Automatic polishing equipment for rivet silver contacts

Abstract

The present invention relates to the field of polishing technology, and specifically to an automatic polishing device for rivet silver contacts, comprising a filter container, a polishing container, a magnetic flow guide and a lifting drive. The present application realizes an efficient polishing process of the silver contacts by placing a filter container with a filter hole in the polishing container. In the device, the silver contacts, magnetic steel needles and polishing liquid are placed in the filter container. When the magnetic turntable starts to rotate, the dynamic interaction between the magnetic steel needles and the polishing liquid enables the silver contacts to be polished uniformly and efficiently in a short time. When the polishing operation is completed, the polishing device uses a lifting assembly to lift the filter container. Through the transmission connection between the lifting assembly and the rotating magnetic turntable, it is ensured that the filter container can achieve effective rotation, so that the magnetic steel needles and the polishing liquid are quickly discharged from the filter container.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, and in particular to an automatic polishing device for rivet silver contacts. Background Art

[0002] Rivet electrical contacts, including rivet silver contacts, are widely used in various relays, contactors, thermostats and switchgear of different current levels. As an important factor affecting the working reliability of the switchgear contact system, the performance of rivet electrical contacts is directly related to the safe and stable operation of electrical equipment. Its preparation process generally includes multiple links such as beating, grinding, annealing, pickling and polishing. However, during the grinding process, black spots often appear on the working surface, distributed in granular form, and the attachment depth is relatively large. After testing, the composition of these black spots mainly includes elements such as carbon (C), oxygen (O), iron (Fe) and copper (Cu).

[0003] In-depth analysis revealed that these black spots are mainly caused by the abrasives used in the grinding process of rivets. The organic glue (components of C and O) in the triangular prism and cylindrical abrasives used in the grinding process is easy to solidify and embed into the working surface of the rivet during grinding. In addition, iron powder as an abrasive will also be embedded in the grinding process, and copper is the matrix of the rivet. The above factors work together to cause the formation of black spots.

[0004] Although existing polishing equipment can clean the surface of rivet electrical contacts, once the black spots reach a certain depth, the difficulty of removal increases significantly, resulting in incomplete removal of the black spots. This not only affects the appearance of the rivet electrical contacts, but may also have a negative impact on their performance. Therefore, the preparation process and post-processing technology of rivet electrical contacts urgently need to be studied and optimized in depth to improve their surface quality and enhance the reliability of electrical contact, thereby improving the overall performance and service life of the switch electrical appliance.

[0005] Chinese patent announcement number CN208788155U discloses a magnetic polishing device for removing surface defects of rivet electrical contacts, and its structure includes a body, a magnetic turntable, a forward and reverse motor and a transmission shaft. The output end of the forward and reverse motor of the device is connected to the magnetic turntable through a transmission shaft to achieve effective linkage. A detachable cover is provided on the top of the body, and the magnetic turntable is located below the cover, while the grinding barrel is designed to be detachable for easy maintenance and replacement. Snap-fit ​​parts are fixed on the opposite sides of the body, and the snap-fit ​​part of the grinding barrel forms a locking fit with it to ensure stability. In order to avoid overheating due to long-term work, a cooling fan is provided in the body, and a heat dissipation window is opened at the corresponding position of the outer wall of the body to improve the heat dissipation efficiency. Polishing liquid and a number of magnetic steel needles are placed in the grinding barrel to enhance the polishing effect.

[0006] After the polishing device completes polishing, the operating process requires pouring out the polishing liquid in the grinding barrel and separating the electric contacts from the magnetic steel needles. This series of operations is not only time-consuming, but also cumbersome, which brings additional work burden to the user. In actual operation, it is first necessary to carefully pour out the polishing liquid in the grinding barrel to ensure that the liquid does not leak or splash. This process not only affects work efficiency, but also increases the cleaning work. Next, the steps of separating the electric contacts and the magnetic steel needles are equally complicated and require the use of a filter basket or other auxiliary devices to complete, which increases the difficulty of operation and potential safety risks.

[0007] Due to these tedious steps, the overall polishing efficiency is significantly affected. Frequent manual operations are not only time-consuming, but may also cause equipment wear, thus affecting the long-term stability of the polishing device. Summary of the invention

[0008] In view of the problems of the prior art, an automatic polishing device for rivet silver contacts is provided. The device places a filter container in a polishing container so that the silver contacts are polished by magnetic steel needles and polishing liquid in the filter container. After the polishing is completed, the filter container is lifted by a lifting drive and rotated in the large inner diameter filter section of the polishing container, thereby solving the problem that the prior equipment cannot quickly remove the silver contacts from the polishing liquid and the magnetic steel needles.

[0009] In order to solve the problems of the prior art, the present invention provides an automatic polishing device for rivet silver contacts, comprising a filtering container, a polishing container, a magnetic flow guide and a lifting drive, wherein the filtering container is coaxially placed in the polishing container, and a rectangular array of filtering holes is provided on the circumferential surface of the lower part of the filtering container; the polishing container comprises a fixed disk, the edge of which extends upward and forms a polishing section and a filtering section in sequence, the inner circumferential wall of the polishing section is gap-matched with the edge of the filtering container, and the inner diameter of the filtering section is larger than the inner diameter of the polishing section; the magnetic flow guide comprises a magnetic turntable arranged at the bottom of the fixed disk, and a rotating drive for driving the magnetic turntable to rotate at the bottom of the fixed disk; the lifting drive is arranged at the bottom of the fixed disk, and the lifting and lifting drive has a lifting component that penetrates the fixed disk and docks with the filtering container, and when the lifting component lifts the filtering container so that all the filtering holes face the inner wall of the filtering section, the lifting component is transmission-connected with the magnetic turntable, and the lifting component drives the filtering container to rotate in the polishing container.

[0010] Preferably, a avoidance opening coaxial with the magnetic turntable is provided at the center position thereof, the lifting assembly includes a lifting shaft passing through the avoidance opening and coaxially sliding through the fixed plate, the lifting assembly also includes a linear cylinder arranged at the bottom of the lifting shaft, the top end of the lifting shaft has a docking joint, the docking joint can be engaged with the bottom end of the filter container, and a torque transmission ring is also provided on the lifting shaft, when the torque transmission ring abuts against the bottom end of the magnetic turntable, the magnetic turntable drives the torque transmission ring to rotate coaxially; the output shaft of the linear cylinder is coaxially rotationally connected to the bottom end of the lifting shaft.

[0011] Preferably, the top of the torque transfer ring is provided with active tooth grooves distributed along its circumference, and the active tooth grooves extend radially along the torque transfer ring. The bottom end of the magnetic turntable is provided with an active rack that can engage with the active tooth grooves along the longitudinal direction. When the active tooth grooves engage with the active rack, the magnetic turntable drives the torque transfer ring to rotate.

[0012] Preferably, a stepped groove is provided on the circumferential surface of the lifting shaft, and a limiting ring is also provided on the lifting shaft at the bottom of the stepped groove. The torque transmission ring is slidably arranged between the stepped groove and the limiting ring, and an elastic reset element is also provided between the torque transmission ring and the limiting ring, and the torque transmission ring elastically abuts against the stepped groove.

[0013] Preferably, the docking joint is disc-shaped, and the outer wall of the docking joint is inclined to form a conical annular surface whose outer diameter gradually decreases from bottom to top, and the conical annular surface is provided with driven tooth grooves distributed along its circumference, and the bottom end of the filter container is provided with a groove that can be engaged with the docking joint, and the inner circumferential wall of the groove is provided with a driven rack that can be coupled with the driven tooth groove along the longitudinal direction.

[0014] Preferably, the magnetic deflector also includes an inner bracket arranged at the bottom of the fixed disk, a fixed ring is arranged at the top of the inner bracket, the magnetic turntable is coaxially rotatably arranged in the fixed ring, and a driven gear ring coaxial with the magnetic turntable is arranged at the bottom end of the magnetic turntable. The rotation driver includes a servo motor and a driving gear, the servo motor is fixedly arranged on the inner bracket, and the driving gear is coaxially fixedly arranged on the output shaft of the servo motor, and the driving gear is meshed with the driven gear ring.

[0015] Preferably, the polishing container also includes a sliding cylinder coaxially slidably arranged on the outer peripheral wall of the fixed plate, and the part of the sliding cylinder higher than the fixed plate forms a polishing section and a filtering section. The automatic polishing equipment also includes a conduction mechanism arranged at the bottom of the fixed plate, and the conduction mechanism has a trigger part transmission connected to the lifting assembly, and an execution part transmission connected to the bottom end of the sliding cylinder. When the lifting assembly moves upward, the sliding cylinder moves downward relative to the fixed plate.

[0016] Preferably, the triggering part includes an annular capsule coaxially arranged at the bottom end of the fixed disk, the bottom end of the annular capsule is rotatably connected to the top end of the torque transmission ring, and the torque transmission ring squeezes the annular capsule when it moves upward. The executing part includes a fixed cylinder coaxially and fixedly arranged at the bottom end of the fixed disk, a piston ring is arranged at the bottom end of the inner circumferential wall of the sliding cylinder, and the piston ring is sealingly and slidably arranged on the outer circumferential wall of the fixed cylinder. A pressure chamber is formed between the inner circumferential wall of the sliding cylinder and the outer circumferential wall of the fixed cylinder, and a connecting pipe connected to the pressure chamber is also arranged at the top end of the annular capsule, and hydraulic oil is filled in the annular capsule and the pressure chamber.

[0017] Preferably, a liquid discharge port is provided at the top of the filter section, and a valve is provided on the liquid discharge port.

[0018] Preferably, the automatic polishing device further comprises an outer bracket, the outer bracket comprises guide columns distributed along the circumference of the fixed cylinder, a connecting ear is provided at the bottom end of the outer peripheral wall of the sliding cylinder, and the guide column slides longitudinally through the connecting ear.

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

[0020] The present application realizes an efficient polishing process of the silver contact by placing a filter container with a filter hole in a polishing container. In the device, the silver contact, the magnetic steel needle and the polishing liquid are placed in the filter container. When the magnetic turntable starts to rotate, the dynamic interaction between the magnetic steel needle and the polishing liquid enables the silver contact to be polished evenly and efficiently in a short time. In this process, the magnetic steel needle continuously contacts the surface of the silver contact with the help of the polishing liquid, removes surface impurities and oxides, and significantly improves the surface finish and quality. When the polishing operation is completed, the polishing equipment uses a lifting assembly to lift the filter container, and through the transmission connection between the lifting assembly and the rotating magnetic turntable, it is ensured that the filter container can be effectively rotated, so that the magnetic steel needle and the polishing liquid are quickly discharged from the filter container. This design not only improves work efficiency, but also simplifies the process of filtering operations, so that polishing and cleaning can be carried out efficiently and synchronously, and finally significantly improves the polishing efficiency of the silver contact, and ensures material protection and efficient use of resources during the polishing process. At the same time, when the filter container is raised to an appropriate height through the conduction mechanism, the sliding cylinder can automatically descend so that the lower part of the filter container is located in the filter section, thereby improving the stability of the filter container during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereoscopic diagram of an automatic polishing device for rivet silver contacts.

[0022] Figure 2 It is a three-dimensional cross-sectional view of an automatic polishing device for rivet silver contacts.

[0023] Figure 3 The cross-sectional view is a rivet silver contact automatic polishing device.

[0024] Figure 4 yes Figure 3 A partial enlarged view of point A.

[0025] Figure 5 yes Figure 3 A partial enlarged view of point B.

[0026] Figure 6 yes Figure 3 A partial enlarged view of point C.

[0027] Figure 7 yes Figure 3 A partial enlarged view of point D.

[0028] Figure 8 It is a stereoscopic image of a filter container in an automatic polishing device for rivet silver contacts from a first viewing angle.

[0029] Fig. 9 It is a stereoscopic image of a filter container in an automatic polishing device for rivet silver contacts from a second viewing angle.

[0030] Fig.10 It is a stereoscopic view of a rotating driver in an automatic polishing device for rivet silver contacts.

[0031] Fig.11 The present invention is a schematic diagram of a filter container in a rivet silver contact automatic polishing device after being lifted up.

[0032] The numbers in the figure are: 1, filter container; 11, filter hole; 2, polishing container; 21, fixed plate; 22, polishing section; 23, filter section; 24, sliding cylinder; 241, piston ring; 242, connecting ear; 25, pressure chamber; 26, drain port; 27, valve; 31, magnetic turntable; 312, driven gear ring; 32, rotating driver; 321, servo motor; 322, driving gear; 33, inner bracket; 331, fixed ring; 41, lifting assembly; 411, lifting shaft; 412, docking joint; 413, torque transmission ring; 414, limit ring; 415, elastic reset element; 42, linear cylinder; 51, annular capsule; 52, connecting pipe; 53, fixed cylinder; 6, outer bracket; 61, guide column. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides:

[0035] A rivet silver contact automatic polishing device comprises a filter container 1, a polishing container 2, a magnetic flow guide and a lifting drive, wherein the filter container 1 is coaxially placed in the polishing container 2, and a rectangular array of filter holes 11 is arranged on the circumferential surface of the lower part of the filter container 1; the polishing container 2 comprises a fixed disk 21, the edge of the fixed disk 21 extends upward and forms a polishing section 22 and a filtering section 23 in sequence, the inner circumferential wall of the polishing section 22 is in gap with the edge of the filter container 1, and the inner diameter of the filtering section 23 is larger than the inner diameter of the polishing section 22; the magnetic flow guide comprises a setting A magnetic turntable 31 is at the bottom of the fixed disk 21, and a rotating driver 32 is used to drive the magnetic turntable 31 to rotate at the bottom of the fixed disk 21; a lifting driver is arranged at the bottom of the fixed disk 21, and the lifting and lifting driver has a lifting component 41 that penetrates the fixed disk 21 and docks with the filter container 1. When the lifting component 41 lifts the filter container 1 so that all the filter holes 11 face the inner wall of the filter section 23, the lifting component 41 is transmission-connected with the magnetic turntable 31, and the lifting component 41 drives the filter container 1 to rotate in the polishing container 2.

[0036] When in use, the filter container 1 equipped with the silver contact is placed in the polishing container 2, so that the lifting assembly 41 can be docked with the bottom end of the filter container 1, and then the polishing liquid and the magnetic steel needle are put into the filter container 1, and the magnetic deflector is started, so that the magnetic turntable 31 rotates at the bottom of the fixed disk 21, and the magnetic steel needle is affected by the changing magnetic field to disturb the polishing liquid. The introduction of the polishing liquid can effectively reduce the temperature and prevent the material from overheating, thereby avoiding deformation of the material or performance degradation caused by high temperature. The polishing liquid can form a lubricating film between the magnetic steel needle and the silver contact, reduce friction and reduce wear. This helps to improve the uniformity and surface quality of polishing, while extending the service life of the equipment and polishing media. The polishing liquid can effectively remove waste, oxides and grinding particles generated during the polishing process, keep the polishing environment clean, and avoid the influence of these impurities on the polishing effect. And when the magnetic steel needle moves, it rubs and collides with the surface of the silver contact, removes dirt, oxides and other impurities on the surface, and improves the surface finish.

[0037] The filter hole 11 is smaller than the silver contact and larger than the magnetic steel needle.

[0038] After polishing is completed, the lifting drive is started so that the lifting assembly 41 lifts the filter container 1 upward until the lower part of the filter container 1 is located in the filter section 23. During this process, the polishing liquid flows into the polishing section 22 through the filter hole 11, that is, flows to the bottom of the filter container 1. At the same time, the magnetic turntable 31 and the lifting assembly 41 are driven, so that the magnetic turntable 31 inputs torque to the lifting assembly 41, thereby rotating the filter container 1 in the filter section 23. Under the action of centrifugal force, the magnetic steel needle and the residual polishing liquid will pass through the filter hole 11 and separate from the silver contact.

[0039] After the magnetic steel needle and the polishing liquid are separated from the silver contact, the filtering container 1 of the only silver contact is taken out from the polishing container 2, and the polishing operation is completed.

[0040] The present application realizes an efficient polishing process of the silver contact by placing a filter container 1 with a filter hole 11 in a polishing container 2. In the device, the silver contact, the magnetic steel needle and the polishing liquid are placed in the filter container 1. When the magnetic turntable 31 starts to rotate, the dynamic interaction between the magnetic steel needle and the polishing liquid enables the silver contact to be polished uniformly and efficiently in a short time. In this process, the magnetic steel needle continuously contacts the surface of the silver contact with the help of the polishing liquid, removes surface impurities and oxides, and significantly improves the surface finish and quality. When the polishing operation is completed, the polishing equipment uses the lifting component 41 to lift the filter container 1. Through the transmission connection between the lifting component 41 and the rotating magnetic turntable 31, it is ensured that the filter container 1 can be effectively rotated, so that the magnetic steel needle and the polishing liquid are quickly discharged from the filter container 1. This design not only improves the work efficiency, but also simplifies the process of the filtering operation, so that polishing and cleaning can be carried out efficiently and synchronously, and finally significantly improves the polishing efficiency of the silver contact, and ensures the material protection and efficient use of resources during the polishing process.

[0041] like Figure 2 As shown, a coaxial avoidance opening is provided at the center position of the magnetic turntable 31, and the lifting component 41 includes a lifting shaft 411 that passes through the avoidance opening and coaxially slides through the fixed plate 21. The lifting component 41 also includes a linear cylinder 42 arranged at the bottom of the lifting shaft 411. The top of the lifting shaft 411 has a docking joint 412, and the docking joint 412 can be engaged with the bottom end of the filter container 1. A torque transmission ring 413 is also provided on the lifting shaft 411. When the torque transmission ring 413 abuts against the bottom end of the magnetic turntable 31, the magnetic turntable 31 drives the torque transmission ring 413 to rotate coaxially; the output shaft of the linear cylinder 42 is coaxially rotatably connected to the bottom end of the lifting shaft 411.

[0042] At the center of the magnetic turntable 31, a coaxial avoidance is designed so that the lifting shaft 411 passing through it does not affect its normal rotation. The structure of the lifting assembly 41 includes a lifting shaft 411 that passes through the avoidance and slides coaxially with the fixed disk 21. This lifting shaft 411 can not only move freely, but also be connected to the linear cylinder 42 arranged at its bottom, so as to ensure the smooth operation of the lifting assembly 41. In addition, a docking joint 412 is provided at the top of the lifting shaft 411, which can be engaged with the bottom end of the filter container 1 to ensure a stable connection during the working process. A torque transmission ring 413 is also arranged on the lifting shaft 411. When the torque transmission ring 413 abuts against the bottom end of the magnetic turntable 31, the magnetic turntable 31 can drive the torque transmission ring 413 to rotate coaxially, thereby driving the filter container 1 to rotate to achieve the effect of centrifugal separation. The output shaft of the linear cylinder 42 is coaxially rotatably connected to the bottom end of the lifting shaft 411 , which can effectively prevent the lifting shaft 411 from transmitting torque to the linear cylinder 42 .

[0043] like Figure 8 and Fig. 9 As shown, the top of the torque transmission ring 413 is provided with active teeth along its circumference, and the active teeth extend radially along the torque transmission ring 413. The bottom end of the magnetic turntable 31 is provided with an active rack that can engage with the active teeth along the longitudinal direction. When the active teeth are coupled with the active rack, the magnetic turntable 31 drives the torque transmission ring 413 to rotate.

[0044] The active tooth groove extends radially along the torque transmission ring 413, effectively enhancing its meshing ability with other components. On this basis, an active rack that can mesh with the active tooth groove in the longitudinal direction is installed at the bottom end of the magnetic turntable 31. When the active tooth groove is docked with the active rack, the magnetic turntable 31 will smoothly drive the torque transmission ring 413 to rotate under its own drive. The torque transmission ring 413 not only realizes efficient power transmission, but also ensures the accuracy and stability of the operation during the rotation process, thereby improving the working efficiency and reliability of the overall system.

[0045] like Figure 4 and Figure 5 As shown, a stepped groove is arranged on the circumferential surface of the lifting shaft 411, and a limiting ring 414 is also arranged on the lifting shaft 411 and located at the bottom of the stepped groove. The torque transmission ring 413 is slidably arranged between the stepped groove and the limiting ring 414, and an elastic reset element 415 is also arranged between the torque transmission ring 413 and the limiting ring 414, and the torque transmission ring 413 elastically abuts against the stepped groove.

[0046] The lifting shaft 411 is provided with a limit ring 414 located at the bottom of the step groove, which serves to limit the movement range of the torque transmission ring 413. The torque transmission ring 413 is embedded and slidably arranged between the step groove and the limit ring 414 to ensure its flexibility and stability during rotation. An elastic reset element 415 is added between the torque transmission ring 413 and the limit ring 414. The elastic reset element 415 enables the torque transmission ring 413 to achieve good elastic abutment during movement and always maintain the appropriate position in the step groove. At the same time, when the torque of the magnetic turntable 31 is too large, the active rack and the active tooth groove can be separated to avoid damage to the lifting shaft 411. This design not only improves the reliability of the entire device, but also effectively reduces the wear between components, thereby extending the service life of the equipment and ensuring efficient performance in various operating environments.

[0047] like Figure 8 and Fig. 9 As shown, the docking joint 412 is disc-shaped, and the outer wall of the docking joint 412 is inclined to form a conical annular surface whose outer diameter gradually decreases from bottom to top, and the conical annular surface is provided with driven tooth grooves distributed along its circumference, and the bottom end of the filter container 1 is provided with a groove that can engage with the docking joint 412, and the inner circumferential wall of the groove is provided with a driven rack that can engage with the driven tooth groove along the longitudinal direction.

[0048] The butt joint 412 is designed in a disc shape, and the outer wall of the butt joint 412 forms a conical ring surface with an outer diameter that gradually decreases from bottom to top. On the conical ring surface, multiple driven tooth grooves are distributed along its circumference, ensuring that it can form a firm and precise meshing with other components when connected. The bottom end of the filter container 1 is specially provided with a groove that can be coupled with the butt joint 412, and the inner circumferential wall of the groove is provided with a driven rack that can mesh with the driven tooth groove in the longitudinal direction. The coordination of the rack and the tooth groove not only enhances the stability of the connection, but also improves the transmission efficiency of the overall system, ensuring accurate power transmission and efficient working performance during operation.

[0049] like Figure 6 and Fig.10 As shown, the magnetic deflector also includes an inner bracket 33 arranged at the bottom of the fixed disk 21, a fixed ring 331 is arranged at the top of the inner bracket 33, the magnetic turntable 31 is coaxially rotatably arranged in the fixed ring 331, and a driven gear ring 312 coaxial with the magnetic turntable 31 is arranged at the bottom end of the magnetic turntable 31. The rotation driver 32 includes a servo motor 321 and a driving gear 322. The servo motor 321 is fixedly arranged on the inner bracket 33, and the driving gear 322 is coaxially and fixedly arranged on the output shaft of the servo motor 321, and the driving gear 322 is meshed with the driven gear ring 312.

[0050] The inner bracket 33 not only provides the necessary support, but also enhances the stability of the entire system. At the top of the inner bracket 33, a fixed ring 331 is configured, and the magnetic turntable 31 is coaxially installed in the fixed ring 331, so that it can rotate smoothly. At the bottom of the magnetic turntable 31, there is a driven gear ring 312 coaxial with it, which ensures effective power transmission. The rotating driver 32 is composed of a servo motor 321 and a driving gear 322, wherein the servo motor 321 is firmly mounted on the inner bracket 33, ensuring its stability during operation. The driving gear 322 is coaxially fixed on the output shaft of the servo motor 321 to form an efficient drive system. The precise meshing between the driving gear 322 and the driven gear ring 312 ensures the effective transmission and conversion of power. When the servo motor 321 is started, torque can be input to the magnetic turntable 31 stably through the driving gear 322 and the driven gear ring 312.

[0051] like Figure 3 , Figure 7 and Fig.11 As shown, the polishing container 2 also includes a sliding cylinder 24 coaxially slidably arranged on the outer peripheral wall of the fixed disk 21, and the portion of the sliding cylinder 24 higher than the fixed disk 21 forms a polishing section 22 and a filtering section 23. The automatic polishing equipment also includes a transmission mechanism arranged at the bottom of the fixed disk 21, and the transmission mechanism has a triggering part that is transmission-connected to the lifting component 41, and an execution part that is transmission-connected to the bottom end of the sliding cylinder 24. When the lifting component 41 moves upward, the sliding cylinder 24 moves downward relative to the fixed disk 21.

[0052] The portion of the sliding cylinder 24 that extends beyond the fixed disk 21 forms a polishing section 22 and a filtering section 23, ensuring that the polishing and filtering functions can be switched during the polishing operation. The conduction mechanism includes a trigger portion that is transmission-connected to the lifting assembly 41, and an actuator that is transmission-connected to the bottom end of the sliding cylinder 24. When the lifting assembly 41 moves upward, the sliding cylinder 24 moves downward relative to the fixed disk 21, thereby achieving effective alternation between the polishing section 22 and the filtering section 23 and optimizing the workflow. This avoids the need for the filter container 1 to be lifted to a higher position before it can be located in the filtering section 23. When the filter container 1 rises to an appropriate height, the sliding cylinder 24 can automatically descend so that the lower part of the filter container 1 is located in the filtering section 23, thereby improving the stability of the filter container 1 during rotation.

[0053] like Figure 4 and Figure 7As shown, the triggering part includes an annular capsule 51 coaxially arranged at the bottom end of the fixed disk 21, and the bottom end of the annular capsule 51 is rotatably connected to the top end of the torque transmission ring 413. When the torque transmission ring 413 moves upward, it squeezes the annular capsule 51. The execution part includes a fixed cylinder 53 coaxially and fixedly arranged at the bottom end of the fixed disk 21, and a piston ring 241 is arranged at the bottom end of the inner circumferential wall of the sliding cylinder 24. The piston ring 241 is sealingly and slidably arranged on the outer circumferential wall of the fixed cylinder 53. A pressure chamber 25 is formed between the inner circumferential wall of the sliding cylinder 24 and the outer circumferential wall of the fixed cylinder 53. A connecting pipe 52 communicating with the pressure chamber 25 is also arranged at the top end of the annular capsule 51, and hydraulic oil is filled in the annular capsule 51 and the pressure chamber 25.

[0054] When the torque transmission ring 413 moves upward relative to the fixed disk 21, the annular capsule 51 is squeezed. The hydraulic oil in the annular capsule 51 enters the pressure chamber 25 through the connecting pipe 52. The pressure of the pressure chamber 25 increases, so that the top of the piston ring 241 is pressed downward, and then the sliding ring can be driven to move downward relative to the fixed disk 21. In this way, when the filter container 1 moves upward, the sliding ring can slide downward adaptively. At the same time, the internal volume of the annular capsule 51 is larger than the volume of the pressure chamber 25, and the rising amplitude of the torque transmission ring 413 is larger than the falling amplitude of the sliding cylinder 24.

[0055] like Figure 3 As shown, a liquid discharge port 26 is disposed at the top of the filter section 23 , and a valve 27 is disposed on the liquid discharge port 26 .

[0056] The polishing liquid and the magnetic steel needles in the polishing container 2 can be discharged through the liquid discharge port 26 to facilitate continuous polishing.

[0057] like Figure 7 As shown, the automatic polishing device also includes an outer bracket 6, which includes guide columns 61 distributed along the circumference of the fixed cylinder 53, and a connecting ear 242 is provided at the bottom end of the outer peripheral wall of the sliding cylinder 24. The guide column 61 slides longitudinally and penetrates the connecting ear 242.

[0058] The outer bracket 6 can stably support the sliding cylinder 24, and the guide column 61 slides through the connecting ear 242, so that the sliding cylinder 24 can be effectively guided by the guide column 61 when it is lifted and lowered in the longitudinal direction, thereby improving the stability of the sliding cylinder 24 during the sliding process.

[0059] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic polishing device for rivet silver contacts, characterized in that: The invention comprises a filtering container, a polishing container, a magnetic flow guide and a lifting driver, wherein the filtering container is coaxially placed in the polishing container, and a rectangular array of filtering holes is provided on the circumferential surface of the lower part of the filtering container; the polishing container comprises a fixed disk, the inner circumferential wall of the polishing section is gap-matched with the edge of the filtering container, and the inner diameter of the filtering section is larger than the inner diameter of the polishing section; the magnetic flow guide comprises a magnetic rotating disk arranged at the bottom of the fixed disk, and a rotating driver for driving the magnetic rotating disk to rotate at the bottom of the fixed disk; The lifting drive is arranged at the bottom of the fixed plate. The lifting and lifting drive has a lifting component that penetrates the fixed plate and docks with the filter container. When the lifting component lifts the filter container so that all the filter holes face the inner wall of the filter section, the lifting component is connected to the magnetic turntable, and the lifting component drives the filter container to rotate in the polishing container. The center position of the magnetic turntable is provided with a coaxial avoidance opening, the lifting assembly includes a lifting shaft that passes through the avoidance opening and coaxially slides through the fixed plate, the lifting assembly also includes a linear cylinder arranged at the bottom of the lifting shaft, the top end of the lifting shaft is provided with a docking joint, the docking joint can be engaged with the bottom end of the filter container, and a torque transmission ring is also arranged on the lifting shaft, when the torque transmission ring abuts against the bottom end of the magnetic turntable, the magnetic turntable drives the torque transmission ring to rotate coaxially; the output shaft of the linear cylinder is coaxially connected to the bottom end of the lifting shaft; The polishing container also includes a sliding cylinder coaxially slidably arranged on the outer peripheral wall of the fixed disk, and the portion of the sliding cylinder higher than the fixed disk forms a polishing section and a filtering section. The automatic polishing device also includes a transmission mechanism arranged at the bottom of the fixed disk, the transmission mechanism having a triggering part transmission-connected to the jacking assembly, and an execution part transmission-connected to the bottom end of the sliding cylinder, when the jacking assembly moves upward, the sliding cylinder moves downward relative to the fixed disk; The triggering part includes an annular capsule coaxially arranged at the bottom end of the fixed disk, the bottom end of the annular capsule is rotatably connected to the top end of the torque transmission ring, and the torque transmission ring squeezes the annular capsule when it moves upward. The executing part includes a fixed cylinder coaxially fixedly arranged at the bottom end of the fixed disk, a piston ring is arranged at the bottom end of the inner circumferential wall of the sliding cylinder, and the piston ring is sealingly slidably arranged on the outer circumferential wall of the fixed cylinder. A pressure chamber is formed between the inner circumferential wall of the sliding cylinder and the outer circumferential wall of the fixed cylinder. A connecting pipe connected to the pressure chamber is also arranged at the top end of the annular capsule, and hydraulic oil is filled in the annular capsule and the pressure chamber.

2. The automatic polishing equipment for rivet silver contacts according to claim 1 is characterized in that: The top of the torque transmission ring is provided with active tooth grooves along its circumference, and the active tooth grooves extend radially along the torque transmission ring. The bottom end of the magnetic turntable is provided with an active rack that can engage with the active tooth grooves along the longitudinal direction. When the active tooth grooves are coupled with the active rack, the magnetic turntable drives the torque transmission ring to rotate.

3. The automatic polishing equipment for rivet silver contacts according to claim 1 or 2, characterized in that: A stepped groove is arranged on the circumferential surface of the lifting shaft, and a limiting ring is also arranged on the lifting shaft at the bottom of the stepped groove. The torque transmission ring is slidably arranged between the stepped groove and the limiting ring, and an elastic reset element is also arranged between the torque transmission ring and the limiting ring, and the torque transmission ring elastically abuts against the stepped groove.

4. The automatic polishing equipment for rivet silver contacts according to claim 3 is characterized in that: The docking joint is disc-shaped, and the outer wall of the docking joint is inclined to form a conical annular surface whose outer diameter gradually decreases from bottom to top. The conical annular surface is provided with driven tooth grooves distributed along its circumference. The bottom end of the filter container is provided with a groove that can be engaged with the docking joint, and the inner circumferential wall of the groove is provided with a driven rack that can engage with the driven tooth groove along the longitudinal direction.

5. The automatic polishing equipment for rivet silver contacts according to claim 4 is characterized in that: The magnetic deflector also includes an inner bracket arranged at the bottom of the fixed disk, a fixed ring is arranged at the top of the inner bracket, the magnetic turntable is coaxially rotatably arranged in the fixed ring, and a driven gear ring coaxial with the magnetic turntable is arranged at the bottom end. The rotation driver includes a servo motor and a driving gear, the servo motor is fixedly arranged on the inner bracket, and the driving gear is coaxially fixedly arranged on the output shaft of the servo motor, and the driving gear is meshed with the driven gear ring.

6. The automatic polishing equipment for rivet silver contacts according to claim 1 is characterized in that: A liquid discharge port is arranged at the top of the filter section, and a valve is arranged on the liquid discharge port.

7. The automatic polishing equipment for rivet silver contacts according to claim 1 or 6, characterized in that: The automatic polishing device also includes an outer bracket, which includes guide columns distributed along the circumference of the fixed cylinder. The bottom end of the outer peripheral wall of the sliding cylinder is provided with a connecting ear, and the guide column slides longitudinally and penetrates the connecting ear.

Images