阅读说明：本技术 电弧烧除系统及使用该系统所制得的纸带 (Electric arc burning-off system and paper tape manufactured by using same ) 是由 周全 马哲 李卫勇 陈钢 孙玉龙 张华� 周义彬 王亿磊 于 2021-07-20 设计创作，主要内容包括：本发明涉及一种电弧烧除系统及使用该系统所制得的纸带,其中,该系统包括：产生持续静电的静电发生装置、分别与静电发生装置电连的正电极结构和负电极结构、以及提供高压气体的进风机构,所述正电极结构和负电极结构之间形成呈收紧导流状的电弧腔体,所述电弧腔体内充斥的电弧经导流后集中喷向纸带底面。本发明的正、负电极结构之间产生的电弧,在进风机构提供的高压气体作用下,经过电弧腔体的收紧导流后,从电弧腔体的出口喷出,形成稳定的锥形电弧,喷向纸带底面进行烧毛,经高压气体吹出的电弧更稳定,不会受外界环境影响发生窜弧,使收纳孔内毛屑去除干净,孔型良好。(The invention relates to an electric arc burning-off system and a paper tape manufactured by using the same, wherein the system comprises: the static generating device generates continuous static, the positive electrode structure and the negative electrode structure which are respectively connected with the static generating device and the air inlet mechanism which provides high-pressure gas, an electric arc cavity which is in a tightening flow guide shape is formed between the positive electrode structure and the negative electrode structure, and electric arcs which are filled in the electric arc cavity are intensively sprayed to the bottom surface of the paper tape after being guided. The electric arc generated between the positive electrode structure and the negative electrode structure is sprayed out from the outlet of the electric arc cavity after being tightened and guided by the electric arc cavity under the action of high-pressure gas provided by the air inlet mechanism to form stable conical electric arc, and the stable conical electric arc is sprayed to the bottom surface of the paper tape for singeing.)

1. An arc burn-off system, comprising:

the static generating device generates continuous static, the positive electrode structure and the negative electrode structure which are respectively connected with the static generating device and the air inlet mechanism which provides high-pressure gas, an electric arc cavity which is in a tightening flow guide shape is formed between the positive electrode structure and the negative electrode structure, and electric arcs which are filled in the electric arc cavity are intensively sprayed to the bottom surface of the paper tape after being guided.

2. The arc burn-off system of claim 1 wherein said positive electrode structure is a hollow structure with a closed upper end, located in the center of the arc chamber; the negative electrode structure is a hollow structure with the upper part in a tightened flow guiding shape and the lower part with the inner diameter larger than that of the positive electrode structure, and is positioned at the periphery of the positive electrode structure, and the space between the negative electrode structure and the positive electrode structure forms the arc cavity.

3. The arc burning system of claim 1 wherein a ceramic flow directing structure having a plurality of flow directing holes with the same angle of inclination is added between the high pressure gas inlet and the arc chamber, and the flow directing holes are circumferentially distributed.

4. The arc burning system of claim 1, wherein a ceramic insulating member is provided along an inner wall at a lower end of the negative electrode structure.

5. The arc burning system of claim 4, wherein a cooling jacket is provided around the negative electrode structure, and a plurality of concentric through holes communicating with the cooling jacket are provided simultaneously in the ceramic insulating member and the lower end of the negative electrode structure.

6. The arc burning system of claim 1, wherein the arc chamber is provided with a nozzle for arc ejection, the nozzle having a bore diameter of 2.3-2.8mm and a height of 3-5 mm.

7. The arc burning system of claim 1 wherein the distance between the nozzle and the bottom surface of the paper tape is 1-3 mm.

8. The arc burning system of claim 1, wherein the air inlet mechanism controls the air pressure of the gas to be 0.028-0.032 Mpa.

9. The arc bum-out system of claim 1, wherein the static electricity generating means is provided with power regulation, start-up delay, power delay functions, utilizing 0-8 KV/m²The high frequency dc voltage generates a continuous static electricity.

10. A paper tape characterized by being subjected to a singeing treatment by an arc burn-out system as claimed in any one of claims 1 to 10.

Technical Field

The invention relates to the technical field of paper tape manufacturing, in particular to an electric arc burning-out system for paper fiber flock in paper tape accommodating holes and a paper tape manufactured by using the same.

Background

At present, paper tapes are mainly used for packaging and carrying chip electronic components, and are generally prepared by cutting raw paper into strips, and punching the strips through punching equipment to form index holes and accommodating holes. Due to the characteristics of the paper pulp fibers, the fluff is inevitably present in the holes, and especially when the fluff is present in the accommodating holes, the filling and taking of the chip electronic component are affected. Therefore, a process of removing burrs (also called singeing) from the paper tape after the punching process is completed is required.

In order to reduce energy consumption and to make the hole pattern after the singeing process square and the flock clean, an electric spark singeing device has been proposed, as disclosed in patent No. CN210850551U, in which at least one set of arc bars are arranged on the upper and lower sides of a paper tape, and the arc bars are powered by a high-frequency direct current power supply to generate an electric arc and remove the flock; for example, patent publication No. CN205364637U discloses a method for removing flocks by providing upper and lower electrode groups on the upper and lower sides of a paper tape, each electrode group including 2 electrode tips, and performing secondary arc burning to improve the flock removal rate.

The invention discloses a deburring system and a deburring method for paper carrier tapes, which are disclosed in the patent application with the patent publication number of CN104942880A, wherein an anode electrode and a cathode electrode are symmetrically fixed above and below the paper carrier tape which is discharged at a constant speed respectively, and the anode electrode and the cathode electrode are connected through a high-voltage bag and form electric arcs in punched holes on the paper carrier tape. The patent publication No. CN 105500459B's that the applicant earlier studied issued a system for getting rid of paper carrier band burr, including the neutral gear district that supplies the carrier band to pass through and with the singeing device that the neutral gear cooperation set up, the singeing device is including aiming at the positive anode structure of carrier band that the neutral gear district passed through, aim at the negative pole structure of carrier band reverse side and connect negative and positive pole structure and the high-voltage package that drives arc release, the anode structure with the negative pole structure forms horizontal action district on the horizontal direction, the tip of anode structure extremely the carrier band that the neutral gear district passed through openly with the tip of cathode structure all is equipped with axial action district to the carrier band back, the tip of cathode structure still is provided with the delay district to the carrier band back. The high-voltage pack drives the electric spark to be generated between the cathode and the anode, burrs are burnt out, the method is simple and efficient, the transverse action area and the axial action area of the anode and cathode structures form an electric spark action area, and the arrangement of the areas is delayed, so that the electric spark is basically arranged on the back of the paper tape, and the quality and the appearance of the carrier tape are guaranteed.

Because the electric arcs generated by the electrodes arranged on the two sides of the paper tape need to penetrate through the upper surface and the lower surface of the paper tape to burn off the flock, the electric arcs are easily subjected to arc channeling phenomenon under the influence of objective factors such as current, electrode shape, air flow and the like, so that the front surface and the side surface of the paper tape are burnt, and the appearance of a product is influenced. Further, the arc generated by the electrode has a limited action area when passing through the receiving hole, and thus has a problem of insufficient or excessive burn-off.

Disclosure of Invention

The invention aims to provide an electric arc burning-out system, which adopts an electric arc cavity structure with an electric arc diversion and concentration function, ensures that electric arcs blown out by high-pressure gas are more stable, ensures that burrs in a containing hole are completely removed, has good hole pattern, and cannot be influenced by external environment to generate arc channeling, thus leading to poor appearance of a paper tape.

The invention adopts the following technical scheme:

an arc burning system comprising: the static generating device generates continuous static, the positive electrode structure and the negative electrode structure which are respectively connected with the static generating device and the air inlet mechanism which provides high-pressure gas, an electric arc cavity which is in a tightening flow guide shape is formed between the positive electrode structure and the negative electrode structure, and electric arcs which are filled in the electric arc cavity are intensively sprayed to the bottom surface of the paper tape after being guided.

The electric arc that produces between positive and negative electrode structure under the high-pressure gas effect that air inlet mechanism provided, through the tightening up water conservancy diversion back of electric arc cavity, from the export blowout of electric arc cavity, form stable toper electric arc, spout and carry out the singeing to the paper tape bottom surface, the electric arc that blows out through high-pressure gas is more stable, can not receive external environment to influence the emergence and scurry the arc, makes the downthehole flock of accomodating get rid of totally.

Preferably, the positive electrode structure is a hollow structure with a closed upper end and is positioned in the center of the arc cavity; the negative electrode structure is a hollow structure with the upper part in a tightened flow guiding shape and the lower part with the inner diameter larger than that of the positive electrode structure, and is positioned at the periphery of the positive electrode structure, and the space between the negative electrode structure and the positive electrode structure forms the arc cavity.

The high-pressure gas inlet of the air inlet mechanism is positioned in the hollow structure of the positive electrode structure, and the high-pressure gas returns to the bottom after reaching the top of the positive electrode structure and enters the arc cavity. After the power is switched on, a large amount of electric arcs are generated in the arc cavity, the electric arcs are blown out after being guided and concentrated from the arc cavity by high-pressure gas, stable conical electric arcs are formed, when the paper tape passes through the upper part of the electric arcs, the conical electric arcs can stably penetrate through the containing holes of the paper tape to burn out the burrs, the electric arcs are blown out along with the guiding trend of the arc cavity after the high-pressure gas is concentrated through the hollow structure of the positive electrode structure, the stability of the high-pressure gas is good at the moment, the electric arcs are guaranteed to be not easily influenced by external air, and the paper fiber burrs in the containing holes of the paper tape are removed cleanly without the problem of excessive burning out.

Preferably, the direction of the outlet of the arc in the arc chamber is perpendicular to the paper tape.

Preferably, the arc cavity is provided with a nozzle for spraying electric arcs, the electric arcs are concentrated and sprayed to the bottom surface of the paper tape, and the caliber of the nozzle is 2.3-2.8 mm. If the caliber of the nozzle is less than 2.3mm, the electric arc cannot be completely sprayed, the action range of the electric arc in the accommodating hole is limited, and the electric arc cannot be completely burnt out; if the caliber of the nozzle is larger than 2.8mm, the burning area of the electric arc is too large, the problem of excessive burning-off is generated, and the hole pattern of the accommodating hole is poor.

Preferably, the height of the nozzle is 3 to 5 mm. If the height of the nozzle is less than 3mm, the electric arc concentration effect of the nozzle is poor, the electric arc is easily influenced by external air, the risk of arc channeling exists, and the front surface and the side surface of the paper tape are burnt, so that the appearance is poor; if the height of the nozzle is larger than 5mm, the effective temperature of the electric arc is too low, and the flock in the accommodating hole of the paper tape can not be removed completely.

Preferably, the distance between the nozzle and the bottom surface of the paper tape is 1-3 mm.

Preferably, the air inlet mechanism controls the air pressure of the air to be 0.028-0.032 Mpa. Under this scope's atmospheric pressure, spout the electric arc to the paper tape from the nozzle, be difficult for receiving outside air's influence, make the inside flock fibre of paper tape accommodating hole melt and blown away by high-pressure gas, prevent that the dust from piling up, influence the continuation operation.

Preferably, the relationship between the volume of the hollow cavity of the positive electrode structure and the volume of the arc cavity is 1: 8-1: 10. in the volume ratio range, the air flow in the hollow structure of the positive electrode structure enters the arc cavity to uniformly spray the electric arc to the paper tape at a proper speed in cooperation with the air pressure.

Preferably, a ceramic flow guide structure with a plurality of flow guide holes with the same inclination angle is additionally arranged between the high-pressure gas inlet and the arc cavity, and the flow guide holes are circumferentially distributed. High-pressure gas enters the arc cavity through the diversion hole structure, and the electric arc in the arc cavity is spiral, so that the electric arc can be prevented from continuously burning the local part in the negative electrode structure to cause damage, and the service life of the electrode structure is prolonged.

Preferably, a ceramic insulating member is provided along an inner wall at a lower end of the negative electrode structure to prevent backflow of the arc within the arc chamber.

Preferably, a cooling cover is sleeved outside the negative electrode structure, and a plurality of concentric through holes communicated with the cooling cover are simultaneously arranged at the lower ends of the ceramic insulating part and the negative electrode structure, so that part of high-pressure gas entering the arc cavity flows into the cooling cover through the through holes, the heat dissipation effect on the arc cavity is achieved, and the electrodes are prevented from being overheated.

Preferably, static electricityThe generating device utilizes 0-8 KV/m²The high frequency dc voltage generates a continuous static electricity.

Preferably, the static electricity generating apparatus is provided with power adjusting, start-up delaying, and power delaying functions. The power regulation means that the voltage is changed to achieve the purpose of regulating the temperature of the electric arc, so that the generated electric arc has high activity, relatively low temperature, good burning-out effect and small damage to the paper tape. The starting delay means that the starting of the static electricity generating device is delayed for 0.5-5s after the static electricity generating device is electrified, so that the arc burning-out delay function is realized; power delay refers to delaying the increase in arc temperature when arc burn-off begins. The synergistic effect of the two delay functions ensures that the paper tape is not burned by the instantaneous high temperature.

The invention also provides a paper tape, wherein the electric arc burning-off system is used for singeing in the preparation process, the corners of the accommodating holes are right angles, and the lengths of the flock of the accommodating holes from the edges of the holes to the center of the holes are all less than or equal to 0.01 mm.

By implementing the technical scheme, the invention has the following advantages:

1. the electric arc cavity with the function of electric arc diversion and concentration is adopted, electric arcs blown out by high-pressure gas are more stable, burrs in the containing holes are removed completely, the hole pattern is good, and arc channeling caused by the influence of the external environment is avoided, so that the appearance of the paper tape is poor.

2. According to the invention, through improving the caliber and height of the nozzle, incomplete singeing or excessive singeing is prevented, electric arcs are not easily influenced by external air, and the risk of arc channeling is overcome.

3. The invention can prevent the electric arc from continuously burning the local part in the negative electrode structure to cause damage by means of the ceramic diversion structure, and prolong the service life of the electrode structure.

4. The cooling cover is arranged, so that the heat dissipation effect on the arc cavity is achieved, and the electrode is prevented from being overheated.

5. The invention ensures that the paper tape is not burnt due to instantaneous high temperature through the synergistic effect of the starting delay and the power delay of the static electricity generating device.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, belong to the protection scope of the present invention.

Example 1:

the electric arc burning system, as shown in figure 1, is composed of a static electricity generating device 01, a positive electrode structure 20-1, a negative electrode structure 20-2, an electric arc cavity 20-3 formed between the two structures, and an air inlet mechanism 03 for providing high-pressure air.

Electrostatic generator 01: using 0-8 KV/m²The high frequency dc voltage generates a continuous static electricity. It has power regulation, start-up delay and power delay functions. The power regulation is to change the voltage to achieve the purpose of regulating the arc temperature, so that the generated arc has high activity, relatively low temperature, good burning-out effect and small damage to the paper tape 100. The starting delay means that the starting of the static electricity generating device 01 is delayed for 0.5-5s after being electrified, so that the arc burning-out delay function is realized; power delay refers to delaying the increase in arc temperature when arc burn-off begins. The two delay functions work synergistically to ensure that paper strap 100 does not burn due to the instantaneous high temperatures.

As shown in fig. 1, the positive electrode structure 20-1 is a hollow structure with a closed upper end and is located at the center of the arc chamber 20-3. The negative electrode structure 20-2 is a hollow structure with the upper part in a tightened and current-guiding shape and the lower part with the inner diameter larger than that of the positive electrode structure 20-1, and is positioned at the periphery of the positive electrode structure 20-1, and the space between the two forms the arc cavity 20-3.

The negative electrode structure 20-2 is a hollow cavity structure with a conical upper part and a cylindrical lower part. When the positive and negative electrode structures are connected to the electrostatic generator 01 through the wires, the arc chamber 20-3 is filled with a large number of arcs.

The upper part of the negative electrode structure 20-2 in a tightened and guided shape is provided with a nozzle 21, and the electric arc filled in the electric arc cavity 20-3 is guided and then intensively sprayed to the bottom surface of the paper tape 100. The diameter and height of the nozzle 21 can be adjusted according to the specification of the paper tape 100 receiving hole, and since the effective temperature of the arc is mainly concentrated at the outlet of the nozzle 21, the diameter of the nozzle 21 is preferably 2.3-2.8mm, and the height is preferably 3-5 mm. The nozzle 21 of this example had an aperture of 2.5mm and a height of 5 mm. The nozzle 21 may be provided as a part of the negative electrode structure 20-2 or may be a separate structure.

The air intake mechanism 03 comprises a high-pressure gas control device 30-1 and a high-pressure gas inlet 30-3 connected with the high-pressure gas control device through a conduit 30-2. The high pressure gas control device 30-1 provides gas source and controls the gas pressure to be 0.028-0.032 Mpa. Under the air pressure in the range, the electric arc is sprayed to the paper tape 100 from the nozzle 21, so that the influence of the outside air is not easy, the flock fibers in the accommodating hole of the paper tape 100 are melted and blown away by high-pressure gas, the dust accumulation is prevented, and the continuous operation is influenced.

A high-pressure gas inlet 30-3 of the air inlet mechanism 03 is positioned in the hollow structure of the positive electrode structure 20-1, and high-pressure gas returns to the bottom after reaching the top of the positive electrode structure 20-1 and enters the arc cavity 20-3. After being concentrated by the hollow structure of the positive electrode structure 20-1, the high-pressure gas blows the electric arc out of the nozzle 21 along with the flow guiding trend of the electric arc cavity 20-3, and the stability of the high-pressure gas is good at the moment, so that the electric arc is not easily influenced by external air.

When the power supply is switched on, a large amount of electric arcs are generated in the electric arc cavity 20-3, the electric arcs are guided and concentrated in the electric arc cavity 20-3 by high-pressure gas and then blown out from the nozzle 21 to form stable conical electric arcs, and the electric arcs are perpendicular to the paper tape 100. And by activating the delay and power delay functions, paper strap 100 does not burn due to the momentary high temperatures. When the paper tape 100 passes over the electric arc, the conical electric arc can stably pass through the accommodating hole of the paper tape 100 to burn off the flock, so that the paper fiber flock in the accommodating hole of the paper tape 100 can be completely removed without the problem of excessive burning off.

Example 2:

the difference from embodiment 1 is that, as shown in fig. 2, a ceramic insulating member 20-4 is provided along the inner wall at the lower end of the negative electrode structure 20-2 to prevent the arc from flowing back in the arc chamber 20-3. A cooling cover 20-5 is sleeved outside the negative electrode structure 20-2, and a plurality of concentric through holes are simultaneously arranged at the lower ends of the ceramic insulating part 20-4 and the negative electrode structure 20-2, so that part of high-pressure gas entering the arc cavity 20-3 flows into the cooling cover 20-5 through the through holes, the heat dissipation effect on the arc cavity 20-3 is achieved, and the electrodes are prevented from being overheated.

Example 3:

the difference from the embodiment 2 is that, as shown in fig. 3, a ceramic diversion structure 04 with a plurality of diversion holes having the same inclination angle is additionally arranged between a high-pressure gas inlet 30-3 and an arc cavity 20-3, the diversion holes are circumferentially distributed on the ceramic diversion structure 04, high-pressure gas enters the arc cavity 20-3 through the diversion hole structure, an arc in the arc cavity 20-3 is spiral, so that the damage caused by the partial continuous burning in the arc negative electrode structure 20-2 can be prevented, and the service life of the electrode structure is prolonged. In order to increase the stability of the arc, the junction between the upper part and the lower part of the negative electrode structure 20-2 is configured to increase the contact point with the positive electrode structure 20-1, and may be stepped, concave, etc. to reduce the generation of the arc in the upper part of the arc cavity 20-3.