Printed circuit board milling cutter device
By designing a gong knife device for printing circuit boards, the three-coordinate moving components and the rotation driving components of the gong knife are used, and the rotational state is displayed by combining the two-color light-emitting diodes to display the rotation state, the problem of half-pore burrs of the PTH is solved, and an efficient and low-cost production process is achieved.
Patent Information
- Application Number
- CN202421460806.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-25
AI Technical Summary
When producing printed circuit boards, the prior art is difficult to avoid the occurrence of burrs in the half-side hole of PTH, resulting in problems such as unstable welding, dummy welding and short-bridge. The secondary gong board has a long process, a lot of time and high cost.
A printed circuit board gong knife device is designed, using the three-coordinate moving component of the gong knife and the gong knife rotation driving component. The gong knife uses the opposite rotation state and the harness trajectory to process the left intersection point and the right intersection point, and the rotation state is displayed through the two-color light-emitting diode to ensure that the gong knife rotates correctly.
It effectively avoids the burrs of the half-side hole of PTH, ensures welding performance, reduces production time and cost, and realizes the one-time molding of the half-side hole of PTH without the need for a secondary gong plate.
Smart Images
Figure CN222928580U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printed circuit board production, and particularly relates to a printed circuit board milling cutter device. Background Art
[0002] The PTH holes of printed circuit boards are metallized holes; PTH is the abbreviation of Plating through hole. The PTH half hole is to cut the PTH hole in half; the PTH half hole is also called a postage stamp type electroplated semi-circular hole. The PTH half hole can be used as a pin and directly welded to the surface pads of another printed circuit board by means of solder, so as to achieve electrical connection. Processing PTH half holes on printed circuit boards can make the circuit boards denser. The PTH half holes can be used in dense parts and more components can be installed in the limited space of the circuit board, which will improve the performance and power of the entire circuit board.
[0003] Currently, the production process of printed circuit boards with PTH half holes mainly includes blanking, internal pressing, drilling, copper plating on the sink plate, outer layer circuit, pattern electroplating, milling out PTH half holes, stripping film, etching and tin stripping, outer layer AOI, solder mask printing, characters, milling the outer shape, continuity testing, final inspection, and packaging. Among them, milling out PTH half holes after the pattern electroplating step adopts a secondary milling process. The secondary milling process is to first use a large-diameter milling cutter to horizontally feed along the outer shape line to mill the PTH hole into a PTH half hole, and then replace it with a small-diameter milling cutter to repair the burrs of the PTH half hole. Burrs are also called flash or burrs. Milling cutters are also called end mills. Among them, the milling of the outer shape step includes dividing the originally large circuit board into multiple small independent circuit board units
[0004] Refer to Figure 1, the current situation of making PTH half-holes; the printed circuit board 1 has a reserved area 11 and a removal area 12, the reserved area 11 is located in front of the removal area 12, and an outline 13 is set between the reserved area 11 and the removal area 12. The circuit board 1 has a PTH hole 14, and the PTH hole 14 intersects with the outline 13 to form a left intersection 141 and a right intersection 142. Half of the PTH hole 14 is in the reserved area 11, and the other half is in the removal area 12. The gong cutter 224 moves in a straight line in the middle removal area 13, and the gong cutter is usually right-handed, that is, it rotates clockwise. The large diameter gong cutter 224 moves horizontally from left to right along the contour line 14. When it hits the left intersection 141, the left intersection 141 is subjected to a rightward shear force. Ideally, the shear force cuts off the material of the left intersection 141. However, the copper layer 16 attached to the hole wall is ductile and tough. When the gong cutter 224 cuts the copper layer 16 of the left intersection 141, it is easy to produce burrs 17 due to the separation of the copper layer or the extension of the copper layer. When the gong cutter 224 cuts the right intersection 142, the copper layer of the right intersection is against the substrate layer, which effectively prevents the copper layer from separating and extending, so that no burrs are produced. The gong cutter with a small diameter is used to repair the burrs.
[0005] The burrs left on the half-hole of the PTH will cause problems such as loose solder joints, cold solder joints, bridge short circuits, etc. during the subsequent welding process. The disadvantages of the secondary gong plate process are that the production process is long and time-consuming, and the gong cutter needs to be switched to repair the burrs generated during the gong hole process, which has a high production cost.
[0006] Therefore, how to avoid burrs when manufacturing PTH half-holes, save manufacturing time, and reduce manufacturing costs is a technical problem that needs to be solved urgently in the current field. Utility Model Content
[0007] The technical problem to be solved by the utility model is to provide a printed circuit board gong cutter device, which can avoid burrs when making PTH half-holes, save production time and reduce production costs.
[0008] The utility model is implemented as follows: a printed circuit board gong cutter device, comprising:
[0009] Frame, gong cutter three-coordinate moving assembly, gong cutter rotation drive assembly, workpiece positioning assembly and printed circuit board;
[0010] The milling cutter rotation drive assembly includes a base, a rotation drive motor, a main shaft, a milling cutter, and a dual-color light-emitting diode. The base is connected to the frame through the milling cutter three-coordinate movement assembly. The body of the rotation drive motor is fixedly connected to the base. The output shaft of the rotation drive motor is connected to the milling cutter through the main shaft. The dual-color light-emitting diode is electrically connected to the rotation drive motor. When the rotation drive motor makes the milling cutter in a right-handed rotation state, the dual-color light-emitting diode emits light of a first color. When the rotation drive motor makes the milling cutter in a left-handed rotation state, the dual-color light-emitting diode emits light of a second color;
[0011] The workpiece positioning assembly is fixedly connected to the frame. The printed circuit board is placed on the workpiece positioning assembly. The printed circuit board has a reserved area and a removed area. The reserved area is in front of the removed area. An outline is set between the reserved area and the removed area. The circuit board has PTH holes. The PTH holes intersect the outline to form a left intersection point and a right intersection point. Half of the PTH holes are in the reserved area and the other half are in the removed area;
[0012] The milling cutter three-coordinate movement assembly makes the milling cutter feed in the removed area. When the milling cutter moves from left to right along the outline and mills the right intersection point, the milling cutter is in a right-handed rotation state. When the milling cutter moves from right to left along the outline and mills the left intersection point, the milling cutter is in a left-handed rotation state.
[0013] Further, the rotation drive motor is a DC motor. The dual-color light-emitting diode is formed by reverse-parallel connection of two diodes with different light-emitting colors. The dual-color light-emitting diode is connected in series with the rotation drive motor.
[0014] Further, the first color light is red light and the second color light is green light.
[0015] Further, the milling cutter rotation drive assembly further includes a DC power supply, an MCU, and a double-contact relay. The double-contact relay includes a base plate, a vertical rod, an armature, an electromagnet coil, a movable plate, a tension spring, an electrode plate, a first contact plate, and a second contact plate;
[0016] The vertical rod is fixedly connected to the base plate. The movable plate is hinged to the vertical rod. The left end of the movable plate is connected to the base plate through the tension spring. The right end of the movable plate is fixedly connected to the electrode plate. The electromagnet coil is fixedly connected to the base plate. The armature is fixedly connected to the middle of the movable plate. The armature is located above the electromagnet coil. The first contact plate is fixedly arranged above the electrode plate. The second contact plate is fixedly arranged below the electrode plate;
[0017] Two ends of the electromagnet coil are electrically connected to the MCU;
[0018] The electrode plate has a left electrode and a right electrode, the left electrode is connected to the first power line of the rotation drive motor, and the right electrode is connected to the second power line of the rotation drive motor;
[0019] The first contact plate has a first left contact and a first right contact, the first left contact is connected to the positive electrode of the DC power supply, and the first right contact is connected to the negative electrode of the DC power supply;
[0020] The second contact plate has a second left contact and a second right contact, the second left contact is connected to the negative electrode of the DC power supply, and the second right contact is connected to the positive electrode of the DC power supply.
[0021] Furthermore, the workpiece positioning assembly includes a support seat, positioning pins and a vacuum suction cup, the support seat is fixedly connected to the frame, a plurality of positioning pins and vacuum suction cups are fixedly arranged on the support seat, the circuit board has a positioning hole, and the positioning hole cooperates with the positioning pin.
[0022] Compared with the background technology, the utility model has the following advantages: the gong cutter moves in the removal area, and for the left intersection and the right intersection, the gong cutter adopts opposite rotation states and opposite tool movement trajectories respectively; the gong cutter successively cuts the left intersection and the right intersection, and at the intersection, the gong cutter first contacts the copper layer of the PTH hole and then contacts the substrate layer of the PTH hole; with the help of a two-color light emitting diode, it is convenient for the staff to understand the current rotation state of the gong cutter. When it is found that the gong cutter does not make a correct turn at the designated intersection position of the PTH hole, the staff can quickly shut down the device and then correct the rotation state of the gong cutter; in this way, burrs are avoided when making the PTH half-side hole, and good welding performance of the PTH half-side hole is guaranteed; the PTH half-side hole is formed once by the gong cutter, and there is no need to switch the gong cutter for secondary gong plate, which saves production time and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.
[0024] Figure 1 It is a schematic diagram of the tool path of the gong knife in the removal area in the background technology.
[0025] Figure 2 It is a schematic diagram of the background technology in which a gong cutter moves along the contour line to produce burrs on the half-side hole of a PTH.
[0026] Figure 3 The utility model is a structural schematic diagram of a printed circuit board gong cutter device.
[0027] Figure 4 It is a schematic structural diagram of a workpiece positioning component in an embodiment of the present utility model.
[0028] Figure 5 It is a schematic connection diagram of a double-contact relay, a DC motor, a two-color light-emitting diode, an MCU, and a DC power supply in an embodiment of the present utility model.
[0029] Figure 6 It is a schematic diagram of the right-handed state of the milling cutter and the tool path in the removal area.
[0030] Figure 7 It is a schematic diagram of the left-handed state of the milling cutter and the tool path in the removal area.
[0031] Figure 8 It is a result diagram of manufacturing a PTH half hole in an embodiment of the present utility model.
[0032] Figure 9 It is a schematic position diagram of the inclined length on the tool path.
[0033] Reference numerals: printed circuit board 1; reserved area 11; removal area 12; outer contour line 13; PTH hole 14; left intersection point 141; right intersection point 142; PTH half hole 15; copper layer 16; burr 17; frame 2; milling cutter three-coordinate moving component 21; first convex line 211; second convex line 212; milling cutter rotation driving component 22; base 221; rotation driving motor 222; main shaft 223; milling cutter 224; two-color light-emitting diode 225; DC power supply 226; MCU 227; workpiece positioning component 23; support seat 231; positioning pin 232; vacuum chuck 233; double-contact relay 24; bottom plate 241; vertical rod 242; armature 243; electromagnet coil 244; movable plate 245; tension spring 246; electrode plate 247; left electrode 2471; right electrode 2472; first contact plate 248; second contact plate 249. Specific embodiments
[0034] An embodiment of the present utility model provides a printed circuit board milling cutter device, which overcomes the disadvantages of the secondary milling process in the background technology, realizes that with the help of a two-color light-emitting diode, it is convenient for staff to understand the current rotation state of the milling cutter, avoids generating burrs when manufacturing PTH half holes, and ensures good welding performance of PTH half holes; the PTH half holes are formed in one step by the milling cutter, without switching the milling cutter for secondary milling, saving manufacturing time and reducing manufacturing costs.
[0035] The general idea of the technical solution of the embodiment of the present utility model is as follows:
[0036] Utilize the left - hand rotation and right - hand rotation functions of the router rotation drive assembly, and cooperate with the specific tool - path of the router three - coordinate movement assembly; the router three - coordinate movement assembly enables the router to perform tool - path movement in the removal area, first routing the right intersection point and then the left intersection point; when the router moves from left to right along the contour line and routes the right intersection point, the router is in the right - hand rotation state, and during this process, the router bypasses the right intersection point; when the router moves from right to left along the contour line and routes the left intersection point, the router is in the left - hand rotation state, and during this process, the router bypasses the right intersection point.
[0037] At the intersection point, the router first contacts the copper layer of the PTH hole and then contacts the substrate layer of the PTH hole. As long as the router is not worn and the cutting force is sufficient, the copper layer on the hole wall of the PTH half - hole will not curl up. When making the PTH half - hole, burrs are avoided, good welding performance is ensured, and the quality requirements of customers are met.
[0038] In order to better understand the above - mentioned technical solution, the above - mentioned technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.
[0039] Refer to Figures 1 to 9 , the preferred embodiment of the present utility model.
[0040] A printed circuit board router device, comprising:
[0041] A frame 2, a router three - coordinate movement assembly 21, a router rotation drive assembly 22, a workpiece positioning assembly 23, and a printed circuit board 1;
[0042] The router rotation drive assembly 22 includes a base 221, a rotation drive motor 222, a main shaft 223, a router 224, and a dual - color light - emitting diode 225. The base 221 is connected to the frame 2 through the router three - coordinate movement assembly 21. The body of the rotation drive motor 222 is fixedly connected to the base 221. The output shaft of the rotation drive motor 222 is connected to the router 224 through the main shaft 223. The dual - color light - emitting diode 225 is electrically connected to the rotation drive motor 222. When the rotation drive motor 222 makes the router 224 in the right - hand rotation state, the dual - color light - emitting diode 225 emits light of the first color. When the rotation drive motor 222 makes the router 224 in the left - hand rotation state, the dual - color light - emitting diode 225 emits light of the second color;
[0043] The workpiece positioning component 23 is fixedly connected to the frame 2. The printed circuit board 1 is placed on the workpiece positioning component 23. The printed circuit board 1 has a reserved area 11 and a removed area 12. The reserved area 11 is in front of the removed area 12. An outline line 13 is provided between the reserved area 11 and the removed area 12. The circuit board has PTH holes 14. The PTH holes 14 intersect with the outline line 13 to form a left intersection point 141 and a right intersection point 142. Half of the PTH hole 14 is in the reserved area 11 and the other half is in the removed area 12;
[0044] The router three - coordinate moving component enables the router 224 to feed in the removed area 12. When the router 224 moves from left to right along the outline line 13 and routers the right intersection point 142, the router 224 is in a right - hand rotation state. When the router 224 moves from right to left along the outline line 13 and routers the left intersection point 141, the router 224 is in a left - hand rotation state.
[0045] The router 224 feeds in the removed area 12. For the left intersection point 141 and the right intersection point 142, the router 224 adopts opposite rotation states and opposite feed trajectories respectively. The router 224 routers the left intersection point 141 and the right intersection point 142 successively. At the intersection points, the router 224 first contacts the copper layer 16 of the PTH hole 14 and then contacts the substrate layer of the PTH hole 14. With the help of the dual - color light - emitting diode 225, it is convenient for the staff to understand the current rotation state of the router 224. When it is found that the router 224 does not rotate correctly at the specified intersection position of the PTH hole 14, the staff can quickly shut down the device and then correct the rotation state of the router 224. In this way, burrs 17 are avoided when making the PTH half - hole 15, ensuring good welding performance of the PTH half - hole 15. The PTH half - hole 15 is formed in one pass by the router without switching the router for secondary routing of the board, saving production time and reducing production costs.
[0046] In this embodiment, along the contour line 13, for the right intersection point 142, the correct rotation state of the milling cutter 224 is the right-handed rotation state, and the two-color light-emitting diode 225 emits light of the first color; for the left intersection point 141, the correct rotation state of the milling cutter 224 is the left-handed rotation state, and the two-color light-emitting diode 225 emits light of the second color; only by cooperating with the corresponding feed movement direction can burrs 17 be avoided when manufacturing the PTH half hole 15. If the operating parameters of the device are incorrect during the device debugging and preparation stage; during the operation stage of the device, with the help of the two-color light-emitting diode 225, the staff discovers that at the right intersection point 142, the milling cutter 224 is in the left-handed rotation state, or at the left intersection point 141, the milling cutter 224 is in the right-handed rotation state, burrs 17 will be generated when manufacturing the PTH half hole 15; the staff can quickly shut down the device, correct the operating parameters of the device, make the milling cutter 224 rotate correctly at the specified intersection point position, effectively avoid burrs 17 when machining the PTH hole 14; and reduce production losses.
[0047] The rotation drive motor 222 is a DC motor. The two-color light-emitting diode 225 is formed by two diodes with different emission colors connected in reverse parallel. The two-color light-emitting diode 225 is connected in series with the rotation drive motor 222. When the two power supply poles of the DC motor are correctly connected to the positive and negative poles of the DC power supply 226, the DC motor outputs right-handed rotation. When the two power supply poles of the DC motor are reversely connected to the positive and negative poles of the DC power supply 226, the DC motor outputs left-handed rotation, and only one diode in the two-color light-emitting diode 225 conducts and emits light.
[0048] The first color light is red light, and the second color light is green light. This is convenient for the staff to distinguish the right-handed rotation state and the left-handed rotation state of the current milling cutter 224.
[0049] The milling cutter rotation drive assembly 22 further includes a DC power supply 226, an MCU 227, and a double-contact relay 24. The double-contact relay 24 includes a bottom plate 241, a vertical rod 242, an armature 243, an electromagnet coil 244, a movable plate 245, a tension spring 246, an electrode plate 247, a first contact plate 248, and a second contact plate 249;
[0050] The vertical rod 242 is fixedly connected to the bottom plate 241. The movable plate 245 is hinged to the vertical rod 242. The left end of the movable plate 245 is connected to the bottom plate 241 through the tension spring 246. The right end of the movable plate 245 is fixedly connected to the electrode plate 247. The electromagnet coil 244 is fixedly connected to the bottom plate 241. The armature 243 is fixedly connected to the middle of the movable plate 245. The armature 243 is located above the electromagnet coil 244. The first contact plate 248 is fixedly arranged above the electrode plate 247. The second contact plate 249 is fixedly arranged below the electrode plate 247;
[0051] Both ends of the electromagnet coil 244 are electrically connected to the MCU 227;
[0052] The electrode plate 247 has a left electrode 2471 and a right electrode 2472. The left electrode 2471 is connected to the first power supply line of the rotary drive motor 222, and the right electrode 2472 is connected to the second power supply line of the rotary drive motor 222;
[0053] The first contact plate 248 has a first left contact and a first right contact. The first left contact is connected to the positive pole of the DC power supply 226, and the first right contact is connected to the negative pole of the DC power supply 226;
[0054] The second contact plate 249 has a second left contact and a second right contact. The second left contact is connected to the negative pole of the DC power supply 226, and the second right contact is connected to the positive pole of the DC power supply 226.
[0055] The MCU 227 is part of the prior art control system of the device of the present invention. When the MCU 227 does not output an electrical signal, the electromagnet coil 244 is powered off, the tension spring 246 resets, the electrode plate 247 contacts the first contact plate 248, the left electrode 2471 and the right electrode 2472 are respectively connected to the first left contact and the first right contact, and the first power supply line and the second power supply line of the rotary drive motor 222 are directly connected to the positive and negative poles of the DC power supply 226; when the MCU 227 outputs an electrical signal, the electromagnet coil 244 is powered on, attracting the armature 243, the tension spring 246 is in a stretched state, the electrode plate 247 contacts the second contact plate 249, the left electrode 2471 and the right electrode 2472 are respectively connected to the second left contact and the second right contact, and the first power supply line and the second power supply line of the rotary drive motor 222 are reversely connected to the positive and negative poles of the DC power supply 226. Quickly switch the rotary drive motor 222 between outputting right rotation and left rotation.
[0056] The workpiece positioning assembly 23 includes a support base 231, positioning pins 232 and vacuum suction cups 233. The support base 231 is fixedly connected to the frame 2, and a plurality of the positioning pins 232 and vacuum suction cups 233 are fixedly arranged on the support base 231. The circuit board has positioning holes, and the positioning holes cooperate with the positioning pins 232. Conveniently position the circuit board, and the vacuum suction cup 233 is used to suck the printed circuit board 1, which is helpful for milling hole processing.
[0057] The working principle of the milling cutter three-coordinate movement assembly 21 is the prior art, which enables the milling cutter to move back and forth in the transverse, longitudinal and vertical directions.
[0058] The working mode of the printed circuit board milling cutter device of this embodiment:
[0059] (1) Place the printed circuit board 1 on the workpiece positioning component 23, and a plurality of PTH holes 14 are arranged horizontally and evenly spaced.
[0060] (2) The router rotation drive component 22 makes the router 224 in a right-handed rotation state, and the router three-coordinate movement component 21 makes the router 224 feed along the removal area 12;
[0061] When the router 224 moves from left to right along the outer contour line 13, the router 224 adopts the feed path of the first convex line 211, and sequentially completes the processing of all the PTH holes 14;
[0062] The feed path of the first convex line 211 is that the router 224 first feeds horizontally to the right. When approaching the left intersection point 141, it turns backward by 45° to feed around the left intersection point 141. After passing through the inclined length, when reaching the position longitudinally aligned with the left intersection point 141, it turns forward by 90° to feed. After passing through the inclined length again, the router 224 returns to horizontal rightward feeding, and then mills the right intersection point 142; to avoid burrs 17 at the left intersection point 141, and when the router 224 is at the right intersection point 142, it first contacts the copper layer 16 of the hole wall and then contacts the substrate layer.
[0063] (3) When the router 224 moves from right to left along the outer contour line 13, the router 224 adopts the feed path of the second convex line 212, and sequentially completes the processing of all the PTH holes 14;
[0064] The feed path of the second convex line 212 is that the router 224 first feeds horizontally to the left. When approaching the right intersection point 142, it turns backward by 45° to feed around the right intersection point 142. After passing through the inclined length, when reaching the position longitudinally aligned with the right intersection point 142, it turns forward by 90° to feed. After passing through the inclined length again, the router 224 returns to horizontal leftward feeding, and then mills the left intersection point 141. Ensure that the router 224 does not touch the copper layer 16 of the right intersection point 142, and avoid milling burrs 17 at the processed right intersection point 142 due to factors such as the shaking of the router 224, and when the router 224 is at the left intersection point 141, it first contacts the copper layer 16 of the hole wall and then contacts the substrate layer.
[0065] (4) Finally, the PTH half hole 15 is obtained in the reserved area 11. Since burrs 17 are avoided during the production of the PTH half hole 15, there is no need to replace the router 224 with a small diameter to repair the burrs 17; saving production time and reducing production costs.
[0066] Compared with the background art, the manufacturing process of the printed circuit board 1 with PTH half holes 15 in this embodiment mainly includes blanking, inner pressing, drilling, copper deposition plating, outer layer circuit, pattern electroplating, stripping, etching and tin stripping, outer layer AOI, solder mask printing, character printing, routing the outer shape, continuity testing, final inspection, and packaging. The step of routing out the PTH half holes 15 in the background art is omitted; in the step of routing the outer shape, the routing tool device of the printed circuit board of the present utility model is used to make the PTH half holes 15, and the routing tool can still be used to route the outer shape of the printed circuit board 1; here, the originally large circuit board is divided into multiple small and independent circuit board units.
[0067] Although the specific embodiments of the present utility model have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present utility model. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present utility model should all be covered by the scope protected by the claims of the present utility model.
Claims
1. A printed circuit board gong device, characterized in that: include: Frame, gong cutter three-coordinate moving assembly, gong cutter rotation drive assembly, workpiece positioning assembly and printed circuit board; The gong cutter rotary drive assembly comprises a base, a rotary drive motor, a spindle, a gong cutter and a two-color light emitting diode, wherein the base is connected to the frame via the gong cutter three-coordinate moving assembly, the body of the rotary drive motor is fixedly connected to the base, the output shaft of the rotary drive motor is connected to the gong cutter via the spindle, the two-color light emitting diode is electrically connected to the rotary drive motor, when the rotary drive motor makes the gong cutter in a right-handed state, the two-color light emitting diode emits a first color light, and when the rotary drive motor makes the gong cutter in a left-handed state, the two-color light emitting diode emits a second color light; The workpiece positioning assembly is fixedly connected to the frame, the printed circuit board is placed on the workpiece positioning assembly, the printed circuit board has a reserved area and a removal area, the reserved area is located in front of the removal area, an outline is set between the reserved area and the removal area, the circuit board has a PTH hole, the PTH hole intersects with the outline to form a left intersection and a right intersection, half of the PTH hole is in the reserved area, and the other half is in the removal area; The three-coordinate moving assembly of the gong cutter enables the gong cutter to move in the removal area. When the gong cutter moves from left to right along the outline and cuts the right intersection, the gong cutter is in a right-handed state. When the gong cutter moves from right to left along the outline and cuts the left intersection, the gong cutter is in a left-handed state.
2. A printed circuit board gong device according to claim 1, characterized in that: The rotary drive motor is a DC motor, the two-color light emitting diode is formed by two diodes with different light emitting colors connected in reverse parallel, and the two-color light emitting diode is connected in series with the rotary drive motor.
3. A printed circuit board gong device according to claim 1, characterized in that: The first color light is red light, and the second color light is green light.
4. A printed circuit board gong device according to claim 2, characterized in that: The gong cutter rotation drive assembly also includes a DC power supply, an MCU and a double-contact relay, and the double-contact relay includes a base plate, a vertical rod, an armature, an electromagnet coil, a movable plate, a tension spring, an electrode plate, a first contact plate and a second contact plate; The vertical rod is fixedly connected to the bottom plate, the movable plate is hinged to the vertical rod, the left end of the movable plate is connected to the bottom plate through the tension spring, the right end of the movable plate is fixedly connected to the electrode plate, the electromagnet coil is fixedly connected to the bottom plate, the armature is fixedly connected to the middle part of the movable plate, the armature is located above the electromagnet coil, the first contact plate is fixedly arranged above the electrode plate, and the second contact plate is fixedly arranged below the electrode plate; Two ends of the electromagnet coil are electrically connected to the MCU; The electrode plate has a left electrode and a right electrode, the left electrode is connected to the first power line of the rotation drive motor, and the right electrode is connected to the second power line of the rotation drive motor; The first contact plate has a first left contact and a first right contact, the first left contact is connected to the positive electrode of the DC power supply, and the first right contact is connected to the negative electrode of the DC power supply; The second contact plate has a second left contact and a second right contact, the second left contact is connected to the negative electrode of the DC power supply, and the second right contact is connected to the positive electrode of the DC power supply.
5. A printed circuit board gong device according to claim 1, characterized in that: The workpiece positioning assembly includes a support seat, positioning pins and a vacuum suction cup. The support seat is fixedly connected to the frame. A plurality of positioning pins and vacuum suction cups are fixedly arranged on the support seat. The circuit board has a positioning hole, and the positioning hole cooperates with the positioning pin.