Outer cover of needle cylinder

Abstract

According to the outer cover of the needle cylinder, a shell body of the outer cover is a cylinder body with two open ends, two pairs of threading holes are formed in the upper portion of the shell body in the radial direction, and each pair of threading holes comprises two symmetric threading holes. At least one threaded hole is radially formed in the lower portion of a shell of the outer cover. And an included angle formed between the two pairs of threading holes is 50-60 degrees. According to the outer cover of the needle cylinder, the two pairs of threading holes are formed in the shell in advance, when the forward twisting working condition and the reverse twisting working condition are switched and adjusted, the outer cover does not need to be rotated, only the other pair of threading holes need to be used for threading again, and the problem that the adjustment precision is not accurate due to the fact that the outer cover needs to be rotated and adjusted previously can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of spinning equipment, and specifically relates to a syringe cover. Background Technology

[0002] A yarn spraying machine is a device that loosens yarn into yarn slivers, then sprays the yarn slivers into a syringe. The syringe needle bar rotates under the rotation of a motor, turning the yarn slivers into hollow yarn.

[0003] The yarn used for twisting with the wool sliver is set through the outer cover of the syringe. Before this invention, when adjusting from forward twisting to reverse twisting, it was necessary to manually rotate the outer cover to adjust the threading angle of the yarn, which resulted in inaccurate adjustment. Utility Model Content

[0004] Based on the content in the background art, this utility model provides another solution for adjusting the threading angle of the silk thread.

[0005] A syringe outer casing is disclosed: the casing is a cylindrical body open at both ends, and two pairs of threading holes are radially provided on the upper part of the casing. Each pair of threading holes includes two threading holes symmetrically arranged with the axis of the casing as the center of symmetry. In this way, when switching between forward and reverse twisting conditions, it is not necessary to rotate the outer casing; it is only necessary to re-thread the needle using the other pair of threading holes. The two pairs of threading holes are fixedly arranged for switching, which avoids the problem of inaccuracy caused by rotating the outer casing for adjustment. The initial angular position of the two pairs of threading holes is determined as follows:

[0006] Furthermore, the lower part of the outer casing has at least one threaded hole radially provided, specifically two threaded holes arranged opposite each other. When the lower part of the outer casing is fitted onto the syringe, one of the threaded holes can be used as a positioning point. After aligning with the oil injection hole on the syringe, a set screw is screwed into the threaded hole to fix the outer casing. After installation, the angle position of the two pairs of threading holes can be accurately determined. When switching between forward twisting and reverse twisting conditions, there is no need to rotate the outer casing for adjustment.

[0007] Preferably, the included angle between the two pairs of thread holes is 50-60°.

[0008] Preferably, the included angle formed between the two pairs of threading holes is 56.3°, which facilitates the precise switching between forward twisting and reverse twisting conditions.

[0009] Furthermore, each threading hole is equipped with a ceramic eye made of alumina, which can prevent the thread inside the threading hole from being scratched.

[0010] Preferably, the diameter of the ceramic eye is 3mm. If the diameter is too large, the thread passing through will vibrate, making it difficult for the hook on the needle bar to hook it. If the diameter is too small, it will easily become clogged and cause the thread to break.

[0011] Furthermore, through holes are provided on the side of the outer casing to allow lint inside the outer casing to be thrown out and sucked out through the external suction pipe, thus preventing lint from affecting the quality of the hollow yarn of the product.

[0012] Through the above technical solutions, this utility model has at least the following beneficial effects:

[0013] The syringe casing described in this application has two pairs of threading holes pre-set on the casing. When switching between forward and reverse twisting conditions, there is no need to rotate the casing. You only need to re-thread the needle using the other pair of threading holes, which avoids the problem of inaccurate adjustment caused by rotating the casing to adjust it. Attached Figure Description

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of this utility model in a schematic manner. Therefore, they only show the components related to this utility model.

[0015] Figure 1 This is a schematic diagram of the overall structure of the outer casing of a syringe as described in the embodiments of this application. Detailed Implementation

[0016] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0017] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] refer to Figure 1The syringe casing has a shell 1 that is open at both ends. Two pairs of threading holes 2 are radially provided on the upper part of the shell 1. Each pair of threading holes 2 includes two threading holes 2 symmetrically arranged with the axis of the shell 1 as the center of symmetry. This way, when switching between forward and reverse twisting modes, it is not necessary to rotate the casing; simply re-thread the needle using the other pair of threading holes 2. Switching between the two fixed pairs of threading holes 2 avoids the inaccuracy caused by previously needing to rotate the casing for adjustment. The initial angular positions of the two pairs of threading holes 2 are determined as follows:

[0019] At least one threaded hole 3 is radially provided on the lower side of the outer casing 1. In this embodiment, there are two oppositely arranged threaded holes 3. When the lower part of the outer casing is fitted onto the syringe, one of the threaded holes 3 can be used as a positioning point. After aligning with the oil injection hole on the syringe, a set screw is screwed into the threaded hole 3 to fix the outer casing. After installation, the angle position of the two pairs of threading holes 2 can be accurately determined. When switching between forward twisting and reverse twisting conditions, there is no need to rotate the outer casing for adjustment.

[0020] The included angle between the two pairs of thread holes 2 is 50-60°.

[0021] In this specific embodiment:

[0022] The included angle between the two pairs of threading holes is 56.3°, which facilitates precise switching between forward and reverse twisting conditions.

[0023] Each threading hole 2 is equipped with a ceramic eye 4 made of alumina to prevent the thread inside the threading hole 2 from being scratched. The diameter of the ceramic eye 4 is 3mm. If the diameter is too large, the thread will vibrate and the hook on the needle bar will have difficulty hooking it. If the diameter is too small, it will easily become clogged and cause the thread to break.

[0024] The outer casing 1 also has through holes 5 on its side, so that the lint inside the outer casing can be thrown out and sucked out through the external suction pipe, thus preventing the lint from affecting the quality of the hollow yarn of the product.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Based on the present utility model and the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hub for a syringe, characterized by: The shell (1) of the outer cover is a cylinder with both ends open, and two pairs of threading holes (2) are radially arranged on the upper part of the shell (1), each pair of threading holes (2) including two symmetrically arranged threading holes (2).

2. A needle shield according to claim 1, wherein: At least one threaded hole (3) is radially arranged on the lower side of the shell (1) of the outer cover.

3. A needle shield according to claim 1 or 2, wherein: The included angle between the two pairs of threading holes (2) is 50-60°.

4. A hub for a syringe as defined in claim 3, wherein: The included angle between the two pairs of threading holes (2) is 56.3°.

5. A needle shield according to claim 1 or 2, wherein: A porcelain eye (4) is arranged in each threading hole (2).

6. A hub for a syringe as defined in claim 5, wherein: The aperture of the porcelain eye (4) is 3mm.

7. A needle shield according to claim 1 or 2, wherein: A through hole (5) is arranged on the side of the shell (1) of the outer cover.

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