Double station polishing machine

Abstract

The invention discloses a double-station polishing machine, comprising a frame, a traverse driving group, a lifting driving group, a double-station pressure balancing device and a polishing group, wherein the double-station pressure balancing device comprises a fixed machine base, a lifting machine base, a balanced lifting mechanism, a pair of pressure sensors and a pair of clamping fixtures, wherein the balanced lifting mechanism is mounted on the fixed machine base, the lifting machine base is mounted on the balanced lifting mechanism, a pair of pressure sensors are mounted on the fixed machine base and the lifting machine base respectively, a pair of clamping fixtures are mounted on the pair of pressure sensors respectively, a pair of pressure sensors and the lifting mechanism are connected by signals, the traverse driving group is mounted on the frame, the fixed machine base is connected to the traverse driving group, the lifting driving group is mounted on the frame, and the polishing group is connected to the lifting driving group. The double-station polishing machine has the advantages of simple and reliable structure, can realize the balance of double-station polishing force, and can improve product quality.

Description

Technical Field

[0001] The invention mainly relates to the technical field of polishing machines, and in particular to a double-station polishing machine. Background Art

[0002] With the continuous popularization and upgrading of electronic products, the demand for glass display screens is increasing, and the quality requirements are getting higher and higher. Therefore, the glass grinding and polishing process has also developed rapidly, and higher requirements have been put forward for polishing machines. In order to improve the polishing efficiency, the glass shells of 3C products such as mobile phones are generally processed by single-station, double-station or multi-station polishing machines.

[0003] Single-station polishing has low efficiency because it only processes one workpiece. Multi-station polishing can polish multiple workpieces at the same time, which is highly efficient. However, the workpieces at each station need to be polished consistently, which is difficult, especially for high-end 3C products. However, two-station polishing equipment takes into account both efficiency and consistency, so it is deeply loved by factories.

[0004] The current double-station polishing machine has two workpiece parts that are polished. When polishing, the two workpiece parts move with the overall movement of the equipment workbench at the same time. The two tooling discs are driven by a reduction motor or two reduction motors to rotate separately. Due to the accumulation of assembly errors and the thickness tolerance of consumables, the workpiece parts on the two tooling discs are polished at different forces, resulting in unbalanced polishing on both sides, resulting in inconsistent products. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a double-station polishing machine which has a simple and reliable structure, can achieve double-station polishing force balance, and can improve product quality.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A double-station polishing machine comprises a frame, a transverse driving group, a lifting driving group, a double-station pressure balancing device and a polishing group. The double-station pressure balancing device comprises a fixed machine base, a lifting machine base, a balanced lifting mechanism, a pair of pressure sensors and a pair of clamping fixtures. The balanced lifting mechanism is installed on the fixed machine base, and the lifting machine base is installed on the balanced lifting mechanism. A pair of pressure sensors are respectively installed on the fixed machine base and the lifting machine base. A pair of clamping fixtures are respectively installed on a pair of pressure sensors. A pair of pressure sensors and the lifting mechanism are connected by signals. The transverse driving group is installed on the frame, the fixed machine base is connected to the transverse driving group, the lifting driving group is installed on the frame, and the polishing group is connected to the lifting driving group.

[0008] As a further improvement of the above technical solution:

[0009] The balanced lifting mechanism includes a balanced lifting servo motor, a balanced transmission screw and a lifting block. The balanced lifting servo motor is fixedly mounted on a fixed base, the balanced transmission screw is connected to the output end of the balanced lifting servo motor, the lifting block is threadedly connected to the balanced transmission screw, and the lifting base is installed on the lifting block.

[0010] A vertical guide rail is installed on the fixed machine base, and the lifting machine base is slidably connected with the vertical guide rail.

[0011] The clamping tool comprises a support member and a clamp, wherein the support member is mounted on a corresponding pressure sensor, and the clamp is mounted on a corresponding support member.

[0012] The support member comprises a rotary driving member and a turntable, the rotary driving member is mounted on the corresponding pressure sensor, the turntable is connected to the output end of the corresponding rotary driving member, and the clamp is mounted on the corresponding turntable.

[0013] The rotary drive member includes a rotary servo motor and a cam divider, the cam divider is mounted on a corresponding pressure sensor, the rotary servo motor is connected to an input shaft of the corresponding cam divider, and the turntable is mounted on an output shaft of the corresponding cam divider.

[0014] The polishing group includes a lifting frame, a spindle box, an axis-changing drive and a pair of polishing heads. The lifting frame is connected to the lifting drive group, the spindle box is installed on the lifting frame, the pair of polishing heads are respectively installed on opposite sides of the spindle box, and the axis-changing drive is installed on the lifting frame and connected to the spindle box.

[0015] The shaft-changing drive component includes a shaft-changing servo motor, a reducer and a switching shaft. The reducer is installed on a lifting frame, the output end of the shaft-changing servo motor is connected to the reducer, the switching shaft is installed at the output end of the reducer, and the switching shaft is connected to the spindle box.

[0016] The transverse driving group includes a base, a transverse guide rail and a transverse driving motor. The base is fixed on the frame, the transverse guide rail is fixed on the base, the pressure balancing device is slidably mounted on the transverse guide rail, and the transverse driving motor is fixed on the frame and connected to the pressure balancing device.

[0017] The lifting drive group includes a lifting motor and a lifting screw rod. The lifting motor is installed on a frame. The lifting screw rod is installed at the output end of the lifting motor and connected to the polishing group.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The double-station polishing machine of the present invention, when the polishing machine is working, the workpieces on the two clamping fixtures are polished and ground by the polishing disc. At this time, the two pressure sensors will obtain a set of pressure data. Since the pressure sensor on the fixed machine base is fixed, the obtained data can be compared with the data in the system library. The system can debug the polishing disc to control the force applied to the fixed clamping fixture. Therefore, the data of the pressure sensor on the lifting machine base will be compared with the data of the pressure sensor on the fixed machine base. When a deviation is found, the balancing lifting mechanism will drive the lifting machine base to drive the corresponding clamping fixture to lift and lower, thereby achieving consistent force on the workpieces on the two clamping fixtures, achieving balanced polishing force on both sides, and achieving consistent workpiece processing. The structure is simple and reliable, and the product quality is improved. The transverse driving group can realize the adjustment of the workpiece in the X-axis direction, and the lifting driving group can realize the adjustment of the polishing group in the Y-axis direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the double-station polishing machine of the present invention.

[0021] Figure 2 It is a side structural schematic diagram of the double-station polishing machine of the present invention.

[0022] Figure 3 It is a structural schematic diagram of a pressure balancing device in a double-station polishing machine of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the polishing group in the double-station polishing machine of the present invention.

[0024] The symbols in the figure represent:

[0025] 1. Frame; 2. Transverse drive group; 21. Base; 22. Transverse guide rail; 23. Transverse drive motor; 3. Lifting drive group; 31. Lifting motor; 32. Lifting screw; 4. Pressure balancing device; 41. Fixed base; 411. Vertical guide rail; 42. Lifting base; 43. Lifting mechanism; 431. Balanced lifting servo motor; 432. Balanced transmission screw; 433. Lifting block; 44. Pressure sensor; 45. Clamping tool; 451. Support; 4511. Rotating drive member; 45111. Rotating servo motor; 45112. Cam divider; 4512. Turntable; 452. Fixture; 5. Polishing group; 51. Lifting frame; 52. Spindle box; 53. Shaft-changing drive member; 531. Shaft-changing servo motor; 532. Reducer; 533. Switching shaft; 54. Polishing head. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figures 1 to 4An embodiment of a double-station polishing machine of the present invention is shown, comprising a frame 1, a transverse driving group 2, a lifting driving group 3, a double-station pressure balancing device 4 and a polishing group 5. The double-station pressure balancing device 4 comprises a fixed machine base 41, a lifting machine base 42, a balanced lifting mechanism 43, a pair of pressure sensors 44 and a pair of clamping fixtures 45. The balanced lifting mechanism 43 is installed on the fixed machine base 41, the lifting machine base 42 is installed on the balanced lifting mechanism 43, a pair of pressure sensors 44 are respectively installed on the fixed machine base 41 and the lifting machine base 42, a pair of clamping fixtures 45 are respectively installed on the pair of pressure sensors 44, the pair of pressure sensors 44 and the lifting mechanism 43 are connected by signals, the transverse driving group 2 is installed on the frame 1, the fixed machine base 41 is connected to the transverse driving group 2, the lifting driving group 3 is installed on the frame 1, and the polishing group 5 is connected to the lifting driving group 3. When the polishing machine is working, the workpieces on the two clamping fixtures 45 are polished and ground by the polishing disc. At this time, the two pressure sensors 44 will obtain a set of pressure data. Since the pressure sensor 44 on the fixed machine base 41 is fixed, the data obtained can be compared with the data in the system library. The system can debug the polishing disc to control the force applied to the fixed clamping fixture 45. Therefore, the data of the pressure sensor 44 on the lifting machine base 42 will be compared with the data of the pressure sensor 44 on the fixed machine base 41. When a deviation is found, the balancing lifting mechanism 43 will drive the lifting machine base 42 to drive the corresponding clamping fixture 45 to rise and fall, so as to achieve consistent force on the workpieces on the two clamping fixtures 45, achieve balanced polishing force on both sides, and achieve consistent workpiece processing. Its structure is simple and reliable, and improves product quality; the transverse driving group 2 can realize the adjustment of the workpiece in the X-axis direction, and the lifting driving group 3 can realize the adjustment of the polishing group 5 in the Y-axis direction.

[0028] In this embodiment, the balance lifting mechanism 43 includes a balance lifting servo motor 431, a balance transmission screw 432 and a lifting block 433. The balance lifting servo motor 431 is fixedly mounted on the fixed base 41, the balance transmission screw 432 is connected to the output end of the balance lifting servo motor 431, the lifting block 433 is threadedly connected to the balance transmission screw 432, and the lifting base 42 is installed on the lifting block 433. In this structure, the balance lifting servo motor 431 drives the balance transmission screw 432 to rotate after receiving a signal, and the lifting block 433 will rise and fall on the balance transmission screw 432, thereby driving the lifting base 42 to rise and fall, and finally driving the corresponding clamping tooling 45 to rise and fall.

[0029] In this embodiment, a vertical guide rail 411 is installed on the fixed machine base 41, and the lifting machine base 42 is slidably connected with the vertical guide rail 411. The vertical guide rail 411 is provided to guide and constrain the lifting machine base 42, thereby ensuring the smoothness and stability of lifting.

[0030] In this embodiment, the clamping tool 45 includes a support member 451 and a clamp 452. The support member 451 is mounted on the corresponding pressure sensor 44, and the clamp 452 is mounted on the corresponding support member 451. In this structure, the support member 451 provides an installation and support basis for the clamp 452, and the clamp 452 is used to clamp the workpiece.

[0031] In this embodiment, the support member 451 includes a rotary drive member 4511 and a turntable 4512. The rotary drive member 4511 is mounted on the corresponding pressure sensor 44. The turntable 4512 is connected to the output end of the corresponding rotary drive member 4511. The fixture 452 is mounted on the corresponding turntable 4512. In this structure, the rotary drive member 4511 can drive the turntable 4512 to rotate, thereby realizing the rotation of the workpiece and ensuring the polishing quality.

[0032] In this embodiment, the rotary drive member 4511 includes a rotary servo motor 45111 and a cam divider 45112. The cam divider 45112 is mounted on the corresponding pressure sensor 44. The rotary servo motor 45111 is connected to the input shaft of the corresponding cam divider 45112. The rotary disk 4512 is mounted on the output shaft of the corresponding cam divider 45112. In this structure, the cam divider 45112 ensures the rotation of the rotary disk 4512 on the one hand, and strengthens the rigidity of the overall structure on the other hand.

[0033] In this embodiment, the polishing group 5 includes a lifting frame 51, a spindle box 52, an axis-changing driving member 53 and a pair of polishing heads 54. The lifting frame 51 is connected to the lifting driving group 3, the spindle box 52 is installed on the lifting frame 51, the pair of polishing heads 54 are respectively installed on opposite sides of the spindle box 52, and the axis-changing driving member 53 is installed on the lifting frame 51 and connected to the spindle box 52. In this structure, the spindle box 52 is driven to rotate by the axis-changing driving member 53, thereby realizing the switching of the pair of polishing heads 54; the lifting driving group 3 will drive the lifting frame 51 to rise and fall, thereby realizing the adjustment in the Y-axis direction.

[0034] In this embodiment, the shaft-changing driving member 53 includes a shaft-changing servo motor 531, a reducer 532 and a switching shaft 533. The reducer 532 is installed on the lifting frame 51. The output end of the shaft-changing servo motor 531 is connected to the reducer 532. The switching shaft 533 is installed at the output end of the reducer 532 and connected to the spindle box 52. The structure is simple and reliable.

[0035] In this embodiment, the transverse driving group 2 includes a base 21, a transverse guide rail 22 and a transverse driving motor 23. The base 21 is fixedly mounted on the frame 1, the transverse guide rail 22 is fixedly mounted on the base 21, the pressure balancing device 4 is slidably mounted on the transverse guide rail 22, and the transverse driving motor 23 is fixedly mounted on the frame 1 and connected to the pressure balancing device 4. In this structure, the transverse driving motor 23 drives the pressure balancing device 4 to move along the transverse guide rail 22, thereby realizing adjustment in the X-axis direction.

[0036] In this embodiment, the lifting drive group 3 includes a lifting motor 31 and a lifting screw 32. The lifting motor 31 is installed on the frame 1, and the lifting screw 32 is installed at the output end of the lifting motor 31 and connected to the polishing group 5. In this structure, the lifting motor 31 drives the lifting screw 32 to rotate, and the polishing group 5 rises and falls along the lifting screw 32, thereby achieving adjustment in the Y-axis direction.

[0037] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A double-station polishing machine, characterized in that: The invention comprises a machine frame (1), a traverse drive group (2), a lifting drive group (3), a double-station pressure balancing device (4) and a polishing group (5); the double-station pressure balancing device (4) comprises a fixed machine base (41), a lifting machine base (42), a balancing lifting mechanism (43), a pair of pressure sensors (44) and a pair of clamping fixtures (45); the balancing lifting mechanism (43) is mounted on the fixed machine base (41); the lifting machine base (42) is mounted on the balancing lifting mechanism (43); the pair of pressure sensors (44) are respectively mounted on the fixed machine base (41) and the lifting machine base (42); the pair of clamping fixtures (45) are respectively mounted on the pair of pressure sensors (44); the pair of pressure sensors (44) and the lifting mechanism (43) are connected via signals; the traverse drive group (2), a lifting drive group (3), a double-station pressure balancing device (4) and a polishing group (5); the double-station pressure balancing device (4) comprises a fixed machine base (41), a lifting machine base (42), a balancing lifting mechanism (43), a pair of pressure sensors (44) and a pair of clamping fixtures (45); the balancing lifting mechanism (43) is mounted on the fixed machine base (41); the lifting machine base (42) is mounted on the balancing lifting mechanism (43); the pair of pressure sensors (44) are respectively mounted on the fixed machine base (41) and the lifting machine base (42); the pair of pressure sensors (44) and the lifting mechanism (43) are respectively connected via signals; The drive group (2) is installed on the frame (1), the fixed machine base (41) is connected to the transverse drive group (2), the lifting drive group (3) is installed on the frame (1), and the polishing group (5) is connected to the lifting drive group (3). The workpieces on the two clamping fixtures (45) are polished and ground by the polishing disc. At this time, the two pressure sensors (44) will obtain a set of pressure data, and the obtained data can be compared with the data in the system library. The system debugs the polishing disc to control the force applied to the fixed clamping fixture (45). The data of the pressure sensor (44) on the lifting machine base (42) is compared with the data of the pressure sensor (44) on the fixed machine base (41). When a deviation is found, the balancing lifting mechanism (43) will drive the lifting machine base (42) to drive the corresponding clamping fixture (45) to rise and fall.

2. The double-station polishing machine according to claim 1, characterized in that: The balancing lifting mechanism (43) comprises a balancing lifting servo motor (431), a balancing transmission screw (432) and a lifting block (433); the balancing lifting servo motor (431) is fixedly mounted on a fixed base (41); the balancing transmission screw (432) is connected to an output end of the balancing lifting servo motor (431); the lifting block (433) is threadedly connected to the balancing transmission screw (432); and the lifting base (42) is mounted on the lifting block (433).

3. The double-station polishing machine according to claim 2 is characterized in that: A vertical guide rail (411) is installed on the fixed machine base (41), and the lifting machine base (42) is slidably connected to the vertical guide rail (411).

4. The double-station polishing machine according to any one of claims 1 to 3, characterized in that: The clamping tool (45) comprises a support member (451) and a clamp (452); the support member (451) is mounted on a corresponding pressure sensor (44); and the clamp (452) is mounted on a corresponding support member (451).

5. The double-station polishing machine according to claim 4 is characterized in that: The support member (451) comprises a rotary drive member (4511) and a turntable (4512); the rotary drive member (4511) is mounted on a corresponding pressure sensor (44); the turntable (4512) is connected to an output end of the corresponding rotary drive member (4511); and the clamp (452) is mounted on the corresponding turntable (4512).

6. The double-station polishing machine according to claim 5, characterized in that: The rotary drive member (4511) comprises a rotary servo motor (45111) and a cam divider (45112); the cam divider (45112) is mounted on a corresponding pressure sensor (44); the rotary servo motor (45111) is connected to an input shaft of the corresponding cam divider (45112); and the rotary disk (4512) is mounted on an output shaft of the corresponding cam divider (45112).

7. The double-station polishing machine according to any one of claims 1 to 3, characterized in that: The polishing group (5) comprises a lifting frame (51), a spindle box (52), an axis-changing driving member (53) and a pair of polishing heads (54); the lifting frame (51) is connected to the lifting driving group (3); the spindle box (52) is mounted on the lifting frame (51); the pair of polishing heads (54) are respectively mounted on opposite sides of the spindle box (52); and the axis-changing driving member (53) is mounted on the lifting frame (51) and connected to the spindle box (52).

8. The double-station polishing machine according to claim 7, characterized in that: The shaft-changing driving member (53) comprises a shaft-changing servo motor (531), a reducer (532) and a switching rotating shaft (533); the reducer (532) is mounted on the lifting frame (51); the output end of the shaft-changing servo motor (531) is connected to the reducer (532); the switching rotating shaft (533) is mounted on the output end of the reducer (532); and the switching rotating shaft (533) is connected to the spindle box (52).

9. The double-station polishing machine according to any one of claims 1 to 3, characterized in that: The transverse drive group (2) comprises a base (21), a transverse guide rail (22) and a transverse drive motor (23); the base (21) is fixedly mounted on the frame (1); the transverse guide rail (22) is fixedly mounted on the base (21); the pressure balancing device (4) is slidably mounted on the transverse guide rail (22); and the transverse drive motor (23) is fixedly mounted on the frame (1) and connected to the pressure balancing device (4).

10. The double-station polishing machine according to any one of claims 1 to 3, characterized in that: The lifting drive group (3) comprises a lifting motor (31) and a lifting screw (32); the lifting motor (31) is mounted on the frame (1); and the lifting screw (32) is mounted on the output end of the lifting motor (31) and connected to the polishing group (5).

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