Coating device for resistor disc production

Abstract

The invention provides a coating device for resistor disc production. The coating device comprises a slurry supply mechanism, a lifting mechanism and a clamping mechanism. The slurry supply mechanism and the clamping mechanism are arranged on the two sides of the lifting mechanism respectively, a second driving device of the lifting mechanism drives a swing arm to reciprocate, and a third driving device drives a second roller to rotate. When the second roller is in contact with the first roller in contact with the slurry in the slurry supply mechanism, the slurry on the second roller can be supplemented; and when the second roller is in contact with the resistor disc clamped on the clamping mechanism, the slurry on the second roller can be coated to the side surface of the resistor disc. And meanwhile, the clamping mechanism is used for driving the resistor disc to rotate, uniform coating of the surface of the resistor disc is guaranteed, automatic production of resistor disc coating is achieved, and the requirement for convenience and high efficiency of coating in resistor disc production is met.

Description

Technical Field

[0001] The invention belongs to the technical field of resistor production, and in particular relates to a coating device for resistor production. Background Art

[0002] The application of resistors in lightning arresters is mainly reflected in their role as core components, which are responsible for conducting and guiding current into the ground in the event of overvoltage, thereby protecting electrical equipment from damage. In order to make the resistor have excellent characteristics such as high resistance, glass glaze can be coated on the surface of the resistor.

[0003] For example, zinc oxide resistors are electronic components made of zinc oxide as the main material. They play a key role in overvoltage protection of power systems due to their unique nonlinear volt-ampere characteristics. Under normal operating voltage, zinc oxide resistors exhibit high resistance characteristics, limiting the flow of current; while in overvoltage conditions, their resistance drops sharply, allowing large currents to pass through, thereby protecting the circuit from damage.

[0004] Glass glaze has significant advantages as the side insulation material of zinc oxide resistors. First, glass glaze is well bonded to the side of zinc oxide resistors, and the surface is smooth, not easy to absorb moisture and dust, thus improving the side voltage resistance performance. Secondly, the temperature resistance of glass glaze is much higher than that of inorganic high resistance layer, and its insulation is also high, so it can make zinc oxide resistors more able to withstand large current impacts. In addition, glass glaze also has good aging resistance, which can improve moisture resistance, arc resistance and corona resistance, thus expanding the scope of use of zinc oxide resistors.

[0005] Different resistor structures are used for different usage scenarios. There is currently no unified production standard for the production of glass glaze on different types of resistors, so the equipment used in the production of glass glaze on resistors is also non-standard equipment. In the prior art, in the process of glass glaze coating on resistors, manual loading and unloading is often used in conjunction with glaze rollers for production. However, manual production often involves greater risks. On the one hand, environmental factors are taken into consideration. The existing glass glaze slurry formulas contain organic solvents. Operators who are in this production environment for a long time are prone to inhaling toxic and harmful substances, which poses an occupational health hazard. On the other hand, during the glazing operation, the position of the zinc oxide resistor is uncontrollable, and there are problems with the thickness and uniformity of the glaze, resulting in unstable product quality and high production costs.

[0006] Therefore, how to ensure that the surface of the resistor is evenly coated during the automated production of the resistor coating is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0007] The object of the present invention is to provide a coating device for producing resistor strips, which can realize the automated production of coating on the surface of resistor strips and ensure uniform coating on the surface of resistor strips.

[0008] In order to solve the above technical problems, the present invention provides a coating device for producing resistor sheets, comprising:

[0009] The slurry supply mechanism comprises a slurry tank for containing slurry, a first driving device and a first roller, wherein the movable end of the first driving device is connected to the first roller and is used to drive the first roller to rotate, and the first roller can contact the slurry in the slurry tank;

[0010] The lifting mechanism comprises a second driving device, a swing arm, a third driving device and a second roller, wherein the second driving device is used to drive the swing arm to move, the swing arm is rotatably provided with the second roller, and the third driving device is used to drive the second roller to rotate;

[0011] A clamping mechanism, used to connect with the resistor sheet and drive the resistor sheet to rotate;

[0012] The second driving device can drive the swing arm to move back and forth, so that the second roller switches between the first roller and the resistor on the clamping mechanism, thereby realizing the replenishment and transportation of the slurry on the second roller.

[0013] Optionally, in the above-mentioned coating device for producing resistor sheets, the second driving device is a rotary power device, the movable end of the second driving device is connected to one end of the swing arm through a driving shaft, and the other end of the swing arm is rotatably provided with the second roller;

[0014] Alternatively, the second driving device is a linear module, and the movable end of the second driving device is connected to the swing arm.

[0015] Optionally, in the above-mentioned coating device for producing resistor sheets, the lifting mechanism further includes a scraper, one end of which is fixed on the swing arm and the other end of which is tangent to the second roller.

[0016] Optionally, the coating device for producing resistor sheets further includes a machine platform and a limit plate for limiting the moving range of the swing arm, and the limit plate is arranged on the machine platform.

[0017] Optionally, in the above-mentioned coating device for producing resistor sheets, a connecting plate corresponding one-to-one to the limiting plate is further provided on the swing arm, and the connecting plate is installed on the swing arm through a connecting column.

[0018] Optionally, in the above-mentioned coating device for producing resistor sheets, the slurry supply mechanism further comprises a mounting bracket, and the slurry tank is mounted on the mounting bracket;

[0019] And / or, the fixed end of the first driving device is arranged on the machine platform;

[0020] And / or, the fixed end of the second driving device is arranged on the machine platform;

[0021] And / or, the fixed end of the third driving device is arranged on the swing arm.

[0022] Optionally, in the above-mentioned coating device for producing resistor sheets, the clamping mechanism includes a third driving device and a connecting station, the third driving device is used to drive the connecting station to rotate, and the connecting station is used to connect the end surface of the resistor sheet.

[0023] Optionally, in the above-mentioned coating device for producing resistor sheets, the connecting station includes a suction cup.

[0024] Optionally, in the above-mentioned coating device for producing resistor sheets, the connecting station further comprises a fourth driving device and a pad, and the fourth driving device is used to drive the pad to press against an end surface of the resistor sheet away from the suction cup.

[0025] Optionally, in the above-mentioned coating device for producing resistor sheets, the radius of the first roller does not exceed 1 / 2 of the inner height of the slurry tank, and the first roller is not tangent to the bottom of the slurry tank.

[0026] The present invention provides a coating device for producing resistor sheets, which has the following beneficial effects:

[0027] The slurry supply mechanism and the clamping mechanism are respectively arranged on both sides of the lifting mechanism. The second driving device of the lifting mechanism drives the swing arm to move back and forth, and the third driving device drives the second roller to rotate. When the second roller contacts the first roller in the slurry supply mechanism that contacts the slurry, the slurry on the second roller can be replenished; when the second roller contacts the resistor clamped by the clamping mechanism, the slurry on the second roller can be coated on the side of the resistor. At the same time, the clamping mechanism is used to drive the resistor to rotate, ensuring that the surface of the resistor is evenly coated, realizing the automated production of resistor coating, and meeting the convenience and efficiency of coating in resistor production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1A schematic diagram of the structure of a coating device for producing resistor sheets provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of a slurry supply mechanism provided in an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the structure of a lifting mechanism provided by an embodiment of the present invention;

[0032] Figure 4 A schematic structural diagram of a clamping mechanism provided in an embodiment of the present invention.

[0033] In the above picture:

[0034] 101 - slurry tank; 102 - first driving device; 103 - first roller; 104 - mounting bracket;

[0035] 201-swing arm; 202-second roller; 203-connecting plate; 204-driving shaft; 205-scraper; 206-connecting column; 207-second driving device; 208-third driving device; 209-synchronous belt;

[0036] 301-machine; 302-limiting plate;

[0037] 401 - third driving device; 402 - suction cup; 403 - fourth driving device; 404 - pad; 405 - mounting plate. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The core of the present invention is to provide a coating device for resistor production, which can realize the automated production of resistor surface coating and ensure uniform coating on the resistor surface.

[0040] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Specifically, please refer to Figure 1-Figure 4 The present invention provides a coating device for producing resistor sheets, which includes a slurry supply mechanism, a lifting mechanism and a clamping mechanism.

[0042] The slurry supply mechanism includes a slurry tank 101 for containing slurry such as glass glaze, a first driving device 102 and a first roller 103. The movable end of the first driving device 102 is connected to the first roller 103 and is used to drive the first roller 103 to rotate. A portion of the first roller 103 is placed in the slurry tank 101 so that the first roller 103 can contact the glass glaze in the slurry tank 101. The first driving device 102 can be a stepping motor. The first driving device 102 can drive the first roller 103 to rotate continuously and steadily, and stably transport the glass glaze slurry to the first roller 103.

[0043] The lifting mechanism includes a second driving device 207, a swing arm 201, a third driving device 208 and a second roller 202. The second driving device 207 is used to drive the swing arm 201 to move. The second roller 202 can be rotatably provided on the swing arm 201 to dynamically adjust the paint height of the second roller 202. The third driving device 208 is used to drive the second roller 202 to rotate. The first roller 103 conveys the slurry to the second roller 202, and continuously stirs the slurry in the slurry tank 102 to prevent the glass glaze from settling for a long time. Specifically, the third driving device 208 can be a stepping motor. The output shaft of the third driving device 208 is connected to the second roller 202 through a synchronous belt 209 to drive the second roller 202 to rotate.

[0044] The clamping mechanism is used to connect with the resistor sheet and drive the resistor sheet to rotate, and the clamping position of the clamping mechanism is not at the position of the resistor sheet to be coated.

[0045] The second driving device 207 can drive the swing arm 201 to move back and forth, so that the second roller 202 switches between the first roller 103 and the resistor sheet on the clamping mechanism. When the second driving device 207 drives the swing arm 201 to move to the first position, the second roller 202 is just tangent to the side of the first roller 103, so that the slurry on the second roller 202 can be replenished; when the second driving device 207 drives the swing arm 201 to move to the second position, the second roller 202 is just tangent to the side of the resistor sheet on the clamping mechanism, so that the slurry on the second roller 202 can be transported.

[0046] At the same time, the second driving device 207 drives the swing arm 201 to move, so as to achieve the close contact and loosening operation of resistor sheets of different sizes when coating the slurry, and has good adaptability.

[0047] The present invention provides a coating device for producing resistors, wherein a slurry supply mechanism and a clamping mechanism are respectively arranged on both sides of a lifting mechanism, and a swing arm 201 is driven to move back and forth by a second driving device 207 of the lifting mechanism, and a third driving device 208 drives a second roller 202 to rotate. When the second roller 202 contacts the first roller 103 in the slurry supply mechanism that contacts the slurry, the slurry on the second roller 202 can be replenished; when the second roller 202 contacts the resistor clamped by the clamping mechanism, the slurry on the second roller 202 can be coated on the side of the resistor. At the same time, the clamping mechanism is used to drive the resistor to rotate, so as to ensure that the surface of the resistor is evenly coated, realize the automated production of resistor coating, and meet the convenience and efficiency of coating in resistor production.

[0048] In a specific embodiment, in one form, the second driving device 207 is a rotary power device, the movable end of the second driving device 207 is connected to one end of the swing arm 201 through the driving shaft 204, and the other end of the swing arm 201 is rotatably provided with a second roller 202. The second driving device 207 drives the swing arm 201 to make circular motion with the first direction as the axis to achieve the swing of the swing arm 201, so that the coating device can glaze the side of the resistor and replenish the glaze, and the purpose of consistent thickness and uniformity of the glaze in the resistor glazing can be effectively achieved during production.

[0049] In another form, the second driving device 207 is a linear module, and the movable end of the second driving device 207 is connected to the swing arm 201, which can drive the swing arm 201 to move linearly along the guide rail direction of the linear module.

[0050] In order to achieve uniform coating of the slurry, the lifting mechanism further includes a scraper 205, one end of which is fixed on the swing arm 201 and the other end is tangent to the second roller 202. Of course, one end of the scraper 205 can also be connected to the swing arm 201 through a cantilever or a bracket. The scraper 205 is tangent to the second roller 202 and filters the slurry particles on the second roller 202 to prevent the side of the resistor from having sharp points and protrusions that affect the electrical performance of the resistor.

[0051] The present solution further includes a machine platform 301 and a limit plate 302 for limiting the moving range of the swing arm 201, and the limit plate 302 is disposed on the machine platform 301. The number of the limit plates 210 can be one or more, and the limit plates 210 can limit the position of the swing arm 201 close to the resistor sheet, and can also limit the position of the swing arm 201 close to the first roller 103.

[0052] Correspondingly, in order to prevent the second roller 202 from colliding with the first roller 103 or the resistor before the swing arm 201 contacts the limit plate 210, a connecting plate 203 corresponding to the limit plate 302 is also provided on the swing arm 201, and the connecting plate 203 is installed on the swing arm 201 through a connecting column 206.

[0053] In a specific embodiment, the slurry supply mechanism further includes a mounting bracket 104 , and the slurry tank 101 is mounted on the mounting bracket 104 .

[0054] Based on the above specific embodiment, the clamping mechanism includes a third driving device 401 and a connecting station, wherein the movable end of the third driving device 401 is connected to the connecting station for driving the connecting station to rotate, and the connecting station is used to connect the end surface of the resistor sheet. The third driving device 401 can be a stepping motor.

[0055] The connection station includes a suction cup 402, the suction force of which firmly adsorbs the end face of the resistor, and the suction cup 402 can drive the resistor to rotate. The suction cup 402 can be a suction cup with adsorption force made of ordinary rubber material, or a vacuum suction cup using vacuum, or a magnetic suction cup, etc.

[0056] The connection station further includes a fourth driving device 403 and a pad 404 . The fourth driving device 403 is used to drive the pad 404 to press against the end surface of the resistor away from the suction cup 402 .

[0057] The fourth driving device 403 can be a linear module such as a downward pressure cylinder. The fourth driving device 403 drives the gasket 404 to squeeze one end face of the resistor, so that the other end face of the resistor fits tightly with the suction cup 402. The fourth driving device 403 can realize the clamping and loosening operations of the resistor on the connection station.

[0058] The fixed end of the fourth driving device 403 is mounted on the vertical plate of the machine platform 301 through the mounting plate 405. Figure 4 As shown, the mounting plate 405 is perpendicular to the vertical plate of the machine table 301, and a U-shaped connecting rod is connected to the output end of the fourth driving device 403. The U-shaped connecting rod enables the gasket 404 and the fourth driving device 403 to move synchronously, which can realize the clamping and loosening of the resistor, and can effectively meet the rotation operation of zinc oxide resistors of different sizes when applying glass glaze.

[0059] During the resistor coating production process, when the resistor is rotating, the resistor is fixed in a suitable position by the suction cup 402 on the clamping mechanism and the downward pressure cylinder, and the third driving device 401 on the clamping mechanism is controlled to drive the suction cup 402 to drive the resistor to rotate, thereby realizing semi-automatic execution of the resistor side rotation operation during the resistor coating process, reducing the risk of inconsistent thickness and uniformity of the slurry during manual coating, and achieving the purpose of ensuring the consistent, reliable and efficient performance of the thickness and uniformity of the slurry in the resistor coating.

[0060] In order to achieve better slurry transportation, the radius of the first roller 103 does not exceed 1 / 2 of the inner height of the slurry tank 101 , and the first roller 103 is not tangent to the bottom of the slurry tank 101 .

[0061] This solution also includes a controller, and the first drive device 102, the second drive device 207, the third drive device 208 and the fourth drive device 403 are all electrically connected or signal connected to the controller. The programmable logic controller is used to control the motion state of the servo motor, cylinder and other parts of the coating device, which can effectively realize the coating operation of resistors of different specifications, reduce the risk of inconsistent thickness and uniformity of the slurry during the manual coating process, and achieve the purpose of ensuring the thickness and uniformity of the slurry in the resistor coating to be consistent, reliable and efficient.

[0062] Specifically, the machine 301 includes a horizontal panel and a vertical panel. The fixed end of the first driving device 102 and the fixed end of the second driving device 207 are respectively fixed on the vertical surface of the machine 305. The first driving device 102 drives the first roller 103 to rotate continuously and steadily based on the control of the controller to stably transport the slurry. The second driving device 207 drives the swing arm 201 and the second roller 202 to make circular motion based on the control of the controller. The fixed end of the third driving device 208 is fixed in the swing arm 201, and drives the second roller 202 to rotate based on the control of the controller.

[0063] In a specific embodiment, the present application provides a coating device for producing resistor strips, including three parts: a glaze supply mechanism, a lifting mechanism, and a clamping mechanism.

[0064] In the glaze supply mechanism, the first driving device 102 drives the first roller 103 to rotate, and the first roller 103 is used to stir and transport the slurry.

[0065] In the lifting mechanism (which can also be regarded as a swing mechanism in this embodiment), it is mainly composed of a swing arm 201 and a second roller 202. The swing arm 201 realizes the arc motion of the second roller 202, that is, the second roller 202 and the first roller 103 are pressed and loosened. When applying the slurry, the outer edge of the resistor is pressed tightly; the third driving device 401 controls the suction cup 402 to drive the resistor to rotate.

[0066] With the second driving device 207 as the driving power source, by controlling the movement state of the swing arm 201, the side of the resistor can be pressed against or moved away from the resistor; with the third driving device 208 as the driving power source, by controlling the movement state of the second roller 202, the side of the resistor can be glazed or repaired.

[0067] The clamping mechanism is mainly composed of a suction cup 402, a pad 404 and a fourth driving device 403. The pad 404 and the suction cup 402 fix the two end faces of the resistor, and the fourth driving device 403 realizes the front and back clamping and loosening operations. The fourth driving device 403 controls the pad 404 to move closer to or away from the end face of the resistor away from the suction cup 402, so as to realize the clamping and loosening of the resistor on the suction cup 402. This prevents the resistor from being eccentric or falling off when the slurry is coated, which affects the thickness and uniformity of the slurry.

[0068] The device of the present invention uses a programmable logic controller to control the motion state of each motor and each cylinder, and can realize uniform rotation in conjunction with the tooling of the coating device, thereby achieving uniformity of the coating.

[0069] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0070] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0071] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A coating device for producing resistor sheets, characterized in that: include: A slurry supply mechanism, comprising a slurry tank (101) for containing slurry, a first driving device (102) and a first roller (103), wherein a movable end of the first driving device (102) is connected to the first roller (103) and is used to drive the first roller (103) to rotate, and the first roller (103) is capable of contacting the slurry in the slurry tank (101); A lifting mechanism, comprising a second driving device (207), a swing arm (201), a third driving device (208) and a second roller (202), wherein the second driving device (207) is used to drive the swing arm (201) to move, the second roller (202) is rotatably provided on the swing arm (201), and the third driving device (208) is used to drive the second roller (202) to rotate; A clamping mechanism, used to connect with the resistor sheet and drive the resistor sheet to rotate; The second driving device (207) is capable of driving the swing arm (201) to move back and forth, so that the second roller (202) switches between the first roller (103) and the resistor sheet on the clamping mechanism, thereby achieving replenishment and transportation of slurry on the second roller (202).

2. The coating device for producing resistor sheets according to claim 1, characterized in that: The second driving device (207) is a rotating power device, the movable end of the second driving device (207) is connected to one end of the swing arm (201) via a driving shaft (204), and the other end of the swing arm (201) is rotatably provided with the second roller (202); Alternatively, the second driving device (207) is a linear module, and the movable end of the second driving device (207) is connected to the swing arm (201).

3. The coating device for producing resistor sheets according to claim 1, characterized in that: The lifting mechanism further comprises a scraper (205), one end of the scraper (205) being fixed on the swing arm (201) and the other end of the scraper (205) being tangent to the second roller (202).

4. The coating device for producing resistor sheets according to claim 1, characterized in that: It also includes a machine platform (301) and a limit plate (302) for limiting the movement range of the swing arm (201), wherein the limit plate (302) is arranged on the machine platform (301).

5. The coating device for producing resistor sheets according to claim 4, characterized in that: The swing arm (201) is also provided with a connecting plate (203) corresponding one-to-one to the limiting plate (302), and the connecting plate (203) is mounted on the swing arm (201) via a connecting column (206).

6. The coating device for producing resistor sheets according to claim 4, characterized in that: The slurry supply mechanism further comprises a mounting bracket (104), and the slurry tank (101) is mounted on the mounting bracket (104); And / or, the fixed end of the first driving device (102) is arranged on the machine platform (301); And / or, the fixed end of the second driving device (207) is arranged on the machine platform (301); And / or, the fixed end of the third driving device (208) is arranged on the swing arm (201).

7. The coating device for producing resistor sheets according to claim 1, characterized in that: The clamping mechanism comprises a third driving device (401) and a connecting station, the third driving device (401) being used to drive the connecting station to rotate, and the connecting station being used to connect the end surface of the resistor sheet.

8. The coating device for producing resistor sheets according to claim 7, characterized in that: The connection station comprises a suction cup (402).

9. The coating device for producing resistor sheets according to claim 8, characterized in that: The connection station further comprises a fourth driving device (403) and a pad (404), wherein the fourth driving device (403) is used to drive the pad (404) to press against an end surface of the resistor away from the suction cup (402).

10. The coating device for producing resistor sheets according to claim 1, characterized in that: The radius of the first roller (103) does not exceed 1 / 2 of the inner height of the slurry trough (101), and the first roller (103) is not tangent to the bottom of the slurry trough (101).

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