Cell phone cover plate hole forming apparatus

Abstract

The application discloses a mobile phone cover plate hole forming device and relates to the technical field of cover plate punching. The device comprises a rack, and a conveying device is assembled on the outer side wall of the rack. The conveying device comprises an annular fixing cylinder fixedly installed on the outer wall of the rack. The fixing cylinder is sequentially provided with an inlet end, a hole forming end and an outlet end in the counterclockwise direction. A cover plate is elastically assembled in the inlet end. A conveying cylinder is rotatably installed on the inner wall of the fixing cylinder. The conveying cylinder is fixedly connected with the output shaft outer wall of a first motor fixedly installed in the rack. A conveying groove is formed in the outer side wall of the conveying cylinder. The device further comprises a punching assembly. The punching assembly comprises an electric push rod. An extrusion plate is fixedly installed on the output end of the electric push rod and is matched with a positioning plate slidably installed on the inner wall of the hole forming end. A sliding block is slidably arranged on the outer side wall of the positioning plate. A punching head is elastically penetrated in the sliding block. The device is convenient for punching a batch of mobile phone cover plates. The device changes the traditional single punching mode of a single mobile phone cover plate and greatly improves the punching efficiency.

Description

Technical Field

[0001] This invention relates to the field of cover plate drilling technology, and more particularly to equipment for drilling holes in mobile phone cover plates. Background Technology

[0002] A phone cover, also known as a phone case or protective cover, is a device used to protect the appearance of a mobile phone and extend its lifespan. They are typically made of materials such as plastic, silicone, leather, or metal and are fixed to the phone's outer casing. The main function of a phone cover is to prevent the phone from being scratched and worn, and it can also protect against damage from drops or impacts to some extent. Since mobile phones commonly have camera holes and sensor holes arranged in a straight line, the matching parts need to be drilled using hole-forming equipment during the cover's manufacturing process.

[0003] However, existing hole-making equipment usually places a single cover plate under the hole-making equipment and uses a single drilling head to make holes. When it is necessary to make two holes of different sizes on a line to match the camera hole and sensor hole of the mobile phone in batches, it is necessary to use the hole-making equipment to make one hole first and then make another hole. This process wastes a lot of manpower and significantly reduces the efficiency of hole-making on mobile phone cover plates.

[0004] Therefore, a device for creating holes in mobile phone cover plates is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of cumbersome operation and reduced drilling efficiency when drilling two holes of different sizes on a single line to match the camera hole and sensor hole of a mobile phone in batches. The invention proposes a hole-forming device for mobile phone cover plates.

[0006] To achieve the above objectives, the present invention employs the following technology: a mobile phone cover plate drilling device, comprising a frame, a conveying device mounted on the outer wall of the frame, the conveying device comprising an annular fixed cylinder fixedly mounted on the outer wall of the frame, the fixed cylinder having a feeding end, a drilling end and a discharging end sequentially opened in a counterclockwise direction, a cover plate elastically mounted inside the feeding end, a conveying cylinder rotatably mounted on the inner wall of the fixed cylinder, the conveying cylinder being fixedly connected to the outer wall of the output shaft of a first motor fixedly mounted inside the frame, and a plurality of conveying grooves opened on the outer wall of the conveying cylinder; further comprising a drilling assembly mounted inside the drilling end, the drilling assembly comprising an electric push rod fixedly mounted on a high point of the frame, an extrusion plate fixedly mounted on the output end of the electric push rod and matching a positioning plate slidably mounted on the inner wall of the drilling end, two sliders capable of precise distance adjustment sliding on the outer wall of the positioning plate, the drilling head being elastically penetrated inside the sliders;

[0007] It also includes a grinding assembly mounted on the outer wall of the fixed cylinder. The cover plate is driven by the first motor to rotate the conveyor cylinder and enter the conveyor groove. It stops at the hole-forming end and uses a punching head to make two holes of different diameters in a straight line. The cover plate rotates with the conveyor cylinder and is ground by the grinding disc included in the grinding assembly. Finally, it is discharged through the discharge end.

[0008] As a further description of the aforementioned mobile phone cover plate hole-forming equipment:

[0009] The conveying device also includes a storage plate slidably inserted into the inner wall of the feed end. A compression spring is fixedly installed inside the storage plate, and the cover plate compresses and stores the compression spring inside the storage plate. The punching assembly also includes a groove formed inside the positioning plate that matches the slider. The upper surface of the positioning plate is marked with scale lines. A return spring is fixedly installed between the punching head and the slider. A bolt threaded through one side of the slider and connected to the positioning plate is threaded through it. Both sides of the bottom of the positioning plate are chamfered.

[0010] As a further description of the aforementioned mobile phone cover plate hole-forming equipment:

[0011] The grinding assembly includes an arc-shaped chamber formed outside the fixed cylinder. A cam is rotatably mounted inside the arc-shaped chamber via a rotating shaft. A torsion spring is installed between the cam and the arc-shaped chamber to return the cam to its original position. The distance between the highest point of the cam and the conveyor cylinder is greater than the distances between the feed end and the hole-forming end and the conveyor cylinder, respectively. The grinding assembly also includes a second motor fixedly mounted on the inner wall of the frame. The power output shaft of the second motor is fixedly connected to a grinding disc, one side of which is in close contact with the inner wall of the conveyor cylinder.

[0012] An extrusion rod matching the cam is fixedly installed on the outer wall of the conveyor cylinder. The grinding assembly also includes a feed cylinder sleeved outside the first motor and fixedly connected to the inner wall of the frame. An impeller is fixedly installed on the outer wall of the power output shaft of the first motor, and a guide plate extending to the bottom of the grinding disc is fixedly installed on one side of the feed cylinder.

[0013] In summary, due to the adoption of the above-mentioned technology in the mobile phone cover plate hole-forming equipment, the beneficial effects of this invention are:

[0014] By placing a batch of phone cover plates at the feeding end, the first motor in the conveying device drives the conveyor cylinder to rotate, transferring the phone cover plates into the conveyor groove to the drilling end. The electric push rod in the drilling assembly squeezes two pre-adjusted drilling heads, allowing the drilling heads to drill holes in the phone cover plates. This is more convenient for drilling a batch of phone cover plates, changing the traditional method of drilling a single phone cover plate at a time, and greatly improving drilling efficiency. In addition, as the conveyor cylinder continues to rotate, it can carry the phone cover plates to the grinding position of the grinding assembly. The second motor drives the grinding disc to grind the protrusions generated at the drilling position of the phone cover plate, making the hole result of the phone cover plate more aesthetically pleasing. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown;

[0016] Figure 2 A schematic diagram of a fixed cylinder structure provided according to an embodiment of the present invention is shown;

[0017] Figure 3 A front view of an electric actuator structure provided according to an embodiment of the present invention is shown;

[0018] Figure 4 A schematic diagram of a cam structure provided according to an embodiment of the present invention is shown;

[0019] Figure 5 A partial sectional view of the conveyor cylinder structure provided according to an embodiment of the present invention is shown;

[0020] Figure 6 A schematic diagram of a grinding disc structure provided according to an embodiment of the present invention is shown;

[0021] Figure 7 A schematic diagram of a guide plate structure provided according to an embodiment of the present invention is shown;

[0022] Figure 8 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of the structure at point A;

[0023] Figure 9 A schematic diagram of a storage board structure provided according to an embodiment of the present invention is shown.

[0024] Legend:

[0025] frame;

[0026] Conveying device; 21. Fixed cylinder; 22. Feeding end; 23. First motor; 24. Conveying trough; 25. Storage plate; 26. Hole forming end; 27. Conveying cylinder; 28. Discharge end; 29. ​​Compression spring;

[0027] 31. Drilling assembly; 32. Electric push rod; 33. Extrusion plate; 34. Positioning plate; 35. Drilling head; 36. Slide groove; 37. Return spring; 38. Bolt; 39. Scale line; 30. Slider;

[0028] 40. Grinding assembly; 41. Arc-shaped chamber; 42. Cam; 43. Extrusion rod; 44. Second motor; 45. Feed cylinder; 46. Guide plate; 47. Grinding disc; 48. Impeller;

[0029] 50. Cover plate. Implementation

[0030] The following will describe the technical mobile phone cover plate hole-forming device of the present invention clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1-9 As shown, the mobile phone cover plate forming device provided by the present invention includes a frame 10. A conveying device 20 is assembled on the outer wall of the frame 10. The conveying device 20 includes an annular fixed cylinder 21 fixedly installed on the outer wall of the frame 10. The fixed cylinder 21 is provided with a feeding end 22, a forming end 26 and a discharging end 28 in a counterclockwise direction. A cover plate 50 is elastically assembled inside the feeding end 22. The conveying device 20 also includes a storage plate 25 slidably inserted into the inner wall of the feeding end 22. A compression spring 29 is fixedly installed inside the storage plate 25. The cover plate 50 squeezes the compression spring 29 and stores it inside the storage plate 25. The elastic force provided by the compression spring 29 can push the cover plate 50 inside the storage plate 25 upward in sequence.

[0032] In more detail, a conveying cylinder 27 is rotatably mounted on the inner wall of the fixed cylinder 21. The conveying cylinder 27 is fixedly connected to the outer wall of the output shaft of the first motor 23, which is fixedly installed inside the frame 10. Several conveying slots 24 are opened on the outer wall of the conveying cylinder 27. The first motor 23 is a servo motor, which enables its power output shaft to rotate intermittently at a uniform speed in a fixed direction. The conveying slots 24 are matched with the cover plate 50, so that when the first motor 23 drives the conveying cylinder 27 to rotate, the conveying cylinder 27 will drive the conveying slots 24 to the top of the cover plate 50. At this time, the elastic force provided by the compression spring 29 will push the cover plate 50 into the interior of the conveying slots 24, realizing the feeding of the cover plate 50. When the cover plate 50 rotates with the conveying cylinder 27, the fixed cylinder 21 can limit the cover plate 50 inside the conveying slots 24 to prevent the cover plate 50 from falling off during rotation, thus protecting the cover plate 50.

[0033] like Figure 1-4 and Figure 8 As shown, it also includes a drilling assembly 30 assembled inside the hole-forming end 26. The drilling assembly 30 includes an electric push rod 31 fixedly installed at the high point of the frame 10. The electric push rod 31 and the first motor 23 are controlled by PLC programming, so that when the first motor 23 drives the conveying groove 24 on the outer wall of the conveying cylinder 27 to the position of the hole-forming end 26, the program in the PLC programming can control the electric push rod 31 to work. The output end of the electric push rod 31 is fixedly installed with an extrusion plate 32, which matches the positioning plate 33 slidably installed on the inner wall of the hole-forming end 26. The positioning plate 33 matches the conveying groove 24. The bottom sides of the positioning plate 33 are chamfered, so when the positioning plate 33 is pressed down, the positioning plate 33 can slide into the inside of the conveying groove 24 by relying on the chamfer at the bottom, so that the position of the positioning plate 33 and the conveying groove 24 can be correctly engaged and corrected when there is a deviation. The outer wall of the positioning plate 33 has two sliders 39 that can be precisely adjusted in distance. The internal elasticity of the sliders 39 is through which the punch head 34 passes. Therefore, when the positioning plate 33 is engaged with the inside of the conveying groove 24, the conveying cylinder 27 will not shake when the punch head 34 punches the cover plate 50, thus improving the punching effect. At the same time, when the conveying cylinder 27 is fixed, the cover plate 50 located at the feed end 22 can be filled into the inside of the conveying groove 24 in time under the action of the compression spring 29, which facilitates the placement of other cover plates 50.

[0034] In more detail, the drilling assembly 30 also includes a groove 35 inside the positioning plate 33 that matches the slider 39, providing sliding space for the slider 39; the upper surface of the positioning plate 33 is marked with scale lines 38, which can accurately display the distance between the two sliders 39, thereby accurately determining the distance between the two drilling heads 34, making the drilling effect of the drilling head 34 on the cover plate 50 more precise; a return spring 36 is fixedly installed between the drilling head 34 and the slider 39, and a bolt 37 threadedly connected to the positioning plate 33 passes through one side of the slider 39. The elastic force provided by the return spring 36 can keep the drilling head 34 in a return tendency, so that the drilling head 34 will not obstruct the rotation of the conveyor cylinder 27; in addition, the outer wall of the positioning plate 33 has a threaded hole that matches the bolt 37, so when the bolt 37 is rotated to press the outer wall of the positioning plate 33, the slider 39 can slide to the appropriate position for fixing, which provides convenience for adjusting the distance of the drilling head 34. By placing a batch of mobile phone cover plates 50 at the feeding end 22, the first motor 23 in the conveying device 20 drives the conveying cylinder 27 to rotate, transferring the mobile phone cover plates 50 that have entered the conveying groove 24 to the drilling end 26. The electric push rod 31 in the drilling assembly 30 squeezes the two drilling heads 34 that have been pre-adjusted, so that the drilling heads 34 can drill holes in the mobile phone cover plates 50. This is more convenient for drilling a batch of mobile phone cover plates 50, changing the traditional method of drilling a single mobile phone cover plate 50 in one go, and greatly improving the drilling efficiency.

[0035] For further details, such as Figure 1-7 As shown, in order to make the surface of the cover plate 50 smooth after drilling, the drilling equipment also includes a grinding assembly 40 mounted on the outer wall of the fixed cylinder 21. The cover plate 50 is driven by the first motor 23 to rotate the conveyor cylinder 27 into the conveyor groove 24, stops at the drilling end 26 and is drilled with two holes of different diameters in a straight line by the drilling head 34. The cover plate 50 rotates with the conveyor cylinder 27 and is ground by the grinding disc 47 included in the grinding assembly 40, and finally is discharged through the discharge end 28.

[0036] In more detail, the grinding assembly 40 includes an arc-shaped chamber 41 opened outside the fixed cylinder 21. A cam 42 is rotatably mounted inside the arc-shaped chamber 41 via a rotating shaft. A torsion spring is installed between the cam 42 and the arc-shaped chamber 41 to reset the cam 42. The rotating shaft acts as a fulcrum to facilitate the rotation of the cam 42. The arc-shaped chamber 41 provides rotation space for the cam 42, and the elastic force provided by the torsion spring can keep the high point of the cam 42 outside the arc-shaped chamber 41. Furthermore, an extrusion rod 43 matching the cam 42 is fixedly installed on the outer wall of the conveyor cylinder 27. Therefore, when the first motor 23 drives the conveyor cylinder 27 to rotate, the conveyor cylinder 27 will drive the extrusion rod 43 to rotate. The distance between the high point of the cam 42 and the conveyor cylinder 27 is greater than the distance between the feed end 22 and the hole-forming end 26 and the conveyor cylinder 27, respectively. This ensures that the extrusion rod 43 will not touch the outer walls of the feed end 22 and the hole-forming end 26 when it rotates, facilitating the rotation of the extrusion rod 43. When the extrusion rod 43 rotates, it will extrude force on the cam 42, causing... The cam 42 rotates and enters the arc-shaped chamber 41. When the cam 42 enters the arc-shaped chamber 41, it will press the cover plate 50 inside the conveying groove 24, so that the cover plate 50 can be firmly fixed inside the conveying groove 24. At the same time, the cover plate 50 after drilling can be tightly attached to the conveying groove 24. A groove is reserved between the conveying groove 24 and the inner wall of the conveying cylinder 27, so that the protrusion of the cover plate 50 after grinding extends into the groove and is ground by the grinding disc 47, making the hole of the mobile phone cover plate 50 more beautiful.

[0037] In more detail, the grinding assembly 40 also includes a second motor 44 fixedly installed on the inner wall of the frame 10. The power output shaft of the second motor 44 is fixedly connected to the grinding disc 47, and one side of the grinding disc 47 is in close contact with the inner ring wall of the conveyor cylinder 27. This allows the protrusions on the surface of the cover plate 50 exposed on the inner ring wall of the conveyor cylinder 27 to be ground off, improving the aesthetics of the hole formed in the cover plate 50. Finally, after the cover plate 50 is ground, the first motor 23 will continue to drive the conveyor cylinder 27 to rotate, and the conveyor cylinder 27 will transfer the ground cover plate 50 to the discharge end 28, where it will slide out under its own weight, completing the hole formation effect of the cover plate 50.

[0038] In more detail, the grinding assembly 40 also includes a feed cylinder 45 sleeved outside the first motor 23 and fixedly connected to the inner wall of the frame 10. An impeller 48 is fixedly installed on the outer wall of the power output shaft of the first motor 23. A guide plate 46 extending to the bottom of the grinding disc 47 is fixedly installed on one side of the feed cylinder 45. The guide plate 46 plays a guiding role, collecting the debris after the cover plate 50 is ground and transferring it into the feed cylinder 45. When the first motor 23 rotates, the first motor 23 drives the impeller 48 to rotate, so that the impeller 48 and the feed cylinder 45 cooperate to transfer the debris inside the feed cylinder 45 out, which facilitates the collection of debris and prevents the debris from causing pollution.

[0039] Working principle: First, a batch of cover plates 50 are placed inside the storage plate 25 and the storage plate 25 is inserted into the feed end 22. When the first motor 23 drives the conveyor cylinder 27 to rotate, the conveyor cylinder 27 will drive the conveyor trough 24 to the top of the cover plate 50. At this time, the elastic force provided by the compression spring 29 will push the cover plate 50 into the conveyor trough 24, realizing the feeding of the cover plate 50. When the cover plate 50 rotates with the conveyor cylinder 27, the fixing cylinder 21 can limit the cover plate 50 inside the conveyor trough 24 to prevent the cover plate 50 from falling off during the rotation, thus playing a protective role for the cover plate 50.

[0040] When the first motor 23 drives the conveying groove 24 on the outer wall of the conveying cylinder 27 to the position of the hole end 26, the program in the PLC programming can control the electric push rod 31 to work, so that the electric push rod 31 drives the extrusion plate 32 to extrude the punching head 34, so that the punching head 34 and the positioning plate 33 can enter the interior of the conveying groove 24 at the same time, realizing the punching effect on the cover plate 50. When the positioning plate 33 is engaged with the interior of the conveying groove 24, the conveying cylinder 27 will not shake when the punching head 34 punches the cover plate 50, improving the punching effect. At the same time, when the conveying cylinder 27 is fixed, the cover plate 50 located at the feed end 22 can be filled into the interior of the conveying groove 24 in time under the action of the compression spring 29, which facilitates the placement of other cover plates 50. When the rotating bolt 37 extrudes the outer wall of the positioning plate 33, the slider 39 can slide to the appropriate position for fixing, which provides convenience for adjusting the distance of the punching head 34. By placing a batch of mobile phone cover plates 50 at the feeding end 22, the first motor 23 in the conveying device 20 drives the conveying cylinder 27 to rotate, transferring the mobile phone cover plates 50 that have entered the conveying groove 24 to the drilling end 26. The electric push rod 31 in the drilling assembly 30 squeezes the two drilling heads 34 that have been pre-adjusted, so that the drilling heads 34 can drill holes in the mobile phone cover plates 50. This is more convenient for drilling a batch of mobile phone cover plates 50, changing the traditional method of drilling a single mobile phone cover plate 50 in one go, and greatly improving the drilling efficiency.

[0041] After the cover plate 50 is perforated, it continues to rotate and transfers the perforated cover plate 50 to the grinding assembly 40. When the first motor 23 drives the conveyor cylinder 27 to rotate, the conveyor cylinder 27 drives the extrusion rod 43 to rotate. When the extrusion rod 43 rotates, it extrudes the cam 42, causing the cam 42 shaft to rotate and enter the arc-shaped chamber 41. When the cam 42 enters the arc-shaped chamber 41, it extrudes the cover plate 50 inside the conveyor groove 24, thus fixing the cover plate 50 firmly inside the conveyor groove 24. At the same time, the perforated cover plate 50 can be tightly attached to the conveyor groove 24. A groove is reserved between the conveyor groove 24 and the inner wall of the conveyor cylinder 27, so that the protrusion of the cover plate 50 after grinding extends into the groove and is ground by the grinding disc 47, making the hole-forming result of the mobile phone cover plate 50 more aesthetically pleasing.

[0042] Finally, after the cover plate 50 is polished, the first motor 23 will continue to drive the conveyor cylinder 27 to rotate. The conveyor cylinder 27 will transfer the polished cover plate 50 to the discharge end 28, and the cover plate 50 will slide out from the discharge end 28 by gravity, thus completing the hole-forming effect of the cover plate 50. The guide plate 46 plays a guiding role, which can collect the debris after the cover plate 50 is polished and transfer it to the inside of the conveyor cylinder 45. When the first motor 23 rotates, the first motor 23 will drive the impeller 48 to rotate, so that the impeller 48 and the conveyor cylinder 45 cooperate to transfer the debris inside the conveyor cylinder 45 out, which facilitates the collection of debris and prevents the debris from causing pollution.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the mobile phone cover plate hole forming device and its inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A hole-forming device for mobile phone cover plates, characterized in that, The device includes a frame (10), and a conveying device (20) is mounted on the outer wall of the frame (10). The conveying device (20) includes an annular fixed cylinder (21) fixedly installed on the outer wall of the frame (10). The fixed cylinder (21) is provided with a feeding end (22), a hole forming end (26) and a discharging end (28) in a counterclockwise direction. A cover plate (50) is elastically installed inside the feeding end (22). A conveying cylinder (27) is rotatably installed on the inner wall of the fixed cylinder (21). The conveying cylinder (27) is fixedly connected to the outer wall of the output shaft of the first motor (23) fixedly installed inside the frame (10). A plurality of conveying grooves (24) are provided on the outer wall of the conveying cylinder (27). It also includes a punching assembly (30) assembled inside the hole-forming end (26), the punching assembly (30) including an electric push rod (31) fixedly installed at a high position of the frame (10), the output end of the electric push rod (31) is fixedly installed with an extrusion plate (32) and matched with a positioning plate (33) slidably installed on the inner wall of the hole-forming end (26), the outer wall of the positioning plate (33) has two sliders (39) that can precisely adjust the distance, and the internal elasticity of the sliders (39) is penetrated by the punching head (34). It also includes a grinding assembly (40) mounted on the outer wall of the fixed cylinder (21). The cover plate (50) is driven by the first motor (23) to rotate the conveyor cylinder (27) into the conveyor groove (24). It stops at the hole-forming end (26) and is drilled into two holes of different diameters in a straight line by the punching head (34). The cover plate (50) rotates with the conveyor cylinder (27) and is ground by the grinding disc (47) included in the grinding assembly (40). Finally, it is discharged through the discharge end (28). The grinding assembly (40) includes an arc-shaped chamber (41) opened outside the fixed cylinder (21), and a cam (42) is rotatably mounted inside the arc-shaped chamber (41) via a rotating shaft. A torsion spring is installed between the cam (42) and the arc-shaped chamber (41) to reset the cam (42). The grinding assembly (40) also includes a second motor (44) fixedly installed on the inner wall of the frame (10). The power output shaft of the second motor (44) is fixedly connected to the grinding disc (47). One side of the grinding disc (47) is in close contact with the inner wall of the conveyor cylinder (27). The outer wall of the conveyor cylinder (27) is fixedly equipped with a pressing rod (43) that matches the cam (42).

2. The mobile phone cover plate hole forming device according to claim 1, characterized in that, The conveying device (20) also includes a storage plate (25) that is slidably inserted into the inner wall of the feed end (22). A compression spring (29) is fixedly installed inside the storage plate (25), and the cover plate (50) squeezes the compression spring (29) to store it inside the storage plate (25).

3. The mobile phone cover plate hole forming device according to claim 2, characterized in that, The drilling assembly (30) also includes a groove (35) inside the positioning plate (33) that is adapted to the slider (39). The upper surface of the positioning plate (33) is marked with scale lines (38). A return spring (36) is fixedly installed between the drilling head (34) and the slider (39). A bolt (37) threadedly connected to the positioning plate (33) passes through one side of the slider (39).

4. The mobile phone cover plate hole forming device according to claim 3, characterized in that, The positioning plate (33) has chamfers on both sides of its bottom.

5. The mobile phone cover plate hole forming device according to claim 4, characterized in that, The distance between the high point of the cam (42) and the conveyor cylinder (27) is greater than the distance between the feed end (22) and the hole forming end (26) and the conveyor cylinder (27), respectively.

6. The mobile phone cover plate hole forming device according to claim 5, characterized in that, The grinding assembly (40) also includes a feed cylinder (45) sleeved outside the first motor (23) and fixedly connected to the inner wall of the frame (10). An impeller (48) is fixedly installed on the outer wall of the power output shaft of the first motor (23). A guide plate (46) extending to the bottom of the grinding disc (47) is fixedly installed on one side of the feed cylinder (45).

Images