Circuit board half-hole burr scraping tool

Abstract

A circuit board half-hole burr scraping tool comprises a suction device, a scraping piece is arranged on the suction device, and an opening and closing device is arranged at the upper end of the suction device. The scraper can rotate in the axial direction of the outer pipe, in addition, if the base plate abuts against the machining table top, the outer pipe is in a vertical state at the moment, the scraper is in a vertical state at the moment, it can be ensured that the scraper is in the vertical state when the scraper rotates, and then unnecessary damage to a half hole is avoided. And in the scraping action, an operator can conveniently adjust the scraper in the vertical direction according to the thickness of the plate, the depth of the hole and the like.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board processing, in particular to a tool for scraping burrs off a half hole of a circuit board. Background Art

[0002] A half-hole or half-slot is a plated hole or slot formed on the edge of a board, with half of the hole or slot removed. The remaining portion is the half-hole. Common methods for creating half-holes are mechanical methods like drilling or grooving. Because the metallized hole wall is cut into during machining, burrs and other issues are prone to occur. Currently, burr removal is commonly done by scraping with a tool under a video magnifier or handheld magnifier. This process can easily scratch the PCB itself. Summary of the Invention

[0003] The present invention provides a tool for scraping burrs from a half hole of a circuit board to address the deficiencies of the above-mentioned prior art, solves the problem that debris cannot be promptly processed during the scraping process and that metal vias are easily damaged during the scraping process, and has strong practicality.

[0004] In order to achieve the purpose of the present invention, the following technologies are proposed: A tool for scraping burrs from a half hole of a circuit board comprises a sucker, a scraping piece is provided on the sucker, and an opener and shutter is provided at the upper end of the sucker.

[0005] Furthermore, the sucker includes a lower ring member, an upper end cover is formed at the upper end of the lower ring member, an upper extension tube is formed on the upper end cover, a connecting protrusion is formed on the outer periphery of the upper end of the upper extension tube, and the upper end ring is fixed to the connecting protrusion by screws, a plurality of circumferential side holes are opened on the outer periphery of the lower ring member, the circumferential side holes are in the form of long strips, an embedded groove is opened on the lower end face of the lower ring member, the inner periphery of the embedded groove is in a conical structure, and the diameter of the upper end of the embedded groove is smaller than the diameter of its lower end.

[0006] A first tapered hole is formed at the lower end of the inner circumference of the upper end ring, a reamer is formed at the upper end of the inner circumference of the upper extension tube, and a second tapered hole is formed at the lower end of the reamer. The diameter of the lower end of the second tapered hole is smaller than that of its upper end, and the diameter of the upper end of the first tapered hole is smaller than that of its lower end.

[0007] A conical bucket is fixed to the inner wall of the upper end cover by screws. A plurality of holes are opened on the circumference of the conical bucket. The lower end of the conical bucket is closed. The conical bucket is located directly below the upper extension tube. The diameter of the lower end of the conical bucket is smaller than the diameter of the upper end. A filter cloth is provided on the outer periphery of the conical bucket.

[0008] The lower end of the inner wall of the lower ring is connected to an external threaded ring through a thread, and the inner wall of the external threaded ring is a conical structure. The diameter of the upper end of the conical structure of the external threaded ring is larger than the diameter of its lower end. The lower end of the external threaded ring is formed with a lower end cover, and the lower wall of the lower end cover is coaxially formed with a chassis. A plurality of through holes are provided on the lower end cover, and an embedded edge is formed at the lower end of the outer periphery of the lower end cover. The outer periphery of the embedded edge is a conical structure, and the diameter of the upper end of the conical structure of the embedded edge is smaller than the diameter of the lower end. The embedded edge is located in the embedded groove, and the conical structure of the embedded edge is in contact with the conical structure of the embedded groove, and sealing grease is filled in between.

[0009] A first pipe fitting is passed through the upper extension tube, and a tapered ring is formed at the lower end of the first pipe fitting. The inner diameter and outer diameter of the lower end of the tapered ring are smaller than the inner diameter and outer diameter of the upper end. An arcuate surface is formed at the lower end of the tapered ring, and the tapered ring extends into the tapered bucket. A retaining ring is connected to the outer periphery of the first pipe fitting through a threaded connection. A first inner ring is formed at the upper end of the inner periphery of the first pipe fitting. The lower end face of the first inner ring is a tapered structure, and the diameter of the upper end of the tapered structure of the first inner ring is smaller than the diameter of the lower end. An upper convex edge is formed at the upper end of the first inner ring, and the outer periphery of the upper convex edge is a tapered structure, and the diameter of the upper end of the tapered structure of the upper convex edge is smaller than the diameter of the lower end.

[0010] A first convex ring is formed on the outer periphery of the lower end of the first pipe fitting, and the upper wall and the lower wall of the first convex ring are both conical structures. The diameter of the upper end of the conical structure of the first convex ring at the upper end is smaller than the diameter of its lower end, and the diameter of the upper end of the conical structure of the first convex ring at the lower end is larger than the diameter of its lower end. The conical structure of the first convex ring at the upper end contacts the inner wall of the first tapered hole, and the contact point is coated with sealing grease. The conical structure of the first convex ring at the lower end contacts the inner wall of the second tapered hole, and the contact point is coated with sealing grease.

[0011] The upper end of the first pipe fitting is connected to a connecting pipe through a thread, and a spacer ring is formed on the outer periphery of the connecting pipe. The spacer ring is located at the upper end of the first pipe fitting, and the diameter of the spacer ring is larger than the diameter of the first pipe fitting. The lower end of the inner periphery of the connecting pipe is a conical structure, and the diameter of the lower end of the conical structure at the lower end of the connecting pipe is larger than the diameter of its upper end, and the conical structure at the lower end of the connecting pipe contacts the conical structure of the upper convex edge, and the contact point is coated with sealing grease. The upper end of the inner periphery of the connecting pipe is a conical structure, and the diameter of the upper end of the conical structure at the upper end of the connecting pipe is larger than the diameter of its lower end.

[0012] The outer periphery of the upper end of the connecting pipe is connected to the second pipe fitting through a thread, and the lower end of the inner periphery of the second pipe fitting is formed with a second inner ring, the upper end of the second inner ring is a conical structure, the diameter of the upper end of the conical structure of the second inner ring is larger than the diameter of its lower end, and the lower end of the second inner ring is formed with a lower convex edge, the outer periphery of the lower convex edge is a conical structure, and the diameter of the lower end of the conical structure of the lower convex edge is smaller than the diameter of its upper end, the conical structure of the lower convex edge is in contact with the conical structure of the upper end of the connecting pipe, and the upper end of the second pipe fitting is provided with a first convex edge.

[0013] The upper end of the second pipe is sleeved with a lower top ring, and the lower end of the lower top ring is provided with a slot. The upper end of the second pipe is inserted into the slot, and the first convex edge is located in the slot. The outer upper end of the lower top ring is formed with a second convex edge.

[0014] The outer periphery of the lower top ring is sleeved with a third pipe fitting, the lower wall of the second convex edge is in contact with the upper end of the third pipe fitting, the second pipe fitting is located inside the third pipe fitting, the outer periphery lower end of the third pipe fitting is formed with a third convex edge, the outer periphery of the third convex edge is provided with an annular groove with a U-shaped cross-section, the outer periphery lower end of the third convex edge is formed with a fourth convex edge, the inner periphery of the lower end of the third pipe fitting is formed with a sixth convex edge, the sixth convex edge is located below the spacer ring, and the spacer ring is located inside the third pipe fitting.

[0015] A rotating ring is sleeved on the third convex edge, and a plurality of limit rods are connected to the outer circumference of the rotating ring through threads. The inner end of the limit rod is a hemispherical structure, and the inner end of the limit rod extends into the ring groove. The rotating ring is located above the fourth convex edge, and an outer tube is formed on the upper end of the rotating ring. A fifth convex edge is formed on the upper end of the outer tube, and an anti-slip pattern is formed on the outer circumference of the fifth convex edge.

[0016] A first spring is sleeved on the first pipe, the lower end of the first spring abuts against the upper end of the retaining ring, and the upper end of the first spring abuts against the lower end of the third pipe; Furthermore, the scraper includes a fixed ring fixed to the lower end of the outer tube, and multiple pairs of convex plates are formed on the outer circumference of the fixed ring. A scraper is provided between each pair of convex plates, and the upper end of the scraper is fixed between each pair of convex plates by screws.

[0017] Furthermore, the opener and closeer includes an opening and closing outer tube connected to the inner circumference of the second pipe fitting by threads, and the outer circumference of the opening and closing outer tube is formed with a lower sealing ring and an upper sealing ring from bottom to top, the lower wall of the lower sealing ring abuts against the upper end of the lower top ring, and the lower sealing ring and the upper sealing ring are located inside the outer tube.

[0018] The inner circumference of the lower end of the opening and closing outer tube is connected to the upper top ring through a thread, and the outer circumference of the lower end of the upper top ring is formed with a seventh convex edge, and the upper end of the seventh convex edge contacts the lower end of the opening and closing outer tube. The upper end of the inner circumference of the upper top ring is a conical structure, and the upper end of the inner circumference of the upper top ring is a conical structure. The diameter of the upper end of the conical structure of the upper top ring is larger than the diameter of its lower end.

[0019] The inner circumference of the opening and closing outer tube is connected with a sealing inner ring through a thread, and the upper end of the sealing inner ring is formed with an outer cone ring, and the diameter of the upper end of the outer circumference of the outer cone ring is smaller than the diameter of the lower end thereof.

[0020] A central connecting tube is connected to the upper top ring through a thread, and a sealing cone ring is formed on the outer periphery of the lower end of the central connecting tube. The diameter of the lower end of the sealing cone ring is smaller than the diameter of its upper end. The outer periphery of the sealing cone ring contacts the inner wall of the conical structure of the upper top ring. The central connecting tube is inserted into the sealing inner ring, and a connecting cover is formed on the upper end of the central connecting tube. The junction between the connecting cover and the central connecting tube is a conical structure. The outer diameter of the connecting cover is larger than the outer diameter of the central connecting tube. A plurality of suction holes are provided on the conical structures of the connecting cover and the central connecting tube, and there is an annular gap between the connecting cover and the movable tube.

[0021] A movable tube is provided in the outer opening and closing tube, and a connecting cover is located in the movable tube. There is an annular gap between the connecting cover and the movable tube. A sealing convex edge is formed on the inner periphery of the lower end of the movable tube, and a third tapered hole is formed on the upper end of the sealing convex edge. The diameter of the lower end of the third tapered hole is smaller than the diameter of its upper end. A fourth tapered hole is formed on the lower end of the sealing convex edge. The diameter of the lower end of the fourth tapered hole is larger than the diameter of its upper end. An eighth convex edge is formed on the upper end of the movable tube, and the eighth convex edge is located above the upper sealing ring. A second spring is sleeved on the movable tube, and the upper end of the second spring abuts against the lower wall of the eighth convex edge, and the lower end of the second spring abuts against the upper wall of the upper sealing ring.

[0022] When the middle connecting tube is disconnected from the movable tube, the outer periphery of the conical structure of the connecting cover and the middle connecting tube contacts the inner wall of the third conical hole. When the middle connecting tube is connected to the movable tube, the outer periphery of the outer cone ring contacts the inner wall of the fourth conical hole, and the conical structure of the connecting cover and the middle connecting tube extends into the movable tube.

[0023] The upper end of the movable tube is connected to an inner extension column through a thread, and an upper cover is formed on the upper end of the inner extension column. An L-shaped hole is connected to the inner extension column and the upper cover. The outer end of the L-shaped hole is connected to a connecting pipe head through a thread, and the L-shaped hole is connected to the movable tube.

[0024] The advantages of the above technical solution are: The scraper provided by the present invention can rotate along the axis of the outer tube. Furthermore, if the base plate abuts against the processing table, the outer tube is in a vertical position, and the scraper is also in a vertical position. This ensures that the scraper remains vertical during rotation, thereby preventing unnecessary damage to the half-hole. Furthermore, during the scraping operation, the operator can easily adjust the vertical direction of the scraper according to the thickness of the board and the depth of the hole.

[0025] The suction component provided by the present invention, which is composed of a lower ring, an upper end cover, and a lower end cover, can not only absorb debris through the peripheral side holes, but also absorb debris that falls on the table through negative pressure through the through holes, so that the debris is located in the cavity formed by the lower ring, the upper end cover, and the lower end cover. The conical bucket and filter cloth can prevent these debris from entering the suction pump and related through-pipes, causing pipe blockage. In addition, to prevent the increase of debris from clogging the filter cloth, the internal support component is configured to have a conical structure. In order to be able to absorb the debris on the table into the cavity, the lower end face of the lower end cover is configured to have a conical structure, and the contact between the chassis and the table provides space for the debris to enter the cavity.

[0026] The present invention facilitates timely ventilation for operators through the provided opener and closeer, thereby creating convenience for the suction of debris, and connection can be achieved by simply pressing during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Figure 1 A three-dimensional structural diagram of a circuit board half-hole burr scraping tool is shown.

[0029] Figure 2 The cross-sectional structure diagram of the circuit board half-hole burr scraping tool is shown.

[0030] Figure 3 A three-dimensional structural diagram of a scraping element is shown.

[0031] Figure 4 A cross-sectional structural diagram of the shutter is shown.

[0032] Figure 5 A first cross-sectional structural view of the upper portion of the extractor is shown.

[0033] Figure 6 A second cross-sectional structural view of the upper portion of the extractor is shown.

[0034] Figure 7 Shows a cross-sectional structural diagram of the lower part of the extractor. DETAILED DESCRIPTION

[0035] like Figure 1 As shown, a tool for scraping burrs from a half hole of a circuit board comprises a sucker 2 , a scraper 3 is provided on the sucker 2 , and an opener 4 is provided at the upper end of the sucker 2 .

[0036] like Figure 2 、 Figures 5 to 7As shown, the sucker 2 includes a lower ring member 205, an upper end cover 207 is formed at the upper end of the lower ring member 205, an upper extension tube 208 is formed on the upper end cover 207, a connecting flange 209 is formed on the outer periphery of the upper end of the upper extension tube 208, an upper end ring 216 is fixed to the connecting flange 209 by screws, a plurality of circumferential side holes 206 are provided on the outer periphery of the lower ring member 205, the circumferential side holes 206 are in the form of long strips, an embedded groove is provided on the lower end face of the lower ring member 205, the inner periphery of the embedded groove is in a conical structure, and the diameter of the upper end of the embedded groove is smaller than the diameter of the lower end thereof.

[0037] A first tapered hole 217 is formed at the lower end of the inner circumference of the upper end ring 216, a reamer hole 210 is formed at the upper end of the inner circumference of the upper extension tube 208, and a second tapered hole 211 is formed at the lower end of the reamer hole 210. The diameter of the lower end of the second tapered hole 211 is smaller than the diameter of its upper end, and the diameter of the upper end of the first tapered hole 217 is smaller than the diameter of its lower end.

[0038] A conical bucket 213 is fixed to the inner wall of the upper end cover 207 by screws. A plurality of holes 214 are provided on the circumference of the conical bucket 213. The lower end of the conical bucket 213 is closed. The conical bucket 213 is located directly below the upper extension tube 208. The diameter of the lower end of the conical bucket 213 is smaller than the diameter of the upper end. A filter cloth 215 is provided on the outer periphery of the conical bucket 213.

[0039] The lower end of the inner wall of the lower ring 205 is connected to the external threaded ring 203 through a thread. The inner wall of the external threaded ring 203 has a conical structure. The diameter of the upper end of the conical structure of the external threaded ring 203 is larger than the diameter of its lower end. The lower end of the external threaded ring 203 is formed with a lower end cover 200. The lower wall of the lower end cover 200 is coaxially formed with a chassis 202. A plurality of through holes 201 are opened on the lower end cover 200. An embedded edge 204 is formed at the lower end of the outer periphery of the lower end cover 200. The outer periphery of the embedded edge 204 has a conical structure. The diameter of the upper end of the conical structure of the embedded edge 204 is smaller than the diameter of the lower end. The embedded edge 204 is located in the embedded groove, and the conical structure of the embedded edge 204 contacts the conical structure of the embedded groove, and sealing grease is filled therebetween to enhance the sealing effect between the lower end cover 200 and the lower ring 205 to ensure the suction force of the through holes 201, etc.

[0040] A first pipe fitting 218 is passed through the upper extension tube 208, and a tapered ring 220 is formed at the lower end of the first pipe fitting 218. The inner diameter and outer diameter of the lower end of the tapered ring 220 are smaller than the inner diameter and outer diameter of the upper end thereof. The lower end of the tapered ring 220 is formed with an arcuate surface, and the tapered ring 220 extends into the tapered bucket 213. A retaining ring 233 is connected to the outer periphery of the first pipe fitting 218 by a threaded connection. A first inner ring 221 is formed at the upper end of the inner periphery of the first pipe fitting 218, and the lower end face of the first inner ring 221 is a tapered structure. The diameter of the upper end of the tapered structure of the first inner ring 221 is smaller than the diameter of the lower end thereof. An upper convex edge 240 is formed at the upper end of the first inner ring 221, and the outer periphery of the upper convex edge 240 is a tapered structure, and the diameter of the upper end of the tapered structure of the upper convex edge 240 is smaller than the diameter of the lower end thereof.

[0041] A first convex ring 219 is formed on the outer periphery of the lower end of the first tube fitting 218. The upper wall and the lower wall of the first convex ring 219 are both conical structures. The diameter of the upper end of the conical structure of the first convex ring 219 at the upper end is smaller than the diameter of its lower end, and the diameter of the upper end of the conical structure of the first convex ring 219 at the lower end is larger than the diameter of its lower end. The conical structure of the first convex ring 219 at the upper end contacts the inner wall of the first conical hole 217, and the contact point is coated with sealing grease. The conical structure of the first convex ring 219 at the lower end contacts the inner wall of the second conical hole 211, and the contact point is coated with sealing grease to improve the sealing effect between the first tube fitting 218 and the upper extension tube 208. At the same time, the setting of the first convex ring also improves the structural stability after the first tube fitting 218 and the upper extension tube 208 are connected.

[0042] The upper end of the first tube 218 is threadedly connected to a connecting tube 222. A spacer ring 223 is formed on the outer periphery of the connecting tube 222. The spacer ring 223 is located at the upper end of the first tube 218 and has a diameter greater than that of the first tube 218. The lower end of the inner periphery of the connecting tube 222 has a tapered structure, with the lower end diameter of the tapered structure of the connecting tube 222 being greater than the upper end diameter. The tapered structure of the lower end of the connecting tube 222 contacts the tapered structure of the upper lip 240, and the contact area is coated with sealing grease to enhance the sealing effect. The upper end of the inner periphery of the connecting tube 222 has a tapered structure, with the upper end diameter of the tapered structure of the connecting tube 222 being greater than the lower end diameter.

[0043] The outer periphery of the upper end of the connecting pipe 222 is connected to the second pipe fitting 224 through a thread, and the lower end of the inner periphery of the second pipe fitting 224 is formed with a second inner ring 225. The upper end of the second inner ring 225 is a conical structure, and the diameter of the upper end of the conical structure of the second inner ring 225 is larger than the diameter of its lower end. The lower end of the second inner ring 225 is formed with a lower convex edge 239, and the outer periphery of the lower convex edge 239 is a conical structure, and the diameter of the lower end of the conical structure of the lower convex edge 239 is smaller than the diameter of its upper end. The conical structure of the lower convex edge 239 contacts the conical structure of the upper end of the connecting pipe 222 to improve the sealing effect and stability after connection. The upper end of the second pipe fitting 224 is provided with a first convex edge 226.

[0044] The upper end of the second tube 224 is sleeved with a lower top ring 227 , and a slot is formed at the lower end of the lower top ring 227 . The upper end of the second tube 224 is inserted into the slot, and the first flange 226 is located in the slot. The upper end of the outer periphery of the lower top ring 227 is formed with a second flange 228 .

[0045] The outer periphery of the lower top ring 227 is sleeved with a third pipe fitting 229 to connect the second pipe fitting and the third pipe fitting through the lower top ring. The lower wall of the second flange 228 contacts the upper end of the third pipe fitting 229. The second pipe fitting 224 is located inside the third pipe fitting 229. The outer periphery of the third pipe fitting 229 is formed with a third flange 230. The outer periphery of the third flange 230 is provided with an annular groove 232 with a U-shaped cross-section. The outer periphery of the third flange 230 is formed with a fourth flange 231. The inner periphery of the lower end of the third pipe fitting 229 is formed with a sixth flange 241. The sixth flange 241 is located below the spacer ring 223. The spacer ring 223 is located inside the third pipe fitting 229. The spacer ring 223 plays a role in limiting the movement of the third pipe fitting 229.

[0046] A rotating ring 235 is sleeved on the third ridge 230, and a plurality of limiting rods 237 are connected to the outer periphery of the rotating ring 235 by threads. The inner end of the limiting rod 237 is a hemispherical structure, and the inner end of the limiting rod 237 extends into the annular groove 232. The rotating ring 235 is located above the fourth ridge 231, and an outer tube 236 is formed at the upper end of the rotating ring 235. A fifth ridge 238 is formed at the upper end of the outer tube 236, and an anti-slip pattern is formed on the outer periphery of the fifth ridge 238 to facilitate the rotation of the scraping member 3, thereby creating convenience for the scraping operation.

[0047] A first spring 234 is sleeved on the first tube 218, and the lower end of the first spring 234 abuts against the upper end of the retaining ring 233, and the upper end of the first spring 234 abuts against the lower end of the third tube 229. When scraping is completed, it can quickly return to its original position by the elastic force provided by the first spring 234.

[0048] like Figure 4As shown, the scraper 3 includes a fixed ring 3 fixed to the lower end of the outer tube 236, and multiple pairs of convex plates 31 are formed on the outer periphery of the fixed ring 3. A scraper 32 is provided between each pair of convex plates 31, and the upper end of the scraper 32 is fixed between each pair of convex plates 31 by screws.

[0049] The shutter 4 includes an outer opening and closing tube 400 that is threadedly connected to the inner circumference of the second pipe 224. The outer circumference of the outer opening and closing tube 400 is formed with a lower sealing ring 401 and an upper sealing ring 402 from bottom to top. The lower wall of the lower sealing ring 401 abuts against the upper end of the lower top ring 227. The lower sealing ring 401 and the upper sealing ring 402 are located inside the outer tube 236.

[0050] The inner circumference of the lower end of the opening and closing outer tube 400 is connected to the upper top ring 403 through a thread, and the outer circumference of the lower end of the upper top ring 403 is formed with a seventh ridge 404. The upper end of the seventh ridge 404 contacts the lower end of the opening and closing outer tube 400. The upper end of the inner circumference of the upper top ring 403 is a conical structure, and the upper end of the inner circumference of the upper top ring 403 is a conical structure. The diameter of the upper end of the conical structure of the upper top ring 403 is larger than the diameter of its lower end.

[0051] The inner circumference of the opening and closing outer tube 400 is connected to a sealing inner ring 407 through a thread, and an outer conical ring 408 is formed on the upper end of the sealing inner ring 407. The diameter of the upper end of the outer circumference of the outer conical ring 408 is smaller than the diameter of the lower end.

[0052] A middle connecting tube 405 is connected to the upper top ring 403 through a threaded connection, and a sealing cone ring 406 is formed on the outer periphery of the lower end of the middle connecting tube 405. The diameter of the lower end of the sealing cone ring 406 is smaller than the diameter of its upper end. The outer periphery of the sealing cone ring 406 contacts the inner wall of the conical structure of the upper top ring 403, and the middle connecting tube 405 is penetrated by the sealing inner ring 407. A connecting cover 409 is formed on the upper end of the middle connecting tube 405. The junction of the connecting cover 409 and the middle connecting tube 405 is a conical structure. The outer diameter of the connecting cover 409 is larger than the outer diameter of the middle connecting tube 405. A plurality of suction holes 410 are provided on the connecting cover 409 and the conical structure of the middle connecting tube 405, and there is an annular gap between the connecting cover 409 and the movable tube 411.

[0053] A movable tube 411 is movably provided in the opening and closing outer tube 400, and the connecting cover 409 is located in the movable tube 411. There is an annular gap between the connecting cover 409 and the movable tube 411. A sealing ridge 412 is formed on the inner periphery of the lower end of the movable tube 411, and a third tapered hole 414 is formed on the upper end of the sealing ridge 412. The diameter of the lower end of the third tapered hole 414 is smaller than the diameter of its upper end. A fourth tapered hole 413 is formed on the lower end of the sealing ridge 412. The diameter of the lower end of the fourth tapered hole 413 is larger than the diameter of its upper end. An eighth ridge 418 is formed on the upper end of the movable tube 411. The eighth ridge 418 is located above the upper sealing ring 402. A second spring 419 is sleeved on the movable tube 411. The upper end of the second spring 419 abuts against the lower wall of the eighth ridge 418, and the lower end of the second spring 419 abuts against the upper wall of the upper sealing ring 402.

[0054] When the middle connecting tube 405 is disconnected from the movable tube 411, the outer periphery of the conical structure of the connecting cover 409 and the middle connecting tube 405 contacts the inner wall of the third conical hole 414. When the middle connecting tube 405 is connected to the movable tube 411, the outer periphery of the outer conical ring 408 contacts the inner wall of the fourth conical hole 413, and the conical structure of the connecting cover 409 and the middle connecting tube 405 extends into the movable tube 411.

[0055] The upper end of the movable tube 411 is connected to the inner extension column 415 through a thread, and the upper end of the inner extension column 415 is formed with an upper cover 417. An L-shaped hole 416 is connected to the inner extension column 415 and the upper cover 417. The outer end of the L-shaped hole 416 is connected to the connecting pipe head 420 through a thread, and the L-shaped hole 416 is connected to the movable tube 411.

[0056] This embodiment goes through the following steps when applied: In step 01, the operator places the circuit board on the table and observes each half hole or half slot on the circuit board through a camera.

[0057] In step 02, the operator moves the circuit board half-hole burr removal tool to one side of the circuit board according to the observed situation, and directs the scraper 32 toward the defective half-hole or half-groove.

[0058] Step 03: Press the third tube 229 downward so that the scraper 32 is located in the half hole or half groove.

[0059] Step 04: The third tube 229 is rotated by the fifth protrusion 238 , and the scraper 32 scrapes off burrs and the like during the rotation process.

[0060] Step 05. During the scraping process, the operator presses the upper cover 417 to move the movable tube 411 downward. During the movement, the second spring 419 is compressed, and the outer conical ring 408 and the inner part of the fourth conical hole 413 are abutted. At the same time, in this process, the third conical hole 414 will be unblocked from the suction hole 410. Then, the suction pump will suction the L-shaped hole 416, the movable tube 411, etc. through the connecting pipe head 420. The debris generated by the scraping during the suction process will enter the cavity through the through hole 201 and the peripheral hole 206, and after entering, the debris will be blocked by the filter cloth 215 from entering the conical bucket 213, thereby achieving the purpose of debris collection.

[0061] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It is apparent that various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the present invention. Thus, the present invention is intended to encompass such modifications and variations as long as they fall within the scope of the claims and their equivalents.

Claims

1. A tool for removing burrs from a half hole of a circuit board, characterized in that: The invention comprises an extractor (2), a scraping member (3) is provided on the extractor (2), and an opener (4) is provided at the upper end of the extractor (2).

2. The circuit board half hole burr removal tool according to claim 1, characterized in that: The extractor (2) comprises a lower ring member (205), a plurality of peripheral holes (206) are provided on the outer periphery of the lower ring member (205), an upper end cover (207) is formed on the upper end of the lower ring member (205), an upper extension tube (208) is formed on the upper end cover (207), a conical bucket (213) is fixed to the inner wall of the upper end cover (207), a plurality of holes (214) are provided on the peripheral side of the conical bucket (213), the diameter of the lower end of the conical bucket (213) is smaller than the diameter of the upper end thereof, and a filter cloth (215) is provided on the outer periphery of the conical bucket (213); a lower end cover (200) is provided at the lower end of the lower ring member (205), and a plurality of through holes (201) are provided on the lower end cover (200); A first pipe member (218) is inserted into the upper extension tube (208), the upper end of the first pipe member (218) is connected to a connecting pipe (222) by a thread, the outer periphery of the upper end of the connecting pipe (222) is connected to a second pipe member (224) by a thread, the upper end of the second pipe member (224) is sleeved with a lower top ring (227), the outer periphery of the lower top ring (227) is sleeved with a third pipe member (229), the second pipe member (224) is located inside the third pipe member (229), the outer lower end of the third pipe member (229) is formed with a third flange (230), and the third flange (230) is sleeved with a rotating ring (235).

3. The circuit board half hole burr removal tool according to claim 2, characterized in that: The scraper (3) includes a fixed ring (3) fixed to the lower end of the outer tube (236), and a plurality of pairs of convex plates (31) are formed on the outer periphery of the fixed ring (3). A scraper (32) is provided between each pair of convex plates (31), and the upper end of the scraper (32) is fixed between each pair of convex plates (31) by screws.

4. The circuit board half hole burr removal tool according to claim 2, characterized in that: The shutter (4) includes an opening and closing outer tube (400) connected to the inner periphery of the second pipe (224) by a thread, the lower end of the opening and closing outer tube (400) is connected to an upper top ring (403), the upper top ring (403) is connected to a middle connecting tube (405), the upper end of the middle connecting tube (405) is formed with a connecting cover (409), the junction of the connecting cover (409) and the middle connecting tube (405) is a conical structure, a plurality of suction holes (410) are opened on the conical structure of the connecting cover (409) and the middle connecting tube (405), and a movable device (410) is provided in the opening and closing outer tube (400). A movable tube (411) is provided, a connecting cover (409) is located in the movable tube (411), an annular gap is provided between the connecting cover (409) and the movable tube (411), an upper end of the movable tube (411) is connected to an inner extension column (415) by a thread, an upper cover (417) is formed on the upper end of the inner extension column (415), an L-shaped hole (416) is connected to the inner extension column (415) and the upper cover (417), an outer end of the L-shaped hole (416) is connected to a connecting pipe head (420) by a thread, and the L-shaped hole (416) is connected to the movable tube (411).

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