A cleaning device for relay assembly

Abstract

The invention discloses a cleaning device for relay assembly, which relates to the technical field of relay contact cleaning, and comprises: a distribution cabinet, wherein an installation plane is provided at the upper end of the distribution cabinet; a conveying mechanism, wherein the conveying mechanism is installed on the installation plane at the upper end of the distribution cabinet and is used for conveying the relay; a positioning mechanism, wherein the positioning mechanism is installed on the conveying mechanism and is used for positioning the relay and for conducting the two ends of the coil of the relay; and a cleaning mechanism, wherein the cleaning mechanism is installed on the installation plane at the upper end of the distribution cabinet; the invention can realize the grinding and blowing treatment of each contact of the relay through the coordinated arrangement 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 as to facilitate the cleaning plate to enter between each contact, without manual shifting and operation, thereby improving the processing efficiency and reducing the risk of product damage.

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:

[0006] A cleaning device for relay assembly, comprising:

[0007] A power distribution cabinet, wherein an installation plane is provided at the upper end of the power distribution cabinet;

[0008] 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;

[0009] 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;

[0010] 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;

[0011] 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.

[0012] Preferably, the conveying mechanism includes a conveying frame, a first bracket, and an adjusting plate. The conveying frame is mounted on the power distribution cabinet through the first bracket. Both ends of the conveying frame are connected with the adjusting plate. A pulley is rotatably connected to the adjusting plate. A conveyor belt is connected to the pulleys at both ends of the conveying frame. The adjusting plate is also provided with a conveying drive motor for driving the pulley to rotate.

[0013] Preferably, the positioning mechanism includes a positioning block, a slot, and a first conductive column. A "T"-shaped groove is provided in the conveying frame. The positioning block is connected to the conveyor belt and slidably connected to the "T"-shaped groove in 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. A first conductive column is slidably connected in the mounting holes. The first conductive columns on both sides of the positioning block are respectively electrically connected to both ends of the coil in the relay. A spring for pushing the first conductive column outwards is also provided in the mounting holes. Conductive strips are installed on both sides inside the "T"-shaped groove of the conveying frame. The first conductive column can contact and slide with the conductive strip.

[0014] Preferably, the cleaning mechanism includes a second bracket, a bushing, a drive shaft, and a grinding and blowing assembly. The second bracket is mounted on the upper end face of the power distribution cabinet. The bushing is horizontally mounted on the second bracket. The drive shaft is rotatably connected to the bushing. A grinding and blowing assembly is installed at the front end of the drive shaft. The grinding and blowing assembly is used for grinding the oxide layer on the contact surface and blowing the dust generated by grinding. The second bracket is also provided with a cleaning drive motor for driving the drive shaft to rotate.

[0015] Preferably, the grinding and blowing assembly includes a cleaning plate, sandpaper, and an air outlet block. There are two cleaning plates, which are distributed front and back on the drive shaft. The cleaning plate is composed of two sector plates. Sandpaper is provided on both side surfaces at one end of the cleaning plate. An air outlet block is connected to the other end of the cleaning plate. The two cleaning plates alternately grind and blow the normally open contact and the normally closed contact.

[0016] 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 bushing. The first arc-shaped contact piece is mounted on the upper end of the inner wall of the annular shell. The second arc-shaped contact piece is mounted at the lower right corner of the inner wall of the annular shell for controlling the opening and closing timing and time of the relay contact. A rotating block is key-connected to the drive shaft. A second conductive column is slidably connected in the hole on the side surface of the rotating block, and a spring is installed in the hole on the side surface of the rotating block. The second conductive column can be electrically connected to the first arc-shaped contact piece or the second arc-shaped contact piece during the rotation of the drive shaft.

[0017] 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.

[0018] 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.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 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.

[0021] 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

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a front perspective structural schematic diagram of the conveying mechanism and the cleaning mechanism of the present invention.

[0024] Figure 3 It is a rear perspective structural schematic diagram of the conveying mechanism and the cleaning mechanism of the present invention.

[0025] Figure 4 It is a left-side stereoscopic structural schematic diagram of the conveying mechanism of the present invention.

[0026] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0027] Figure 6 It is a schematic diagram of the installation position of the positioning mechanism of the present invention.

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the local enlarged structure at point B in the middle.

[0029] Figure 8 Schematic structural diagram of the cleaning mechanism of the present invention.

[0030] Figure 9 Schematic structural diagram of the suction control mechanism of the present invention.

[0031] In the figure: 1, power distribution cabinet; 2, conveying mechanism; 21, conveying frame; 22, first support; 23, adjusting plate; 24, pulley; 25, conveyor belt; 26, conveying drive motor; 3, positioning mechanism; 31, positioning block; 32, slot; 33, first conductive column; 34, conductive bar; 4, relay; 41, coil; 42, normally open contact; 43, normally closed contact; 44, moving contact; 5, cleaning mechanism; 51, second support; 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-shaped contact piece; 63, second arc-shaped contact piece; 64, rotating block; 65, second conductive column. Specific embodiments

[0032] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0033] Please refer to Figures 1-9 , the present invention provides the following technical solutions:

[0034] A cleaning device for relay assembly, comprising: a power distribution cabinet 1, an installation plane is provided at the upper end of the power distribution cabinet 1; a conveying mechanism 2, the conveying mechanism 2 is installed on the installation plane at the upper end of the power distribution cabinet 1 and is used for conveying the relay 4; the conveying mechanism 2 includes a conveying frame 21, a first support 22 and an adjusting plate 23, the conveying frame 21 is installed on the power distribution cabinet 1 through the first support 22, both ends of the conveying frame 21 are connected with an adjusting plate 23, the adjusting plate 23 is used for adjusting the horizontal position to facilitate the tension adjustment of the conveyor belt 25, a pulley 24 is rotatably connected to the adjusting plate 23, a conveyor belt 25 is connected to the pulleys 24 at both ends of the conveying frame 21, and a conveying drive motor 26 for driving the pulley 24 to rotate is further installed on the adjusting plate 23; the conveying mechanism 2 is used for conveying the relay 4 to be cleaned to the position of the cleaning mechanism 5 to facilitate the automatic continuous cleaning of the relay 4.

[0035] Positioning mechanism 3, the positioning mechanism 3 is installed on the conveying mechanism 2 and is used for positioning the relay 4 and for conducting both 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. There is a "T"-shaped groove in the conveying frame 21. The setting of the "T"-shaped groove 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 slidably connected to the "T"-shaped groove in the conveying frame 21. The positioning block 31 is provided with a slot 32 matching the pins of the relay 4 for plugging and fixing the relay 4. There are mounting holes on both sides of the positioning block 31. The first conductive columns 33 are slidably connected in the mounting holes. The first conductive columns 33 on both sides of the positioning block 31 are respectively conducted with both ends of the coil 41 in the relay 4. There is also a spring for pushing the first conductive column 33 outwards in the mounting hole. Conductive strips 34 are installed on both sides inside the "T"-shaped groove of the conveying frame 21. The first conductive column 33 can contact and slide with the conductive strip 34. The purpose of the first conductive column 33 and the conductive strip 34 is to lead out both wiring ends of the coil 41 of the relay 4 during the movement of the relay 4, facilitating the control of the contact suction.

[0036] Cleaning mechanism 5, the cleaning mechanism 5 is installed on the installation plane at the upper end of the power distribution cabinet 1. The cleaning mechanism 5 is used for removing the oxide layer on the surface of the contacts of the relay 4. The cleaning mechanism 5 includes a second bracket 51, a bushing 52, a drive shaft 53 and a grinding and blowing assembly 54. The second bracket 51 is installed on the upper end face of the power distribution cabinet 1. The bushing 52 is horizontally installed on the second bracket 51. The drive shaft 53 is rotatably connected to the bushing 52. The front end of the drive shaft 53 is installed with a grinding and blowing assembly 54. The grinding and blowing assembly 54 is used for grinding the oxide layer on the surface of the contacts and blowing the dust generated by the grinding. A cleaning drive motor 55 for driving the drive shaft 53 to rotate is also installed on the second bracket 51. The cleaning mechanism 5 can blow the normally closed contacts 43 after grinding while grinding the normally closed contacts 43, improving the efficiency of the cleaning process.

[0037] The grinding and blowing assembly 54 includes a cleaning plate 541, sandpaper 542, and an air outlet block 543. Two cleaning plates 541 are provided and are distributed front and back on the drive shaft 53. The cleaning plate 541 is composed of two sector plates. Sandpaper 542 is provided on both sides of one end of the cleaning plate 541. An air outlet block 543 is connected to the other end of the cleaning plate 541. 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 by a certain angle, which can be set to 5 - 10 degrees. The purpose is to make the sandpaper 542 enter between the contacts first after the contacts are separated. After entering, the contacts close to clamp the sandpaper 542, facilitating the movement of the sandpaper 542 to grind the contacts. Then, the air outlet block 543 on the other cleaning plate 541 enters between the contacts on the other side for blowing, avoiding movement interference. The air outlet block 543 has an arc-shaped structure. Arc-shaped strip air outlets are provided on the front and back sides of the air outlet block 543. The air outlets correspond to the positions of the respective contacts. An air inlet hole is provided on the air outlet block 543, and air supply is carried out through an external air supply device. This setting enables the air to directly blow 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.

[0038] 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 bushing 52. The first arc-shaped contact piece 62 is installed at the upper end of the inner wall of the annular shell 61. The second arc-shaped contact piece 63 is installed at 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 drive shaft 53. A second conductive column 65 is slidably connected in the 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 conducted with the first arc-shaped contact piece 62 or the second arc-shaped contact piece 63 during the rotation of the drive 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 with the normally open contact 42 and the normally closed contact 43 according to the rotation position of the cleaning plate 541, avoiding the cleaning plate 541 directly entering between the contacts and damaging the relay 4.

[0039] The present invention further 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 the conductive strip 34 on one side of the conveying rack 21. The conductive strip 34 on the other side of the conveying rack 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 source. When the second conductive column 65 is in conduction with the first arc-shaped contact piece 62 or the second arc-shaped contact piece 63, the power source supplies power to the coil 41. The suction control mechanism 6 is used as a switch for turning the power supply of the coil 41 on and off, and the auxiliary cleaning mechanism 5 cleans the contacts of the relay 4.

[0040] The working process of the present invention is as follows:

[0041] In the assembly production of the relay 4, the relay 4 without an installed housing is plugged onto the positioning block 31. This step can be completed by a robotic arm on the production line. The conveying drive motor 26 drives the pulley 24 to rotate, causing the conveyor belt 25 to drive 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.

[0042] The cleaning drive motor 55 is started to drive the drive shaft 53 to rotate. The drive shaft 53 drives the grinding and blowing assembly 54 to rotate clockwise. When the second conductive column 65 is in contact conduction with the second arc-shaped contact piece 63, the coil 41 is energized, causing the moving contact 44 to separate from the normally closed contact 43 and contact the normally open contact 42. During 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. When the second conductive column 65 is separated from the second arc-shaped contact piece 63, the coil 41 is de-energized, and the moving contact 44 resets. The moving contact 44 and the normally closed contact 43 clamp the cleaning plate 541 with sandpaper 542, and the cleaning plate 541 drives the sandpaper 542 to move, realizing the grinding of 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 drive shaft 53 then enters between the moving contact 44 and the normally open contact 42, realizing the blowing of the contact surface.

[0043] After the grinding of the front side of the moving contact 44 and the normally closed contact 43 is completed, the drive shaft 53 continues to rotate. The cleaning plate 541 with sandpaper 542 on the rear side of the drive shaft 53 first enters between the normally open contact 42 and the moving contact 44. Then the second conductive column 65 is in contact conduction with the first arc-shaped contact piece 62, causing the moving contact 44 and the normally open contact 42 to clamp the cleaning plate 541 with sandpaper 542, and the sandpaper 542 moves to realize the grinding process. The cleaning plate 541 with the air outlet block 543 on the front side of the drive shaft 53 then enters between the normally closed contact 43 and the normally open contact 42, realizing the blowing process for the ground contacts, and thus the automatic grinding and blowing processes for all the contacts on the relay 4 can be completed. The device can set the number of grinding times according to the actual situation.

[0044] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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, Including: A power distribution cabinet (1), the upper end of the power distribution cabinet (1) is provided with an installation plane; A conveying mechanism (2), the conveying mechanism (2) is installed on the installation plane at the upper end of the power distribution cabinet (1) and is used for conveying the relay (4); A positioning mechanism (3), the positioning mechanism (3) is installed on the conveying mechanism (2) and is used for positioning the relay (4) and for conducting both ends of the coil (41) of the relay (4); A cleaning mechanism (5), the cleaning mechanism (5) is installed on the installation plane at the upper end of the power distribution cabinet (1), and the cleaning mechanism (5) is used for removing the oxide layer on the contact surface of the relay (4); the cleaning mechanism (5) includes a second bracket (51), a bushing (52), a drive shaft (53) and a grinding and blowing assembly (54), the second bracket (51) is installed on the upper end face of the power distribution cabinet (1), the bushing (52) is horizontally installed on the second bracket (51), the drive shaft (53) is rotatably connected to the bushing (52), 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 for grinding the oxide layer on the contact surface and for blowing the dust generated by grinding, and a cleaning drive motor (55) for driving the drive shaft (53) to rotate is also installed on the second bracket (51); A suction control mechanism (6), the suction control mechanism (6) is installed on the cleaning mechanism (5) and is used for switching 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 bushing (52), a first arc-shaped contact piece (62) is installed on the upper end of the inner wall of the annular shell (61), a second arc-shaped contact piece (63) is installed at the lower right corner of the inner wall of the annular shell (61) for controlling the opening and closing timing and time of the relay (4) contacts, a rotating block (64) is key-connected to the drive shaft (53), a second conductive column (65) is slidably connected in the hole on the side surface of the rotating block (64), and a spring is installed in the hole on the side surface of the rotating block (64), and the second conductive column (65) can be conducted with the first arc-shaped contact piece (62) or the second arc-shaped contact piece (63) during the rotation of the drive shaft (53).

2. The cleaning device for relay assembly according to claim 1, wherein: The conveying mechanism (2) includes a conveying frame (21), a first bracket (22) and an adjusting plate (23), the conveying frame (21) is installed on the power distribution cabinet (1) through the first bracket (22), both ends of the conveying frame (21) are connected with an adjusting plate (23), a pulley (24) is rotatably connected to the adjusting plate (23), a conveyor belt (25) is connected to the pulleys (24) at both ends of the conveying frame (21), and a conveying drive motor (26) for driving the pulley (24) to rotate is also installed on the adjusting plate (23).

3. The cleaning device for relay assembly according to claim 2, characterized in that: The positioning mechanism (3) includes a positioning block (31), a slot (32), and a first conductive column (33). A "T"-shaped groove is provided in the conveying frame (21). The positioning block (31) is connected to the conveyor belt (25) and slidably connected to the "T"-shaped groove in the conveying frame (21). A slot (32) matching the pins 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), and the first conductive columns (33) are slidably connected in the mounting holes. The first conductive columns (33) on both sides of the positioning block (31) are respectively electrically connected to both ends of the coil (41) in the relay (4). A spring for pushing the first conductive column (33) outwards is further provided in the mounting hole. Conductive strips (34) are installed on both sides inside the "T"-shaped groove of the conveying frame (21), and the first conductive column (33) can contact and slide with the conductive strip (34).

4. A cleaning device for relay assembly according to claim 1, wherein: The grinding and blowing assembly (54) includes a cleaning plate (541), sandpaper (542), and an air outlet block (543). Two cleaning plates (541) are provided and are distributed front and back on the drive shaft (53). The cleaning plate (541) is composed of two sector plates. Sandpaper (542) is provided on both sides of one end of the cleaning plate (541), and an air outlet block (543) is connected to the other end of the cleaning plate (541). The two cleaning plates (541) alternately grind and blow the normally open contact (42) and the normally closed contact (43).

5. The cleaning device for relay assembly according to claim 1, characterized in that: It further 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 electrically 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).

6. The cleaning device for relay assembly according to claim 4, characterized in that: The air outlet block (543) has an arc-shaped structure. Arc-shaped strip-shaped air outlets are provided on the front and back sides of the air outlet block (543), and the positions of the air outlets correspond to those of the respective contacts.

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