Circuit board cutting apparatus

Abstract

The application relates to the field of circuit board cutting, in particular to a circuit board cutting device which comprises a rack, a cutting device is arranged on the rack, the cutting device comprises a cutting shell, a cutting knife and a lifting mechanism, the cutting shell and the lifting mechanism are both mounted on the rack, the cutting knife is mounted on the cutting shell, the cutting shell is connected with the lifting mechanism, the cutting knife is used for cutting circuit board raw materials conveyed to the rack, a conveying device is further arranged on the rack, the conveying device is used for conveying to the cutting knife, a switching device is further mounted on the cutting shell and connected with the cutting knife, and the switching device is used for replacing the cutting knife. The application improves the problem of low cutting efficiency of the circuit board in the traditional mode and can improve the cutting efficiency of the circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit board cutting, in particular to a circuit board cutting device. BACKGROUND

[0002] The circuit board is an indispensable component in electronic equipment, and is a carrier for electrical connection of electronic components. The production and processing of the circuit board usually needs to go through processes such as cutting, drilling, copper sinking, pattern transfer, electroplating, and etching. In the cutting step, a large plate material is usually cut into small pieces with sizes meeting the design requirements.

[0003] For cutting of the plate material of the circuit board, the plate material is usually transported to a cutting machine for cutting. Generally, the cutting machine includes a rack, a cutting knife, and a driving member. The plate material is transported to the rack, and then the cutting knife is driven by the driving member to cut the plate material. However, the cutting knife will be worn after being used for a period of time, resulting in that the cutting knife is not sharp enough, and the cutting effect of the plate material is poor. At this time, the cutting knife needs to be replaced.

[0004] However, in the traditional way, the worn cutting knife is usually manually disassembled from the cutting machine, and then a new cutting knife is replaced on the cutting machine. This makes the replacement of the cutting knife take a long time, thereby affecting the cutting efficiency of the circuit board. SUMMARY

[0005] In order to improve the cutting efficiency of the circuit board, the present application provides a circuit board cutting device.

[0006] The present application provides a circuit board cutting device, which adopts the following technical scheme:

[0007] A circuit board cutting device includes a rack, a cutting device provided on the rack, the cutting device including a cutting shell, a cutting knife, and a lifting mechanism, the cutting shell and the lifting mechanism being mounted on the rack, the cutting knife being mounted on the cutting shell, the cutting shell being connected with the lifting mechanism, the cutting knife being used to cut a circuit board raw material transported to the rack, a conveying device being further provided on the rack, the conveying device being used to convey to the cutting knife, a switching device being further mounted on the cutting shell, the switching device being connected with the cutting knife, the switching device being used to replace the cutting knife.

[0008] By adopting the above technical scheme, the plate material of the circuit board is conveyed to the cutting knife by the conveying device, and then the cutting shell is lifted by the lifting mechanism, thereby driving the cutting knife to lift, so as to realize cutting of the plate material. When the cutting knife is worn, the cutting knife is replaced by the switching device, so as to realize replacement of the cutting knife in a mechanical way, thereby shortening the replacement time of the cutting knife, and facilitating improvement of the cutting efficiency of the circuit board.

[0009] In one specific embodiment, the cutting device further comprises a cutting block, the cutting shell is open at the lower end, the cutting block is installed in the cutting shell through a rotating shaft, one end of the rotating shaft extends out of the side wall of the cutting shell, a hand wheel is installed at the end of the rotating shaft outside the cutting shell, the cutting block and the cutting shell are connected with the switching device, the lower end of the cutting block is provided with a mounting groove, the cutting knife is installed in the mounting groove of the cutting block, and the lower end of the cutting knife extends out of the mounting groove and extends out of the lower end of the cutting shell.

[0010] By adopting the above technical scheme, when the lifting rod performs the lifting action, the upper end of the lifting rod drives the cutting shell to move in the vertical direction, so that the cutting shell drives the cutting block installed in the cutting shell to perform the lifting movement, so that the cutting block drives the cutting knife to perform the lifting movement, so that the cutting knife cuts the plate through the opening of the cutting shell. When replacing the cutting knife, the hand wheel is driven to rotate, thereby driving the switching block to rotate, so that the switching block drives the cutting knife to rotate, thereby facilitating the replacement of the cutting knife.

[0011] In one specific embodiment, the switching device comprises a material returning mechanism, a locking mechanism and a material replacing mechanism, the locking mechanism comprises a locking rod, an unlocking rod and a locking spring, a locking groove is formed in the inner wall of the mounting groove of the cutting block, the locking rod is installed in the locking groove, one end of the locking rod extends out of the locking groove and penetrates through the side wall of the cutting knife in the cutting block, the locking spring is installed in the locking groove, one end of the locking spring abuts against the end of the locking rod in the locking groove, and the other end of the locking spring abuts against the side wall of the locking groove, an unlocking groove is formed in the side wall of the end of the cutting block, the unlocking groove is arranged along the length direction of the cutting block, and the unlocking groove is communicated with the locking groove, the unlocking rod is slidingly installed in the unlocking groove, one end of the unlocking rod extends out of the unlocking groove, an unlocking wedge is installed on the side wall of the unlocking rod, an unlocking hole for inserting the unlocking wedge is formed in the side wall of the end of the locking rod in the locking groove, and the unlocking spring is further installed in the unlocking groove, one end of the unlocking spring is connected with the inner wall of the unlocking groove, and the other end of the unlocking spring is connected with the end of the unlocking rod in the unlocking groove, the material returning mechanism is installed on the cutting shell, the unlocking rod and the cutting knife are connected with the material returning mechanism, the material replacing mechanism is installed on the cutting shell, and the material replacing mechanism is used for conveying a new cutting knife to the cutting block.

[0012] By adopting the above technical scheme, when the cutting knife needs to be replaced, the cutting block is driven to rotate, thereby driving the cutting knife to rotate, the material returning mechanism drives the unlocking rod on the cutting block to move, the unlocking rod drives the unlocking wedge to be inserted into the unlocking hole of the locking rod, the inclined surface of the unlocking wedge is in abutment with the end of the unlocking hole close to the locking spring, thereby pushing the locking rod to move, the locking rod compresses the locking spring, and the locking rod is separated from the cutting knife, thereby unlocking the cutting knife, and facilitating the discharging of the cutting knife.

[0013] In a specific embodiment, the material returning mechanism includes a material returning rod, a material returning plate and a material returning guide rail, the material returning rod is installed in the installation slot, the axis of the material returning rod is parallel to the axis of the unlocking rod, the end of the material returning rod extends out of the installation slot, a jack is installed on the side wall of the material returning rod, the jack is in abutment with the end of the cutting knife located in the installation slot, a guide rod is also installed on the side wall of the material returning rod, the guide rod is in sliding connection with the inner wall of the installation slot, a material returning spring is also installed on the guide rod, one end of the material returning spring is connected with the side wall of the material returning rod, and the other end is connected with the inner top wall of the installation slot, the material returning plate is installed in the cutting shell and located at the end of the cutting block, a sliding groove for the unlocking rod to slide is formed in the side wall of the material returning plate, a guide inclined surface for guiding the unlocking rod from the sliding groove to the side wall of the material returning plate is arranged at the end of the sliding groove, a material returning block is installed on the side wall of the material returning plate, the material returning block is used to abut against the material returning rod, a material returning opening is formed in the circumferential wall of the cutting shell close to the lower end of the cutting shell, and the material returning guide rail is installed on the side wall of the cutting shell at the material returning opening and used to guide the cutting knife.

[0014] By adopting the above technical scheme, when the cutting block drives the unlocking rod to rotate to the material returning guide rail, the end of the unlocking rod slides along the guide inclined surface of the sliding groove to abut against the side wall of the material returning plate, thereby compressing the unlocking spring, the unlocking rod drives the unlocking block to be inserted into the unlocking hole, thereby unlocking the cutting knife. Then, with the continuous rotation of the cutting block, the material returning rod slides along the side wall of the material returning protrusion to the protruding part of the material returning protrusion, thereby driving the jack to push the cutting knife out of the installation slot, so that the cutting knife is pushed out of the installation slot and falls into the material returning guide rail, thereby achieving the action of returning the material.

[0015] In a specific embodiment, the sliding groove is in a circular ring shape, the upper end of the sliding groove is located in the vertical direction, the lower end of the sliding groove is located at the material returning opening, and the included angle between the lower end of the sliding groove and the vertical direction ranges from thirty degrees to sixty degrees.

[0016] By adopting the technical scheme, the end of the unlocking lever is slid from the sliding groove to the side wall of the material returning plate, so that the unlocking lever drives the locking lever to move through the unlocking wedge, thereby realizing the locking of the cutting knife. When the end of the unlocking lever is moved from the side wall of the material returning plate to the sliding groove, the unlocking lever drives the locking lever to move, so that the locking lever positions the cutting knife, thereby facilitating the cutting action.

[0017] In a specific implementable embodiment, the side wall of the material returning block is provided with a material returning protrusion configured to abut against the material returning lever, the material returning protrusion is located close to the material returning port, and the material returning protrusion has an included angle with the vertical direction ranging from 60 degrees to 100 degrees.

[0018] By adopting the technical scheme, the material returning lever is slid along the side wall of the material returning block to abut against the material returning protrusion, so that the material returning lever drives the cutting knife to be ejected from the mounting groove through the ejecting rod, thereby facilitating the material returning of the cutting knife.

[0019] In a specific implementable embodiment, the material replacing mechanism includes a material replacing box, a pushing assembly and a material falling assembly. The cutting shell is provided with a material falling port located above the material returning port. The material replacing box is installed on the cutting shell close to the material falling port. The material replacing box is provided with a material falling opening communicating with the material falling port. The pushing assembly is installed in the material replacing box and is configured to store new cutting knives and push the new cutting knives to the material falling opening. The material falling assembly is installed on the cutting shell and is configured to close the material falling opening and is connected with the cutting block.

[0020] By adopting the technical scheme, when the cutting block is rotated to align the mounting groove with the material falling port, the cutting block drives the material falling assembly to act, thereby opening the material falling opening, so that the cutting knife in the material replacing box is inserted into the mounting groove through the material falling opening and the material falling port, thereby realizing the replacement of the cutting knife. After one of the cutting knives falls into the cutting block from the material replacing box, the pushing assembly pushes the remaining cutting knives to the material falling opening, thereby facilitating the continuous replacement of the cutting knives.

[0021] In one specific implementation, the blanking assembly includes a blanking plate, a blanking spring and a blanking rod, the blanking plate is slidingly mounted on the side wall of the cutting shell at the blanking port, and the blanking plate is used to close the blanking port, a material hole is formed in the blanking plate for connecting the blanking port and the blanking port, the material hole is used for the cutting knife to pass through, one end of the blanking rod is mounted on the bottom wall of the blanking plate, and the other end extends downward into the cutting shell, the blanking spring is mounted in the cutting shell, one end of the blanking spring is connected with the inner wall of the cutting shell, and the other end is connected with the side wall of the blanking rod, a push block is mounted on the side wall of the cutting block, the push block is used to abut against the blanking rod, and a return spring is also mounted on the side wall of the cutting block, one end of the return spring is connected with the cutting block, and the other end is connected with the push block.

[0022] By adopting the above technical scheme, when the cutting block rotates to the position close to the blanking port, the push block on the cutting block abuts against the blanking rod, and as the cutting block rotates to the position that the mounting groove is aligned with the blanking port, the push block pushes the blanking rod to move, so that the blanking rod drives the blanking plate to move, so that the material hole on the blanking plate moves to be aligned with the blanking port, so that the blanking port and the blanking port are connected, so that the cutting knife falls into the mounting groove from the material changing box, and the replacement of the cutting knife is completed.

[0023] In one specific implementation, the lifting mechanism includes a lifting motor, a driving rod and a lifting rod, the lifting motor is mounted on the rack, the driving rod is rotationally mounted on the rack, and the driving rod is coaxially connected with the output shaft of the lifting motor, the driving rod is provided with a bent portion, the lifting rod is slidingly mounted on the rack in the vertical direction, one end of the lifting rod is connected with the bent portion of the driving rod, and the other end is connected with the cutting shell.

[0024] By adopting the above technical scheme, the driving rod is driven to rotate by the lifting motor, so that the bent portion on the driving rod drives the lifting rod to move in the vertical direction, so that the lifting rod drives the cutting knife to move in the vertical direction, thereby facilitating the cutting of the plate material.

[0025] In one specific implementation, the rack is also provided with a pressing mechanism, the pressing mechanism includes a pressing cylinder, a pressing block, a pressing rod, a pressing spring and a pressing wheel, the pressing cylinder is mounted on the rack, and the piston rod of the pressing cylinder extends downward, the pressing rod is mounted on the piston rod of the pressing cylinder, one end of the pressing rod extends downward, the pressing block is slidingly mounted on the pressing rod, the pressing spring is mounted on the pressing rod, one end of the pressing spring is connected with the side wall of the pressing rod, and the other end is connected with the pressing block, and the pressing wheel is mounted on the lower end of the pressing block, and the pressing wheel is used to press the plate material of the circuit board.

[0026] By adopting the above technical solution, when the circuit board material is transported to the cutting blade, the clamping cylinder drives the clamping rod to descend, thereby driving the clamping block to descend, so that the clamping roller on the clamping block presses the circuit board material, thereby keeping the circuit board material stable, so that the cutting blade can cut the material.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. This application provides a switching device that allows for the mechanical replacement of worn cutting blades, thereby saving cutting blade replacement time and improving the efficiency of circuit board cutting.

[0029] 2. This application provides a material ejection mechanism, which facilitates the ejection of the cutting blade from the mounting slot of the cutting block, thereby enabling the material ejection action.

[0030] 3. This application provides a material changing mechanism, which facilitates the storage of a certain amount of new cutting blades and the delivery of the new cutting blades to the mounting slot of the cutting block, thereby enabling the material changing action. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the circuit board cutting equipment of this application.

[0032] Figure 2 This is a schematic diagram of the lifting mechanism in the embodiments of this application.

[0033] Figure 3 This is a schematic diagram of the cutting block structure in an embodiment of this application.

[0034] Figure 4 This is a schematic diagram of the installation of the locking rod in an embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the installation of the unlocking lever in an embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the material ejection mechanism in the embodiments of this application.

[0037] Figure 7 This is a schematic diagram of the ejector plate in an embodiment of this application.

[0038] Figure 8 This is a schematic diagram of the installation of the ejector guide rail in the embodiments of this application.

[0039] Figure 9 This is a schematic diagram of the push component in an embodiment of this application.

[0040] Figure 10is the exploded view of the refueling mechanism in the embodiment of the application.

[0041] Figure 11 is the installation schematic view of the refueling mechanism in the embodiment of the application.

[0042] Figure 12 is the schematic view of the refueling mechanism in the embodiment of the application when refueling.

[0043] Figure 13 is the schematic view of the refueling mechanism in the embodiment of the application when refueling.

[0044] Figure 14 is the structural schematic view of the pressing mechanism in the embodiment of the application.

[0045] Legend of reference signs:

[0046] 1, rack; 2, cutting device; 21, cutting shell; 211, material returning port; 212, material falling port; 22, cutting block; 221, installation groove; 222, rotating shaft; 223, hand wheel; 23, cutting knife; 231, positioning hole; 24, lifting mechanism; 241, lifting motor; 242, driving rod; 243, bending part; 244, lifting rod; 3, conveying device; 31, conveying motor; 32, conveying roller; 33, conveying belt; 4, switching device; 41, locking mechanism; 411, locking rod; 412, unlocking hole; 413, locking spring; 414, unlocking rod; 415, unlocking wedge; 416, unlocking spring; 42, material returning mechanism; 421, material returning rod; 422, ejector rod; 423, guide rod; 424, material returning spring; 425, material returning plate; 4251, sliding groove; 426, material returning block; 427, material returning protrusion; 428, material returning guide rail; 43, refueling mechanism; 431, refueling box; 4311, material falling port; 432, material falling frame; 433, pushing plate; 434, pushing spring; 435, material falling plate; 4351, material hole; 4352, material falling protrusion; 436, material falling rod; 437, material falling spring; 438, pushing block; 439, reset spring; 5, pressing mechanism; 51, pressing cylinder; 52, pressing block; 53, pressing rod; 54, pressing spring; 55, pressing plate; 56, pressing wheel. DETAILED DESCRIPTION

[0047] The application will be further described in detail below with reference to the drawings.

[0048] The embodiment of the application discloses a circuit board cutting equipment, referring to Figure 1 and Figure 2 , comprising a rack 1, a cutting device 2 and a conveying device 3 are installed on the rack 1, the conveying device 3 is used for conveying the board material of the circuit board, and the cutting device 2 is used for cutting the board material of the circuit board conveyed in the conveying device 3.

[0049] Referring toFigure 1 And Figure 2 The conveying device 3 comprises a conveying motor 31, conveying rollers 32 and a conveying belt 33. The conveying motor 31 is fixedly installed on the side wall of one end of the frame 1. The conveying rollers 32 are arranged along the length direction of the frame 1, and one of the conveying rollers 32 is coaxially connected with the output shaft of the conveying motor 31. The conveying belt 33 is wound on the frame 1, and connects the conveying rollers 32.

[0050] Referring to Figure 2 And Figure 3 The cutting device 2 comprises a cutting shell 21, a cutting block 22, a cutting knife 23 and a lifting mechanism 24. The cutting shell 21 is slidingly installed on the frame 1 in the vertical direction, and is located above the conveying rollers 32. An opening is arranged at one end of the cutting shell 21 facing the conveying rollers 32, and the length direction axis of the cutting shell 21 is perpendicular to the conveying direction of the conveying belt 33. The cutting block 22 is rotatably installed in the cutting shell 21 through a rotating shaft 222, and the length direction axis of the cutting block 22 is parallel to the length direction axis of the cutting shell 21. An installation groove 221 is arranged at the lower end of the cutting block 22, and the cutting knife 23 is installed in the installation groove 221. One end of the rotating shaft 222 is rotatably connected with the side wall of the cutting shell 21, and the other end of the rotating shaft 222 extends out of the side wall of the cutting shell 21. A hand wheel 223 is coaxially installed at the end of the rotating shaft 222 outside the cutting shell 21. A locking member (not shown in the figure) is fixedly installed on the side wall of the cutting shell 21 near the hand wheel 223. The locking member comprises a left locking ring and a right locking ring. The left locking ring is fixedly installed on the side wall of the cutting shell 21 at one side of the rotating shaft 222. The right locking ring is slidingly installed on the side wall of the cutting shell 21 at the other side of the rotating shaft 222. One end of the right locking ring is hingedly connected with one end of the left locking ring. The other end of the right locking ring is connected with the other end of the left locking ring through a locking bolt. The rotating shaft 222 is located between the left locking ring and the right locking ring. By tightening the locking bolt, the end of the right locking ring away from the hinged axis is moved towards the left locking ring, so as to reduce the distance between the left locking ring and the right locking ring, and clamp the rotating shaft 222 by the left locking ring and the right locking ring, thereby keeping the rotating shaft 222 stationary.

[0051] Referring to Figure 2The lifting mechanism 24 comprises a lifting motor 241, a driving rod 242 and a lifting rod 244. The lifting motor 241 is fixedly installed on the side wall of the frame 1 and is located below the conveying belt 33. The driving rod 242 is rotatably installed on the frame 1 and is located below the conveying belt 33. The axis of the driving rod 242 is perpendicular to the axis of the conveying belt 33. The driving rod 242 is provided with a bent portion 243. One end of the driving rod 242 is coaxially connected with the output shaft of the lifting motor 241. One end of the lifting rod 244 is rotatably connected with the bent portion 243 of the driving rod 242. The other end of the lifting rod 244 is rotatably connected with the side wall of the cutting shell 21 near one end of the conveying belt 33.

[0052] With reference to Figure 1 and Figure 4 The cutting shell 21 is further provided with a switching device 4. The switching device 4 comprises a locking mechanism 41. The locking mechanism 41 comprises a locking rod 411, an unlocking rod 414 and a locking spring 413. A locking groove is formed in the inner wall of the installation groove 221. The locking rod 411 is slidably installed in the locking groove. The axis of the locking rod 411 is perpendicular to the axis of the cutting block 22 in the length direction. One end of the locking rod 411 extends out of the locking groove. The locking spring 413 is further installed in the locking groove. One end of the locking spring 413 abuts against the inner wall of the locking groove. The other end of the locking spring 413 abuts against one end of the locking rod 411 in the locking groove.

[0053] With reference to Figure 3 and Figure 4 A positioning hole 231 is formed in the side wall of the cutting knife 23 for inserting the locking rod 411. One end of the locking rod 411, which is away from the locking spring 413, penetrates through the positioning hole 231 and abuts against the side wall of the other side of the installation groove 221.

[0054] With reference to 4 and Figure 5 An unlocking groove is formed in the side wall of the end of the cutting block 22. The unlocking groove is arranged along the length direction of the cutting block 22. The unlocking rod 414 is slidably installed in the unlocking groove. The axis of the unlocking rod 414 is perpendicular to the axis of the locking rod 411. One end of the unlocking rod 414 extends out of the unlocking groove. The unlocking spring 416 is further installed in the unlocking groove. One end of the unlocking spring 416 abuts against the inner wall of the unlocking groove. The other end of the unlocking spring 416 abuts against one end of the unlocking rod 414 in the unlocking groove. The unlocking wedge 415 is fixedly installed on the side wall of one end of the unlocking rod 414 in the unlocking groove. A connecting groove is formed in the cutting block 22 for sliding the unlocking wedge 415. The connecting groove communicates the unlocking groove with the locking groove. The unlocking hole 412 is further formed in the side wall of one end of the locking rod 411 in the locking groove for inserting the unlocking wedge 415. The inclined surface of the unlocking wedge 415 is used for abutting against one end of the unlocking hole 412, which is close to the locking spring 413.

[0055] With reference to Figure 4 and Figure 5When the unlocking lever 414 is pushed into the unlocking slot and the unlocking spring 416 is compressed, the unlocking lever 414 drives the unlocking wedge 415 to move into the unlocking hole 412 of the locking lever 411, so that the inclined surface of the unlocking wedge 415 is in contact with the side wall of the unlocking hole 412 close to one end of the locking spring 413. With the continuous movement of the unlocking wedge 415, the side wall of the unlocking hole 412 of the locking lever 411 slides along the inclined surface of the unlocking wedge 415, so that the locking lever 411 compresses the locking spring 413, and the unlocking wedge 415 is gradually inserted into the unlocking hole 412, thereby separating the locking lever 411 from the positioning hole 231 of the cutting knife 23, and releasing the positioning of the cutting knife 23.

[0056] With reference to Figure 3 and Figure 6 The switching device 4 further comprises a material returning mechanism 42, which comprises a material returning lever 421, a material returning plate 425 and a material returning guide rail 428. The material returning lever 421 is slidingly installed in the installation slot 221 along the length direction of the cutting block 22, and one end of the material returning lever 421 extends out of the installation slot 221. A plurality of jacks 422 are fixedly installed on the side wall of the installation slot 221 where the material returning lever 421 is located, and the axis of the jacks 422 is perpendicular to the axis of the material returning lever 421. The end of the jack 422 away from the material returning lever 421 is in contact with the end of the cutting knife 23 located in the installation slot 221. A guide rod 423 is also installed on the side wall of the installation slot 221 where the material returning lever 421 is located, and the axis of the guide rod 423 is also perpendicular to the axis of the material returning lever 421. One end of the guide rod 423 extends away from the cutting knife 23, and the guide rod 423 is slidingly connected with the inner wall of the installation slot 221. A material returning spring 424 is further installed on the guide rod 423, one end of the material returning spring 424 is fixedly connected with the side wall of the material returning lever 421, and the other end is fixedly connected with the inner wall of the installation slot 221.

[0057] With reference to Figure 6 and Figure 7The two return material plates 425 are fixedly installed on the inner side wall of the cutting shell 21, and are located at two ends of the cutting block 22 respectively, and are rotationally connected with the rotating shaft 222 of the cutting block 22. A slide groove 4251 for sliding of the unlocking rod 414 is formed on the side wall of the return material plate 425 located at one end of the cutting block 22 and close to the unlocking rod 414. An inclined surface for guiding the unlocking rod 414 from the slide groove 4251 to the side wall of the return material plate 425 is arranged at the end of the slide groove 4251. The slide groove 4251 is arranged in a circular arc shape and clockwise, and the circular arc formed by the slide groove 4251 is an acute arc. The upper end of the slide groove 4251 is located in the vertical direction of the return material plate 425, and the included angle between the lower end of the slide groove 4251 and the vertical direction is 30-60 degrees, and is 45 degrees in the embodiment. A return material block 426 is fixedly installed on the side wall of the return material plate 425 close to the unlocking rod 414. The return material block 426 is circular, and a return material protrusion 427 is arranged on the side wall of the circular return material block 426. The return material protrusion 427 is located above the lower end of the slide groove 4251, and the included angle between the vertex of the return material protrusion 427 and the vertical direction is 60-100 degrees, and is 90 degrees in the embodiment. The side wall of the return material block 426 abuts against the side wall of the return rod 421 located at one end of the installation groove 221.

[0058] With reference to Figure 8 A return material port 211 is formed on the side wall of the cutting shell 21 at the lower end of the slide groove 4251. A return material guide rail 428 is fixedly installed on the return material port 211 of the outer side wall of the cutting shell 21, and one end of the return material guide rail 428 extends downwardly and obliquely away from the cutting direction. The return material guide rail 428 is used for guiding the cutting knife 23 out of the installation groove 221 of the cutting block 22.

[0059] With reference to Figure 9 and Figure 10The switching device 4 further comprises a material replacing mechanism 43, which comprises a material replacing box 431, a pushing assembly and a material dropping assembly. A material dropping opening 212 is formed in the peripheral side wall of the cutting shell 21 and is located above the material returning opening 211. The material dropping opening 212 forms an angle of 20 degrees with the vertical direction. The material replacing box 431 is fixedly installed on the outer side wall of the cutting shell 21 close to the material dropping opening 212. A material dropping opening 4311 is formed in the bottom wall of the material replacing box 431 and is in communication with the material dropping opening 212. The width of the material dropping opening 212 is greater than that of the material dropping opening 4311. The material replacing box 431 is used for storing new cutting knives 23.

[0060] With reference to Figure 10 and Figure 11 The material dropping assembly comprises a material dropping plate 435, a material dropping spring 437 and a material dropping rod 436. The material dropping plate 435 is slidingly installed on the side wall of the cutting shell 21 at the material dropping opening 212 and is used for closing the material dropping opening 4311 of the material replacing box 431. The two ends of the side wall of the material dropping plate 435 close to the material replacing box 431 are each provided with a material dropping protrusion 4352. A material hole 4351 is formed in the side wall of the material dropping plate 435 and is used for connecting the material dropping opening 4311 and the material dropping opening 212. The material hole 4351 is used for allowing the cutting knife 23 to pass through.

[0061] With reference to Figure 11 and Figure 12 One end of the material dropping rod 436 is fixedly installed on the bottom wall of one end of the material dropping plate 435. The other end of the material dropping rod 436 extends downward into the cutting shell 21. The material dropping spring 437 is installed in the cutting shell 21. One end of the material dropping spring 437 is fixedly connected with the side wall of the material dropping rod 436. The other end of the material dropping spring 437 is fixedly connected with the inner wall of the cutting shell 21.

[0062] With reference to Figure 3 and Figure 12A push groove is provided on the side wall of the end of the cutting block 22. A push block 438 is slidably installed in the push groove. The axis of the push block 438 is parallel to the axis of the length direction of the cutting block 22. The side wall of the push block 438 is also provided with an abutting slope for abutting against the side wall of the dropping rod 436. A return spring 439 is also installed in the push groove. One end of the return spring 439 abuts against the end of the push block 438 located in the push groove, and the other end abuts against the inner wall of the push groove. The elastic force of the return spring 439 is greater than the elastic force of the dropping spring 437. The push block 438 is located on the side of the mounting groove 221 near the discharge port 211. The distance between the bottom wall of the cutting block 22 on the side of the mounting groove 221 near the discharge port 211 and the top wall of the cutting block 22 is greater than the distance between the bottom wall of the cutting block 22 on the other side of the mounting groove 221 and the top wall of the cutting block 22.

[0063] Reference Figure 10 and Figure 12 A material drop frame 432 is slidably installed vertically in the material discharge port 4311 on the bottom wall of the material changing box 431. The material drop frame 432 is used for the cutting blade 23 to pass through, and the bottom wall of the material drop frame 432 is used to abut against the material drop protrusion 4352 of the material drop plate 435.

[0064] Reference Figure 11 and Figure 13 When the cutting blade 23 needs to be replaced, the cutting block 22 is rotated towards the ejector port 211, thereby causing the cutting blade 23 to rotate. When the cutting block 22 rotates to the point that the unlocking rod 414 slides from the slide groove 4251 along the guide slope to abut against the side wall of the ejector plate 425, the unlocking rod 414 compresses the unlocking spring 416 and causes the unlocking wedge 415 to insert into the unlocking hole 412 of the locking rod 411, thereby causing the locking rod 411 to compress the locking spring 413 and separate the locking rod 411 from the cutting blade 23, thereby releasing the positioning of the cutting blade 23.

[0065] Reference Figure 6 and Figure 13 Then, as the cutting block 22 continues to rotate toward the discharge port 212, the ejector rod 421 slides along the side wall of the ejector block 426 to the ejector protrusion 427, thereby causing the ejector rod 421 to push the cutting blade 23 away from the mounting groove 221 through the push rod 422 and stretch the ejector spring 424. At this time, the cutting block 22 is in a downward tilted state, causing the cutting blade 23 to slide down onto the ejector guide rail 428 under the action of gravity, thereby completing the unloading of the cutting blade 23.

[0066] Reference Figure 10 and Figure 12When the cutting block 22 continues to rotate to the discharging port 212, the discharging rod 421 slides along the sidewall of the discharging protrusion 427 to abut against the sidewall of the discharging block 426, so that the discharging spring 424 drives the discharging rod 421 to reset, and the push rod on the cutting block 22 abuts against the discharging rod 436 and drives the discharging rod 436 to move, so that the discharging rod 436 drives the discharging plate 435 to move and stretch the discharging spring 437, and the discharging protrusion 4352 on the discharging plate 435 abuts against the discharging frame 432 and pushes the discharging frame 432 away from the discharging port 212, so that the top wall of the discharging frame 432 drives the cutting knife 23 adjacent to the cutting knife 23 in the discharging frame 432 to move upward, and the sidewall of the discharging frame 432 abuts against the sidewall of the cutting knife 23 adjacent to the cutting knife 23 pushed by the discharging frame 432, so that the remaining cutting knives 23 in the discharging box 431 remain stationary, and the material hole 4351 on the discharging plate 435 is aligned with the discharging port 4311 and the discharging port 212, and at this time, the mounting groove 221 on the cutting block 22 is also aligned with the discharging port 212, so that the cutting knife 23 in the discharging box 431 slides from the discharging port 4311 to the mounting groove 221 of the cutting block 22, thereby realizing the replacement of the cutting knife 23.

[0067] With reference to Figure 3 and Figure 12 Subsequently, as the cutting block 22 continues to rotate to the vertical state, the end of the discharging plate 435 abuts against the sidewall of the discharging port 212, so that the discharging rod 436 abuts against the push block 438, thereby compressing the reset spring 439, so that the push block 438 is separated from the discharging rod 436, so as to facilitate the continuous rotation of the cutting block 22.

[0068] With reference to Figure 11 and Figure 12 When the discharging rod 436 is separated from the push block 438, the discharging plate 435 moves to reset under the action of the discharging spring 437, so that the protrusions on the discharging plate 435 gradually separate from the discharging frame 432, so that the discharging frame 432 resets under the action of gravity, thereby releasing the limiting of the remaining cutting knives 23 in the discharging box 431, so that the cutting knives 23 are pushed into the discharging frame 432 under the action of the pushing spring 434, so as to facilitate the next replacement.

[0069] With reference to Figure 10 and Figure 13When the cutting block 22 continues to rotate counterclockwise to the upper end of the sliding groove 4251, the unlocking rod 414 slides into the sliding groove 4251 under the action of the unlocking spring 416, and the end of the unlocking rod 414 slides along the guide slope of the sliding groove 4251, so that the unlocking rod 414 drives the unlocking wedge 415 to move away from the locking rod 411, so that the unlocking wedge 415 is separated from the locking rod 411, and the locking rod 411 is reinserted into the positioning hole 231 of the cutting knife 23 under the action of the locking spring 413, so as to position the cutting knife 23, so as to cut the board of the circuit board.

[0070] Referring to Figure 14 The frame 1 is also provided with a pressing mechanism 5 on both sides of the cutting device 2, and the pressing mechanism 5 comprises a pressing cylinder 51, a pressing block 52, a pressing rod 53, a pressing spring 54 and a pressing wheel 56. The pressing cylinder 51 is fixedly installed on the frame 1 and located above the conveying roller 32, and the piston rod of the pressing cylinder 51 extends downward. The pressing rod 53 is fixedly installed on the piston rod of the pressing cylinder 51, and the lower end of the pressing rod 53 extends downward. The pressing block 52 is slidably installed on the pressing rod 53 in the vertical direction. The pressing spring 54 is installed on the pressing rod 53, and one end of the pressing spring 54 abuts against the bottom wall of the upper end of the pressing rod 53, and the other end abuts against the top wall of the pressing block 52. The pressing plate 55 is rotatably installed on the bottom wall of the pressing block 52. The pressing wheel 56 is rotatably installed on the bottom wall of the pressing plate 55, and is used for pressing the board of the circuit board.

[0071] The working principle of the embodiment of the application is as follows: the board of the circuit board is conveyed to the frame 1, one of the conveying rollers 32 is driven to rotate by the conveying motor 31, the remaining conveying rollers 32 on the frame 1 are driven to rotate by the conveying belt 33, so as to realize the conveying of the board of the circuit board. When the board of the circuit board is conveyed to the cutting knife 23, the pressing rod 53 is driven to move downward by the pressing cylinder 51, so as to drive the pressing plate 55 to move downward, so that the pressing wheel 56 presses the board, then the driving rod 242 is driven to rotate by the lifting motor 241, so that the bending part 243 of the driving rod 242 drives the lifting rod 244 to realize the lifting action, so that the lifting rod 244 drives the cutting shell 21 to lift, so that the cutting knife 23 on the cutting shell 21 cuts the board, so that the large board of the circuit board is cut into small boards meeting the size requirements.

[0072] When the cutting knife 23 is worn after a period of use, it needs to be replaced. By loosening the locking bolts, the left and right locking rings are unlocked from the rotating shaft 222, and then the cutting block 22 is driven counterclockwise by the hand wheel 223. When the cutting block 22 drives the unlocking rod 414 to slide from the sliding groove 4251 of the material return plate 425 to the side wall of the material return plate 425, the unlocking rod 414 compresses the unlocking spring 416 and drives the unlocking wedge 415 to be inserted into the unlocking hole 412 of the locking rod 411, thereby driving the locking rod 411 to compress the locking spring 413 and separating the locking rod 411 from the positioning hole 231 of the cutting knife 23, so as to unlock the cutting knife 23. At this time, the cutting knife 23 is just located at the material return rail 428, and the material return rod 421 slides from the side wall of the material return block 426 to the side wall of the material return protrusion 427, so that the material return rod 421 drives the top rod 422 to push the cutting knife 23 away from the mounting groove 221, thereby pushing the cutting knife 23 out of the mounting groove 221, and at the same time, the cutting knife 23 slides down to the material return rail 428 under the action of gravity, thereby completing the discharging of the cutting knife 23.

[0073] When the old cutting knife 23 is completely separated, the cutting block 22 continues to rotate to the discharging port 212, so that the push block 438 on the cutting block 22 drives the discharging rod 436 to move and stretch the discharging spring 437, thereby driving the discharging plate 435 to move to the side wall of the discharging port 212, so that the material hole 4351 of the discharging plate 435 is in communication with the discharging port 212 and the discharging port 4311 of the material changing box 431, and the protrusion on the discharging plate 435 lifts the discharging frame 432, thereby lifting the cutting knife 23 adjacent to the discharging frame 432, so that the side wall of the discharging frame 432 limits the cutting knife 23 adjacent to the cutting knife 23 lifted by the discharging frame 432, thereby making the cutting knife 23 in the discharging frame 432 fall into the mounting groove 221 of the cutting block 22, and the cutting knife 23 adjacent to the discharging frame 432 remains stationary. When the cutting block 22 continues to rotate to the vertical state, the discharging plate 435 is limited by the side wall of the discharging port 212, so that the discharging rod 436 exerts pressure on the push block 438, thereby compressing the return spring 439 and separating the push block 438 from the discharging rod 436, so that the discharging rod 436 drives the discharging plate 435 to return under the action of the discharging spring 437, thereby closing the discharging port 212 and the discharging port 4311, and separating the protrusion of the discharging plate 435 from the discharging frame 432, thereby releasing the limitation of the discharging frame 432 on the cutting knife 23 adjacent to the discharging frame 432, so that the cutting knife 23 in the material changing box 431 is pushed into the discharging frame 432 under the action of the pushing spring 434, in order to replace the cutting knife 23 next time.

[0074] When the cutting block 22 rotates to the upper end of the sliding groove 4251, the unlocking lever 414 slides from the side wall of the material returning plate 425 to the sliding groove 4251 through the guide slope under the action of the unlocking spring 416, so as to drive the unlocking wedge 415 to separate from the locking lever 411, and thus the locking lever 411 is inserted into the positioning hole 231 of the cutting knife 23 under the action of the locking spring 413, so as to realize the positioning of the cutting knife 23. Then the cutting block 22 rotates to the vertical downward state again, so that the cutting knife 23 is aligned with the gap between two adjacent conveying rollers 32 on the rack 1, so as to re-cut the circuit board material. Finally, the locking bolt is tightened, so that the left and right locking rings clamp the rotating shaft 222, thereby locking the rotating shaft 222, so as to make the cutting knife 23 stable when cutting the circuit board material.

[0075] The above is the preferred embodiment of the present application, which does not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A circuit board cutting device, comprising a frame (1), characterized in that: The frame (1) is equipped with a cutting device (2), which includes a cutting shell (21), a cutting blade (23), and a lifting mechanism (24). The cutting device (2) also includes a cutting block (22). The cutting shell (21) and the lifting mechanism (24) are both mounted on the frame (1). The cutting blade (23) is mounted on the cutting shell (21) and is connected to the lifting mechanism (24). The cutting blade (23) is used to cut the circuit board raw materials conveyed to the frame (1). The frame (1) is also equipped with a conveying device (3), which is used to convey materials to the cutting blade (23). The cutting shell (21) is also equipped with a switching device (4). The switching device (4) is connected to the cutting blade (23), and the switching device (4) is used to replace the cutting blade (23). The switching device (4) includes a material ejection mechanism (42), a locking mechanism (41), and a material replacement mechanism (43). The locking mechanism (41) includes a locking rod (411), an unlocking rod (414), and a locking spring (413). A locking groove is provided on the inner wall of the mounting groove (221) of the cutting block (22). The locking rod (411) is installed in the locking groove, and one end of the locking rod (411) extends out of the locking groove and passes through the side wall of the cutting blade (23) located inside the cutting block (22). The locking spring (413) is installed in the locking groove, and one end of the locking spring (413) is connected to the locking rod (414). 11) One end of the cutting block (22) is in contact with the locking groove, and the other end is in contact with the side wall of the locking groove. An unlocking groove is provided on the side wall of the end of the cutting block (22). The unlocking groove is arranged along the length direction of the cutting block (22) and is connected to the locking groove. The unlocking rod (414) is slidably installed in the unlocking groove, and one end of the unlocking rod (414) extends out of the unlocking groove. An unlocking wedge (415) is installed on the side wall of the unlocking rod (414). An unlocking hole (412) for the unlocking wedge (415) to be inserted is provided on the side wall of the end of the locking rod (411) located in the locking groove. An unlocking spring (416) is also installed in the unlocking groove. One end of the unlocking spring (416) is connected to the inner wall of the unlocking groove, and the other end is connected to the locking groove. The unlocking rod (414) is connected to one end of the unlocking groove. The ejection mechanism (42) is installed on the cutting shell (21). The unlocking rod (414) and the cutting blade (23) are both connected to the ejection mechanism (42). The material changing mechanism (43) is installed on the cutting shell (21) and is used to transport a new cutting blade (23) to the cutting block (22). The ejection mechanism (42) includes an ejection rod (421), an ejection plate (425), and an ejection guide rail (428). The ejection rod (421) is installed in the mounting groove (221), and the axis of the ejection rod (421) is parallel to the axis of the unlocking rod (414). The end of the ejection rod (421) extends out of the mounting groove (221).A top rod (422) is installed on the side wall of the ejector rod (421). The top rod (422) abuts against the end of the cutting blade (23) located in the mounting groove (221). A guide rod (423) is also installed on the side wall of the ejector rod (421). The guide rod (423) is slidably connected to the inner wall of the mounting groove (221). An ejector spring (424) is also installed on the guide rod (423). One end of the ejector spring (424) is connected to the side wall of the ejector rod (421), and the other end is connected to the inner top wall of the mounting groove (221). The ejector plate (425) is installed inside the cutting shell (21) and located at the end of the cutting block (22). The side wall of the cutting shell (21) is provided with a groove (4251) for sliding the unlocking rod (414). The end of the groove (4251) is provided with a guide slope for guiding the unlocking rod (414) from the groove (4251) to the side wall of the ejector plate (425). An ejector block (426) is installed on the side wall of the ejector plate (425) to abut against the ejector rod (421). An ejector port (211) is provided on the peripheral side wall of the cutting shell (21) near the lower end of the cutting shell (21). An ejector guide rail (428) is installed on the side wall of the cutting shell (21) at the ejector port (211) and is used to guide the cutting blade (23).

2. The circuit board cutting equipment according to claim 1, characterized in that: The lower end of the cutting shell (21) is open. The cutting block (22) is installed inside the cutting shell (21) via a rotating shaft (222). One end of the rotating shaft (222) extends out of the side wall of the cutting shell (21). A handwheel (223) is installed at the end of the rotating shaft (222) outside the cutting shell (21). Both the cutting block (22) and the cutting shell (21) are connected to the switching device (4). The lower end of the cutting block (22) is provided with a mounting groove (221). The cutting blade (23) is installed in the mounting groove (221) of the cutting block (22). The lower end of the cutting blade (23) extends out of the mounting groove (221) and extends out of the lower end of the cutting shell (21).

3. The circuit board cutting equipment according to claim 1, characterized in that: The chute (4251) is annular, with its upper end located in the vertical direction and its lower end located at the discharge port (211). The angle between the lower end of the chute (4251) and the vertical direction is between 30 and 60 degrees.

4. The circuit board cutting equipment according to claim 3, characterized in that: The ejector block (426) has an ejector protrusion (427) on its side wall. The ejector protrusion (427) is used to abut against the ejector rod (421). The ejector protrusion (427) is located near the ejector port (211), and the angle between the ejector protrusion (427) and the vertical direction is between 60 degrees and 100 degrees.

5. The circuit board cutting equipment according to claim 1, characterized in that: The material changing mechanism (43) includes a material changing box (431), a pushing component, and a material dropping component. A material dropping port (212) is provided on the side wall of the cutting shell (21), and the material dropping port (212) is located above the material return port (211). The material changing box (431) is installed on the cutting shell (21) near the material dropping port (212). A material discharge port (4311) communicating with the material dropping port (212) is provided on the bottom wall of the material changing box (431). The pushing component is installed inside the material changing box (431). The material changing box (431) is used to store new cutting blades (23). The pushing component is used to push the new cutting blades (23) to the material discharge port (4311). The material dropping component is installed on the cutting shell (21). The material dropping component is used to close the material discharge port (4311), and the material dropping component is connected to the cutting block (22).

6. The circuit board cutting equipment according to claim 5, characterized in that: The material feeding assembly includes a material feeding plate (435), a material feeding spring (437), and a material feeding rod (436). The material feeding plate (435) is slidably mounted on the side wall of the cutting shell (21) at the material feeding port (212), and the material feeding plate (435) is used to close the material feeding port (4311). The material feeding plate (435) has a material hole (4351) for connecting the material feeding port (4311) and the material feeding port (212). The material hole (4351) is used for the cutting blade (23) to pass through. One end of the material feeding rod (436) is mounted on the bottom wall of the material feeding plate (435). The other end extends downward into the cutting shell (21). The material drop spring (437) is installed inside the cutting shell (21), and one end of the material drop spring (437) is connected to the inner wall of the cutting shell (21), and the other end is connected to the side wall of the material drop bar (436). A push block (438) is installed on the side wall of the cutting block (22). The push block (438) is used to abut against the material drop bar (436). A return spring (439) is also installed on the side wall of the cutting block (22). One end of the return spring (439) is connected to the cutting block (22), and the other end is connected to the push block (438).

7. The circuit board cutting equipment according to claim 1, characterized in that: The lifting mechanism (24) includes a lifting motor (241), a drive rod (242), and a lifting rod (244). The lifting motor (241) is mounted on the frame (1). The drive rod (242) is rotatably mounted on the frame (1) and is coaxially connected to the output shaft of the lifting motor (241). The drive rod (242) has a bent portion (243). The lifting rod (244) is slidably mounted on the frame (1) in the vertical direction. One end of the lifting rod (244) is connected to the bent portion (243) of the drive rod (242), and the other end is connected to the cutting shell (21).

8. The circuit board cutting equipment according to claim 1, characterized in that: The frame (1) is also equipped with a clamping mechanism (5). The clamping mechanism (5) includes a clamping cylinder (51), a clamping block (52), a clamping rod (53), a clamping spring (54), and a clamping wheel (56). The clamping cylinder (51) is mounted on the frame (1), and the piston rod of the clamping cylinder (51) extends downward. The clamping rod (53) is mounted on the piston rod of the clamping cylinder (51), and one end of the clamping rod (53) extends downward. The clamping block (52) is slidably mounted on the clamping rod (53). The clamping spring (54) is mounted on the clamping rod (53), and one end of the clamping spring (54) is connected to the side wall of the clamping rod (53), and the other end is connected to the clamping block (52). The clamping wheel (56) is mounted on the lower end of the clamping block (52), and the clamping wheel (56) is used to clamp the board material of the circuit board.

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