Corona ring applied to elbow spray gun
By designing a corona ring suitable for elbow spray guns and utilizing the structure of a retractable cable and connectors, the problem of existing corona rings being unable to adapt to elbow spray guns was solved, achieving rotational adaptation of elbow spray guns and conductor stability, and reducing equipment costs.
Patent Information
- Application Number
- CN202422931106.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing corona rings are not compatible with elbow spray guns, requiring a unique corona ring for each elbow spray gun, which increases the cost of equipment use.
A corona ring comprising a ring body, connectors, and fasteners was designed. Through the design of the retractable cable and connectors, the corona ring can be adapted to bendable spray guns and allows the nozzle to rotate during spraying, avoiding excessive pulling of the wires.
The corona ring was made compatible with curved spray guns, meeting the requirements of nozzle rotation, avoiding the problem of wire pulling caused by rotation, and reducing equipment costs.
Smart Images
Figure CN223698084U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the electrostatic spraying field especially relates to a corona ring for elbow spray gun. BACKGROUND
[0002] Electrostatic spraying refers to the principle of corona discharge to make atomized coating under the action of high-voltage direct current electric field with negative charge, and adsorbed on the positive charge base surface discharge coating method. Electrostatic spraying equipment is composed of spray gun, spray cup and electrostatic spraying high-voltage power supply. Electrostatic spraying is a kind of coating method which uses electrostatic field to make coating powder evenly.
[0003] For some peculiar shape of workpiece to be sprayed, when the voltage of the spray gun is high, the corona phenomenon will occur, which will cause the coating on the surface of the workpiece to be sprayed to wrinkle and other quality problems. In order to solve the problem of corona phenomenon and coating wrinkling of the spray gun, the existing solution is to set a corona ring outside the spray gun. The corona ring attracts the excess charge to the grounded ring body through the conductive needle.
[0004] However, the existing corona ring can only adapt to the spray gun with fixed angle of straight type spray head. For elbow spray gun, it cannot be used. Moreover, the elbow spray gun generally needs to be rotated at a certain angle. For the elbow spray gun with rotatable spray head angle, it is necessary to have a unique corona ring for each spray gun with different shapes and spray head angles, which increases the cost of equipment use. UTILITY MODEL CONTENTS
[0005] Therefore, it is necessary to provide a corona ring for elbow spray gun.
[0006] In order to solve the above technical problems, the utility model provides a corona ring for elbow spray gun, which comprises a ring body, a connecting piece and a fixing piece. The ring body is provided with a conductive needle. The first end of the conductive needle is located inside the ring body. The second end of the conductive needle passes through the ring body and is located outside the ring body. The connecting piece comprises a first connecting piece and a second connecting piece. The first end of the first connecting piece is connected with the ring body. The second end of the first connecting piece is connected with the first end of the second connecting piece. The second end of the second connecting piece is connected with the fixing block through an extendable cable. The extension direction of the first connecting piece is perpendicular to the plane where the annular surface of the ring body is located. The extension direction of the second connecting piece is perpendicular to the extension direction of the first connecting piece, so that the extension direction of the second connecting piece is parallel to the plane where the annular surface of the ring body is located.
[0007] Preferably, the first end of the first connecting piece is fixedly connected with the ring body, and the second end of the first connecting piece is rotatably connected with the first end of the second connecting piece.
[0008] Preferably, the first connecting piece and the second connecting piece are damped in rotation.
[0009] Preferably, the telescopic cable is a spiral cable, the first end of the telescopic cable is fixedly connected with the second connecting piece, the second end of the spiral cable away from the second connecting piece is provided with a plug, and a plug hole is arranged on the corresponding fixing piece, the plug is inserted into the plug hole in position, and the spiral cable is detachably connected with the fixing piece.
[0010] Preferably, the fixing piece comprises a first fixing piece fixed on the telescopic cable and a second fixing piece for fixing on the elbow spray gun, and the first fixing piece and the second fixing piece are detachably connected.
[0011] Preferably, the annular body comprises a first annular body and a second annular body matched with each other, the first annular body and the second annular body are sleeved, a conductive piece is clamped between the first annular body and the second annular body, the first annular body is provided with a through hole, a conductive pin is inserted into the through hole, the first end of the conductive pin is electrically connected with the conductive piece in the annular body, the second end of the conductive pin is located outside the first annular body through the through hole, and the first annular body and the second annular body are fixed into an integrated whole by a fastener.
[0012] Preferably, the top surface of the first annular body is provided with an annular protruding strip, the bottom surface of the second annular body is provided with an annular recess in position, the protruding strip is embedded in the recess in position, the first annular body and the second annular body are sleeved, the bottom of the recess is provided with a containing cavity, and the conductive piece is installed in the containing cavity.
[0013] Preferably, notches are arranged on the first annular body and the second annular body at positions connected with the first connecting piece, a limiting rod is arranged on the second annular body at the notch, metal rods are arranged in the interiors of the first connecting piece and the second connecting piece and are in conduction, a conductive spring is sleeved on the limiting rod, the other end of the spring abuts against the metal rod in the first connecting piece and is in conduction, and the metal rod in the second connecting piece is in conduction by being connected with the telescopic cable and the fixing block in sequence, so that the conductive pin is grounded.
[0014] The utility model discloses a beneficial effect: the application is through setting up the extension direction of first connecting piece with the plane of annular surface of annular body is perpendicular, the extension direction of second connecting piece with the extension direction of first connecting piece is perpendicular, makes the corona ring can be adapted to the elbow spray gun of right angle, in addition, through using telescopic cable line conduction connection fixing piece and annular body, makes the electrically conductive needle on annular body can meet the requirement of earthing, and also meet the demand of the spray head of elbow spray gun to rotate a certain angle, makes the spray head of elbow spray gun also can rotate and spray in the spraying process after using corona ring, will not cause the problem of the spray head rotation angle change to exceed the limit and pull the earthing wire. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present application are shown by way of illustrative example. Like reference numerals in the figures refer to same elements and like signs or line styles convey similar characteristics in all figures, and the drawings are not necessarily to scale (with emphasis on the principles of the present application). It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
[0016] Figure 1 It is a three-dimensional schematic view of the corona ring of the preferred embodiment of the utility model;
[0017] Figure 2 It is a three-dimensional schematic view of the corona ring of the preferred embodiment of the utility model from another half visual angle;
[0018] Figure 3 It is the schematic view of the corona ring of the preferred embodiment of the utility model installed on the right angle elbow spray gun;
[0019] Figure 4 It is the internal structure schematic view of annular body and connecting piece of the preferred embodiment of the utility model;
[0020] Figure 5 It is the exploded view schematic view of annular body of the preferred embodiment of the utility model;
[0021] In the drawing: annular body 1;First annular body 11;Convex strip 110;Second annular body 12;Groove 120;Connecting piece 2;First connecting piece 21;Second connecting piece 22;Fixing piece 3;Conductive part 100;Electrically conductive needle 4;Telescopic cable line 5;Plug connector 50;Notch 6;Limiting rod 7;Spring 8;Elbow spray gun 10. DETAILED DESCRIPTION
[0022] In order to facilitate understanding the utility model, below will refer to relevant drawings and carry out more comprehensive description to the utility model.
[0023] It is to be understood that when a component is referred to as being "connected" to another component, it can be directly connected to the other component, or intervening components can be present. The terms "mounted", "one end", "the other end", and the like, as used herein, are intended to be illustrative only and are not intended to be limiting.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this technology belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the present technology. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0025] With reference to Figures 1-5 The utility model provides a kind of corona ring applied to elbow spray gun, including annular body 1, connecting piece 2 and fixed piece, the electrically conductive needle 4 is provided on the annular body 1, the first end of the electrically conductive needle 4 is located inside the annular body 1, the second end of the electrically conductive needle 4 is located outside the annular body through the annular body 1, the connecting piece 2 includes first connecting piece 21 and second connecting piece 22, the first end of the first connecting piece 21 is connected with the annular body 1, the second end of the first connecting piece 21 is connected with the first end of the second connecting piece 22, the second end of the second connecting piece 22 is connected with the fixed block 3 by telescopic cable 5, the extension direction of the first connecting piece 21 is perpendicular to the plane where the annular surface of the annular body 1 is, the extension direction of the second connecting piece 22 is perpendicular to the extension direction of the first connecting piece 21, so that the extension direction of the second connecting piece 22 is parallel to the plane where the annular surface of the annular body 1 is. The extension direction of the first connecting piece 21 is perpendicular to the plane where the annular surface of the annular body 1 is, and the extension direction of the second connecting piece 22 is perpendicular to the extension direction of the first connecting piece 21 by being provided, so that corona ring can be adapted to elbow spray gun of right angle, in addition, by using telescopic cable 5 to connect fixed piece and annular body 1, so that the electrically conductive needle 4 on the annular body 1 can meet the requirement of grounding, and meet the demand of the spray head of elbow spray gun 10 to rotate left and right at a certain angle, so that the spray head of elbow spray gun can also rotate left and right during spraying after using corona ring, and the problem that the change of spray head rotation angle causes the grounding wire to be pulled beyond the limit is not caused.
[0026] With reference to Figure 1 And Figure 2 In preferred embodiments, the first end of the first connecting piece 21 is fixedly connected with the annular body 1, and the second end of the first connecting piece 21 is rotatably connected with the first end of the second connecting piece 22.
[0027] In the preferred embodiment, the first connecting member 21 and the second connecting member 22 are damped in rotation.
[0028] With reference to Figure 1 , Figure 2 and Figure 3 , in the preferred embodiment, the telescopic cable 5 is a spiral cable, the first end of the telescopic cable 5 is fixedly connected with the second connecting member 22, the second end of the spiral cable away from the second connecting member 22 is provided with a plug 50, and a corresponding plug hole is provided on the fixing member 3. The plug is inserted into the plug hole in a corresponding manner, so that the spiral cable and the fixing member are detachably connected.
[0029] In another preferred embodiment, the fixing member 3 includes a first fixing member fixed on the end of the telescopic cable 5 and a second fixing member for fixing on the elbow spray gun 10, and the first fixing member and the second fixing member are detachably connected. Specifically, the connecting structure of the first fixing member and the second fixing member can be easily disassembled by using a bolt, a buckle, a bayonet, etc. or can be connected by using a fastener, such as a screw fastener, a bolt fastener, etc.
[0030] With reference to Figure 4 and Figure 5 , in the preferred embodiment, the ring body 1 includes a first ring body 11 and a second ring body 12 matched with each other, the first ring body 11 and the second ring body 12 are sleeved, and a conductive member for grounding is clamped between the first ring body 11 and the second ring body 12. A through hole is provided on one side of the first ring body 11 away from the second ring body 12, and a conductive pin 4 is inserted into the through hole. The first end of the conductive pin 4 is located in the ring body and is electrically connected with the conductive member, and the second end of the conductive pin is located outside the first ring body 11 through the through hole. The first ring body 11 and the second ring body 12 are fixed into one body by a fastener.
[0031] With reference to Figure 4 and Figure 5 , in the preferred embodiment, the top surface of the first ring body 11 is provided with a ring-shaped protrusion 110, and the bottom surface of the second ring body 12 is provided with a ring-shaped groove 120. The protrusion 110 is embedded in the groove 120 in a corresponding manner, so that the first ring body 11 and the second ring body 12 are sleeved. The groove bottom of the groove 120 is provided with a receiving cavity, and the conductive member is installed in the receiving cavity.
[0032] With reference to Figure 4In the preferred embodiment, the first annular body 11 and the second annular body 12 are provided with a notch 6 at the position where the first connecting member 21 is connected, the second annular body 12 is provided with a limiting rod 7 at the notch 6, the first connecting member 21 and the second connecting member 22 are both provided with a metal rod inside, the limiting rod 7 is sleeved with a conductive spring 8, the other end of the spring 8 is in contact with the metal rod inside the first connecting member 21 for conduction, and the metal rod inside the second connecting member 22 is sequentially connected with the telescopic cable 5 and the fixed block 3 for conduction, so that the conductive needle 4 is connected with the ground.
[0033] The device of the present application comprises an annular body 1 for sleeving the head of the spray gun, a fixed member 3 for making the annular body eventually connected with the ground, and a connecting member 2 for connecting the annular body and the fixed member 3, the annular body 1, the first connecting member 21, the second connecting member 22 and the fixed member 3 are all provided with a conductive body, which includes a conductive member inside the annular body 1, a metal rod inside the first connecting member 21 and the second connecting member 22, etc., the conductive body is used to make the conductive needle 4 near the position of the spray gun nozzle sequentially connected with the ground, so that the electric charge absorbed by the conductive needle 4 is conducted into the ground.
[0034] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.
[0035] In the description of the present application, the description of the terms "preferred embodiment", "further embodiment", "other embodiment" or "specific example" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.
[0036] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that changes, modifications, substitutions and variations can be made by those skilled in the art without departing from the scope of the present application.
Claims
1. A corona ring for use in a curved spray gun, characterized in that, The device includes a ring-shaped body, a connector, and a fixing member. A conductive pin is disposed on the ring-shaped body, with a first end inside the ring-shaped body and a second end passing through the ring-shaped body and located outside the ring-shaped body. The connector includes a first connector and a second connector. The first end of the first connector is connected to the ring-shaped body, and the second end of the first connector is connected to the first end of the second connector. The second end of the second connector is connected to the fixing member via a retractable cable. The extension direction of the first connector is perpendicular to the plane containing the annular surface of the ring-shaped body, and the extension direction of the second connector is perpendicular to the extension direction of the first connector, such that the extension direction of the second connector is parallel to the plane containing the annular surface of the ring-shaped body.
2. The corona ring as described in claim 1, characterized in that, The first end of the first connector is fixedly connected to the annular body, and the second end of the first connector is rotatably connected to the first end of the second connector.
3. The corona ring as described in claim 1, characterized in that, The first connector and the second connector dampen rotation.
4. The corona ring as described in claim 2, characterized in that, The retractable cable is a spiral cable. The first end of the retractable cable is fixedly connected to the second connector. The second end of the spiral cable away from the second connector is provided with a plug-in. The corresponding fixing member is provided with a plug-in hole. The plug-in is inserted into the plug-in hole, so that the spiral cable and the fixing member are detachably connected.
5. The corona ring as described in claim 2, characterized in that, The retractable cable is a spiral cable, and the fixing component includes a first fixing component fixed to the retractable cable and a second fixing component for fixing to the elbow spray gun. The first fixing component and the second fixing component are detachably connected.
6. The corona ring as described in claim 1, characterized in that, The annular body includes a matching first annular body and a second annular body, which are nested together. A grounded conductive element is sandwiched between the first annular body and the second annular body. A through hole is provided on the first annular body, and a conductive needle is inserted into the through hole. The first end of the conductive needle is located inside the annular body and is electrically connected to the conductive element. The second end of the conductive needle passes through the through hole and is located outside the first annular body. The first annular body and the second annular body are fixed together by fasteners.
7. The corona ring as described in claim 6, characterized in that, The top surface of the first annular body is provided with an annular protrusion, and the bottom surface of the corresponding second annular body is provided with an annular groove. The protrusion is aligned and embedded in the groove, so that the first annular body and the second annular body are fitted together. The bottom of the groove is provided with a receiving cavity, and the conductive component is installed in the receiving cavity.
8. The corona ring as described in claim 6 or 7, characterized in that, The first and second annular bodies have notches at the positions where they connect to the first connector. A limit rod is provided on the second annular body at the notch. Both the first and second connectors have conductive metal rods inside. A conductive spring is sleeved on the limit rod. The other end of the spring abuts against the metal rod inside the first connector and conducts electricity. The metal rod inside the second connector conducts electricity sequentially through connection with the retractable cable and the fixing member, thereby grounding the conductive pin.