Improved structure of needle cylinder

Abstract

The utility model discloses an improved structure of a needle cylinder. The improved structure comprises an inner cylinder and an outer cylinder, the inner cylinder is fixedly sleeved in the outer cylinder; the inner cylinder is an annular component, a circle of protruding edge protruding outwards is arranged at the bottom of the inner cylinder, and an air inlet and an air outlet are formed in the middle of the inner cylinder. The outer cylinder is an annular component, the inner diameter of the outer cylinder is larger than the outer diameter of the inner cylinder, an annular groove surrounding the whole circumference is formed in the inner wall of the outer cylinder, the outer cylinder is connected to the upper portion of the inner cylinder in a sleeved mode, the bottom face of the outer cylinder abuts against the protruding edge of the inner cylinder, an air channel is formed between the annular groove in the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the air inlet hole and the air outlet hole in the inner cylinder are both communicated with the air channel. As the inner cylinder and the outer cylinder both have larger wall thickness and high strength, the condition of air passage explosion is avoided, and the advantage of high strength is achieved; in addition, due to the fact that a plurality of threaded grooves are formed in the wall of the annular groove, the threaded grooves have a better heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of large circular knitting machines, in particular to an improved needle cylinder structure. Background Art

[0002] Large circular knitting machines are mainly used for weaving circular knitted fabrics, terry cloth, knitted jacquard terry cloth, etc. Large circular knitting machines use electric motors and their transmission gears to drive the large disc gear and the needle cylinder to rotate synchronously, while the knitting needle moves up and down along the mountain corners in the needle groove in the needle cylinder. During the weaving process, the sinker moves back and forth along the mountain corners on the needle groove on the needle cylinder. The knitting needle will constantly rub against the needle groove of the needle cylinder to generate high temperature. The high temperature causes the needle cylinder to deform due to thermal expansion, which reduces the effect of the lubricating oil, increases friction, causes the needle cylinder to wear, and leads to incompleteness of the fabric. For the heat dissipation device of the large circular knitting machine needle cylinder and knitting needle, oil is usually sprayed on the needle groove to reduce friction. A novel syringe heat dissipation device (application number CN201621110139.2) is disclosed, which mainly consists of a syringe 1' and a sealing plate 16'. The sealing plate 16' is sealed on the inner wall of the syringe 1' to form an air flow channel 11' on the syringe 1', and an air inlet 12' and an exhaust port 13' are opened in the syringe 1'. Due to the high pressure in the air flow channel 11', the sealing plate 16' will be pushed open, causing the air flow channel 11' to burst and damage the syringe 1'. Utility Model Content

[0003] The utility model aims to provide an improved syringe structure with high strength and good heat dissipation effect.

[0004] To achieve the above purpose, the technical solution of the utility model is:

[0005] The utility model is an improved structure of a syringe, comprising an inner cylinder and an outer cylinder; the inner cylinder is fixedly sleeved in the outer cylinder; the inner cylinder is an annular component, the bottom of which is provided with a circle of convex edges protruding outwards, and the middle of the inner cylinder is provided with an air inlet and an air outlet; the outer cylinder is an annular component, the inner diameter of which is larger than the outer diameter of the inner cylinder, the inner wall of the outer cylinder is provided with an annular groove surrounding the entire circumference, the outer cylinder is sleeved on the upper part of the inner cylinder and the bottom surface of the outer cylinder abuts against the convex edge of the inner cylinder, an airway is formed between the annular groove on the inner wall of the outer cylinder and the outer wall of the inner cylinder, and the air inlet and the air outlet on the inner cylinder are both communicated with the airway.

[0006] The convex edge of the inner cylinder is provided with more than two through holes, and the bottom surface of the outer cylinder is provided with more than two screw holes. Bolts pass through the through holes on the convex edge of the inner cylinder and are fixedly screwed into the screw holes on the bottom surface of the outer cylinder to lock the inner cylinder and the outer cylinder.

[0007] Two sealing grooves are provided on the outer wall of the outer cylinder, and the two sealing grooves are respectively arranged above and below the airway. More than one sealing ring is respectively sleeved in the sealing grooves to play the role of sealing the airway.

[0008] A plurality of thread grooves are arranged on the annular groove wall of the inner wall of the outer cylinder.

[0009] The air inlet and air outlet on the inner cylinder are oblique through holes.

[0010] After adopting the above scheme, the utility model is mainly composed of an inner tube and an outer tube, and an airway is formed between the inner tube and the outer tube, and the airway plays a role in heat dissipation. Since both the inner tube and the outer tube have a large wall thickness and high strength, the airway will not burst, and it has the advantage of high strength. In addition, since a plurality of thread grooves are provided on the wall of the annular groove of the utility model, the thread groove has a better heat dissipation effect.

[0011] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of an existing patent;

[0013] Figure 2 It is an axonometric drawing of the utility model;

[0014] Figure 3 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0015] like Figure 2 , Figure 3 As shown, the utility model is an improved structure of a syringe, comprising an inner cylinder 1, an outer cylinder 2, a sealing ring 3, and a bolt 4.

[0016] The inner cylinder 1 is fixedly sleeved in the outer cylinder 2 .

[0017] The inner tube 1 is an annular component, and its bottom has a circle of outwardly protruding convex edges 11. The middle part of the inner tube 1 is provided with an air inlet 12 and an air outlet 13, and the air inlet 12 and the air outlet 13 are oblique through holes; the outer tube 2 is an annular component, and its inner diameter is larger than the outer diameter of the inner tube 1. The inner wall of the outer tube 2 is provided with an annular groove 21 surrounding the entire circumference, and the wall of the annular groove 21 is provided with a plurality of thread grooves for better heat dissipation. The outer tube 2 is sleeved on the upper part of the inner tube 1 and the bottom surface of the outer tube 2 is in contact with the convex edge 11 of the inner tube 1, and an airway is formed between the annular groove 21 on the inner wall of the outer tube 2 and the outer wall of the inner tube 1, and the air inlet 12 and the air outlet 13 on the inner tube 1 are both connected to the airway.

[0018] Two sealing grooves 22 are formed on the outer wall of the outer tube 2. The two sealing grooves 22 are respectively arranged above and below the airway. A sealing ring 3 is respectively sleeved in the sealing groove 22 to seal the airway.

[0019] In this embodiment, eight through holes 14 are formed on the flange 11 of the inner cylinder 1, and eight screw holes 23 are formed on the bottom surface of the outer cylinder 2. The bolts 4 pass through the through holes 14 on the flange 11 of the inner cylinder 1 and are fixedly screwed into the screw holes 23 on the bottom surface of the outer cylinder 2, thereby locking the inner cylinder 1 and the outer cylinder 2. It should be noted that the number of the through holes 14 and the screw holes 23 is 8-12.

[0020] The working principle of this utility model:

[0021] The utility model is mainly composed of an inner tube 1 and an outer tube 2, and an airway is formed between the inner tube 1 and the outer tube 2. The gas enters the airway from the air inlet 12 on the inner tube 1 and is discharged from the air outlet 13. The airway plays a role in heat dissipation. Since the inner tube 1 and the outer tube 2 both have a large wall thickness and high strength, the airway will not burst. In addition, since a plurality of thread grooves are provided on the wall of the annular groove 21, the thread grooves can better dissipate heat.

[0022] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. An improved syringe structure, characterized in that: It comprises an inner tube and an outer tube; the inner tube is fixedly sleeved in the outer tube; the inner tube is an annular component, the bottom of which has a circle of convex edges protruding outwards, and the middle of the inner tube is provided with an air inlet and an air outlet; the outer tube is an annular component, the inner diameter of which is larger than the outer diameter of the inner tube, the inner wall of the outer tube has an annular groove surrounding the entire circumference, the outer tube is sleeved on the upper part of the inner tube and the bottom surface of the outer tube abuts against the convex edge of the inner tube, an airway is formed between the annular groove on the inner wall of the outer tube and the outer wall of the inner tube, and the air inlet and the air outlet on the inner tube are both connected to the airway.

2. The improved syringe structure according to claim 1, characterized in that: The convex edge of the inner cylinder is provided with more than two through holes, and the bottom surface of the outer cylinder is provided with more than two screw holes. Bolts pass through the through holes on the convex edge of the inner cylinder and are fixedly screwed into the screw holes on the bottom surface of the outer cylinder to lock the inner cylinder and the outer cylinder.

3. The improved syringe structure according to claim 1, characterized in that: Two sealing grooves are provided on the outer wall of the outer cylinder, and the two sealing grooves are respectively arranged above and below the airway. More than one sealing ring is respectively sleeved in the sealing grooves to play the role of sealing the airway.

4. The improved syringe structure according to claim 1, characterized in that: A plurality of thread grooves are arranged on the annular groove wall of the inner wall of the outer cylinder.

5. The improved syringe structure according to claim 1 is characterized in that: The air inlet and air outlet on the inner cylinder are oblique through holes.

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