Through pin and preparation method thereof

Abstract

The present invention discloses a threading pin, which is characterized in that it includes: a No. 1 steel wire, a No. 2 steel wire, a polyetheretherketone wire, a No. 1 stainless steel capillary and a No. 2 stainless steel capillary, wherein the outer peripheral surface of one end of the No. 1 steel wire and the outer peripheral surfaces of both ends of the No. 2 steel wire are respectively provided with burrs; the burred end of the No. 1 steel wire is introduced into the first end tube cavity of the No. 1 stainless steel capillary and tightly connected, and the combined end of the No. 2 steel wire and the polyetheretherketone wire is introduced into the second end tube cavity of the No. 1 stainless steel capillary and tightly connected; the other end of the No. 2 steel wire is introduced into the first end tube cavity of the No. 2 stainless steel capillary and tightly connected, and the second end tube cavity of the No. 2 stainless steel capillary is introduced into the end of another polyetheretherketone wire and tightly connected. The present invention adopts polyetheretherketone wire for conveyor belt steel buckle threading pin, which has the advantages of wear resistance and not easy to break. Two polyetheretherketone wires are used, and after long-term use, usually only one of them breaks at the same position, and the other can still work normally, and has a long service life.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, and in particular relates to a threading pin and a preparation method thereof. Background Art

[0002] At present, the commonly used conveyor belt buckle pins are stainless steel wires. Stainless steel wires are soft and can be bent in any direction. However, due to the tension of the belt on the steel buckle during use, the surface of the stainless steel wire is squeezed and bent by the steel buckle to form dents, or it breaks due to too many bends, which poses a great safety hazard. When replacing the stainless steel wire, due to the existence of the bending dents, it is very difficult to replace and extract the stainless steel wire, which greatly reduces the working efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a threading pin and a preparation method thereof in view of the deficiencies in the above-mentioned prior art.

[0004] The technical solution adopted by the present invention is:

[0005] A threading pin, characterized by comprising:

[0006] A No. 1 steel wire and a No. 2 steel wire, wherein the diameter of the No. 2 steel wire is smaller than that of the No. 1 steel wire, and burrs are respectively provided on the outer peripheral surface of one end of the No. 1 steel wire and the outer peripheral surfaces of both ends of the No. 2 steel wire;

[0007] Polyetheretherketone wire; and

[0008] A No. 1 stainless steel capillary tube and a No. 2 stainless steel capillary tube, wherein the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube respectively have a first end and a second end, wherein the No. 1 stainless steel capillary tube is adapted to be closely matched with the outer diameter of the No. 1 steel wire, and is adapted to be closely matched with the combined outer diameter of the No. 2 steel wire and the polyetheretherketone wire; and the No. 2 stainless steel capillary tube is adapted to be closely matched with the outer diameter of the No. 2 steel wire, and is adapted to be closely matched with the outer diameter of the polyetheretherketone wire;

[0009] The burred end of the No. 1 steel wire is introduced into the first end lumen of the No. 1 stainless steel capillary and tightly connected, and the combined end of the No. 2 steel wire and the polyetheretherketone wire is introduced into the second end lumen of the No. 1 stainless steel capillary and tightly connected; the other end of the No. 2 steel wire is introduced into the first end lumen of the No. 2 stainless steel capillary and tightly connected, and the second end lumen of the No. 2 stainless steel capillary is introduced into the end of another polyetheretherketone wire and tightly connected.

[0010] The length of the No. 2 steel wire is not longer than 30 cm.

[0011] The outer peripheries of the first ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are chamfered.

[0012] The outer side surfaces of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are axially polished to have smooth surfaces.

[0013] A method for preparing a threading pin, comprising:

[0014] The outer peripheral surface of one end of the No. 1 steel wire and the outer peripheral surfaces of both ends of the No. 2 steel wire are respectively hammered with a hammer or worn with a grinding wheel to form burrs;

[0015] The second ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are expanded in diameter in a tube expander so as to be respectively suitable for the combined outer diameter of the No. 2 steel wire and the polyetheretherketone wire and the outer diameter suitable for the polyetheretherketone wire;

[0016] The burred end of the No. 1 steel wire is introduced into the first end lumen of the No. 1 stainless steel capillary, the combined end of the No. 2 steel wire and the polyetheretherketone wire is introduced into the second end lumen of the No. 1 stainless steel capillary, and then the diameter of the No. 1 stainless steel capillary is compressed in a tube shrinking machine to make them tightly connected; the other end of the No. 2 steel wire is introduced into the first end lumen of the No. 2 stainless steel capillary, the second end lumen of the No. 2 stainless steel capillary is introduced into the end of another polyetheretherketone wire, and then the diameter of the No. 2 stainless steel capillary is compressed in a tube shrinking machine to make them tightly connected.

[0017] The length of the No. 2 steel wire is not longer than 30 cm.

[0018] The outer peripheries of the first ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are chamfered by grinding with a grinding wheel.

[0019] The outer side surfaces of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are polished by a polishing tool to have a smooth surface with axial texture.

[0020] After adopting the above structure, the advantages of the present invention compared with the prior art are: the present invention adopts polyetheretherketone wire for conveyor belt steel buckle pin, which has the advantages of wear resistance and not easy to break. After using two polyetheretherketone wires for a long time, usually only one of them breaks at the same position, and the other can still work normally, with a long service life; when the two polyetheretherketone wires are in use, the part that contacts the inner wall of the steel buckle through hole will form dents, but when replacing, the position of the two polyetheretherketone wires can be manually rubbed so that the smooth side of the polyetheretherketone wire corresponds to the inner wall of the steel buckle through hole. In this way, the two polyetheretherketone wires can be conveniently and quickly pulled out and replaced, which greatly improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a cross-sectional view of a No. 1 stainless steel capillary tube of the present invention. DETAILED DESCRIPTION

[0023] The following description is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention. The present invention is further described below in conjunction with the drawings and embodiments.

[0024] For example, see Figure 1 to Figure 2 As shown: A through pin, characterized in that it includes: a No. 1 steel wire 1, a No. 2 steel wire 2 with a length not longer than 30 cm, a polyetheretherketone wire 3, a No. 1 stainless steel capillary 4 and a No. 2 stainless steel capillary 5; the diameter of the No. 2 steel wire 2 is smaller than that of the No. 1 steel wire 1, and the outer peripheral surface of one end of the No. 1 steel wire 1 and the outer peripheral surfaces of both ends of the No. 2 steel wire 2 are respectively provided with burrs 6; the No. 1 stainless steel capillary 4 and the No. 2 stainless steel capillary 5 have a first end and a second end respectively, the No. 1 stainless steel capillary 4 is suitable for tightly fitting with the outer diameter of the No. 1 steel wire 1, and is suitable for tightly fitting with the combined outer diameter of the No. 2 steel wire 2 and the polyetheretherketone wire 3; the No. 2 stainless steel capillary 5 is suitable for tightly fitting with the outer diameter of the No. 2 steel wire 2, and is suitable for tightly fitting with the combined outer diameter of the No. 2 steel wire 2 and the polyetheretherketone wire 3. The outer diameter of the wire 3 is tightly matched; the burred end 6 of the No. 1 steel wire 1 is introduced into the first end lumen of the No. 1 stainless steel capillary 4 and tightly connected, and the combined end of the No. 2 steel wire 2 and the polyetheretherketone wire 3 is introduced into the second end lumen of the No. 1 stainless steel capillary 4 and tightly connected; the other end of the No. 2 steel wire 2 is introduced into the first end lumen of the No. 2 stainless steel capillary 5 and tightly connected, and the second end lumen of the No. 2 stainless steel capillary 5 is introduced into the end of another polyetheretherketone wire 3 and tightly connected; the first ends of the No. 1 stainless steel capillary 4 and the No. 2 stainless steel capillary 5 are provided with chamfers 7 on the outer periphery for easy passage; the outer side surfaces of the No. 1 stainless steel capillary 4 and the No. 2 stainless steel capillary 5 are axially polished to have a smooth surface for easy passage.

[0025] A method for preparing a threading pin, characterized in that it includes: the outer peripheral surface of one end of a No. 1 steel wire 1 and the outer peripheral surfaces of both ends of a No. 2 steel wire 2 with a length not longer than 30 cm are hammered with a hammer or worn with a grinding wheel to form burrs 6; the second ends of a No. 1 stainless steel capillary 4 and a No. 2 stainless steel capillary 5 are expanded in diameter in a tube expander to be suitable for the combined outer diameter of the No. 2 steel wire 2 and the polyetheretherketone wire 3 and the outer diameter of the polyetheretherketone wire 3 respectively; the burred end 6 of the No. 1 steel wire 1 is introduced into the first end tube cavity of the No. 1 stainless steel capillary 4, and the combined end of the No. 2 steel wire 2 and the polyetheretherketone wire 3 is introduced into the second end tube cavity of the No. 1 stainless steel capillary 4, and then the No. 1 stainless steel capillary 4 is compressed in a tube shrinking machine. The tube diameter of No. 2 stainless steel capillary 5 is tightly connected, and the burr 6 makes its connection with No. 1 stainless steel capillary 4 more firmly; the other end of No. 2 steel wire 2 is introduced into the first end tube cavity of No. 2 stainless steel capillary 5, and the second end tube cavity of No. 2 stainless steel capillary 5 is introduced into the end of another polyetheretherketone wire 3, and then the tube diameter of No. 2 stainless steel capillary 5 is compressed in a tube shrinking machine to make it tightly connected, and the burr 6 makes its connection with No. 2 stainless steel capillary 5 more firmly; the outer periphery of the first end of No. 1 stainless steel capillary 4 and No. 2 stainless steel capillary 5 is polished with a grinding wheel to form a chamfer 7; the outer side surfaces of No. 1 stainless steel capillary 4 and No. 2 stainless steel capillary 5 are polished with a grinding tool to have a smooth surface with axial texture.

[0026] The present invention uses polyetheretherketone wire 3 to replace the existing stainless steel wire. The polyetheretherketone wire 3 is formed by polyetheretherketone extrusion. Polyetheretherketone is a special engineering plastic with excellent performance. Compared with other special engineering plastics, it has more significant advantages, such as resistance to positive high temperature of 260 degrees, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, flame retardancy, peeling resistance, wear resistance, resistance to strong nitric acid, concentrated sulfuric acid, radiation resistance, and super strong mechanical properties. It can be used for high-end machinery, nuclear engineering, aviation and other technologies. Polyetheretherketone wire 3 is used for conveyor belt steel buckle pins, which has the advantages of wear resistance and not easy to break. Two polyetheretherketone wires 3 are used. After long-term use, usually only one of the same part is broken, and the other can still work normally, with a long service life.

[0027] When in use, the No. 1 steel wire 1 is guided through the through hole of the steel buckle, and the No. 1 steel wire 1 is pulled so that the two PEEK wires 3 pass through the steel buckle to complete the connection of the belt, and finally the No. 1 steel wire 1 and the No. 2 steel wire 2 are cut off. The No. 1 stainless steel capillary 4 and the No. 2 stainless steel capillary 5 successively connect the two PEEK wires 3, so that their combined wire diameter increases linearly and slowly, which is convenient for passing the pin through the through hole of the steel buckle. When the two PEEK wires 3 are in use, the part that contacts the inner wall of the through hole of the steel buckle will form a dent, but when replacing, the position of the two PEEK wires 3 can be manually rubbed so that the smooth side of the PEEK wire 3 corresponds to the inner wall of the through hole of the steel buckle, so that the two PEEK wires 3 can be easily and quickly pulled out and replaced, which greatly improves the working efficiency.

Claims

1. A threading pin, characterized in that: include: A No. 1 steel wire and a No. 2 steel wire, wherein the diameter of the No. 2 steel wire is smaller than that of the No. 1 steel wire, and the outer peripheral surface of one end of the No. 1 steel wire and the outer peripheral surfaces of both ends of the No. 2 steel wire are respectively provided with burrs; a polyetheretherketone wire; and a No. 1 stainless steel capillary and a No. 2 stainless steel capillary, wherein the No. 1 stainless steel capillary and the No. 2 stainless steel capillary respectively have a first end and a second end, wherein the No. 1 stainless steel capillary is suitable for tightly fitting with the outer diameter of the No. 1 steel wire, and is suitable for tightly fitting with the combined outer diameter of the No. 2 steel wire and the polyetheretherketone wire; the No. 2 stainless steel capillary is suitable for tightly fitting with the outer diameter of the No. 2 steel wire, and is suitable for tightly fitting with the outer diameter of the polyetheretherketone wire; The burred end of the No. 1 steel wire is introduced into the first end lumen of the No. 1 stainless steel capillary and tightly connected, and the combined end of the No. 2 steel wire and the polyetheretherketone wire is introduced into the second end lumen of the No. 1 stainless steel capillary and tightly connected; the other end of the No. 2 steel wire is introduced into the first end lumen of the No. 2 stainless steel capillary and tightly connected, and the second end lumen of the No. 2 stainless steel capillary is introduced into the end of another polyetheretherketone wire and tightly connected.

2. A threading pin according to claim 1, characterized in that: The length of the No. 2 steel wire is not longer than 30 cm.

3. A threading pin according to claim 1, characterized in that: The outer peripheries of the first ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are chamfered.

4. A threading pin according to claim 1, characterized in that: The outer side surfaces of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are axially polished to have smooth surfaces.

5. A method for preparing a threading pin, characterized in that: include: The outer peripheral surface of one end of the No. 1 steel wire and the outer peripheral surfaces of both ends of the No. 2 steel wire are respectively hammered with a hammer or worn with a grinding wheel to form burrs; The second ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are enlarged in diameter in a tube expander so as to be respectively suitable for the combined outer diameter of the No. 2 steel wire and the polyetheretherketone wire and the outer diameter of the polyetheretherketone wire; The burred end of the No. 1 steel wire is introduced into the first end lumen of the No. 1 stainless steel capillary, the combined end of the No. 2 steel wire and the polyetheretherketone wire is introduced into the second end lumen of the No. 1 stainless steel capillary, and then the diameter of the No. 1 stainless steel capillary is compressed in a tube shrinking machine to make them tightly connected; the other end of the No. 2 steel wire is introduced into the first end lumen of the No. 2 stainless steel capillary, the second end lumen of the No. 2 stainless steel capillary is introduced into the end of another polyetheretherketone wire, and then the diameter of the No. 2 stainless steel capillary is compressed in a tube shrinking machine to make them tightly connected.

6. A method for preparing a threading pin according to claim 5, characterized in that: The length of the No. 2 steel wire is not longer than 30 cm.

7. A method for preparing a threading pin according to claim 5, characterized in that: The outer peripheries of the first ends of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are chamfered by grinding with a grinding wheel.

8. A method for preparing a threading pin according to claim 5, characterized in that: The outer side surfaces of the No. 1 stainless steel capillary tube and the No. 2 stainless steel capillary tube are polished by a polishing tool to have a smooth surface with axial texture.

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