Metal powder compactness detection device

Abstract

The utility model provides a metal powder compactness detection device which is arranged on a detection station on the rear side of a sealing station and comprises an air cylinder, and the extending direction of a piston rod of the air cylinder directly faces a cored wire; a travel switch is installed on a cylinder body of the air cylinder and used for detecting the extending length of the piston rod. Due to the fact that the interior of the core-spun yarn is the metal powder, when the piston rod applies pressure to the outer wall of the core-spun yarn, the outer wall of the core-spun yarn deforms, the density of the metal powder at the deformation position is increased, and the extension resistance of the piston rod is also increased; therefore, when the extension distance of the piston rod exceeds the set value, the amount of the metal powder at the detection part is too small. When the extension distance of the piston rod is smaller than a set value, excessive metal powder at the detection part can be judged; therefore, whether the metal powder in the cored wire is proper or not can be accurately detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to core-spun yarn technical field, specifically a kind of metal powder compactness detection device. BACKGROUND

[0002] Core-spun yarn is a kind of product by alloy powder being wrapped by steel band, its production process is generally as follows: 1, steel band is linearly conveyed by conveyor; 2, when steel band runs to bending station, steel band is bent into U shape with opening upward along its length direction; 3, when steel band runs to feeding station, metal powder falls in the U-shaped groove of steel band; 4, when steel band runs to sealing station, extrusion wheel extrudes the opening end of steel band, so that it is closed.

[0003] Due to core-spun yarn, metal powder distribution is uneven in production process, such as metal powder distribution is too little or too much, which will affect the performance and quality of core-spun yarn.

[0004] Therefore, how to detect whether the metal powder in core-spun yarn is appropriate has become a problem to be solved by the person skilled in the art. INVENTION CONTENTS

[0005] To solve the technical problem in the background art, the utility model discloses a kind of metal powder compactness detection device.

[0006] The utility model provides a kind of metal powder compactness detection device, it is installed in the detection station of sealing station rear side, including cylinder, the extension direction of its piston rod is opposite core-spun yarn;

[0007] Stroke switch is installed on the cylinder body of cylinder, for detecting the extension length of piston rod, so as to calculate the depth of recess of core-spun yarn.

[0008] Since the inside of core-spun yarn is metal powder, when piston rod presses the outer wall of core-spun yarn, the outer wall of core-spun yarn will be deformed, the density of metal powder at its deformation place will increase, and the resistance of piston rod extension will also increase;When resistance is equal to the driving force of piston rod, piston rod stops extending;Therefore, when the extension distance of piston rod exceeds the set value, it can be judged that the amount of metal powder of detection part is too little;When the extension distance of piston rod is less than the set value, it can be judged that the amount of metal powder of detection part is too much;Thus, whether the metal powder in core-spun yarn is appropriate can be accurately detected.

[0009] Piston rod directly presses core-spun yarn, and its driving force requirement is relatively large, so the cost of cylinder is relatively high, based on this, further improvement lies in that: the utility model further includes pressing rod, one end is hinged, the other end is hinged with the end of piston rod;The middle part of pressing rod is opposite to the core-spun yarn completed by sealing. According to the principle of lever, the driving force of cylinder can be reduced, and the cost can be reduced.

[0010] Since the cored wire is in a moving state, when the pressure rod exerts pressure on the cored wire, relative sliding occurs, and the cored wire is prone to wear. Based on this, the further improvement is that a pressure roller in rolling connection is arranged at the middle position of the pressure rod; the pressure roller exerts pressure on the cored wire, and rolls along the moving direction of the cored wire when exerting pressure.

[0011] Since the cored wire is flexible, when the pressure roller exerts pressure on the cored wire, the cored wire will bend downward, causing the piston rod to excessively extend downward, and causing the travel switch to have data errors. Based on this, the further improvement is that the detection station is provided with a guide wheel for upwardly supporting the cored wire; the pressure roller is located directly above the guide wheel.

[0012] Since the sealing portion of the cored wire is located at the upper end and has high strength, data deviation is prone to occur. Based on this, the further improvement is that the detection station is provided with a support roller arranged horizontally; the support roller abuts against one side of the cored wire; the pressure roller is also arranged horizontally and is located at the other side of the cored wire; the pressure roller and the support roller are located at the same radial position of the cored wire.

[0013] When the data detected by the travel switch exceeds the set value, the finished cored wire can only be scrapped, which will cause waste of materials. Based on this, the further improvement is that the last station of the sealing station is a feeding station; the feeding station is provided with a feeding hopper for inputting metal powder into the cored wire; an adjusting valve is installed at the inlet of the feeding hopper; the adjusting valve is electrically connected with the travel switch, and the opening degree of the adjusting valve is adjusted by the travel switch. Since the set value of the travel switch cannot be accurately to a certain value, it must be an interval value. As long as the data detected by the travel switch is within this interval, it can be judged that the cored wire meets the quality requirements. Therefore, when the data detected by the travel switch approaches the upper limit of the interval, the opening degree of the adjusting valve can be reduced to reduce the flow of metal powder, so as to avoid the detected data exceeding the upper limit of the interval; when the data detected by the travel switch approaches the lower limit of the interval, the opening degree of the adjusting valve can be increased to increase the flow of metal powder, so as to avoid the detected data exceeding the lower limit of the interval. In this way, the data detected by the travel switch is always within the set interval, and the quality of the cored wire is always stable, so that waste is avoided.

[0014] The beneficial effects of the utility model are: since the inside of the cored wire is metal powder, when the piston rod exerts pressure on the outer wall of the cored wire, the outer wall of the cored wire will deform, the density of the metal powder at the deformation position will increase, and the resistance to the extension of the piston rod will also increase; when the resistance is equal to the driving force of the piston rod, the extension of the piston rod stops; therefore, when the extension distance of the piston rod exceeds the set value, it can be judged that the amount of metal powder at the detection position is too small; when the extension distance of the piston rod is less than the set value, it can be judged that the amount of metal powder at the detection position is too large; thus, the amount of metal powder in the cored wire can be accurately detected. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further explained in connection with the drawings and examples.

[0016] Figure 1 is the front view of example one in the utility model;

[0017] Figure 2 is the top view of example two in the utility model;

[0018] In the figure: 1, cylinder; 2, piston rod; 3, travel switch; 4, pressure bar; 5, pressure wheel; 6, guide wheel; 7, support wheel; 8, core-spun yarn; 9, feeding hopper; 10, regulating valve; 20, feeding station; 30, sealing station; 40, detection station. DETAILED DESCRIPTION

[0019] The utility model is further explained in connection with the drawings and examples. These drawings are all simplified schematic diagrams, just with the schematic way to illustrate the basic structure of the utility model, so it just shows the structure related to the utility model.

[0020] Example one:

[0021] As Figure 1 shown, the utility model discloses a kind of metal powder compactness detection device, installs in the detection station 40 of sealing station 30 rear side, including cylinder 1, its piston rod 2 downward direction of extension is opposite core-spun yarn 8.Cylinder 1 is equipped with travel switch 3 on the cylinder body, for detecting the extension length of piston rod 2, to calculate the depth of recess of core-spun yarn 8.

[0022] The utility model also includes pressure bar 4, one end is hinged with wall body or fixed frame, the other end is hinged with the lower end of piston rod 2;The middle part of pressure bar 4 is opposite to the core-spun yarn 8 completed by sealing.So according to the principle of lever, the driving force of cylinder 1 can be reduced, and cost is reduced.

[0023] The middle position of pressure bar 4 is provided with pressure wheel 5 of rolling connection;Pressure wheel 5 exerts pressure to core-spun yarn 8, and when exerting pressure, pressure wheel 5 rolls along the moving direction of core-spun yarn 8.So when pressure wheel 5 exerts pressure to core-spun yarn 8, it will rotate following the movement of core-spun yarn 8 under the action of static friction, to avoid that the outer wall of core-spun yarn 8 is abraded.

[0024] Detection station 40 is provided with guide wheel 6, for supporting core-spun yarn 8 upwards;Pressure wheel 5 is located directly above guide wheel 6.So guide wheel 6 is set to bear the pressure of pressure wheel 5, avoid that core-spun yarn 8 below pressure wheel 5 has no support, and it is curved downwards under the action of its flexibility, leading to that piston rod 2 is excessively extended downwards, and travel switch 3 measures wrong data.

[0025] When the data detected by the travel switch 3 exceeds the set value, the finished cored wire 8 can only be scrapped, which will cause waste of materials, therefore, the following design is made: the last work station of the sealing station 30 is the feeding station 20; the feeding station 20 is provided with a feeding hopper 9 for inputting metal powder into the cored wire 8; the inlet of the feeding hopper 9 is provided with an adjusting valve 10; the adjusting valve 10 is electrically connected with the travel switch 3, and the opening degree thereof is adjusted by the travel switch 3. Since the set value of the travel switch 3 cannot be accurately set to a certain value, it must be an interval value, as long as the data detected by the travel switch 3 floats within the interval, it can be judged that the cored wire 8 meets the quality requirement. Therefore, when the data detected by the travel switch 3 approaches the upper limit of the interval, the opening degree of the adjusting valve 10 can be reduced to reduce the flow of metal powder, so as to avoid the data exceeding the upper limit of the interval; when the data detected by the travel switch 3 approaches the lower limit of the interval, the opening degree of the adjusting valve 10 can be increased to increase the flow of metal powder, so as to avoid the data exceeding the lower limit of the interval; in this way, the data detected by the travel switch 3 always floats within the set interval value, and the quality of the cored wire 8 is always stable, so that waste is avoided.

[0026] Compared with the prior art, the beneficial effects of the embodiment are: since the inside of the cored wire 8 is metal powder, when the piston rod 2 exerts pressure on the outer wall of the cored wire 8, the outer wall of the cored wire 8 will deform, the density of the metal powder at the deformed position will increase, and the resistance to the extension of the piston rod 2 will also increase; when the resistance is equal to the driving force of the piston rod 2, the piston rod 2 stops extending; therefore, when the extension distance of the piston rod 2 exceeds the set value, it can be judged that the amount of metal powder at the detection position is too small; when the extension distance of the piston rod 2 is less than the set value, it can be judged that the amount of metal powder at the detection position is too much; thus, the amount of metal powder in the cored wire 8 can be accurately detected.

[0027] Embodiment two:

[0028] Compared with embodiment one, the difference is: as shown in Figure 2 , since the sealing position of the cored wire 8 is located at the upper end and has high strength, data deviation is prone to occur, therefore, the detection station 40 is provided with a horizontally arranged supporting wheel 7; the supporting wheel 7 abuts against one side of the cored wire 8; the pressing wheel 5 is also horizontally arranged and located at the other side of the cored wire 8; the pressing wheel 5 and the supporting wheel 7 are located at the same radial position of the cored wire 8. In this way, the force application point of the pressing wheel 5 is located at the sealing position of the cored wire 8, and the data detected by the travel switch 3 is more accurate.

[0029] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A metal powder compactness detection apparatus, characterized by: A detection station (40) is installed at the rear side of the sealing station (30), which includes a cylinder (1) whose piston rod (2) is directed to the cored wire (8); A stroke switch (3) is installed on the cylinder (1) to detect the extension length of the piston rod (2) and calculate the recess depth of the cored wire (8).

2. The metal powder density detection apparatus according to claim 1, characterized by: A pressing rod (4) is also included, which is hinged at one end and hinged at the other end to the end of the piston rod (2); The middle part of the pressing rod (4) is directed to the cored wire (8) after sealing.

3. The metal powder density detection apparatus of claim 2, wherein: A pressure roller (5) is arranged at the middle part of the pressing rod (4) in a rolling connection; the pressure roller (5) presses the cored wire (8) and rolls along the moving direction of the cored wire (8) when pressing.

4. The metal powder density detection apparatus according to claim 3, characterized by: The detection station (40) is provided with a guide wheel (6) to support the cored wire (8) upward; The pressure roller (5) is located directly above the guide wheel (6).

5. The metal powder density detection apparatus of claim 4, wherein: The detection station (40) is provided with a horizontally arranged support wheel (7); the support wheel (7) abuts against one side of the cored wire (8); The pressure roller (5) is also horizontally arranged and located at the other side of the cored wire (8); The pressure roller (5) and the support wheel (7) are located at the same radial position of the cored wire (8).

6. The metal powder density detection apparatus of claim 1, wherein: The last station of the sealing station (30) is a feeding station (20); The feeding station (20) is provided with a feeding hopper (9) to input metal powder into the cored wire (8); An adjusting valve (10) is installed at the inlet of the feeding hopper (9); The adjusting valve (10) is electrically connected with the stroke switch (3), and the opening degree of the adjusting valve (10) is adjusted by the stroke switch (3).

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