Sandpaper tearing device

Abstract

The utility model relates to a kind of sandpaper tearing device.The sandpaper tearing device has supporting plane, when the polishing disc pasted with sandpaper is supported against supporting plane, sandpaper is flattened between supporting plane and polishing disc;The sandpaper tearing device includes plug knife and first power source, first power source is connected with plug knife transmission, for making plug knife move relative to supporting plane, insert sandpaper between polishing disc.The sandpaper tearing device provided by the utility model tears sandpaper, since sandpaper is flattened between polishing disc and supporting plane, the probability of plug knife accurately inserted between polishing disc and sandpaper is greatly improved.

Description

Technical Field

[0001] This utility model relates to a sandpaper tearing device. Background Technology

[0002] Currently, aluminum window frame polishing can be improved using automated polishing equipment. The polishing discs of these machines are covered with sandpaper, which wears down after a period of use and needs to be replaced. The current solution involves using a robotic arm to align the sandpaper-covered polishing disc with a scraper. The robotic arm or scraper then moves to separate the sandpaper from the polishing disc by scraping it between them.

[0003] After use, sandpaper wrinkles, sometimes preventing the scraper from cutting between the sandpaper and the polishing pad, making it impossible to remove the sandpaper. Because the sandpaper is not removed, the production line needs to be stopped for about 30 minutes, during which time employees need to enter the polishing room to manually replace the sandpaper. Utility Model Content

[0004] The technical problem to be solved by this utility model is: the problem that the scraper cannot scrape into the space between the sandpaper and the polishing pad due to the wrinkling of the sandpaper.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A sandpaper tearing device has a support plane. When a polishing disc with sandpaper attached abuts against the support plane, the sandpaper is pressed flat between the support plane and the polishing disc. The sandpaper tearing device includes a cutting tool and a first power source. The first power source is drivenly connected to the cutting tool and is used to move the cutting tool relative to the support plane and insert it between the sandpaper and the polishing disc.

[0006] Preferably, the sandpaper tearing device further includes a positioning block, the supporting plane has a sandpaper tearing area, the positioning block is disposed on the supporting plane, and is used for the polishing disc to abut against, so that the polishing disc is aligned with the sandpaper tearing area.

[0007] Preferably, the sandpaper tearing device further includes an air blowing device; the positioning block is provided with an air blowing port, and the air blowing device blows air from the air blowing port to the sandpaper tearing area, blowing the torn sandpaper away from the support plane.

[0008] Preferably, the sandpaper tearing device further includes an air blowing device for blowing the torn sandpaper away from the support surface.

[0009] Preferably, the sandpaper tearing device further includes a pin and a second power source; the cutting tool is provided with a relief portion corresponding to the pin; the second power source is connected to the pin for driving the pin to pass through the support plane, pierce the sandpaper and insert into the relief portion.

[0010] Preferably, the clearance portion is a groove on the insert.

[0011] Preferably, there are two insert blades, which are arranged facing each other; there are two first power sources, and each insert blade corresponds to one of the first power sources.

[0012] Preferably, the inserter has a tip, which is a double-edged structure with two blades.

[0013] Preferably, the blade tip has two bevels and a bottom surface, with each bevel corresponding to a blade edge; the bottom surface of the blade tip is parallel to the supporting plane and is closer to the supporting plane than the bevels.

[0014] Preferably, the sandpaper tearing device further includes a robotic arm for moving the polishing disc.

[0015] The beneficial effects of this utility model are as follows: When tearing sandpaper using the sandpaper tearing device provided by this utility model, the probability of the inserter accurately inserting between the polishing disc and the sandpaper is greatly increased because the sandpaper is flattened between the polishing disc and the supporting plane. Afterwards, simply moving the polishing disc upwards will completely separate the sandpaper from the polishing disc, with the sandpaper pressed between the inserter and the supporting plane. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sandpaper tearing device according to an embodiment of the present invention; Figure 2 This is an exploded view of the sandpaper tearing device in this embodiment; Figure 3 This is a schematic diagram of the structure of the sandpaper tearing device and the polishing disc with sandpaper attached in this embodiment; Figure 4 This is a schematic diagram of the structure of the sandpaper tearing device when the insert is in the second position according to this embodiment; Figure 5 This is a schematic diagram of the structure of the sandpaper tearing device when the pin is in the fourth position in this embodiment; Figure 6 for Figure 5 A magnified view of a portion of region A; Figure 7 This is a schematic diagram of the inserter structure in this embodiment; Figure 8 This is a schematic diagram of the second power source and the pin in this embodiment; Figure 9 This is a schematic diagram of the positioning block in this embodiment; Label Explanation: 1. Support plane; 2. Insert tool; 3. First power source; 4. Positioning block; 5. Insert pin; 6. Second power source; 7. Polishing disc; 8. Sandpaper; 11. Sandpaper tearing area; 21. Bevel; 22. Bottom surface; 23. Clearance section; 41. Air inlet; 42. Clearance opening; 51. Point; 61. Mounting block. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] The sandpaper on the polishing disc of polishing equipment wears out after a period of use and needs to be replaced. Replacing sandpaper mainly involves two steps: tearing off the old sandpaper and applying new sandpaper. However, existing technology sometimes fails to successfully tear off the old sandpaper due to wrinkles. This invention addresses this issue by providing a sandpaper tearing device. When tearing sandpaper using this device, the sandpaper is first flattened before the blade is pushed in, significantly improving the success rate of tearing sandpaper.

[0019] Please refer to Figure 1 and 2 The sandpaper tearing device provided by this utility model has a supporting plane 1. When the polishing disc 7 with sandpaper 8 attached abuts against the supporting plane 1, the sandpaper 8 is pressed flat between the supporting plane 1 and the polishing disc 7. The sandpaper tearing device includes a cutting tool 2 and a first power source 3. The first power source 3 is connected to the cutting tool 2 for driving the cutting tool 2 to move relative to the supporting plane 1 and insert it between the sandpaper 8 and the polishing disc 7.

[0020] As can be seen from the above description, the beneficial effects of this utility model are as follows: The sandpaper tearing device has a supporting plane 1, which can be used to abut the polishing disc 7 with sandpaper 8 attached, so that the sandpaper 8 is flattened between the supporting plane 1 and the polishing disc 7. This facilitates the alignment of the sandpaper 8 and the polishing disc 7 with the insert 2, greatly increasing the probability of the insert 2 being inserted between the sandpaper 8 and the polishing disc 7, and improving the success rate of tearing the sandpaper.

[0021] Preferably, please refer to Figure 3 and 4 The sandpaper tearing device also includes a positioning block 4. The supporting plane 1 has a sandpaper tearing area 11. The positioning block 4 is disposed on the supporting plane 1 and is used for the polishing disc 7 to abut against, so that the polishing disc 7 is aligned with the sandpaper tearing area 11.

[0022] As described above, when the polishing disc 7 with sandpaper 8 attached is moved above the support plane 1, it can be aligned with the sandpaper-tearing area 11 by abutting against the positioning block 4. The sandpaper-tearing area 11 can be an area on the support plane 1 that meets the following conditions: when the polishing disc 7 is aligned with the sandpaper-tearing area 11 and abuts against the support plane 1, the insert 2 points to the axis of rotation of the polishing disc 7 during the polishing operation.

[0023] If necessary, the alignment of the polishing disc 7 and the sandpaper tearing area 11 can also be achieved in other ways, such as by setting a camera on the robotic arm used to move the polishing disc 7 and setting positioning marks in the sandpaper tearing area 11 that can be recognized by the camera.

[0024] Preferably, the sandpaper tearing device further includes an air blowing device for blowing the torn sandpaper 8 away from the support plane 1.

[0025] As can be seen from the above description, the air blowing device can blow the torn sandpaper 8 away from the support plane 1, thus solving the problem of the torn sandpaper 8 remaining on the support plane 1.

[0026] If necessary, other devices that can remove the torn old sandpaper 8 from the support plane 1 can be used instead of the blowing device, such as a device that can generate negative pressure to suck the torn old sandpaper 8 away from the support plane 1.

[0027] Preferably, please refer to Figures 4 to 6 The positioning block 4 is equipped with an air outlet 41. The air blowing device blows air from the air outlet 41 into the sandpaper tearing area 11, blowing the torn sandpaper 8 away from the support plane 1. Please refer to the air blowing direction. Figure 6 The arrow in the image.

[0028] As described above, the positioning block 4 is located on the upper side of the supporting plane 1, the sandpaper tearing area 11 is located in front of the positioning block 4, and an air blowing port 41 along the front-back direction is provided on the positioning block 4. The air blowing device can be located behind the positioning block 4. The polishing disc 7 only needs to pass above and in front of the sandpaper tearing area 11, and its movement path will not interfere with the air blowing device located behind the positioning block 4. Since the air blowing device does not need to move to avoid the polishing disc 7, once the old sandpaper 8 is loosened, the air blowing device can blow the old sandpaper 8 away, and the cleaning process is quick.

[0029] Preferably, please refer to Figure 5 and 6 The sandpaper tearing device also includes a pin 5 and a second power source 6; the blade 2 is provided with a relief part 23 corresponding to the pin 5; the second power source 6 is connected to the pin 5 for driving the pin 5 out of the support plane 1, piercing the sandpaper 8 and inserting into the relief part 23.

[0030] As can be seen from the above description, after the inserter 2 is inserted between the sandpaper 8 and the polishing disc 7, during the process of the robotic arm separating the polishing disc 7 and the sandpaper 8, the inserter 5 has a fixing effect on the sandpaper 8, which can prevent the sandpaper 8 from being taken away by the polishing disc 7.

[0031] Preferably, please refer to Figure 7 The clearance part 23 is a groove on the insert 2.

[0032] As can be seen from the above description, the inserter 2 separates the inserter 5 from the polishing disk 7, which can protect the polishing disk 7 and prevent the polishing disk 7 from being scratched by the inserter 5.

[0033] Preferably, please refer to Figure 4There are two insert blades 2, which are set facing each other; there are two first power sources 3, and the insert blades 2 and the first power sources 3 correspond one-to-one.

[0034] As described above, the two inserters 2 advance towards each other, separating both sides of the sandpaper 8 from the polishing disc 7. Then, when the robotic arm moves the polishing disc 7 upwards, the area of ​​adhesion between the sandpaper 8 and the polishing disc 7 is very small, making it easier for the sandpaper 8 to completely separate from the polishing disc 7. The two inserters 2 are powered by different primary power sources 3, which better addresses the different resistance encountered by the two inserters 2.

[0035] Depending on the needs, you can also set up more blades 2 or just one blade 2.

[0036] Preferably, please refer to Figure 4 and 7 The insert knife 2 has a blade tip, which is a double-edged structure with two blades.

[0037] As can be seen from the above description, the inserter 2 has a double-edged tip, which is conducive to the smooth advancement of the inserter 2.

[0038] Depending on the requirements, the inserter 2 can also have other structures.

[0039] Preferably, please refer to Figure 4 and 7 The blade tip has two bevels 21 and a bottom surface 22. The bevels 21 correspond one-to-one with the blade edge. The bottom surface 22 of the blade tip is parallel to the support plane 1 and is closer to the support plane 1 than the bevels 21.

[0040] As can be seen from the above description, in order to flatten the sandpaper 8, the polishing disc 7 is very close to the supporting plane 1. The polishing disc 7 has a certain degree of elasticity, and the blade tip has an upward-facing bevel 21, which makes it easier for the insert blade 2 to be inserted between the sandpaper 8 and the polishing disc 7.

[0041] Preferably, the sandpaper tearing device further includes a robotic arm for moving the polishing disc 7.

[0042] As can be seen from the above description, the robotic arm can align the polishing disc 7 with the sandpaper tearing area 11 and place it on the support plane 1, and can also remove the polishing disc 7 from the sandpaper tearing device.

[0043] If necessary, other devices capable of moving the polishing disc 7 can be used to replace the robotic arm.

[0044] Please refer to Figures 1 to 9 One embodiment of this utility model is as follows: A sandpaper tearing device has a supporting plane 1, please refer to Figure 3When the polishing disc 7 with sandpaper 8 attached is pressed against the supporting surface 1, the sandpaper 8 is flattened between the supporting surface 1 and the polishing disc 7. The sandpaper-tearing device includes two insert blades 2 and two first power sources 3. The insert blades 2 are arranged facing each other. The first power sources 3 are also present, with each insert blade 2 corresponding to one of the first power sources 3. The sandpaper-tearing device also includes a robotic arm for moving the polishing disc 7.

[0045] The insert 2 is fixed to the power output end of the first power source 3. The first power source 3 enables the insert 2 to reciprocate between a first position and a second position relative to the supporting plane 1. Please refer to [reference needed]. Figure 3 The inserter 2 is located in the first position relative to the support plane 1; please refer to... Figure 4 The inserter 2 is located in the second position relative to the support plane 1.

[0046] Please refer to Figures 2 to 4 The sandpaper tearing device also includes a positioning block 4. The supporting plane 1 has a sandpaper tearing area 11. The positioning block 4 is disposed on the supporting plane 1. The positioning block 4 has an arc-shaped surface that matches the polishing disc 7, which is used for the polishing disc 7 to abut against, so that the polishing disc 7 is aligned with the sandpaper tearing area 11.

[0047] Please refer to Figure 4 and 9 The positioning block 4 is provided with an air inlet 41. An air blowing device blows air from the air inlet 41 to the sandpaper tearing area 11, blowing the torn sandpaper 8 away from the support plane 1. The positioning block 4 is also provided with a clearance opening 42 to avoid the insertion knife 2.

[0048] Please refer to Figure 4 and 7 The insert 2 has an L-shaped structure and a blade tip. This blade tip has a double-edged structure with two cutting edges. The blade tip has two bevels 21 and a bottom surface 22, with each bevel corresponding to one of the cutting edges. The bottom surface 22 of the blade tip is parallel to the supporting plane 1 and is closer to the supporting plane 1 than the bevels 21.

[0049] Please refer to Figure 8 The sandpaper tearing device also includes two pins 5 and a second power source 6. Each pin 5 corresponds to a blade 2. The pins 5 have pointed tips 51, which facilitate piercing the sandpaper 8. The blade 2 has a recessed portion 23 corresponding to the pins 5. The power output end of the second power source 6 has a mounting block 61, on which the two pins 5 are fixed. The second power source 6 enables the pins 5 to reciprocate between a third and a fourth position relative to the supporting plane 1. (Please refer to...) Figure 1 Pin 5 is located in the third position relative to the support plane 1; please refer to... Figure 5 and 6The pin 5 is located in the fourth position relative to the support plane 1. As the pin 5 moves from the third position to the fourth position relative to the support plane 1, the tip 51 of the pin 5 protrudes from the support plane 1, pierces the sandpaper 8, and inserts into the clearance part 23.

[0050] The sandpaper tearing process of this sandpaper tearing device is as follows: When the inserter 2 is in the first position and the inserter 5 is in the third position, the robotic arm moves the polishing disc 7 with the old sandpaper 8 attached from front to back until the polishing disc 7 abuts against the positioning block 4. At this time, the polishing disc 7 is aligned with the sandpaper-torn area 11. Then, the robotic arm moves the polishing disc 7 downward until the sandpaper 8 abuts against the support plane 1.

[0051] The first power source 3 moves the inserter 2 from the first position to the second position, and the tip of the inserter 2 is inserted between the sandpaper 8 and the polishing disc 7.

[0052] After the inserter 2 reaches the second position, the second power source 6 causes the inserter 5 to move from the third position to the fourth position. The tip 51 of the inserter 5 protrudes from the support plane 1, pierces the sandpaper 8, and inserts into the relief part 23.

[0053] After the inserter 5 reaches the fourth position, the robotic arm moves the polishing disc 7 upwards until the polishing disc 7 is completely separated from the sandpaper 8. At this time, the inserter 2 is still in the second position, and the torn sandpaper 8 is pressed onto the support plane 1 by the inserter 2. Because the inserter 5 fixes the sandpaper 8, the sandpaper 8 will not be carried away by the polishing disc 7 during the upward movement of the robotic arm.

[0054] After the second power source 6 returns the pin 5 to the third position, the first power source 3 then returns the blade 2 to the first position. At this time, the torn sandpaper 8 is no longer restrained and is blown away from the support plane 1 by the air blowing device.

[0055] In summary, the sandpaper tearing device provided by this utility model has a supporting plane 1. When tearing sandpaper using this sandpaper tearing device, the sandpaper 8 is first flattened, and then the insert 2 is pushed in, which can greatly increase the probability of the insert 2 being inserted between the sandpaper 8 and the polishing disc 7, and improve the success rate of tearing sandpaper.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sandpaper tearing device, characterized in that: When a polishing pad with a support surface and sandpaper is pressed against the support surface, the sandpaper is flattened between the support surface and the polishing pad. It includes a cutting tool and a first power source. The first power source is connected to the cutting tool drive and is used to move the cutting tool relative to the support plane and insert it between the sandpaper and the polishing disc.

2. The sandpaper tearing device as described in claim 1, characterized in that: It also includes a positioning block. The supporting plane has a sandpaper tearing area. The positioning block is set on the supporting plane and is used for the polishing disc to abut against, so that the polishing disc is aligned with the sandpaper tearing area.

3. The sandpaper tearing device as described in claim 2, characterized in that: It also includes an air blowing device; The positioning block is equipped with an air blowing port. The air blowing device blows air from the air blowing port toward the sandpaper tearing area, blowing the torn sandpaper away from the support plane.

4. The sandpaper tearing device as described in claim 1, characterized in that: It also includes an air blowing device, which is used to blow the torn sandpaper off the support surface.

5. The sandpaper tearing device as described in claim 1, characterized in that: It also includes pins and a second power source; The inserter has a clearance portion corresponding to the insert pin; The second power source is connected to the pin drive and is used to make the pin pass through the support plane, pierce the sandpaper and insert into the relief part.

6. The sandpaper tearing device as described in claim 5, characterized in that: The clearance part is a groove on the insert.

7. The sandpaper tearing device as described in claim 1, characterized in that: The number of inserters is two, and the two inserters are set facing each other; There are two primary power sources, and each blade corresponds to one primary power source.

8. The sandpaper tearing device as described in claim 1, characterized in that: The knife has a tip, which is a double-edged structure with two blades.

9. The sandpaper tearing device as described in claim 8, characterized in that: The blade tip has two bevels and a bottom surface, with each bevel corresponding to a blade edge. The bottom surface of the blade tip is parallel to the supporting plane and is closer to the supporting plane than the inclined plane.

10. The sandpaper tearing device as described in claim 1, characterized in that: It also includes robotic arms, which are used to move the polishing discs.

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