Velvet flower spherical negative ion generation head, generator and preparation method of generation head

Abstract

The invention discloses a velvet flower ball type negative ion generating head, a generator and a preparation method of the generating head, and belongs to the technical field of negative ion generators, and the negative ion generating head comprises a velvet flower ball type pile head, a binding wire and a fixing plug; the binding wire binds and fixes the velvet flower ball-shaped pile to one end of the fixed plug; and the other end of the fixed plug is connected with a metal frame of the velvet flower ball type negative ion generator and is inserted into a preformed hole of the metal frame. The generator comprises a generating head, a metal frame and a negative high-voltage static power supply; the negative-high-voltage static power supply is electrically connected with the metal frame to provide negative-high-voltage static electricity, so that the generating head releases negative ions outwards. The metal frame is of a single-ring structure or a multi-ring structure; the single-ring structure comprises a single-ring external expansion type and a single-ring convergence type; the multi-ring structure comprises a plurality of single-ring structures which form a disc-shaped, barrel-shaped or flower-basket-shaped metal frame. The negative ion generator has the advantages of being high in negative ion release concentration, large in space coverage range and higher in flexibility, has multiple assembly modes, and is suitable for multiple application scenes or products.

Description

Technical Field

[0001] The invention belongs to the technical field of negative ion generators, and more specifically relates to a velvet ball-shaped negative ion generating head, a generator and a preparation method of the generating head. Background Art

[0002] Negative ion technology has been applied in the fields of air filtration, cabin purification, sterilization, etc. However, the current application scope of negative ion technology is limited by its low negative ion release and small negative ion coverage. Many researchers are committed to the optimization design of the negative ion generator head and the head arrangement of the negative ion generator, aiming to maximize the negative ion release concentration and expand its range of action. For example, carbon fiber is used to replace the traditional single-needle emission head as the negative ion release tip, and the negative ion release concentration is increased by increasing the number of release tips. The negative ion release range is expanded by changing the aggregation morphology of the negative ion release tip (such as multi-directional multi-needle plate, brush-type ion generator, twist type). However, these methods are still limited in improving the negative ion release concentration and coverage, and it is still difficult to meet the application requirements of large flux, large space, and high concentration, and there is an uneven concentration distribution. Therefore, facing high-demand application scenarios, how to develop a negative ion generator with high negative ion concentration, wide coverage, and higher flexibility has become a key issue that needs to be solved to promote the application of negative ion generators. Summary of the invention

[0003] In view of this, the present invention provides a velvet ball-shaped negative ion generating head, a generator and a method for preparing the generating head, which have the advantages of high negative ion release concentration, large spatial coverage range and higher flexibility, significantly improves the cost performance of industrial applications, has a variety of flexible assembly modes, is highly designable, and is suitable for a variety of application scenarios or products.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A velvet ball type negative ion generating head comprises a velvet ball type pile, a tying wire and a fixed plug; the velvet ball type pile serves as a velvet ball type negative ion generating tip and is used to release negative ions outward; the tying wire is used to tie and fix the velvet ball type pile to one end of the fixed plug; the other end of the fixed plug is connected to a metal frame of a velvet ball type negative ion generator and is inserted into a reserved hole of the metal frame to fix the generating head.

[0006] Furthermore, a fixing glue is provided between the velvet ball type pile and the binding wire, which is used to fix the velvet ball type pile to the binding wire to prevent the pile from falling off.

[0007] Furthermore, the velvet ball-shaped pile is made of conductive fiber, such as carbon fiber wire, carbon pre-oxidized wire, metal wire, conductive polymer wire or conductive coated wire; and the binding wire is made of metal wire.

[0008] Furthermore, the fixing glue is selected from single-component heat-curing epoxy conductive adhesive, two-component epoxy curing resin adhesive, single-component heat-curing inorganic conductive adhesive, single-component room temperature curing conductive carbon adhesive or conductive acrylate adhesive.

[0009] Furthermore, the connection between the fixed plug and one end of the metal frame is a cylindrical ferrule type, a hexagonal ferrule type, a threaded type or a snap-on type.

[0010] The preparation method of the above-mentioned velvet ball-shaped negative ion generating head specifically comprises the following steps:

[0011] Yarn winding: The conductive fiber untwisted and unsizing tow yarn is unwound from the yarn tube and introduced into the yarn collector to form a certain amount of stored yarn to balance the yarn tension; the yarn passes through the yarn guide hole and is clamped by a pair of movable rollers; the rollers transport the yarn back and forth on the set track to the winding frame; one end of the yarn is supported by the winding frame for a set number of turns. By adjusting the size of the winding frame and the number of winding turns, the length and amount of the pompom can be adjusted. The horizontal width of the frame is 2 to 10 cm;

[0012] Tie knot: insert the pre-bent U-shaped binding wire perpendicular to the plane of the yarn winding frame into the middle of the wound yarn bundle and clamp it on both sides of the yarn bundle. The bottom of the U-shaped binding wire will encircle the yarn bundle, and the two ends of the binding wire at the other end will be clamped by the twister and twisted to achieve the bundling of the yarn bundle, so that the wound fiber bundle forms an hourglass-shaped structure with a narrow middle and wide ends.

[0013] Fixing: Use the glue dispensing head of the glue dispensing machine to apply the fixed glue to the bundling point of the yarn bundle, and quickly solidify it after the yarn is broken and rolled;

[0014] Yarn breaking: A pair of laser cutting heads are used to cut the bundled yarns at the set position; the cutting position is inside the yarn winding frame; the cutting position determines the length of the pile; the remaining yarn on both sides automatically falls off and is collected; the yarn winding frame is emptied;

[0015] Rolling pile: The bundled pile is moved to the rolling pile area, and the pile is broken into pile balls by multiple pairs of multi-directional rotating brushes. The spacing of the brush pairs is set according to the length of the pile.

[0016] Welding: After cutting the tying wire to a set length, weld it at the axial center of one end of the fixed plug.

[0017] The above-mentioned velvet ball type negative ion generating head is a velvet ball type negative ion generator with a generating tip, comprising a generating head, a metal frame and a negative high-voltage static power source; a plurality of generating heads are arranged along the circumference of the metal frame; and the metal frame is electrically connected to the negative high-voltage static power source.

[0018] Furthermore, the metal frame is coated with an insulating layer and is configured as a single-ring structure or a multi-ring structure.

[0019] Furthermore, the single-ring structure includes a single-ring outward-expanding type and a single-ring converging type; the single-ring outward-expanding type is a metal frame with a plurality of reserved holes evenly arranged around the outer edge thereof, on which a plurality of generating heads are installed and connected; the single-ring converging type is a metal frame with a plurality of reserved holes evenly arranged around the inner edge thereof, on which a plurality of generating heads are installed and connected.

[0020] Furthermore, the multi-ring structure includes multiple single-ring structures, and two adjacent single-ring structures are connected by metal brackets to form a disc-shaped, cylindrical or basket-shaped metal frame; each single-ring structure in the multi-ring structure adopts a single-ring outward expansion type, a single-ring convergence type or a single-ring outward expansion type and a single-ring convergence type staggered arrangement.

[0021] The beneficial effects of the present invention are:

[0022] The 3D spatially uniformly dispersed pompom-shaped negative ion generator disclosed in the present invention has the advantages of high concentration of released negative ions and wide coverage area, and improves the flexibility of the device. The number of inserted generating heads can be adjusted as needed, and a fixed plug is arranged at the bottom of the generating head formed by the conductive fiber bundle, which makes it easy to disassemble and flexible to use. The distribution of the transmitting head end is more uniform, and the mutual interference between the heads is effectively reduced through the interval arrangement strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic structural diagram of the velvet ball-shaped negative ion generating head of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the single-ring outward-expanding velvet ball negative ion generator of the present invention.

[0026] Figure 3 It is a schematic structural diagram of the single-ring convergent velvet ball negative ion generator of the present invention.

[0027] Figure 4It is a structural schematic diagram of the flower basket-shaped multi-ring velvet flower ball negative ion generator of the present invention.

[0028] Figure 5 The invention relates to production equipment for the velvet ball-shaped negative ion generating head.

[0029] Among them, in the figure:

[0030] 1-Generator; 1.1 Velvet ball-shaped pile; 1.2-Bundling wire; 1.3-Fixed plug; 1.4-Fixed glue; 2-Metal frame; 3-Negative high-voltage static power source. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Please refer to the attached Figure 1-5 The present invention provides a velvet ball type negative ion generator head, comprising a velvet ball type pile head 1.1, a binding wire 1.2 and a fixed plug 1.3; the velvet ball type pile head 1.1 is used as a velvet ball type negative ion generator tip for releasing negative ions outward; the binding wire 1.2 is used to bind and fix the velvet ball type pile head 1.1 to one end of the fixed plug 1.3; the other end of the fixed plug 1.3 is connected to the metal frame 2 of the velvet ball type negative ion generator, and is inserted into the reserved hole of the metal frame 2 to fix the generator head 1. A fixing glue 1.4 is also provided between the velvet ball type pile head 1.1 and the binding wire 1.2, which is used to fix the velvet ball type pile head 1.1 to the binding wire 1.2 to prevent the velvet from falling off.

[0033] The velvet ball type pile 1.1 is made of conductive fiber, such as carbon fiber wire, carbon pre-oxidized wire, metal wire (such as stainless steel wire, copper or copper alloy wire, etc.), conductive polymer wire or conductive coating wire, etc.

[0034] The tying wire 1.2 is made of metal wire (such as stainless steel wire, copper or copper alloy wire, aluminum alloy wire, etc.).

[0035] The fixing glue 1.4 is selected from single-component heat-curing epoxy conductive adhesive, two-component epoxy resin adhesive, single-component heat-curing inorganic conductive adhesive, single-component room temperature curing conductive carbon adhesive or conductive acrylate adhesive. The viscosity of the first four types of conductive adhesives is controlled at 5000-12000cps (5rpm), and the viscosity of the conductive acrylate adhesive is controlled between 1000-50000mPa·s. Among them, the epoxy resin adhesive can be a UV-curable type, such as a two-component UV-curing acid epoxy resin adhesive and the conductive adhesive NCA130 of Norland, USA.

[0036] The connection between the fixed plug 1.3 and the metal frame 2 at one end is cylindrical sleeve type, hexagonal sleeve type, threaded type or snap-on type.

[0037] The present invention also provides a velvet ball type negative ion generator using the above-mentioned velvet ball type negative ion generating head as a generating tip, comprising a generating head 1, a metal frame 2 and a negative high-voltage static electricity source 3; the generating heads 1 are arranged in a plurality along the circumference of the metal frame 2; the metal frame 2 is electrically connected to the negative high-voltage static electricity source 3 to provide the metal frame 2 with 2-50kV negative high-voltage static electricity.

[0038] The metal frame 2 is coated with an insulating layer and is configured as a single-ring structure or a multi-ring structure; the single-ring structure is applied to small pipes, cavities or components, including a single-ring outward expansion type and a single-ring convergence type; a plurality of reserved holes are evenly arranged around the outer edge of the metal frame 2, and a plurality of generating heads 1 are installed and connected to form a single-ring outward expansion type velvet ball negative ion generator; a plurality of reserved holes are evenly arranged around the inner edge of the metal frame 2, and a plurality of generating heads 1 are installed and connected to form a single-ring convergence type velvet ball negative ion generator. The number of generating heads 1 installed can be set according to demand, and can be set to 1-20. The generating heads can be replaced individually as needed.

[0039] like Figure 2 The single-ring outward expansion type velvet ball negative ion generator shown can be installed on the central motor of the swing-head fan. When scattering negative ions around, the wind can be used to diffuse the negative ions to a farther distance, achieving a wider range of air purification. When used, 5-20 generating heads 1 can be configured on each ring, and the diameter of the ring is between 30-50cm. As the diameter of the ring increases, the number of generating heads 1 installed should also increase accordingly. The voltage range is -5 to -15kv.

[0040] like Figure 3The single-ring convergent velvet ball negative ion generator shown can be applied to pipes, cavities, or the inner ring of a multi-ring. In this application scenario, the diameter of the ring used is very wide. In the household scenario, the diameter of the ring is specified to be between 5-15cm, and the number of heads to be installed is 1-5; in the industrial scenario, the diameter of the ring is 20-200cm, and the number of heads to be installed is 5-20. The voltage range is -2 to -40kv.

[0041] The multi-ring structure is applied to pipes and cavities with high negative ion concentration requirements or large spaces, such as long pipes, tunnels, large cavities, etc., to form an industrial negative ion generator, which can greatly improve the negative ion release concentration and negative ion coverage, thereby improving work efficiency. The multi-ring structure includes multiple single-ring structures, which can be set to be composed of more than two rings or parallel rings; the two adjacent single-ring structures are connected by a metal bracket to form a disc-shaped, cylindrical or basket-shaped metal frame 2. Each single-ring structure in the multi-ring structure adopts a single-ring outward expansion type, a single-ring convergence type, or a single-ring outward expansion type and a single-ring convergence type staggered arrangement. The two adjacent single-ring structures are staggered inside and outside to connect the generating head 1, and the size of the metal frame 2 in the single-ring structure can be set as needed to form a structure such as Figure 4 The 3D space-uniformly dispersed flower basket-shaped multi-ring velvet ball negative ion generator shown in the figure has a diameter of 20-200 cm for each ring, and the total number of negative ion generating heads assembled is between 5 and 20, and it is best to distribute them evenly on each ring. The voltage range is -10 to -50 kV. The multi-ring structure can be connected to multiple high-voltage static power sources 3 as needed.

[0042] The invention also provides a production device for a velvet ball-shaped negative ion generating head, comprising: a yarn frame, a yarn collecting system, a velvet forming system, a welding system, a velvet beating system and a conveying system.

[0043] The yarn rack includes an arc-shaped frame body and a plurality of pay-off brackets and a plurality of tension yarn guides arranged on the arc-shaped frame body; the tension yarn guide is located at the rear of the pay-off bracket; the arc-shaped frame body includes a column and an arc-shaped cross frame arranged on the column; the pay-off bracket includes a pay-off sleeve and a barrel insertion rod; the tension yarn guide includes a guide plate, a ceramic tensioner, a universal joint rod and two ceramic yarn guide heads; the universal joint rod is connected to the bottom of the guide plate and can rotate to fix the direction of the guide plate; the ceramic tensioner is located at the center of the guide plate and is used to apply a certain tension to the yarn; the two ceramic yarn guide heads are respectively arranged at the front and rear ends of the guide plate; the pulp-free carbon fiber yarn tube is placed on the barrel insertion rod of the pay-off bracket, and the yarn is led out from the pulp-free carbon fiber yarn tube through the pay-off sleeve, and passes through the ceramic yarn guide head at the rear end, the ceramic tensioner, and the ceramic yarn guide head at the front end in turn to be delivered to the yarn gathering system; the direction of the tension yarn guide on the yarn rack is along the arc of the arc-shaped cross frame to the yarn gathering system at the center of the circle.

[0044] The yarn gathering system includes a yarn gathering triangle, a tension roller and a pair of yarn gathering rollers; the yarn gathering triangle includes a ceramic yarn guide head array and a yarn gathering disk, and the yarn withdrawn from the yarn frame is bundled or pieced into a yarn bundle or yarn sheet with regular orientation through the ceramic yarn guide head array and the yarn gathering disk; the yarn bundle or yarn sheet passes through multiple groups of tension rollers to adjust the yarn tension and optimize the orientation, and finally is transmitted to the pile forming system from the pair of yarn gathering rollers.

[0045] The fluffing system comprises a pair of movable yarn-taking rollers, a yarn winding head, a pair of mechanical arm groups, a tying wire storage and feeding system, a glue dispensing system, and a laser cutting system; the pair of movable yarn-taking rollers is located above the yarn winding head; the pair of movable yarn-taking rollers comprises a pair of yarn-taking rollers, a roller pair movable track, and a limit roller; the yarn winding head comprises a yarn winding frame with a rubber roller, an electromagnetic telescopic clamp, and a yarn winding shaft; a pair of mechanical arm groups comprises an upper mechanical arm and a lower mechanical arm; the upper mechanical arm and the lower mechanical arm are distributed on the upper and lower sides of the yarn winding head; the tying wire storage and feeding system comprises a tying wire storage drum and a pair of wire feeding rollers; the glue dispensing system comprises a glue storage barrel, a conduit, a glue dispensing head, and a UV curing head; the laser cutting system comprises a cutting head, a pair of laser cutting heads are used to cut the fibers on the yarn winding frame, and a first cutting head is used to cut the tying wire;

[0046] The movable yarn taking roller pair clamps the output yarn bundle or yarn sheet from the yarn collecting roller pair position, pulls it to the winding head in the vertical position, and is clamped by the electromagnetic telescopic clamp of the winding head; the winding frame rotates under the drive of the winding shaft, and with the rotation of the winding frame, the yarn bundle or yarn sheet is quantitatively and evenly wound on the surface of the winding frame; the upper mechanical arm clamps the binding wire from the binding wire storage and feeding system, passes through the gap between the winding yarn bundle on the winding frame and one side of the winding frame, the lower mechanical arm clamps the binding wire after passing through, and the upper mechanical arm releases the binding wire and returns to the initial position, and then, The lower robotic arm clamps the binding wire that has passed through and passes it under the winding yarn bundle on the winding frame, and passes it out from the gap between the winding yarn bundle on the winding frame and the other side of the winding frame. Then, the upper robotic arm clamps the binding wire that has passed through, the lower robotic arm loosens the binding wire and returns to the initial position, the upper robotic arm tightens the binding wire to form a U-shaped structure, and the binding wire and the winding yarn bundle form a cross binding structure. The lower robotic arm clamps the midpoint of the U-shaped binding wire and rotates it. The binding wire is fixed on the winding yarn bundle to complete the binding process. After the first stage of twisting, the binding wire is fixed on the winding yarn bundle to complete the binding process. The fixed glue is applied to the yarn bundling point through the glue dispensing head, and the yarn and the bundling wire are initially combined. A pair of laser cutting heads cut the yarn from the inside of the winding frame and the two sides of the yarn winding. The edge yarn falls into the waste yarn basket at the bottom of the winding frame, and then the lower robot arm rotates again to complete the second stage of yarn twisting. Under the action of rotation, the yarn forms a dispersed and evenly distributed velvet flower in a plane perpendicular to the axis of the bundling wire. The UV curing head is driven up to a position close to the bundling point by the lifting mechanism to cure the fixed glue. After curing for a certain period of time, the UV curing head is driven back to the initial position by the lifting mechanism. starting position; if a velvet flower type negative ion generating head in the form of a unidirectional bundling wire is produced, and the bundling wire is located on one side of the pile, the bundling wire will be cut off by the laser cutting head after the yarn is threaded, and the two ends of the bundling wire will be clamped by the upper robotic arm, and the midpoint of the bundling wire will be clamped by the lower robotic arm to complete the pile formation; if a velvet flower type negative ion generating head in the form of a bidirectional bundling wire is produced, and the bundling wire is located on both sides of the pile, then after twisting in the second stage, two laser cutting heads will cut the twisted bundling wire into a set length; the formed velvet flower type negative ion generating head is sent to the welding system by the upper robotic arm and / or the lower robotic arm.

[0047] The welding system comprises a vibration plate, a vibration track, a fixed plug placement mechanical arm, two pile brackets, two laser welding heads and two sets of fixed plug conveyor belts; the fixed plugs are contained in the vibration plate, the vibration track is installed on the vibration plate, the fixed plugs are moved out of the vibration plate and arranged in a row on the vibration track by the shaking of the vibration plate and the vibration track, the fixed plug placement mechanical arm clamps the arranged fixed plugs on the vibration track and inserts them into the holes in the two sets of fixed plug conveyor belts and places them upright, and a slot for the bundling wire to pass through is provided on one side of the hole; the two sets of fixed plug conveyor belts are arranged up and down and move synchronously; the two pile brackets The rack is arranged up and down and is located between two sets of fixed plug conveyor belts; the two laser welding heads are arranged up and down and are located on one side of the two sets of fixed plug conveyor belts respectively; the fluffing system is located between the two pile head brackets; the two pile head brackets are used to clamp the velvet flower type negative ion generating head conveyed by the fluffing system; when the fixed plug is conveyed to be opposite to the end of the velvet flower type negative ion generating head, the laser welding head welds the end of the bundling wire to the center position of the end of the fixed plug, and the fluffing system performs fluffing treatment; the velvet flower type negative ion generating head after welding and fluffing is transported to the conveying system at the tail end as the fixed plug conveyor belt rotates.

[0048] The beating system is provided with two groups, which are distributed on both sides of the clamping center of the pile bracket, and the beating system includes a brush head and a brush shaft; the brush head is detachably arranged on the brush shaft; the size, texture, quantity and rotation direction of the brush head can be adjusted and set; after welding and fixing the plug, the velvet flower-shaped negative ion generating head clamped by the pile bracket is combed and scattered by the rotating brush head, and the unfixed pile is also combed out by the brush head at the same time.

[0049] The conveying system includes a generator head arranging mechanical arm and a generator head conveyor belt; the generator head arranging mechanical arm is used to remove the welded and velvet-type negative ion generator heads from the fixed plug conveyor belt and place them on the generator head conveyor belt, and send them to the next process for packing or assembly; when taking out, the generator head arranging mechanical arm clamps the binding wire of the velvet flower type negative ion generator head, drives the binding wire to move upward a certain distance, so that the fixed plug is disengaged from the hole of the fixed plug conveyor belt, and then moves horizontally to move the binding wire of the velvet flower type negative ion generator head out from the slot on one side of the hole, and then places the velvet flower type negative ion generator head on the generator head conveyor belt.

[0050] The method for preparing the velvet ball-shaped negative ion generating head provided by the present invention specifically comprises the following steps:

[0051] Yarn winding: The conductive fiber untwisted and unsizing tow yarn is unwound from the yarn tube and introduced into the yarn collector to form a certain amount of stored yarn to balance the yarn tension; the yarn passes through the yarn guide hole and is clamped by a pair of movable rollers. The rollers transport the yarn back and forth on the set track to the winding frame (square or rectangular frame); one end of the yarn is supported by the winding frame for a set number of turns. By adjusting the size of the winding frame and the number of winding turns, the length and amount of the pompom can be adjusted. The horizontal width of the frame is 2 to 10 cm.

[0052] Tying: The pre-bent U-shaped binding wire is inserted perpendicular to the plane of the yarn winding frame into the middle of the wound yarn bundle and clamped on both sides of the yarn bundle. The bottom of the U-shaped binding wire loops the yarn bundle, and the two ends of the binding wire at the other end are clamped by the twister and twisted to achieve the bundling of the yarn bundle, so that the wound fiber bundle forms an hourglass-shaped structure that is narrow in the middle and wide at both ends.

[0053] Fixing: Use the dispensing head of the dispensing machine to fix the glue dots at the bundling points of the yarn bundles, and quickly cure (heat or UV) after the yarn is broken and rolled.

[0054] Yarn breaking: A pair of laser cutting heads are used to cut the bundled yarns at the set position; the cutting position is inside the yarn winding frame; the cutting position determines the length of the pile; the remaining yarn on both sides automatically falls off and is collected; the yarn winding frame is cleared.

[0055] Rolling pile: The bundled pile is moved to the rolling pile area, and the pile is broken into pile balls by multiple pairs of multi-directional rotating brushes. The spacing of the brush pairs is set according to the length of the pile.

[0056] Welding: After cutting the tying wire to a set length, weld it at the axial center of one end of the fixed plug.

[0057] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0058] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A velvet ball type negative ion generating head, characterized in that: The invention comprises a velvet ball-shaped pile head (1.1), a tying wire (1.2) and a fixed plug (1.3); the velvet ball-shaped pile head (1.1) serves as a velvet ball-shaped negative ion generating tip and is used to release negative ions outward; the tying wire (1.2) is used to tie and fix the velvet ball-shaped pile head (1.1) to one end of the fixed plug (1.3); the other end of the fixed plug (1.3) is connected to a metal frame (2) of the velvet ball-shaped negative ion generator and is inserted into a reserved hole of the metal frame (2) to fix the generating head (1).

2. The velvet ball-shaped negative ion generating head according to claim 1, characterized in that: A fixing glue (1.4) is also provided between the velvet ball-shaped pile (1.1) and the binding wire (1.2) for fixing the velvet ball-shaped pile (1.1) to the binding wire (1.2) to prevent the pile from falling off.

3. The velvet ball-shaped negative ion generating head according to claim 1, characterized in that: The velvet ball-shaped pile (1.1) is made of conductive fiber, such as carbon fiber wire, carbon pre-oxidized wire, metal wire, conductive polymer wire or conductive coating wire; the binding wire (1.2) is made of metal wire.

4. The velvet ball-shaped negative ion generating head according to claim 2, characterized in that: The fixing glue (1.4) is selected from single-component heat-curing epoxy conductive adhesive, two-component epoxy curing resin adhesive, single-component heat-curing inorganic conductive adhesive, single-component room temperature curing conductive carbon adhesive or conductive acrylate adhesive.

5. The velvet ball-shaped negative ion generating head according to claim 1, characterized in that: The connection between the fixed plug (1.3) and one end of the metal frame (2) is of cylindrical sleeve type, hexagonal sleeve type, threaded type or snap-on type.

6. The method for preparing the velvet ball-shaped negative ion generating head according to any one of claims 1 to 5, characterized in that: The specific steps include: Yarn winding: The conductive fiber untwisted and unsizing tow yarn is unwound from the yarn tube and introduced into the yarn collector to form a certain amount of stored yarn to balance the yarn tension; the yarn passes through the yarn guide hole and is clamped by a pair of movable rollers; the rollers transport the yarn back and forth on the set track to the winding frame; one end of the yarn is supported by the winding frame for a set number of turns. By adjusting the size of the winding frame and the number of winding turns, the length and amount of the pompom can be adjusted. The horizontal width of the frame is 2 to 10 cm; Tie knot: insert the pre-bent U-shaped binding wire perpendicular to the plane of the yarn winding frame into the middle of the wound yarn bundle and clamp it on both sides of the yarn bundle. The bottom of the U-shaped binding wire will encircle the yarn bundle, and the two ends of the binding wire at the other end will be clamped by the twister and twisted to achieve the bundling of the yarn bundle, so that the wound fiber bundle forms an hourglass-shaped structure with a narrow middle and wide ends. Fixing: Use the glue dispensing head of the glue dispensing machine to apply the fixed glue to the bundling point of the yarn bundle, and quickly solidify it after the yarn is broken and rolled; Yarn breaking: A pair of laser cutting heads are used to cut the bundled yarns at the set position; the cutting position is inside the yarn winding frame; the cutting position determines the length of the pile; the remaining yarn on both sides automatically falls off and is collected; the yarn winding frame is emptied; Rolling pile: The bundled pile is moved to the rolling pile area, and the pile is broken into pile balls by multiple pairs of multi-directional rotating brushes. The spacing of the brush pairs is set according to the length of the pile. Welding: After cutting the tying wire to a set length, weld it at the axial center of one end of the fixed plug.

7. A velvet ball type negative ion generator with a velvet ball type negative ion generating head as a generating tip according to any one of claims 1 to 5, characterized in that: It comprises a generator head (1), a metal frame (2) and a negative high-voltage static power source (3); a plurality of the generator heads (1) are arranged along the circumference of the metal frame (2); and the metal frame (2) is electrically connected to the negative high-voltage static power source (3).

8. The velvet ball type negative ion generator with the velvet ball type negative ion generating head as the generating tip according to claim 7 is characterized in that: The metal frame (2) is coated with an insulating layer and is arranged as a single-ring structure or a multi-ring structure.

9. The velvet ball type negative ion generator with the velvet ball type negative ion generating head as the generating tip according to claim 8, characterized in that: The single-ring structure includes a single-ring outward expansion type and a single-ring convergence type; the single-ring outward expansion type is a metal frame (2) with a plurality of reserved holes evenly arranged in the circumference of the outer edge, and a plurality of generating heads (1) are installed and connected; the single-ring convergence type is a metal frame (2) with a plurality of reserved holes evenly arranged in the circumference of the inner edge, and a plurality of generating heads (1) are installed and connected.

10. The velvet ball type negative ion generator with the velvet ball type negative ion generating head as the generating tip according to claim 9 is characterized in that: The multi-ring structure includes a plurality of single-ring structures, which are arranged to be composed of more than two rings or parallel rings; two adjacent single-ring structures are connected by a metal bracket to form a disc-shaped, cylindrical or flower basket-shaped metal frame (2); each single-ring structure in the multi-ring structure adopts a single-ring outward expansion type, a single-ring convergence type or a single-ring outward expansion type and a single-ring convergence type staggered arrangement.

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