A circuit board semi-hole burr scraping tool

Abstract

A circuit board semi-hole burr scraping tool, comprising a suction device, a scraping part is arranged on the suction device, and an opening and closing device is arranged on the upper end of the suction device. The scraping knife provided by the present application can rotate along the axial direction of the outer tube. In addition, if the bottom disc abuts against the machining table, the outer tube is in a vertical state at this time, and the scraping knife is in a vertical state at this time. When the scraping knife rotates, the vertical state of the scraping knife can be ensured, and unnecessary damage to the semi-hole is avoided. Moreover, during the scraping operation, the operator can conveniently adjust the vertical direction of the scraping knife according to the thickness of the board and the depth of the hole.

Description

Technical Field

[0001] This invention relates to the field of circuit board processing technology, and in particular to a tool for scraping burrs from half-holes in circuit boards. Background Technology

[0002] A metallized half-hole or half-groove is created by removing half of the metallized hole or groove on the edge of a pre-formed board, leaving a half-hole. Common methods for forming half-holes include drilling or routers. However, these machining processes cut into the metallized hole walls, easily resulting in burrs. Currently, the common method for removing burrs is to use a tool under a magnifying glass or handheld magnifying glass to scrape them off. This process can easily scratch the PCB board itself. Summary of the Invention

[0003] This invention provides a tool for removing burrs from half-holes of circuit boards, which overcomes the shortcomings of the prior art and solves the problems of debris not being handled in time and damage to metal vias during the scraping process. It has strong practicality.

[0004] In order to achieve the objectives of this invention, the following technologies are proposed:

[0005] A tool for removing burrs from half-holes of circuit boards includes a suction device with a scraping component and an opening / closing device at the upper end of the suction device.

[0006] Furthermore, the suction device includes a lower ring, an upper end cap is formed at the upper end of the lower ring, an upper extension tube is formed on the upper end cap, a connecting flange is formed on the outer periphery of the upper end of the upper extension tube, an upper ring is fixed on the connecting flange by screws, a plurality of peripheral holes are formed on the outer periphery of the lower ring, the peripheral holes are elongated, an inner groove is formed on the lower end face of the lower ring, the inner periphery of the inner groove is conical, and the diameter of the upper end of the inner groove is smaller than the diameter of its lower end.

[0007] The lower end of the inner circumference of the upper ring is formed with a first conical hole, the upper end of the inner circumference of the upper extension tube is formed with an enlarged hole, and the lower end of the enlarged hole is formed with a second conical hole. The diameter of the lower end of the second conical hole is smaller than the diameter of its upper end, and the diameter of the upper end of the first conical hole is smaller than the diameter of its lower end.

[0008] The inner wall of the upper cover is fixed with a conical hopper by screws. Multiple holes are opened on the periphery of the conical hopper. The lower end of the conical hopper is closed. The conical hopper is located directly below the upper extension tube. The diameter of the lower end of the conical hopper is smaller than the diameter of its upper end. A filter cloth is covered on the outer periphery of the conical hopper.

[0009] The lower end of the inner wall of the lower ring is connected to an external threaded ring by a thread. The inner wall of the external threaded ring has 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 cap. The lower wall of the lower end cap is coaxially formed with a base plate. Multiple through holes are opened on the lower end cap. The lower end of the outer periphery of the lower end cap is formed with an inset edge. The outer periphery of the inset edge has a conical structure. The diameter of the upper end of the conical structure of the inset edge is smaller than the diameter of its lower end. The inset edge is located in the inset groove, and the conical structure of the inset edge contacts the conical structure of the inset groove, and the space between them is filled with sealant.

[0010] A first pipe fitting is inserted inside the upper extension pipe. The lower end of the first pipe fitting is formed with a conical ring. The inner and outer diameters of the lower end of the conical ring are smaller than the inner and outer diameters of the upper end. The lower end of the conical ring is formed with an arc-shaped surface. The conical ring extends into the conical hopper. A retaining ring is connected to the outer circumference of the first pipe fitting by a thread. The upper end of the inner circumference of the first pipe fitting is formed with a first inner ring. The lower end face of the first inner ring is conical. The diameter of the upper end of the conical structure of the first inner ring is smaller than the diameter of the lower end. The upper end of the first inner ring is formed with an upper convex edge. The outer circumference of the upper convex edge is conical, and the diameter of the upper end of the conical structure of the upper convex edge is smaller than the diameter of the lower end.

[0011] The lower end of the first pipe fitting has a first convex ring formed on its outer periphery. The upper and lower walls of the first convex ring are both tapered structures. The diameter of the upper end of the tapered structure of the first convex ring is smaller than the diameter of its lower end, and the diameter of the upper end of the tapered structure of the first convex ring is larger than the diameter of its lower end. The tapered structure of the first convex ring at the upper end contacts the inner wall of the first tapered hole, and the contact area is coated with sealant. The tapered structure of the first convex ring at the lower end contacts the inner wall of the second tapered hole, and the contact area is coated with sealant.

[0012] The upper end of the first pipe fitting is connected to a connecting pipe via a thread. 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 has a tapered structure. The diameter of the lower end of the tapered structure of the connecting pipe is larger than the diameter of its upper end. The tapered structure at the lower end of the connecting pipe contacts the tapered structure of the upper flange. The contact area is coated with sealant. The upper end of the inner periphery of the connecting pipe has a tapered structure. The diameter of the upper end of the tapered structure of the connecting pipe is larger than the diameter of its lower end.

[0013] The upper outer circumference of the connecting pipe is connected to a second pipe fitting by a thread. The lower inner circumference of the second pipe fitting is formed with a second inner ring. The upper end of the second inner ring is tapered, and the diameter of the upper end of the tapered structure of the second inner ring is larger than the diameter of its lower end. The lower end of the second inner ring is formed with a lower convex edge. The outer circumference of the lower convex edge is tapered, and the diameter of the lower end of the tapered structure of the lower convex edge is smaller than the diameter of its upper end. The tapered structure of the lower convex edge contacts the tapered structure at the upper end of the connecting pipe. The upper end of the second pipe fitting is provided with a first convex edge.

[0014] The upper end of the second pipe fitting is fitted 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 fitting is inserted into the slot, and the first protrusion is located in the slot. The upper outer periphery of the lower top ring is formed with a second protrusion.

[0015] A third tube is fitted around the outer periphery of the lower top ring. The lower wall of the second protrusion contacts the upper end of the third tube. The second tube is located inside the third tube. A third protrusion is formed at the lower end of the outer periphery of the third tube. A U-shaped groove is formed on the outer periphery of the third protrusion. A fourth protrusion is formed at the lower end of the outer periphery of the third protrusion. A sixth protrusion is formed on the inner periphery of the lower end of the third tube. The sixth protrusion is located below the spacer ring, which is located inside the third tube.

[0016] A rotating ring is fitted on the third convex edge. Multiple limiting rods are threadedly connected to the outer circumference of the rotating ring. The inner end of the limiting rod has a hemispherical structure and extends into the ring groove. The rotating ring is located above the fourth convex edge. An outer tube is formed at the upper end of the rotating ring, and a fifth convex edge is formed at the upper end of the outer tube. The outer circumference of the fifth convex edge is formed with anti-slip patterns.

[0017] A first spring is fitted onto the first pipe fitting, with the lower end of the first spring abutting against the upper end of the retaining ring and the upper end of the first spring abutting against the lower end of the third pipe fitting.

[0018] Furthermore, the scraping component includes a retaining ring fixed to the lower end of the outer tube. Multiple pairs of protrusions are formed on the outer periphery of the retaining ring, and a scraper is provided between each pair of protrusions. The upper end of the scraper is fixed between each pair of protrusions by screws.

[0019] Furthermore, the opening and closing device includes an opening and closing outer tube that is threadedly connected to the inner circumference of the second pipe fitting. 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. The lower sealing ring and the upper sealing ring are located inside the outer tube.

[0020] The lower end of the opening and closing outer tube is connected to an upper top ring by a thread. The lower end of the upper top ring has a seventh protrusion formed on its outer circumference. The upper end of the seventh protrusion contacts the lower end of the opening and closing outer tube. The upper end of the inner circumference of the upper top ring has a conical structure, and the diameter of the upper end of the conical structure of the upper top ring is larger than the diameter of its lower end.

[0021] The inner circumference of the opening and closing outer tube is connected to a sealing inner ring by a thread. The upper end of the sealing inner ring is formed with an outer conical ring, and the diameter of the upper end of the outer conical ring is smaller than the diameter of its lower end.

[0022] A connecting tube is threaded into the upper ring. A sealing cone ring is formed on the lower outer circumference of the connecting tube. The diameter of the lower end of the sealing cone ring is smaller than the diameter of its upper end. The outer circumference of the sealing cone ring contacts the inner wall of the conical structure of the upper ring. The connecting tube passes through the inner sealing ring. A connecting cover is formed on the upper end of the connecting tube. The junction of the connecting cover and the connecting tube is conical. The outer diameter of the connecting cover is larger than the outer diameter of the connecting tube. Multiple suction holes are opened on the conical structure of the connecting cover and the connecting tube. There is an annular gap between the connecting cover and the movable tube.

[0023] The outer tube is equipped with a movable tube, and the connecting cover is located inside the movable tube. There is an annular gap between the connecting cover and the movable tube. The lower end of the movable tube has a sealing flange formed on its inner circumference. The upper end of the sealing flange has a third conical hole formed. The diameter of the lower end of the third conical hole is smaller than the diameter of its upper end. The lower end of the sealing flange has a fourth conical hole formed. The diameter of the lower end of the fourth conical hole is larger than the diameter of its upper end. The upper end of the movable tube has an eighth flange formed. The eighth flange is located above the upper sealing ring. A second spring is sleeved on the movable tube. The upper end of the second spring abuts against the lower wall of the eighth flange, and the lower end of the second spring abuts against the upper wall of the upper sealing ring.

[0024] When the connecting pipe and the movable pipe are disconnected, the outer periphery of the conical structure of the connecting cover and the connecting pipe contacts the inner wall of the third conical hole. When the connecting pipe and the movable pipe are connected, the outer periphery of the outer conical ring contacts the inner wall of the fourth conical hole, and the conical structure of the connecting cover and the connecting pipe extends into the movable pipe.

[0025] The upper end of the movable tube is connected to an inner extension column via a thread. The upper end of the inner extension column is formed with a top cover. An L-shaped hole is connected to the inner extension column and the top cover. The outer end of the L-shaped hole is connected to a connecting tube head via a thread. The L-shaped hole is connected to the movable tube.

[0026] The advantages of the above technical solution are:

[0027] The scraper provided by this invention can rotate along the axial direction 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 will also be in a vertical position. This ensures the scraper remains vertical during rotation, thus avoiding unnecessary damage to the half-hole. Moreover, during the scraping action, the operator can easily adjust the vertical direction of the scraper according to the thickness of the plate and the depth of the hole.

[0028] The suction component provided by this invention, consisting of a lower ring, an upper end cap, and a lower end cap, can not only absorb debris through the peripheral holes but also suck up debris that has fallen onto the table surface through the through holes using negative pressure, thereby placing the debris within the cavity formed by the lower ring, upper end cap, and lower end cap. The conical hopper and filter cloth prevent debris from entering the suction pump and related pipes, thus avoiding blockage. Furthermore, to prevent the filter cloth from becoming clogged due to increased debris, its internal support component is designed with a conical structure. To effectively draw debris from the table surface into the cavity, the lower end face of the lower end cap is also designed with a conical structure, and the contact between the base and the table surface provides space for debris to enter the cavity.

[0029] The present invention provides an opening and closing device that allows operators to ventilate in a timely manner, thereby facilitating the suction of debris, and the connection can be made simply by pressing during operation. Attached Figure Description

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings.

[0031] Figure 1 A three-dimensional structural diagram of a tool for removing burrs from half-holes in circuit boards is shown.

[0032] Figure 2 A cross-sectional view of a tool for removing burrs from half-holes in circuit boards is shown.

[0033] Figure 3 A three-dimensional structural diagram of the scraper is shown.

[0034] Figure 4 A cross-sectional view of the opening and closing device is shown.

[0035] Figure 5 A first cross-sectional view of the upper part of the extractor is shown.

[0036] Figure 6 A second cross-sectional view of the upper part of the extractor is shown.

[0037] Figure 7 A cross-sectional view of the lower part of the extractor is shown. Detailed Implementation

[0038] like Figure 1 As shown, a tool for removing burrs from half-holes of a circuit board includes a suction device 2, which is provided with a scraping component, and an opening and closing device 4 is provided at the upper end of the suction device 2.

[0039] like Figure 2 , Figures 5 to 7As shown, the suction device 2 includes a lower ring 205, an upper end cap 207 is formed on the upper end of the lower ring 205, an upper extension tube 208 is formed on the upper end cap 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 on the connecting flange 209 by screws, a plurality of peripheral holes 206 are opened on the outer periphery of the lower ring 205, the peripheral holes 206 are elongated, and an inner groove is opened on the lower end face of the lower ring 205. The inner periphery of the inner groove is conical, and the diameter of the upper end of the inner groove is smaller than the diameter of its lower end.

[0040] The lower end of the inner circumference of the upper ring 216 is formed with a first tapered hole 217, the upper end of the inner circumference of the upper extension tube 208 is formed with an enlarged hole 210, the lower end of the enlarged hole 210 is formed with a second tapered hole 211, 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.

[0041] The inner wall of the upper cover 207 is fixed with a conical hopper 213 by screws. Multiple holes 214 are opened on the periphery of the conical hopper 213. The lower end of the conical hopper 213 is closed. The conical hopper 213 is located directly below the upper extension tube 208. The diameter of the lower end of the conical hopper 213 is smaller than the diameter of its upper end. A filter cloth 215 is covered on the outer periphery of the conical hopper 213.

[0042] The lower end of the inner wall of the lower ring 205 is connected to an external threaded ring 203 by 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 cap 200. The lower wall of the lower end cap 200 is coaxially formed with a base 202. The lower end cap 200 has multiple through holes 201. The lower end of the outer periphery of the lower end cap 200 is formed with an inner edge 204. The outer periphery of the inner edge 204 has a conical structure. The diameter of the upper end of the conical structure of the inner edge 204 is smaller than the diameter of its lower end. The inner edge 204 is located in an inner groove, and the conical structure of the inner edge 204 contacts the conical structure of the inner groove. The space between them is filled with sealant to improve the sealing effect between the lower end cap 200 and the lower ring 205, so as to ensure the suction of the through holes 201, etc.

[0043] A first pipe fitting 218 is inserted inside the upper extension tube 208. A conical ring 220 is formed at the lower end of the first pipe fitting 218. The inner and outer diameters of the lower end of the conical ring 220 are smaller than the inner and outer diameters of its upper end. The lower end of the conical ring 220 is formed with an arc-shaped surface. The conical ring 220 extends into the conical hopper 213. A retaining ring 233 is threadedly connected to the outer periphery of the first pipe fitting 218. A first inner ring 221 is formed at the upper end of the inner periphery of the first pipe fitting 218. The lower end face of the first inner ring 221 has a conical structure. The diameter of the upper end of the conical structure of the first inner ring 221 is smaller than the diameter of its lower end. An upper convex edge 240 is formed at the upper end of the first inner ring 221. The outer periphery of the upper convex edge 240 has a conical structure, and the diameter of the upper end of the conical structure of the upper convex edge 240 is smaller than the diameter of its lower end.

[0044] The lower end of the first pipe fitting 218 has a first convex ring 219 formed on its outer periphery. The upper and lower walls of the first convex ring 219 are both tapered structures. The diameter of the upper end of the tapered structure of the first convex ring 219 is smaller than the diameter of its lower end, and the diameter of the upper end of the tapered structure of the first convex ring 219 is larger than the diameter of its lower end. The tapered structure of the first convex ring 219 at the upper end contacts the inner wall of the first tapered hole 217, and the contact area is coated with sealant. The tapered structure of the first convex ring 219 at the lower end contacts the inner wall of the second tapered hole 211, and the contact area is coated with sealant to improve the sealing effect between the first pipe fitting 218 and the upper extension pipe 208. At the same time, the setting of the first convex ring also improves the structural stability after the first pipe fitting 218 and the upper extension pipe 208 are connected.

[0045] The upper end of the first pipe fitting 218 is connected to a connecting pipe 222 via a thread. A spacer ring 223 is formed on the outer periphery of the connecting pipe 222. The spacer ring 223 is located at the upper end of the first pipe fitting 218, and its diameter is larger than that of the first pipe fitting 218. The lower end of the inner periphery of the connecting pipe 222 has a tapered structure, and the diameter of the lower end of this tapered structure is larger than the diameter of its upper end. The tapered structure at the lower end of the connecting pipe 222 contacts the tapered structure of the upper convex edge 240. Sealing grease is applied to the contact area to improve the sealing effect. The upper end of the inner periphery of the connecting pipe 222 also has a tapered structure, and the diameter of the upper end of this tapered structure is larger than the diameter of its lower end.

[0046] The upper outer periphery of the connecting pipe 222 is connected to the second pipe fitting 224 by threads. The lower 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 has a tapered structure, and the diameter of the upper end of the tapered 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. The outer periphery of the lower convex edge 239 has a tapered structure, and the diameter of the lower end of the tapered structure of the lower convex edge 239 is smaller than the diameter of its upper end. The tapered structure of the lower convex edge 239 contacts the tapered structure at the upper end of the connecting pipe 222 to improve the sealing effect and the stability after connection. The upper end of the second pipe fitting 224 is provided with a first convex edge 226.

[0047] The upper end of the second tube 224 is fitted with a lower top ring 227, and the lower end of the lower top ring 227 is provided with a slot. The upper end of the second tube 224 is inserted into the slot, and the first protrusion 226 is located in the slot. The upper outer periphery of the lower top ring 227 is formed with a second protrusion 228.

[0048] A third tube 229 is fitted around the outer periphery of the lower top ring 227 to connect the second and third tubes. The lower wall of the second protrusion 228 contacts the upper end of the third tube 229. The second tube 224 is located inside the third tube 229. A third protrusion 230 is formed at the lower end of the outer periphery of the third tube 229. A U-shaped groove 232 is formed on the outer periphery of the third protrusion 230. A fourth protrusion 231 is formed at the lower end of the outer periphery of the third protrusion 230. A sixth protrusion 241 is formed on the inner periphery of the lower end of the third tube 229. The sixth protrusion 241 is located below the spacer ring 223. The spacer ring 223 is located inside the third tube 229 and limits the movement of the third tube 229.

[0049] A rotating ring 235 is fitted on the third protrusion 230. Multiple limiting rods 237 are threadedly connected to the outer periphery of the rotating ring 235. The inner end of the limiting rod 237 has a hemispherical structure and extends into the ring groove 232. The rotating ring 235 is located above the fourth protrusion 231. An outer tube 236 is formed at the upper end of the rotating ring 235. A fifth protrusion 238 is formed at the upper end of the outer tube 236. The outer periphery of the fifth protrusion 238 is formed with anti-slip patterns to facilitate the rotation of the scraping part and thus make the scraping operation more convenient.

[0050] A first spring 234 is fitted on the first pipe fitting 218. 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 pipe fitting 229. After scraping is completed, the pipe fitting can be quickly returned to its original position by the elastic force provided by the first spring 234.

[0051] like Figure 4As shown, the scraping component includes a fixing ring 3 fixed to the lower end of the outer tube 236. Multiple pairs of protrusions 31 are formed on the outer periphery of the fixing ring 3. A scraper 32 is provided between each pair of protrusions 31. The upper end of the scraper 32 is fixed between each pair of protrusions 31 by screws.

[0052] The opening and closing device 4 includes an opening and closing outer tube 400 that is threadedly connected to the inner periphery of the second pipe fitting 224. The outer periphery of the opening and closing outer tube 400 is formed from bottom to top with a lower sealing ring 401 and an upper sealing ring 402. 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.

[0053] The lower end of the opening and closing outer tube 400 is connected to an upper top ring 403 by a thread. The lower end of the upper top ring 403 has a seventh protruding edge 404 formed on its outer circumference. The upper end of the seventh protruding edge 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 has a conical structure, and 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.

[0054] The inner circumference of the opening and closing outer tube 400 is connected to a sealing inner ring 407 by a thread. The upper end of the sealing inner ring 407 is formed with an outer conical ring 408. The diameter of the upper end of the outer conical ring 408 is smaller than the diameter of its lower end.

[0055] A connecting tube 405 is threaded into the upper ring 403. A sealing cone ring 406 is formed on the outer periphery of the lower end of the 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 cone-shaped structure of the upper ring 403. The connecting tube 405 passes through the inner sealing ring 407. A connecting cover 409 is formed on the upper end of the connecting tube 405. The junction of the connecting cover 409 and the connecting tube 405 is a cone-shaped structure. The outer diameter of the connecting cover 409 is larger than the outer diameter of the connecting tube 405. Multiple suction holes 410 are opened on the cone-shaped structure of the connecting cover 409 and the connecting tube 405. There is an annular gap between the connecting cover 409 and the movable tube 411.

[0056] An movable tube 411 is provided inside the opening and closing outer tube 400. A connecting cover 409 is located inside the movable tube 411, and there is an annular gap between the connecting cover 409 and the movable tube 411. A sealing flange 412 is formed on the inner circumference of the lower end of the movable tube 411. A third conical hole 414 is formed on the upper end of the sealing flange 412. The diameter of the lower end of the third conical hole 414 is smaller than the diameter of its upper end. A fourth conical hole 413 is formed on the lower end of the sealing flange 412. The diameter of the lower end of the fourth conical hole 413 is larger than the diameter of its upper end. An eighth flange 418 is formed on the upper end of the movable tube 411. The eighth flange 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 flange 418, and the lower end of the second spring 419 abuts against the upper wall of the upper sealing ring 402.

[0057] When the connecting pipe 405 is disconnected from the movable pipe 411, the outer periphery of the conical structure of the connecting cover 409 and the connecting pipe 405 contacts the inner wall of the third conical hole 414. When the connecting pipe 405 is connected to the movable pipe 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 connecting pipe 405 extends into the movable pipe 411.

[0058] The upper end of the movable tube 411 is connected to an inner extension column 415 by a thread. The upper end of the inner extension column 415 is formed with a top cover 417. An L-shaped hole 416 is connected to the inner extension column 415 and the top cover 417. The outer end of the L-shaped hole 416 is connected to a connecting tube head 420 by a thread. The L-shaped hole 416 is connected to the movable tube 411.

[0059] This embodiment involves the following steps when applied:

[0060] 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.

[0061] Step 02: Based on the observation, the operator moves the circuit board half-hole burr removal tool to one side of the circuit board and makes the scraper 32 face the defective half-hole or half-groove.

[0062] Step 03: Press down on the third fitting 229 so that the scraper 32 is located in the half hole or half groove.

[0063] Step 04: The third pipe fitting 229 is rotated by the fifth convex edge 238, and the scraper 32 removes burrs and other debris during the rotation.

[0064] Step 05: During the scraping process, the operator presses the top cover 417 to move the movable tube 411 downwards. During this movement, the second spring 419 is compressed, and the outer conical ring 408 and the interior of the fourth conical hole 413 abut against each other. At the same time, the third conical hole 414 is removed from blocking the suction hole 410. Then, the suction pump will suck up the L-shaped hole 416, movable tube 411, etc. through the connecting head 420. The debris generated during the suction process will enter the cavity through the through hole 201 and the peripheral hole 206. After entering, the debris will be blocked by the filter cloth 215 from entering the conical hopper 213, thereby achieving the purpose of debris collection.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A tool for scraping burrs from half-holes in circuit boards, characterized in that, Includes a suction device (2), which is equipped with a scraping part and an opening and closing device (4) at the upper end of the suction device (2). The suction device (2) includes a lower ring (205), with multiple peripheral holes (206) on the outer periphery of the lower ring (205), an upper end cap (207) formed at the upper end of the lower ring (205), an upper extension tube (208) formed on the upper end cap (207), a conical bucket (213) fixed on the inner wall of the upper end cap (207), multiple holes (214) on the periphery of the conical bucket (213), the diameter of the lower end of the conical bucket (213) being smaller than the diameter of its upper end, and a filter cloth (215) covering the outer periphery of the conical bucket (213); a lower end cap (200) at the lower end of the lower ring (205), with multiple through holes (201) on the lower end cap (200); The upper extension tube (208) is provided with a first pipe fitting (218). The upper end of the first pipe fitting (218) is connected to a connecting pipe (222) by a thread. The upper end of the connecting pipe (222) is connected to a second pipe fitting (224) by a thread. The upper end of the second pipe fitting (224) is fitted with a lower top ring (227). The lower top ring (227) is fitted with a third pipe fitting (229) on its outer periphery. The second pipe fitting (224) is located inside the third pipe fitting (229). The lower end of the outer periphery of the third pipe fitting (229) is formed with a third protrusion (230). A rotating ring (235) is fitted on the third protrusion (230). The scraping component includes a fixing ring (3) fixed to the lower end of the outer tube (236). Multiple pairs of protrusions (31) are formed on the outer periphery of the fixing ring (3). A scraper (32) is provided between each pair of protrusions (31). The upper end of the scraper (32) is fixed between each pair of protrusions (31) by screws.

2. The circuit board half-hole burr removal tool according to claim 1, characterized in that, The opening and closing device (4) includes an opening and closing outer tube (400) connected to the inner circumference of the second pipe fitting (224) by a thread. The lower end of the opening and closing outer tube (400) is connected to an upper top ring (403), and 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. Multiple suction holes (410) are opened on the conical structure of the connecting cover (409) and the middle connecting tube (405). The opening and closing outer tube (400) is movably equipped with... There is a movable tube (411), and a connecting cover (409) is located inside the movable tube (411). There is an annular gap between the connecting cover (409) and the movable tube (411). The upper end of the movable tube (411) is connected to an inner extension column (415) by a thread. The upper end of the inner extension column (415) is formed with a top cover (417). The inner extension column (415) and the top cover (417) are connected by an L-shaped hole (416). The outer end of the L-shaped hole (416) is connected to a connecting tube head (420) by a thread. The L-shaped hole (416) is connected to the movable tube (411).

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