Cleaning device for relay assembly

Abstract

The invention discloses a cleaning device for relay assembly, and relates to the technical field of relay contact cleaning, the cleaning device comprises a power distribution cabinet, the upper end of the power distribution cabinet is provided with a mounting plane; the conveying mechanism is mounted on the mounting plane at the upper end of the power distribution cabinet and is used for conveying the relay; the positioning mechanism is installed on the conveying mechanism and used for positioning the relay and conducting the two ends of a coil of the relay; the cleaning mechanism is mounted on a mounting plane at the upper end of the power distribution cabinet; through cooperative arrangement of the cleaning mechanism and the pull-in control mechanism, polishing and cleaning-blowing treatment of each contact of the relay can be achieved, the pull-in or separation state of each contact of the relay is synchronously controlled through operation of the cleaning mechanism, a cleaning plate can enter the space between the contacts conveniently, manual stirring and operation are not needed, the treatment efficiency is improved, and the labor intensity of workers is reduced. And meanwhile, the damage risk of the product is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of relay contact cleaning, and in particular to a cleaning device for relay assembly. Background Art

[0002] A relay is an electrical control device, which mainly includes a coil, a normally open contact, a normally closed contact and a moving contact. When the coil is in an unpowered state, the moving contact maintains contact and conduction with the normally closed contact. When the coil is powered on, the moving contact is displaced, causing the moving contact to separate from the normally closed contact and connect with the normally open contact, thereby achieving the function of circuit switching control.

[0003] Since relay contacts are generally made of copper, it takes some time for the contact parts to be produced, stored and assembled into relays. During this stage, an oxide layer will be generated on the surface of the contact parts, affecting the conductive performance of the contacts. After assembly, the surface needs to be polished and cleaned to ensure the product quality of the relay. Currently, this process needs to be completed manually, with sandpaper inserted between the contacts for polishing, and then an air gun is used for cleaning. The operation process is relatively cumbersome and the processing efficiency is low. When the moving contact is manually moved, the bearing sheet of the moving contact is easily deformed, resulting in a decrease in the qualified rate of the product. Therefore, a cleaning device for relay assembly is needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a cleaning device for relay assembly to solve the problems existing in the prior art mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A cleaning device for relay assembly, comprising: A power distribution cabinet, wherein an installation plane is provided at the upper end of the power distribution cabinet; A conveying mechanism, which is installed on the installation plane at the upper end of the power distribution cabinet and is used to convey the relay; A positioning mechanism, which is installed on the conveying mechanism and is used to position the relay and conduct the two ends of the coil of the relay; A cleaning mechanism, the cleaning mechanism is installed on the installation plane at the upper end of the power distribution cabinet, and the cleaning mechanism is used to remove the oxide layer on the surface of the relay contact; The pull-in control mechanism is installed on the cleaning mechanism and is used to switch the pull-in or pull-out state of each contact of the relay according to the cleaning operation of the cleaning mechanism.

[0006] Preferably, the conveying mechanism includes a conveying frame, a first bracket and an adjustment plate. The conveying frame is installed on the power distribution cabinet through the first bracket. Adjustment plates are connected to both ends of the conveying frame. Pulleys are rotatably connected to the adjustment plates. Conveyor belts are connected to the pulleys at both ends of the conveying frame. A conveying drive motor for driving the pulleys to rotate is also installed on the adjustment plate.

[0007] Preferably, the positioning mechanism includes a positioning block, a slot and a first conductive column. A "T"-shaped slot is provided in the conveying frame. The positioning block is connected to the conveyor belt and is slidably connected to the "T"-shaped slot on the conveying frame. The positioning block is provided with a slot matching the relay pin for plugging and fixing the relay. Mounting holes are provided on both sides of the positioning block. The first conductive column is slidably connected in the mounting hole. The first conductive columns on both sides of the positioning block are respectively connected to the two ends of the coil in the relay. A spring for pushing the first conductive column outward is also provided in the mounting hole. Conductive strips are installed on both sides of the "T"-shaped slot of the conveying frame, and the first conductive column can contact and slide with the conductive strips.

[0008] Preferably, the cleaning mechanism includes a second bracket, a sleeve, a drive shaft and a grinding and blowing assembly. The second bracket is installed on the upper end surface of the distribution cabinet, the sleeve is horizontally installed on the second bracket, the drive shaft is rotatably connected to the sleeve, and a grinding and blowing assembly is installed at the front end of the drive shaft. The grinding and blowing assembly is used to grind the oxide layer on the contact surface and clean and blow away the dust generated by grinding. The second bracket is also equipped with a cleaning drive motor for driving the drive shaft to rotate.

[0009] Preferably, the grinding and blowing assembly includes a cleaning plate, sandpaper and an air outlet block. Two cleaning plates are provided and are distributed front and back on the drive shaft. The cleaning plate is composed of two fan-shaped plates. Sandpaper is provided on both sides of one end of the cleaning plate. The other end of the cleaning plate is connected to an air outlet block. The two cleaning plates alternately grind and clean the normally open contacts and the normally closed contacts.

[0010] Preferably, the suction control mechanism includes an annular shell, a first arc-shaped contact piece and a second arc-shaped contact piece. The annular shell is fixedly mounted on the sleeve, the first arc-shaped contact piece is mounted on the upper end of the inner wall of the annular shell, and the second arc-shaped contact piece is mounted on the lower right corner of the inner wall of the annular shell, which is used to control the opening and closing timing and time of the relay contacts. A rotating block is keyed on the driving shaft, a second conductive column is slidably connected to a hole on the side of the rotating block, and a spring is mounted in the hole on the side of the rotating block. The second conductive column can be connected to the first arc-shaped contact piece or the second arc-shaped contact piece during the rotation of the driving shaft.

[0011] Preferably, it also includes a power supply for supplying power to the coil of the relay, one end of the power supply is electrically connected to the conductive strip on one side of the conveying frame, the conductive strip on the other side of the conveying frame is electrically connected to the second conductive column, the first arc-shaped contact piece and the second arc-shaped contact piece are electrically connected to the other end of the power supply, and when the second conductive column is connected to the first arc-shaped contact piece or the second arc-shaped contact piece, the power supply supplies power to the coil.

[0012] Preferably, the air outlet block is an arc-shaped structure, and arc-shaped strip air outlets are provided on the front and rear side surfaces of the air outlet block, and the air outlets correspond to the positions of the various contacts.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can achieve stable fixation and conveying operation of the relay through the coordinated arrangement of the conveying mechanism and the positioning mechanism, which is convenient for the stringing operation of the device, and can lead out the connection terminals of the relay coil, which is convenient for controlling the attraction or separation state of each contact of the relay, and provides conditions for the cleaning mechanism to clean the contacts.

[0014] 2. The present invention can achieve the grinding and blowing treatment of each contact of the relay through the coordinated setting of the cleaning mechanism and the suction control mechanism, and synchronously control the suction or separation state of each contact of the relay through the operation of the cleaning mechanism, so that the cleaning plate can enter between the contacts easily without manual turning and operation, thereby improving the processing efficiency and reducing the risk of product damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a front perspective structural schematic diagram of the conveying mechanism and the cleaning mechanism of the present invention.

[0017] Figure 3 It is a rear perspective structural schematic diagram of the conveying mechanism and the cleaning mechanism of the present invention.

[0018] Figure 4 It is a left-side stereoscopic structural schematic diagram of the conveying mechanism of the present invention.

[0019] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0020] Figure 6 It is a schematic diagram of the installation position of the positioning mechanism of the present invention.

[0021] Figure 7 For the present invention Figure 6 Schematic diagram of the local enlarged structure at point B in the middle.

[0022] Figure 8It is a schematic diagram of the cleaning mechanism structure of the present invention.

[0023] Fig. 9 It is a schematic diagram of the structure of the suction control mechanism of the present invention.

[0024] In the figure: 1, power distribution cabinet; 2, conveying mechanism; 21, conveying frame; 22, first bracket; 23, adjustment plate; 24, pulley; 25, conveyor belt; 26, conveying drive motor; 3, positioning mechanism; 31, positioning block; 32, slot; 33, first conductive column; 34, conductive strip; 4, relay; 41, coil; 42, normally open contact; 43, normally closed contact; 44, moving contact; 5, cleaning mechanism; 51, second bracket; 52, bushing; 53, drive shaft; 54, grinding and blowing assembly; 541, cleaning plate; 542, sandpaper; 543, air outlet block; 55, cleaning drive motor; 6, suction control mechanism; 61, annular shell; 62, first arc contact piece; 63, second arc contact piece; 64, rotating block; 65, second conductive column. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] See also Figure 1-9 , the present invention provides the following technical solutions: A cleaning device for relay assembly, comprising: a distribution cabinet 1, wherein the upper end of the distribution cabinet 1 is provided with a mounting plane; a conveying mechanism 2, wherein the conveying mechanism 2 is installed on the mounting plane at the upper end of the distribution cabinet 1 and is used to convey the relay 4; the conveying mechanism 2 comprises a conveying frame 21, a first bracket 22 and an adjusting plate 23, wherein the conveying frame 21 is installed on the distribution cabinet 1 through the first bracket 22, and the two ends of the conveying frame 21 are connected with adjusting plates 23, and the adjusting plates 23 are used to adjust the lateral position to facilitate the tension adjustment of a conveyor belt 25, and the adjusting plates 23 are rotatably connected with pulleys 24, and the pulleys 24 at the two ends of the conveying frame 21 are connected with conveyor belts 25, and the adjusting plates 23 are also installed with a conveying drive motor 26 for driving the pulleys 24 to rotate; the conveying mechanism 2 is used to convey the relay 4 to be cleaned to the position of the cleaning mechanism 5, so as to facilitate automatic and continuous cleaning of the relay 4.

[0027] The positioning mechanism 3 is installed on the conveying mechanism 2 and is used to position the relay 4 and to connect the two ends of the coil 41 of the relay 4; the positioning mechanism 3 includes a positioning block 31, a slot 32 and a first conductive column 33. A "T"-shaped slot is provided in the conveying frame 21. The setting of the "T"-shaped slot facilitates the stable conveying of the positioning block 31 and can ensure the stability of the relay 4 during the cleaning process; the positioning block 31 is connected to the conveyor belt 25 and is slidably connected to the "T"-shaped slot on the conveying frame 21. The positioning block 31 is provided with a slot 32 that matches the pin of the relay 4, which is used to plug and fix the relay 4 , mounting holes are provided on both sides of the positioning block 31, and a first conductive column 33 is slidably connected in the mounting hole. The first conductive columns 33 on both sides of the positioning block 31 are respectively connected to the two ends of the coil 41 in the relay 4, and a spring for pushing the first conductive column 33 outward is also provided in the mounting hole. Conductive bars 34 are installed on both sides of the "T"-shaped groove of the conveying frame 21, and the first conductive column 33 can contact and slide with the conductive bar 34; the purpose of setting the first conductive column 33 and the conductive bar 34 is to lead out the two terminals of the coil 41 of the relay 4 while ensuring the movement of the relay 4, so as to facilitate the control of the contact attraction.

[0028] A cleaning mechanism 5 is installed on the installation plane at the upper end of the distribution cabinet 1, and is used to remove the oxide layer on the contact surface of the relay 4; the cleaning mechanism 5 includes a second bracket 51, a sleeve 52, a drive shaft 53 and a grinding and blowing assembly 54, the second bracket 51 is installed on the upper end surface of the distribution cabinet 1, the sleeve 52 is horizontally installed on the second bracket 51, the drive shaft 53 is rotatably connected to the sleeve 52, and a grinding and blowing assembly 54 is installed at the front end of the drive shaft 53, the grinding and blowing assembly 54 is used to grind the oxide layer on the contact surface and blow away the dust generated by grinding, and a cleaning drive motor 55 is also installed on the second bracket 51 for driving the drive shaft 53 to rotate; the cleaning mechanism 5 can clean and blow the normally closed contact 43 after grinding during the grinding of the normally closed contact 43, thereby improving the efficiency of the cleaning process.

[0029] The grinding and blowing assembly 54 includes a cleaning plate 541, sandpaper 542 and an air outlet block 543. There are two cleaning plates 541, which are distributed front and back on the driving shaft 53. The cleaning plate 541 is composed of two fan-shaped plates. Sandpaper 542 is provided on both sides of one end of the cleaning plate 541. The other end of the cleaning plate 541 is connected to an air outlet block 543. The two cleaning plates 541 alternately grind and blow the normally open contact 42 and the normally closed contact 43; the two cleaning plates 541 are staggered at a certain angle, which can be set to 5-10 degrees. The purpose is to allow the sandpaper 542 to enter between the contacts first after the contacts are separated, and then the contacts are closed to clamp the sandpaper 542, so that the sandpaper 542 can move to grind the contacts, and then the air outlet block 543 on the other cleaning plate 541 enters between the contacts on the other side for cleaning and blowing to avoid motion interference. The air outlet block 543 is an arc-shaped structure, and arc-shaped strip air outlets are provided on the front and rear sides of the air outlet block 543. The air outlets correspond to the positions of each contact. An air inlet is provided on the air outlet block 543, and air is supplied through an external air supply device. This setting enables the air to be blown directly onto the contact surface. Compared with manually using an air gun to blow parallel to the contact surface, this method has a better cleaning effect.

[0030] The suction control mechanism 6 is installed on the cleaning mechanism 5 and is used to switch the suction or separation state of each contact of the relay 4 according to the cleaning operation of the cleaning mechanism 5; the suction control mechanism 6 includes an annular shell 61, a first arc-shaped contact piece 62 and a second arc-shaped contact piece 63, the annular shell 61 is fixedly installed on the shaft sleeve 52, the first arc-shaped contact piece 62 is installed on the upper end of the inner wall of the annular shell 61, and the second arc-shaped contact piece 63 is installed on the lower right corner of the inner wall of the annular shell 61, which is used to control the opening and closing timing and time of the contacts of the relay 4. A rotating block 64 is keyed on the driving shaft 53, and a second conductive column 65 is slidably connected to a hole on the side of the rotating block 64, and a spring is installed in the hole on the side of the rotating block 64. The second conductive column 65 can be connected to the first arc-shaped contact piece 62 or the second arc-shaped contact piece 63 during the rotation of the driving shaft 53; the suction control mechanism 6 can cooperate with the cleaning mechanism 5 to control the opening and closing of the moving contact 44 and the normally open contact 42 and the normally closed contact 43 according to the rotation position of the cleaning plate 541, so as to prevent the cleaning plate 541 from directly entering between the contacts and damaging the relay 4.

[0031] The present invention also includes a power supply for supplying power to the coil 41 of the relay 4, one end of the power supply is electrically connected to the conductive strip 34 on one side of the conveying frame 21, the conductive strip 34 on the other side of the conveying frame 21 is electrically connected to the second conductive column 65, the first arc-shaped contact piece 62 and the second arc-shaped contact piece 63 are electrically connected to the other end of the power supply, when the second conductive column 65 is connected to the first arc-shaped contact piece 62 or the second arc-shaped contact piece 63, the power supply supplies power to the coil 41; the suction control mechanism 6 is used as a switch for turning on and off the power supply of the coil 41, and the auxiliary cleaning mechanism 5 cleans the contacts of the relay 4.

[0032] The working process of the present invention is as follows: During the assembly production of the relay 4, the relay 4 without the housing installed is plugged into the positioning block 31. This step can be completed by a robot arm on the production line. The conveying drive motor 26 drives the pulley 24 to rotate, so that the conveyor belt 25 drives the positioning block 31 to move. The positioning block 31 conveys the relay 4 to the position of the cleaning mechanism 5 and stops moving.

[0033] The cleaning drive motor 55 is started to drive the drive shaft 53 to rotate, and the drive shaft 53 drives the grinding and blowing assembly 54 to rotate clockwise. When the second conductive column 65 is in contact with the second arc-shaped contact piece 63, the coil 41 is energized, so that the moving contact 44 is separated from the normally closed contact 43 and contacts the normally open contact 42. In this process, the cleaning plate 541 with sandpaper 542 on the front side of the drive shaft 53 first enters between the normally closed contact 43 and the moving contact 44. After the second arc-shaped contact piece 63 is separated from the coil 41, the power is cut off, the moving contact 44 is reset, and the moving contact 44 and the normally closed contact 43 clamp the cleaning plate 541 with the sandpaper 542, and the cleaning plate 541 drives the sandpaper 542 to move, so as to grind the front side of the moving contact 44 and the normally closed contact 43; the cleaning plate 541 with the air outlet block 543 on the rear side of the driving shaft 53 then enters between the moving contact 44 and the normally open contact 42, so as to clean and blow the contact surface.

[0034] After the grinding of the front side of the moving contact 44 and the normally closed contact 43 is completed, the driving shaft 53 continues to rotate, and the cleaning plate 541 with sandpaper 542 on the rear side of the driving shaft 53 first enters between the normally open contact 42 and the moving contact 44, and then the second conductive column 65 contacts and conducts with the first arc-shaped contact piece 62, so that the moving contact 44 and the normally open contact 42 clamp the cleaning plate 541 with sandpaper 542, and the sandpaper 542 moves to achieve the grinding process; the cleaning plate 541 with the air outlet block 543 on the front side of the driving shaft 53 then enters between the normally closed contact 43 and the normally open contact 42 to achieve the cleaning and blowing process of the polished contacts, thereby completing the automatic grinding and blowing process of all contacts on the relay 4; the device can set the number of grinding times according to actual conditions.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for relay assembly, characterized in that: include: A power distribution cabinet (1), wherein an upper end of the power distribution cabinet (1) is provided with a mounting plane; A conveying mechanism (2), the conveying mechanism (2) being mounted on a mounting plane at the upper end of the power distribution cabinet (1) and being used to convey the relay (4); A positioning mechanism (3), the positioning mechanism (3) being mounted on the conveying mechanism (2) and being used to position the relay (4) and to connect two ends of the coil (41) of the relay (4); A cleaning mechanism (5), the cleaning mechanism (5) being mounted on a mounting plane at the upper end of the power distribution cabinet (1), the cleaning mechanism (5) being used to remove an oxide layer on the contact surface of the relay (4); A pull-in control mechanism (6) is mounted on the cleaning mechanism (5) and is used to switch the pull-in or pull-out state of each contact of the relay (4) according to the cleaning operation of the cleaning mechanism (5).

2. A cleaning device for relay assembly according to claim 1, characterized in that: The conveying mechanism (2) comprises a conveying frame (21), a first bracket (22) and an adjusting plate (23); the conveying frame (21) is mounted on the power distribution cabinet (1) via the first bracket (22); the adjusting plates (23) are connected to the two ends of the conveying frame (21); the adjusting plates (23) are rotatably connected to pulleys (24); the pulleys (24) at the two ends of the conveying frame (21) are connected to conveyor belts (25); and a conveying drive motor (26) for driving the pulleys (24) to rotate is also mounted on the adjusting plate (23).

3. A cleaning device for relay assembly according to claim 2, characterized in that: The positioning mechanism (3) comprises a positioning block (31), a slot (32) and a first conductive column (33); a "T"-shaped slot is provided in the conveying frame (21); the positioning block (31) is connected to the conveying belt (25) and is slidably connected to the "T"-shaped slot on the conveying frame (21); a slot (32) matching the pin of the relay (4) is provided on the positioning block (31) for plugging and fixing the relay (4); mounting holes are provided on both sides of the positioning block (31); the first conductive column (33) is slidably connected in the mounting holes; the first conductive columns (33) on both sides of the positioning block (31) are respectively connected to two ends of the coil (41) in the relay (4); a spring for pushing the first conductive column (33) outward is also provided in the mounting holes; conductive bars (34) are installed on both sides of the "T"-shaped slot of the conveying frame (21); the first conductive column (33) can contact and slide with the conductive bar (34).

4. A cleaning device for relay assembly according to claim 3, characterized in that: The cleaning mechanism (5) comprises a second bracket (51), a shaft sleeve (52), a drive shaft (53) and a grinding and blowing assembly (54); the second bracket (51) is mounted on the upper end surface of the power distribution cabinet (1); the shaft sleeve (52) is horizontally mounted on the second bracket (51); the drive shaft (53) is rotatably connected to the shaft sleeve (52); a grinding and blowing assembly (54) is mounted at the front end of the drive shaft (53); the grinding and blowing assembly (54) is used to grind the oxide layer on the contact surface and to blow away dust generated by grinding; a cleaning drive motor (55) is also mounted on the second bracket (51) for driving the drive shaft (53) to rotate.

5. A cleaning device for relay assembly according to claim 4, characterized in that: The grinding and blowing assembly (54) comprises a cleaning plate (541), sandpaper (542) and an air outlet block (543). Two cleaning plates (541) are provided and are distributed front and rear on the driving shaft (53). The cleaning plate (541) is composed of two fan-shaped plates. Sandpaper (542) is provided on both side surfaces of one end of the cleaning plate (541). The other end of the cleaning plate (541) is connected to the air outlet block (543). The two cleaning plates (541) alternately grind and blow the normally open contact (42) and the normally closed contact (43).

6. A cleaning device for relay assembly according to claim 4, characterized in that: The pull-in control mechanism (6) comprises an annular shell (61), a first arc-shaped contact piece (62) and a second arc-shaped contact piece (63); the annular shell (61) is fixedly mounted on the shaft sleeve (52); the first arc-shaped contact piece (62) is mounted on the upper end of the inner wall of the annular shell (61); the second arc-shaped contact piece (63) is mounted on the lower right corner of the inner wall of the annular shell (61) for controlling the opening and closing timing and time of the contacts of the relay (4); a rotating block (64) is key-connected to the upper portion of the drive shaft (53); a second conductive column (65) is slidably connected to a hole on the side of the rotating block (64); a spring is mounted in the hole on the side of the rotating block (64); the second conductive column (65) can be electrically connected to the first arc-shaped contact piece (62) or the second arc-shaped contact piece (63) during the rotation of the drive shaft (53).

7. A cleaning device for relay assembly according to claim 6, characterized in that: It also includes a power source for supplying power to the coil (41) of the relay (4); one end of the power source is electrically connected to a conductive strip (34) on one side of the conveying frame (21); the conductive strip (34) on the other side of the conveying frame (21) is electrically connected to a second conductive column (65); the first arc-shaped contact piece (62) and the second arc-shaped contact piece (63) are electrically connected to the other end of the power source; when the second conductive column (65) is conductively connected to the first arc-shaped contact piece (62) or the second arc-shaped contact piece (63), the power source supplies power to the coil (41).

8. A cleaning device for relay assembly according to claim 5, characterized in that: The air outlet block (543) is an arc-shaped structure, and arc-shaped strip air outlets are provided on the front and rear side surfaces of the air outlet block (543), and the air outlets correspond to the positions of the various contact points.

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