Upper main shaft assembly of multi-station sheet polishing machine

Abstract

The utility model provides an upper main shaft assembly of a multi-station sheet polishing machine, which comprises a main mounting frame, a lifting module arranged on the main mounting frame, a main shaft support arranged on the lifting module, a main shaft driving device arranged on the main shaft support, an auxiliary mounting frame arranged on the main shaft support, and a main shaft driving device arranged on the auxiliary mounting frame, the auxiliary installation frame comprises more than one auxiliary guide column, limiting blocks are arranged at the top ends of the auxiliary guide columns, and auxiliary guide sleeves are arranged on the auxiliary guide columns in a sliding mode. According to the scheme, the auxiliary mounting frame is arranged, the main shaft support for bearing the main shaft driving device is changed into a stable U shape from an original cantilever L shape, the main mounting frame and the main shaft support are not prone to deformation any more, the machining precision is high, the yield can be greatly increased, and the service life of the machine can also be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing equipment, in particular to an upper spindle assembly of a multi-station sheet polishing machine. Background Art

[0002] With the development of science and technology, smart phones have completely replaced old feature phones. Smart phones are currently developing in the direction of high quality. High quality not only includes the hardware configuration of the phone, but also includes the appearance and texture. Now the phone shell is basically metal or glass. Since the metal shell will shield the signal, one or two plastic edges need to be added when using the metal shell. This will make the body feel split and affect the appearance. The glass shell basically does not hinder the signal, so the shell can be made into a whole. Because the glass has a warm and jade-like feeling, the glass shell is more beautiful, and the glass can also handle glare, which is beneficial for protecting the eyes.

[0003] However, whether it is a metal shell or a glass shell, it needs to be polished during production. With the increase in mobile phone shipments, the production capacity requirements of sheet manufacturers are getting higher and higher. Therefore, manufacturers need to have efficient sheet polishing machines to increase production. Therefore, high-capacity sheet polishing machines came into being.

[0004] Sheet polishing machine is a device for surface treatment of products such as glass or ceramics. It reduces the surface roughness of the product through grinding and polishing, so that the product has a smooth and bright surface.

[0005] Typically, a polishing machine includes an upper spindle assembly and a lower spindle assembly, wherein the upper spindle assembly drives the polishing head to perform rotational motion, and the lower spindle assembly drives the product to perform rotational motion.

[0006] The patent document with application publication number CN113246000A discloses an intelligent light sweeper, including a frame and an upper disk mechanism and a lower disk mechanism respectively arranged on the frame, wherein: the lower disk mechanism includes: a turntable assembly, including a turntable, a turntable shaft connected to the turntable at one end, and a turntable gear sleeved on the other end of the turntable shaft; multiple working disk assemblies, including a working disk arranged on the turntable, a working disk shaft connected to the working disk at one end, a connecting bearing sleeved on the other end of the working disk shaft, a working disk gear sleeved on the connecting bearing and meshed with the turntable gear, and a plurality of connecting holes are provided on the working disk gear; a clutch assembly arranged at a material taking and unloading station, including a clutch sleeve sleeved on the working disk shaft, a plurality of connecting members arranged on the clutch sleeve, and a clutch member for pulling the clutch sleeve, and the clutch sleeve and the working disk gear are fixed by inserting the connecting member into the connecting hole; the upper disk mechanism includes: a plurality of polishing assemblies distributed at intervals, and the polishing assembly is located above the workpiece disk.

[0007] The upper plate mechanism also includes a Z-axis motor module and a lifting plate mounted on the mounting frame by a cantilever, and the Z-axis motor module 23 includes a motor and a linear module; the upper plate mechanism also includes a rotary drive motor, and the overall weight of the upper plate mechanism after assembly is very large. The polishing assembly structure set in this cantilever manner is unstable, and the mounting frame will deform after a period of use, resulting in reduced processing accuracy and a significant increase in the defective rate of the processed products; in addition, the solution does not set a system for supplying polishing liquid, so it is necessary to improve the existing technology to solve the problems existing in the existing technology. Summary of the invention

[0008] In order to solve the problems existing in the prior art, the utility model provides an upper spindle assembly of a multi-station sheet polishing machine. By arranging a secondary mounting frame, the main mounting frame and the spindle bracket can be effectively prevented from being deformed. By arranging a liquid supply device between the spindle bracket and the polishing head, polishing liquid is provided to the polishing head from the root of the polishing head, and the polishing liquid can more easily reach the polishing surface.

[0009] In order to achieve the above object, the technical solution of the utility model is:

[0010] An upper spindle assembly of a multi-station sheet polishing machine comprises a main mounting frame, a lifting module is arranged on the main mounting frame, a spindle bracket is arranged on the lifting module, a spindle drive device is arranged on the spindle bracket, and the spindle drive device comprises a reducer, and is characterized in that: a sub-mounting frame is also arranged on the spindle bracket, the sub-mounting frame comprises more than one auxiliary guide column, a limit block is arranged at the top end of the auxiliary guide column, and an auxiliary guide sleeve is slidably arranged on the auxiliary guide column;

[0011] The top of the main mounting frame and the auxiliary guide sleeve are both connected to the top cross frame of the multi-station sheet polishing machine;

[0012] A spindle bearing sleeve coaxial with the output end of the reducer is provided at the bottom of the spindle bracket, a spindle core is rotatably provided in the spindle bearing sleeve, and the spindle core is connected to the output end of the reducer; a polishing head is provided at the bottom of the spindle core;

[0013] A liquid supply device is arranged between the main shaft support and the polishing head. The liquid supply device comprises a flow dividing disc and one or more liquid supply pipes connecting the flow dividing disc and the polishing head.

[0014] In the above scheme, by setting up a sub-mounting frame, the spindle bracket carrying the spindle drive device is changed from the original cantilever L-shape to a stable U-shape, the main mounting frame and the spindle bracket are no longer easily deformed, the processing accuracy is high, the yield rate can be greatly improved, and the life of the machine can be effectively extended; by setting a liquid supply device between the spindle bracket and the polishing head, the polishing liquid can flow out from the diverter disc along the liquid supply pipe from the root of the polishing head, the polishing liquid can more easily reach the polishing surface where the polishing head contacts the workpiece, which can effectively improve the polishing effect.

[0015] Furthermore, the lifting module includes one or more slide rails vertically arranged on the main mounting frame, a slide rail receiving groove is arranged on the main mounting frame, and the slide rail is embedded in the slide rail receiving groove; a slider receiving groove is arranged on the spindle bracket, a slider is arranged in the slider receiving groove, and the slider cooperates with the slide rail; the lifting module also includes a lifting drive device arranged on the main mounting frame, and the movable end of the lifting drive device is connected to the spindle bracket. The slide rail and the slider are both arranged in the receiving groove, which can prevent the slide rail and the slider from displacement and improve the stability of the machine.

[0016] Furthermore, the spindle support includes a transverse support and a vertical support, the lower end of the vertical support is connected to one end of the transverse support, the reducer is arranged on the transverse support, the output end of the reducer is far away from the vertical support; the input end of the reducer is close to the vertical support. The main mounting frame is the main load-bearing end, and the input end of the reducer is used to install the drive motor. This setting can balance the force of the spindle support and make the upper spindle assembly structure stable.

[0017] Furthermore, an axial vent hole is provided at the center of the upper end of the spindle core, the axial vent hole extends to the lower end of the spindle bearing sleeve, and one or more radial vent holes communicating with the axial vent hole are provided on the spindle core; a rotary joint is provided at the top of the axial vent hole. This arrangement allows gas to be introduced into the spindle core through the rotary joint, thereby preventing polishing liquid from entering between the spindle core and the spindle bearing sleeve, and prolonging the service life of the bearing.

[0018] Furthermore, a deep groove ball bearing is provided at each end of the main shaft bearing sleeve, a one-way thrust ball bearing is provided between the two deep groove ball bearings, and an oil seal is provided between the deep groove ball bearing at the bottom and the radial vent hole. This arrangement can improve the bearing capacity of the main shaft bearing sleeve and the stability of the main shaft core during operation.

[0019] Furthermore, a spindle turntable is provided at the bottom of the spindle core, and a polishing head is provided at the bottom of the spindle turntable; the polishing head is connected to the spindle turntable through more than three right-angle locks. The spindle turntable can facilitate the installation of a liquid supply pipe and a polishing head.

[0020] Furthermore, a water retaining ring is provided on the outer circumference of the spindle turntable, and a water retaining ring surrounding the polishing head is provided on the water retaining ring, and the lower end of the water retaining ring is lower than the lower end of the polishing head. The water retaining ring can be easily installed, and the water retaining ring can prevent the polishing liquid from being thrown out.

[0021] Furthermore, the lifting drive device is a cylinder, the cylinder body of the cylinder is mounted on the main mounting frame, and the piston rod of the cylinder is connected to the main shaft bracket. The cylinder has a simple structure, low cost, and is easy to install and replace.

[0022] Furthermore, the polishing head is a brush; and the water retaining ring is a silicone water retaining ring.

[0023] Furthermore, the number of the auxiliary guide pillars is two, and the limit blocks at the top ends of the auxiliary guide pillars are connected into a whole. The two auxiliary guide pillars are arranged at two corners of the transverse support, so that the main shaft support is subjected to balanced force and the structure is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model disposed on a sheet polishing machine;

[0025] Figure 2 It is a schematic diagram of the structure of the utility model;

[0026] Figure 3 It is a top view of the utility model;

[0027] Figure 4 for Figure 3 Middle CC section view. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] like Figures 1 to 4 As shown, the upper spindle assembly 3 includes a main mounting frame 30 disposed on a top cross frame 103 of the polishing machine.

[0030] like Figure 2 As shown, a lifting module 31 is provided on the main mounting frame 30 , and a main shaft support 32 is provided on the lifting module 31 .

[0031] In this embodiment, the lifting module 31 includes one or more slide rails 311 vertically arranged on the main mounting frame 30, and a slide rail accommodating groove is provided on the main mounting frame 30, and the slide rail 311 is embedded in the slide rail accommodating groove; a slider accommodating groove is provided on the main shaft support 32, and a slider 312 is provided in the slider accommodating groove, and the slider 312 cooperates with the slide rail 311; the lifting module 31 also includes a lifting drive device 313 arranged on the main mounting frame 30, and the movable end of the lifting drive device 313 is connected to the main shaft support 32.

[0032] In this embodiment, there are two slide rails 311 and four sliders 312. Two sliders 312 are arranged on one slide rail 311; and the lifting drive device 313 is a cylinder.

[0033] The spindle support 32 includes a transverse support 320 and a vertical support 321 . The lower end of the vertical support 321 is connected to one end of the transverse support 320 . An L-shaped reinforcing plate 322 is provided between the transverse support 320 and the vertical support 321 .

[0034] A spindle driving device 33 is provided on the spindle support 32 . The spindle driving device 33 includes a reducer 330 and a lifting driving motor 331 for driving the reducer 330 to rotate.

[0035] In this embodiment, the reducer 330 is disposed on the horizontal bracket 320 , and the output end of the reducer 330 is far away from the vertical bracket 321 ; the input end of the reducer 330 is close to the vertical bracket 321 .

[0036] A sub-mounting frame 34 is also provided on the spindle support 32 . The sub-mounting frame 34 includes one or more auxiliary guide columns 341 . In the present embodiment, there are two auxiliary guide columns 341 . Limiting blocks 342 are fixedly provided at the top ends of the two auxiliary guide columns 341 .

[0037] like Figure 1 and Figure 2 As shown, an auxiliary guide sleeve 343 is slidably provided on the auxiliary guide column 341 .

[0038] In this embodiment, the auxiliary guide sleeve 343 is connected via a guide sleeve fixing plate 345 , and both ends of the guide sleeve fixing plate 345 are firmly welded to the top cross frame 103 .

[0039] The length of the auxiliary guide column 341 is calculated. When the spindle bracket 32 ​​descends, the auxiliary guide sleeve 343 supports the limit block 342, and the auxiliary guide column 341 pulls one end of the horizontal bracket 320 away from the vertical bracket 321 to form a stable structure, thereby preventing the cantilever structure of the spindle bracket 32 ​​from deforming, thereby improving the processing accuracy and the service life of the machine.

[0040] like Figure 2 and Figure 4 As shown, a spindle bearing sleeve 350 coaxial with the output end of the reducer 330 is provided at the bottom of the spindle support 32 .

[0041] A deep groove ball bearing is provided at each end of the main shaft bearing sleeve 350, and a one-way thrust ball bearing is provided between the two deep groove ball bearings. A main shaft core 351 is rotatably provided in the main shaft bearing sleeve 350, and the main shaft core 351 is connected to the output end of the reducer 330; a polishing head 36 is provided at the bottom of the main shaft core 351.

[0042] In this embodiment, Figure 4 As shown, the polishing head 36 includes a spindle turntable 360 ​​connected to the bottom of the spindle shaft core 351 and a brush 361 arranged at the bottom of the spindle turntable 360. The brush 361 is connected to the spindle turntable 360 ​​through more than three right-angle locks 362. The rotation of the spindle shaft core 351 drives the brush 361 to rotate.

[0043] An axial air vent 352 is provided at the center of the upper end of the spindle core 351. The axial air vent 352 extends to the lower part of the spindle bearing sleeve 350 but does not penetrate the lower part of the spindle bearing sleeve 350. There is also one or more radial air vents 353 in communication with the axial air vent 352 on the spindle core 351. The radial air vents 353 lead to between the spindle bearing sleeve 350 and the spindle core 351; a rotary joint is provided at the top of the axial air vent 352; and an oil seal is also provided between the deep groove ball bearing at the bottom and the radial air vent 353.

[0044] By introducing compressed air into the axial vent hole 352 through the rotary joint, the grinding fluid can be effectively prevented from entering between the spindle bearing sleeve 350 and the spindle shaft core 351, thereby preventing rust and effectively extending the service life of the machine.

[0045] like Figure 4 As shown, a liquid supply device is provided between the spindle support 32 and the brush 361, and the liquid supply device includes a diverter disc 370 and one or more liquid supply pipes 371 connecting the diverter disc 370 and the brush 361. Abrasive liquid is injected into the diverter disc 370 through a water pipe, and the abrasive liquid can flow into the bristles of the brush 361 through the liquid supply pipe 371 to polish the workpiece.

[0046] like Figure 2 and Figure 4 As shown, a water retaining ring 364 is provided on the outer circumference of the spindle turntable 360, and a water retaining ring 363 surrounding the polishing head 36 is provided on the water retaining ring 364, and the lower end of the water retaining ring 363 is lower than the lower end of the polishing head 36. In this embodiment, the water retaining ring 363 is a silicone water retaining ring.

[0047] The solution can effectively solve the problems of poor structural stability of the upper spindle assembly of the polishing machine in the prior art, poor stability of the working disc assembly, and easy deformation of the polishing assembly.

Claims

1. An upper spindle assembly of a multi-station sheet polishing machine, comprising a main mounting frame, a lifting module is arranged on the main mounting frame, a spindle bracket is arranged on the lifting module, a spindle drive device is arranged on the spindle bracket, and the spindle drive device includes a reducer, characterized in that: A secondary mounting frame is also provided on the main shaft support, and the secondary mounting frame includes one or more auxiliary guide columns, a limit block is provided at the top end of the auxiliary guide column, and an auxiliary guide sleeve is slidably provided on the auxiliary guide column; The top of the main mounting frame and the auxiliary guide sleeve are both connected to the top cross frame of the multi-station sheet polishing machine; A spindle bearing sleeve coaxial with the output end of the reducer is provided at the bottom of the spindle bracket, a spindle core is rotatably provided in the spindle bearing sleeve, and the spindle core is connected to the output end of the reducer; a polishing head is provided at the bottom of the spindle core; A liquid supply device is arranged between the main shaft support and the polishing head. The liquid supply device comprises a flow dividing disc and one or more liquid supply pipes connecting the flow dividing disc and the polishing head.

2. The upper spindle assembly of the multi-station sheet polishing machine according to claim 1 is characterized in that: The lifting module includes one or more slide rails vertically arranged on the main mounting frame, and a slide rail accommodating groove is provided on the main mounting frame, and the slide rail is embedded in the slide rail accommodating groove; a slider accommodating groove is provided on the main shaft bracket, and a slider is provided in the slider accommodating groove, and the slider cooperates with the slide rail; the lifting module also includes a lifting drive device arranged on the main mounting frame, and the movable end of the lifting drive device is connected to the main shaft bracket.

3. The upper spindle assembly of the multi-station sheet polishing machine according to claim 1 is characterized in that: The main shaft support includes a horizontal support and a vertical support. The lower end of the vertical support is connected to one end of the horizontal support. The reducer is arranged on the horizontal support. The output end of the reducer is far away from the vertical support; the input end of the reducer is close to the vertical support.

4. The upper spindle assembly of the multi-station sheet polishing machine according to claim 1 is characterized in that: An axial vent hole is provided at the center of the upper end of the spindle shaft core, and the axial vent hole extends to the lower end of the spindle bearing sleeve. There are more than one radial vent hole connected to the axial vent hole on the spindle shaft core; a rotary joint is provided at the top of the axial vent hole.

5. The upper spindle assembly of the multi-station sheet polishing machine according to claim 4, characterized in that: A deep groove ball bearing is provided at each end of the main shaft bearing sleeve, and a one-way thrust ball bearing is provided between the two deep groove ball bearings; an oil seal is provided between the deep groove ball bearing at the bottom and the radial vent hole.

6. The upper spindle assembly of the multi-station sheet polishing machine according to claim 1, characterized in that: A spindle turntable is arranged at the bottom of the spindle shaft core, and a polishing head is arranged at the bottom of the spindle turntable; the polishing head is connected with the spindle turntable through more than three right-angle lock buckles.

7. The upper spindle assembly of the multi-station sheet polishing machine according to claim 6, characterized in that: A water retaining ring is arranged on the outer circumference of the main shaft rotating disk, a water retaining ring surrounding the polishing head is arranged on the water retaining ring, and the lower end of the water retaining ring is lower than the lower end of the polishing head.

8. The upper spindle assembly of the multi-station sheet polishing machine according to claim 2, characterized in that: The lifting drive device is a cylinder, the cylinder body of the cylinder is installed on the main mounting frame, and the piston rod of the cylinder is connected to the main shaft bracket.

9. The upper spindle assembly of the multi-station sheet polishing machine according to claim 7, characterized in that: The polishing head is a brush; the water retaining ring is a silicone water retaining ring.

10. The upper spindle assembly of the multi-station sheet polishing machine according to claim 1, characterized in that: The number of the auxiliary guide posts is two, and the two auxiliary guide posts are connected into a whole through a limiting block at the top.

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