a base and a rotating shaft. The base has a hole into which the rotating shaft is installed and can rotate. The opening needle is mounted at one end of the rotating shaft, and a rotating arm is fixedly mounted at the other end. A cylinder is mounted on the base, with its piston facing the rotating arm. A return spring is mounted on the rotating shaft. A long groove is provided on the base, and an opening needle limiting mechanism is installed on the groove. This limiting mechanism includes a screw and a limiting pin. The screw passes through the long groove and is screwed into the limiting pin to fix it. During use, when it is necessary to adjust the boundary position of the opening needle's rotation angle, the screw fixing the limiting pin is loosened, and the screw and limiting pin are moved to a suitable position within the long groove and re-fixed, increasing the adjustment range of the opening needle's rotation angle boundary position.

[0004] However, during adjustment, it is necessary to manually loosen the screw and the limit pin, slide them along the long groove, and then tighten the screw and the limit pin to lock them in place. This makes it easy for the screw and the limit pin to separate during the sliding process of the limit mechanism, resulting in poor positioning accuracy. Multiple adjustments are required to determine the boundary position of the adjustment tongue pin rotation angle. This type of structure has poor adjustment convenience and low accuracy. Utility Model Content

[0005] Therefore, in view of the above problems, this utility model provides a high-precision tongue opener for a circular knitting machine, which mainly solves the problems of poor adjustment convenience and low accuracy of the tongue opener in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-precision tongue opener for a circular knitting machine includes a base, a connecting seat, a tongue opener needle, a first bolt, a second bolt, a positioning pin, and a positioning swing arm. The connecting seat has a through hole, and the connecting seat is connected to the base through the through hole by the first bolt. The tongue opener needle is located on the connecting seat. The positioning pin is located at the lower part of the connecting seat and is located around the first bolt. One end of the positioning swing arm is located on the base by the second bolt. The positioning swing arm is distributed around the first bolt. The side of the positioning swing arm near the positioning pin has at least two positioning grooves for locking the positioning pin.

[0008] Furthermore, the base includes a base, a support, a locking bolt, and an adjusting bolt. The support is slidably disposed on the base, and the sliding direction of the support is defined as the lateral direction. The support is fixedly connected to the base by the locking bolt. The adjusting bolt is threadedly connected to the base in the lateral direction. The lower surface of the base is recessed in a groove for the nut of the adjusting bolt to be inserted.

[0009] Furthermore, the upper surface of the base is recessed with grooves distributed in the lateral direction, and the support seat is embedded in the grooves.

[0010] Furthermore, a clearance groove is provided on the base and on the lower side of the connecting seat.

[0011] Furthermore, the connecting seat has an eccentric structure.

[0012] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This high-precision tongue opener for a circular knitting transfer machine, when it is necessary to adjust the boundary position of the tongue opener's rotation angle, changes the position of the positioning groove on the positioning arm by swinging the positioning arm. As the connecting seat drives the tongue opener to rotate, the positioning pin on the connecting seat is engaged with the positioning groove on the positioning arm, thereby adjusting the boundary position of the tongue opener's rotation angle and further increasing the adjustment range of the tongue opener's rotation angle boundary position. This structure is simple, has high adjustment convenience, and improves the adjustment accuracy. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a front view structural diagram of an embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the right-side structure of an embodiment of the present utility model;

[0016] Figure 4 This is a top view of an embodiment of the present invention. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0018] The embodiment of this utility model is as follows:

[0019] refer to Figures 1 to 4 As shown, a high-precision tongue opener for a circular knitting machine includes a base 1, a connecting seat 2, a tongue opener needle 3, a first bolt 4, a second bolt 5, a positioning pin 6, and a positioning swing arm 7. The connecting seat 2 has a through hole (not shown in the figure), and the connecting seat 2 is connected to the base 1 through the through hole by the first bolt 4. The tongue opener needle 3 is located on the connecting seat 2. The positioning pin 6 is located at the lower part of the connecting seat 2 and is located around the first bolt 4. One end of the positioning swing arm 7 is located on the base 1 by the second bolt 5. The positioning swing arm 7 is distributed around the first bolt 4. The side of the positioning swing arm near the positioning pin 6 has at least two positioning grooves 8 for locking the positioning pin 6, preferably three.

[0020] This high-precision tongue opener for circular knitting machines, when adjusting the rotation angle boundary position of the tongue opener needle 3, changes the position of the positioning groove 8 on the positioning arm 7 by swinging the positioning arm 7. As the connecting seat 2 drives the tongue opener needle 3 to rotate, the positioning pin 6 on the connecting seat 2 engages with the positioning groove 8 on the positioning arm 7, thereby adjusting the rotation angle boundary position of the tongue opener needle 3 and further increasing the adjustment range of the rotation angle boundary position of the tongue opener needle 3. This structure is simple, has high adjustment convenience, and improves the adjustment accuracy.

[0021] Furthermore, the base 1 includes a base 11, a support 12, a locking bolt 13, and an adjusting bolt 14. The support 12 is slidably mounted on the base 11, and the sliding direction of the support 12 is defined as the transverse direction. The support 12 is provided with a strip groove 17 in the transverse direction. The support 12 is fixedly connected to the base 11 by the locking bolt 13 passing through the strip groove 17. The adjusting bolt 14 is threadedly connected to the base 11 in the transverse direction. The lower surface of the base 11 is recessed in a groove 15 for the nut of the adjusting bolt 14 to be inserted. By loosening the locking bolt 13, the base 11 and the support 12 are loosened. Then, the adjusting bolt 14 is rotated, causing the adjusting bolt 14 to move in the transverse direction. The nut of the adjusting bolt 14 pushes the support 12 and the base 11 to move relative to each other, thereby adjusting the distance between the opening needle 3 and the knitting needle, achieving fine adjustment, and thus improving the accuracy of adjustment.

[0022] Furthermore, the upper surface of the base 11 is recessed with a sliding groove 16 distributed in the transverse direction, and the support seat 12 is embedded in the sliding groove 16. By sliding the support seat 12 along the sliding groove 16, the distance between the opening needle 3 and the knitting needle can be adjusted with high convenience and high precision.

[0023] In this embodiment, a clearance groove 9 is provided on the base 1 and below the connecting seat 2 to prevent the positioning swing arm 7 from hitting the base 1 and the connecting seat 2 during the swing process. This ensures the adjustment range while improving the compactness of the structure and reducing the space occupied. The connecting seat 2 is an eccentric structure, which increases the swing amplitude of the opening pin 3 as the opening pin 3 rotates, thereby increasing the adjustment range of the boundary position of the rotation angle of the opening pin 3.

[0024] Furthermore, 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 of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A high-precision flap opener for a circular knitting machine, characterized in that: The device includes a base, a connecting seat, a tongue-opening pin, a first bolt, a second bolt, a positioning pin, and a positioning swing arm. The connecting seat has a through hole, and the connecting seat is connected to the base through the through hole by the first bolt. The tongue-opening pin is located on the connecting seat. The positioning pin is located at the lower part of the connecting seat and is located around the first bolt. One end of the positioning swing arm is located on the base by the second bolt. The positioning swing arm is distributed around the first bolt. The side of the positioning swing arm near the positioning pin has at least two positioning grooves for locking the positioning pin.

2. The high-precision flap opener for a circular knitting machine according to claim 1, characterized in that: The base includes a base, a support, a locking bolt, and an adjusting bolt. The support is slidably mounted on the base, and the sliding direction of the support is defined as the lateral direction. The support is fixedly connected to the base by the locking bolt. The adjusting bolt is threadedly connected to the base in the lateral direction. The lower surface of the base is recessed in a groove for the nut of the adjusting bolt to be inserted.

3. The high-precision flap opener for a circular knitting machine according to claim 2, characterized in that: The upper surface of the base is recessed with sliding grooves distributed in the lateral direction, and the support seat is embedded in the sliding grooves.

4. The high-precision flap opener for a circular knitting machine according to any one of claims 1 to 3, characterized in that: The base is provided with a clearance groove on the lower side of the connecting seat.

5. The high-precision flap opener for a circular knitting machine according to any one of claims 1 to 3, characterized in that: The connector has an eccentric structure.

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