Main shaft structure and PCB processing equipment

Abstract

The utility model belongs to the technical field of main shafts, and particularly relates to a main shaft structure and PCB processing equipment. The main shaft structure comprises a main shaft assembly, a presser foot air cylinder, a mounting plate, a driving piece, a scrap suction cover assembly and a detection assembly. The piston rod is connected with the scrap suction cover assembly, the presser foot air cylinder comprises a cylinder body and the piston rod which are movably connected, the detection assembly comprises a trigger piece and an inductive switch, one of the trigger piece and the inductive switch is installed on the cylinder body, and the other one can be static relative to the piston rod. The main shaft assembly moves between a triggering position and a preset machining position; and the inductive switch at the triggering position induces the triggering piece. According to the embodiment, the position of the cutter of the main shaft assembly is determined through cooperation of the trigger piece and the inductive switch, electric signals can be obtained without contact between the cutter and a PCB, secondary drilling or stacking hole drilling is not affected, and repeated drilling can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spindle processing, in particular to a spindle structure and PCB processing equipment. Background Art

[0002] In the field of PCB drilling, a high-speed spindle is required to drill holes by moving up and down quickly. When drilling, there are high requirements for the height of the spindle descent (that is, the depth of the spindle tool descending to drill). In order to determine the depth of the spindle descent, traditional PCB drilling machines generally use electrical signals to control the spindle descent height.

[0003] In the existing spindle structure, after the spindle chip suction cover presser foot presses the board surface of the PCB board, the spindle tool drills down, and the moment it touches the PCB board surface, an electrical signal is triggered. The spindle drills down from this position to a preset height value, then stops drilling, lifts up, and drills the next hole.

[0004] However, when drilling the same hole repeatedly, such as drilling for deburring or drilling stacked holes for the second time, the spindle tool and the PCB board surface may not be in contact or have poor contact, which will cause the controller to not receive the signal and the drilling accuracy cannot be guaranteed, resulting in problems such as not drilling in place or drilling too deep, or even the PCB board being scrapped. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to provide a spindle structure and PCB processing equipment for the problem that the existing spindle cannot ensure the drilling accuracy when repeatedly drilling the same hole.

[0006] In order to solve the above technical problems, on the one hand, the embodiment of the utility model provides a spindle structure, including a spindle assembly, a presser foot cylinder, a mounting plate, a driving member, a chip suction cover assembly and a detection assembly, the presser foot cylinder includes a cylinder body and a piston rod that are movably connected, the spindle assembly and the cylinder body are connected to the mounting plate, the driving member is drivably connected to the mounting plate, the end of the piston rod that is away from the cylinder body is connected to the chip suction cover assembly, and the spindle assembly and the chip suction cover assembly can move relative to each other;

[0007] The detection assembly includes a trigger member and an induction switch, one of which is installed on the cylinder body, and the other can remain stationary relative to the piston rod. The driving member is used to drive the cylinder body and the spindle assembly to move along a preset direction through the mounting plate, so that the spindle assembly can reach a preset processing position according to the trigger position, and the trigger position is the position when the induction switch senses the trigger member.

[0008] Optionally, the presser foot cylinder further comprises a piston, wherein the piston is mounted on the piston rod and is movably connected to the cylinder body, the induction switch is mounted on the outside of the cylinder body, and the trigger member is mounted on the piston.

[0009] Optionally, the induction switch is a magnetic switch, and the triggering member is a magnetic ring.

[0010] Optionally, it also includes a chip suction cover assembly and a presser foot guide shaft, one end of the presser foot guide shaft is connected to the piston rod, and the other end is connected to the chip suction cover assembly, the main shaft assembly is provided with a guide hole, and the presser foot guide shaft is movably inserted into the guide hole; the piston rod can drive the chip suction cover assembly to move and press the material plate to be processed through the presser foot guide shaft.

[0011] Optionally, a bottom plate is further included, one end of the driving member is connected to the mounting plate, and the other end is connected to the bottom plate, and the driving member can drive the mounting plate to slide on the bottom plate;

[0012] The induction switch is installed on the outside of the cylinder body, and the triggering member is installed on the bottom plate.

[0013] Optionally, the detection component adapter frame, one of the trigger member and the induction switch is installed on the cylinder body of the presser foot cylinder through the adapter frame;

[0014] The adapter frame connecting piece, the mounting bracket and the locking piece, the trigger piece and one of the induction switches are installed on the connecting piece, the mounting bracket is installed on the cylinder body of the presser foot cylinder, the connecting piece can be temporarily fixed to the mounting bracket by the locking piece, and when the locking piece is released, the connecting piece can slide relative to the mounting bracket along the preset direction.

[0015] Optionally, the locking member is a bolt, an elongated hole is provided on the connecting member, a bolt connecting hole is provided on the mounting bracket, the bolt is passed through the elongated hole and threadedly connected to the bolt connecting hole to temporarily fix the connecting member on the mounting bracket.

[0016] Optionally, the connecting member includes a first main body and a sliding portion connected to the first main body, one of the trigger member and the induction switch is installed on the sliding portion, a slide groove is provided on the mounting bracket, and the sliding portion is provided in the slide groove, and when the locking member is unlocked, the sliding portion can move along the slide groove.

[0017] Optionally, a limiting portion is provided at one end of the sliding portion away from the first main body portion, and a connecting groove is formed between the limiting portion and the first main body portion;

[0018] The mounting bracket includes a second main body portion and a mounting portion connected to the second main body portion. The chute is provided on the second main body portion, and the mounting portion is mounted on the cylinder block.

[0019] When the sliding portion moves along the chute, the second main body portion can move along the connection groove.

[0020] Optionally, a receiving groove is provided on the sliding portion, and one of the trigger member and the inductive switch is received in the receiving groove.

[0021] Optionally, the inductive switch includes a connected cylinder and a boss. The receiving groove includes a first receiving groove and a second receiving groove that communicate with each other. The first receiving groove is provided at one end of the second receiving groove close to the first main body portion, and the first receiving groove penetrates through one end of the first main body portion facing away from the sliding portion.

[0022] The boss is provided in the first receiving groove, and the cylinder is provided in the second receiving groove.

[0023] Optionally, the detection assembly further includes an adjusting member. One end of the adjusting member is rotatably connected to the mounting bracket, and the other end of the adjusting member is threadedly connected to the connecting member. By rotating the adjusting member, the connecting member can be driven to slide relative to the mounting bracket.

[0024] Optionally, the preset direction is the Z direction. The spindle assembly can reach a preset machining position according to the position when the inductive switch senses the trigger member, including:

[0025] The spindle assembly can move between the trigger position and the preset machining position. The preset machining position includes a machining end position, and the machining end position is the position after the spindle assembly finishes machining the workpiece to be machined.

[0026] Wherein, the Z-axis coordinate of the machining end position is the sum of the Z-axis coordinate of the trigger position and a preset value, and reaching the preset machining position is reaching a preset depth position.

[0027] On the other hand, an embodiment of the present invention provides a PCB processing device, including the spindle structure as described above.

[0028] The spindle structure provided by the embodiment of the utility model, after the chip suction cover assembly presses against the material plate to be processed, the spindle assembly continues to move in the direction close to the material plate to be processed, until the spindle assembly is at a certain distance from the board surface of the material plate to be processed, through the cooperation of the trigger member and the induction switch, the position of the tool of the spindle assembly can be determined, starting from the trigger position of the trigger induction switch, the tool of the spindle assembly descends until the tool contacts the PCB board surface, and then the material plate to be processed begins to be processed, and the PCB processing is completed when the descending height reaches a preset value. During the movement of the spindle assembly, it is not necessary to rely on the contact between the tool and the PCB board surface to obtain an electrical signal, and it has no effect on secondary drilling or drilling stacked holes and supplementary drilling when drilling, and can achieve repeated drilling of the same hole, thereby improving the drilling accuracy and the quality of the PCB board after drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a main shaft structure provided by an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of a detection component provided by an embodiment of the utility model;

[0031] Figure 3 It is an exploded view of a detection assembly provided in one embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of a trigger member and an induction switch provided in one embodiment of the utility model.

[0033] The reference numerals in the specification are as follows:

[0034] 1. Spindle assembly;

[0035] 2. Presser foot cylinder; 21. Cylinder body; 22. Piston rod;

[0036] 3. Mounting plate;

[0037] 4. Detection assembly; 41. Trigger; 42. Induction switch; 421. Cylinder; 422. Boss; 43. Adapter; 431. Connector; 4311. First main body; 43111. Long hole; 4312. Sliding portion; 43121. Accommodating groove; 431211. First accommodating groove; 431212. Second accommodating groove; 43122. First groove; 43123. Second groove; 4313. Limiting portion;

[0038] 432, mounting bracket; 4321, second main body; 43211, slide groove; 43212, first connecting block; 43213, second connecting block; 43214, bolt connection hole; 4322, mounting part; 44, adjusting member;

[0039] 5. Bottom plate;

[0040] 6. Chip suction hood assembly;

[0041] 7. Presser foot guide shaft. Specific embodiments

[0042] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0043] As Figures 1 to 4 shown, a spindle structure provided by an embodiment of the present utility model includes a spindle assembly 1, a presser foot cylinder 2, a mounting plate 3, a driving member, a chip suction hood assembly 6 and a detection assembly 4. The presser foot cylinder 2 includes a cylinder body 21 and a piston rod 22 that are movably connected. The spindle assembly 1 and the cylinder body 21 of the presser foot cylinder 2 are connected to the mounting plate 3. The driving member is drivingly connected to the mounting plate 3. When drilling is required, the driving member can drive the mounting plate 3 to move towards the workpiece plate to be processed, so that the mounting plate 3 drives the spindle assembly 1 and the cylinder body 21 of the presser foot cylinder 2 to move towards the workpiece plate to be processed, so that the spindle assembly 1 can process the workpiece plate.

[0044] One end of the piston rod 22 away from the cylinder body 21 is connected to the chip suction hood assembly 6. The spindle assembly 1 and the chip suction hood assembly 6 can move relative to each other. The piston rod 22 can extend and drive the chip suction hood assembly 6 to abut against the workpiece plate to be processed, so that the chips generated during the processing can be sucked away in time through the chip suction hood assembly 6.

[0045] The detection assembly 4 includes a trigger member 41 and an induction switch 42. One of the trigger member 41 and the induction switch 42 is installed on the cylinder body 21 of the presser foot cylinder 2, and the other can remain stationary relative to the piston rod 22 of the presser foot cylinder 2. When the piston rod 22 is in the extended state, driven by the driving member, the mounting plate 3 drives the cylinder body 21 of the presser foot cylinder 2 and the spindle assembly 1 to move along a preset direction, so that the spindle assembly 1 can reach the preset processing position according to the trigger position. The trigger position is the position when the induction switch 42 senses the trigger member 41.

[0046] The workpiece plate to be processed is a PCB. When processing the PCB, after the piston rod 22 extends and drives the chip suction hood assembly 6 to abut against the workpiece plate to be processed, the driving member drives the main shaft assembly 1 and the cylinder block 21 of the pressing foot cylinder 2 to descend through the mounting plate 3. The piston rod 22 moves relative to the cylinder block 21 and gradually retracts into the cylinder block 21, causing the trigger member 41 and the induction switch 42 to gradually approach. When the trigger member 41 triggers the induction switch 42, it indicates that the main shaft assembly 1 has moved to the trigger position, and the trigger position is above the PCB board. At this time, the main shaft assembly 1 changes from the original high-speed descent to a low-speed uniform descent. After continuing to descend a certain height, the tool of the main shaft assembly 1 contacts the surface of the PCB board, and the main shaft assembly 1 starts to perform the processing operation on the PCB. Starting from when the induction switch 42 is triggered, when the height of the tool of the main shaft assembly 1 descending along the Z-axis reaches the preset value, the PCB processing ends, and the main shaft assembly 1 lifts up.

[0047] In a drilling machine, it is necessary to repeat drilling the same hole. For example, when deburring the hole for the second time or drilling stacked holes, the piston rod 22 extends again, and the process of the mounting plate 3 driving the main shaft assembly 1 and the cylinder block 21 of the pressing foot cylinder 2 to move is repeated. The height between the preset processing position and the trigger position is fixed, and this height is the preset value. When the trigger member 41 and the induction switch 42 are triggered and the main shaft assembly 1 moves to the trigger position, it indicates that the tool of the main shaft assembly 1 still has a certain height from the board surface, and the main shaft assembly 1 can start to prepare for processing. After the continuously descending height reaches the preset value, the main shaft assembly 1 completes the drilling operation.

[0048] In this embodiment, at a certain distance from the board surface, through the cooperation of the trigger member 41 and the induction switch 42, the position of the tool of the main shaft assembly 1 can be determined. Starting from when the induction switch 42 is triggered, during the descent of the tool of the main shaft assembly 1, the tool contacts the surface of the PCB board, and then the drilling operation is performed until the PCB processing is completed after reaching the preset processing position. During the movement of the main shaft assembly 1, it is not necessary to rely on the contact between the tool and the PCB board surface to obtain an electrical signal, which has no impact on secondary drilling or drilling stacked holes, can realize the repeated drilling of the same hole, improve the drilling accuracy, and improve the quality of the PCB board after drilling.

[0049] In one embodiment, the preset direction is the Z direction, that is Figure 1In the up and down directions, the preset machining position includes the machining end position, which is the position where the spindle assembly 1 finishes machining the workpiece to be machined. The spindle assembly 1 can move between the trigger position and the machining end position. Among them, the Z-axis coordinate of the machining end position is the sum of the Z-axis coordinate of the trigger position and a preset value, and the preset value is the preset machining depth value. The Z-axis coordinate here is an absolute value. Thus, the coordinate value of the machining end position can be confirmed according to the Z-axis coordinate of the trigger position and the preset machining depth value. After the spindle assembly 1 reaches the machining end position, the spindle assembly 1 moves to another machining position for machining, or the spindle assembly 1 performs cutting machining on the plane of the machining end position, effectively avoiding over-cutting machining and improving the product yield.

[0050] In an embodiment, one of the trigger 41 and the inductive switch 42 is installed on the cylinder block 21 of the pressure foot cylinder 2, and the other is installed on the piston or the piston rod 22 of the pressure foot cylinder 2 and can remain stationary relative to the piston rod 22. Thus, when the mounting plate 3 moves, the relative movement between the trigger 41 and the inductive switch 42 is realized to trigger.

[0051] Among them, the inductive switch 42 can be, but is not limited to, a magnetic switch and a photoelectric switch, and the trigger 41 is a magnet or an inductive sheet.

[0052] In an embodiment, as Figure 1 shown, the spindle structure further includes a bottom plate 5, which is connected to the cross beam of the drilling machine and can slide along the cross beam. The mounting plate 3 is slidably connected to the bottom plate 5, and the driving member is arranged between the mounting plate 3 and the bottom plate 5. Under the drive of the driving member, the mounting plate 3 moves on the bottom plate 5.

[0053] In an embodiment, as Figure 1 、 Figure 4 shown, the pressure foot cylinder further includes a piston, which is installed on the piston rod 22 and movably connected to the cylinder block 21. The inductive switch 42 is installed outside the cylinder block 21 of the pressure foot cylinder 2, and the trigger 41 is installed on the piston of the pressure foot cylinder 2. When the piston moves inside the cylinder block 21 along with the piston rod 22, it will drive the trigger 41 to move, so that the relative movement between the trigger 41 and the inductive switch 42 occurs. When the trigger 41 moves to the position corresponding to the inductive switch 42 inside the cylinder block 21, the inductive switch 42 is triggered. Among them, the inductive switch 42 is a magnetic switch, and the trigger 41 is a magnetic ring.

[0054] In an alternative embodiment, the inductive switch 42 is installed outside the cylinder block 21, and the trigger 41 is arranged on the bottom plate 5. The inductive switch 42 is a photoelectric switch, and the trigger 41 is an inductive sheet. The bottom plate 5 is installed on the cross beam of the drilling machine and keeps its position unchanged in the Z direction. Under the drive of the driving member, the mounting plate 3 slides up and down in the vertical direction, thus realizing the relative movement between the trigger 41 and the inductive switch 42.

[0055] In one embodiment, as Figure 1 shown, the spindle structure further includes a presser foot guide shaft 7. One end of the presser foot guide shaft 7 is connected to the end of the piston rod 22 away from the piston, and the other end of the presser foot guide shaft 7 is connected to the chip suction hood assembly 6. When the piston rod 22 extends, it can drive the chip suction hood assembly 6 to abut against the workpiece plate to be processed through the presser foot guide shaft 7, and drive the cylinder block 21 of the presser foot cylinder 2 to move in the Z direction through the mounting plate 3, so that the trigger 41 and the proximity switch 42 can move relative to each other.

[0056] Wherein, the spindle assembly 1 is provided with a guide hole, and the presser foot guide shaft 7 is movably inserted into the guide hole. When the piston rod 22 extends and drives the presser foot guide shaft 7 to move, the guide hole can guide the movement of the presser foot guide shaft 7. When the mounting plate 3 drives the spindle assembly 1 to move downward, the spindle assembly 1 can slide along the presser foot guide shaft 7.

[0057] In one embodiment, as Figure 1 shown, there are two presser foot cylinders 2 and two presser foot guide shafts 7. The piston rod 22 of each presser foot cylinder 2 is connected to the corresponding presser foot guide shaft 7. The two presser foot guide shafts 7 are respectively connected to both ends of the chip suction hood assembly 6. The two presser foot cylinders 2 act to drive the chip suction hood assembly 6 to move.

[0058] In one embodiment, as Figure 1 、 Figure 2 shown, the detection assembly 4 further includes a transfer rack 43, and one of the trigger 41 and the proximity switch 42 is mounted on the cylinder block 21 of the presser foot cylinder 2 through the transfer rack 43.

[0059] The transfer rack 43 includes a connecting member 431, a mounting bracket 432 and a locking member. One of the trigger 41 and the proximity switch 42 is mounted on the connecting member 431, the mounting bracket 432 is mounted on the presser foot cylinder 2, and the connecting member 431 can be detachably connected to the mounting bracket 432 through the locking member. The proximity switch 42 or the trigger 41 can be mounted outside the cylinder block 21 of the presser foot cylinder 2 through the connecting member 431 and the mounting bracket 432, so that the trigger 41 or the proximity switch 42 is fixed. When the locking of the locking member is released, the connecting member 431 can slide relative to the mounting bracket 432 in the Z direction. When the connecting member 431 is slid, the position of the proximity switch 42 or the trigger 41 can be adjusted, and thus the triggering position of the trigger 41 and the proximity switch 42 can be adjusted. After the position adjustment is completed, it is re-locked through the locking member.

[0060] In one example, the inductive switch 42 is mounted outside the cylinder block 21 through a connecting member 431 and a mounting bracket 432, and the triggering member 41 is mounted on the piston of the platen cylinder 2. When the sliding connecting member 431 is slid, the position of the inductive switch 42 can be adjusted, and thus the triggering position of the triggering member 41 and the inductive switch 42 can be adjusted.

[0061] In one embodiment, the locking member is a bolt. A long slot 43111 is provided on the first main body portion 4311 of the connecting member 431, and a bolt connection hole 43214 is provided on the mounting bracket 432. The locking member passes through the long slot 43111 and is threadedly connected to the bolt connection hole 43214, so as to detachably connect the connecting member 431 to the mounting bracket 432 through the locking member, so that the inductive switch 42 or the triggering member 41 can be fixed.

[0062] When the inductive switch 42 is mounted on the connecting member 431 and the position of the inductive switch 42 needs to be adjusted, the locking member is loosened, and the connecting member 431 moves up and down. The long slot 43111 is oval-shaped, providing a certain range of movement for the up and down movement of the connecting member 431. After adjusting the position of the inductive switch 42, the locking member is re-locked, thus realizing the adjustment of the position of the inductive switch 42.

[0063] In one embodiment, as Figure 2 、 Figure 3 shown, the connecting member 431 includes a first main body portion 4311 and a sliding portion 4312 connected to the first main body portion 4311. One of the triggering member 41 and the inductive switch 42 is mounted on the sliding portion 4312. A sliding groove 43211 is provided on the mounting bracket 432. The sliding groove 43211 extends along the Z direction. The sliding portion 4312 is disposed in the sliding groove 43211. When the locking of the locking member is released, the sliding portion 4312 can move along the sliding groove 43211, thereby adjusting the position of the connecting member 431.

[0064] In one embodiment, as Figure 2 、 Figure 3 shown, a limiting portion 4313 is provided at one end of the sliding portion 4312 away from the first main body portion 4311. A connecting groove is formed between the limiting portion 4313 and the first main body portion 4311. The mounting bracket 432 includes a second main body portion 4321 and a mounting portion 4322 connected to the second main body portion 4321. The sliding groove 43211 is provided on the second main body portion 4321. The mounting portion 4322 is mounted on the cylinder block 21 of the platen cylinder 2. Among them, a through hole is provided on the mounting portion 4322, so that the mounting portion 4322 is sleeved outside the cylinder block 21 of the platen cylinder 2.

[0065] Release the locking of the locking member. When the sliding portion 4312 moves along the sliding groove 43211, the second main body portion 4321 can move along the connecting groove, so as to ensure that the connecting member 431 slides relative to the mounting bracket 432 in the Z direction without deviation in direction.

[0066] In one embodiment, as Figure 2 、 Figure 3 shown, the second main body portion 4321 includes a first connecting block 43212 and a second connecting block 43213. The sliding groove 43211 is formed between the first connecting block 43212 and the second connecting block 43213, and the second main body portion 4321 is U-shaped.

[0067] The connecting groove includes a first groove 43122 and a second groove 43123 which are oppositely arranged. The opening directions of the first groove 43122 and the second groove 43123 are opposite. The first groove 43122 is formed between one end of the limiting portion 4313 and the first main body portion 4311, and the second groove 43123 is formed between the other end of the limiting portion 4313 and the first main body portion 4311. When the sliding portion 4312 is disposed in the sliding groove 43211, the first main body portion 4311 contacts the second main body portion 4321. The first connecting block 43212 is engaged in the first groove 43122, and the first connecting block 43212 can slide along the first groove 43122. The second connecting block 43213 is engaged in the second groove 43123, and the second connecting block 43213 slides along the second groove 43123, so that in a plane perpendicular to the Z direction, the connecting member 431 and the mounting bracket 432 do not move relative to each other and can only slide relative to each other in the Z direction.

[0068] In one embodiment, a receiving groove 43121 is provided on the sliding portion 4312, and one of the inductive switch 42 and the trigger 41 is received in the receiving groove 43121, so that the inductive switch 42 or the trigger 41 can move in the Z direction along with the connecting member 431, thereby realizing.

[0069] Furthermore, the inductive switch 42 is disposed in the receiving groove 43121, and the trigger 41 is mounted on the piston.

[0070] In one embodiment, as Figure 3As shown, the sensing switch 42 includes a connected cylinder 421 and a boss 422, and the accommodating groove 43121 includes a first accommodating groove 431211 and a second accommodating groove 431212 that are connected. The first accommodating groove 431211 is arranged at an end of the second accommodating groove 431212 close to the first main body 4311, the first accommodating groove 431211 penetrates the end of the first main body 4311 away from the sliding portion 4312, and the second accommodating groove 431212 extends along the z direction. The boss 422 is arranged in the first accommodating groove 431211, and the cylinder 421 is arranged in the second accommodating groove 431212. The first accommodating groove 431211 and the second accommodating groove 431212 can limit the installation position of the sensing switch 42 in the accommodating groove 43121, and in the direction from the first main body 4311 to the limiting portion 4313, the sensing switch 42 is not easy to shake in the accommodating groove 43121.

[0071] In one embodiment, if Figure 2 , Figure 3 As shown, the detection assembly 4 further includes an adjusting member 44 , and the adjusting member 44 is used to drive the connecting member 431 to slide relative to the mounting bracket 432 .

[0072] One end of the adjusting member 44 is movably connected to the mounting bracket 432, and the other end of the adjusting member 44 is threadedly connected to the connecting member 431. By rotating the adjusting member 44, under the action of the threads of the adjusting member 44 and the mounting bracket 432, the adjusting member 44 can drive the connecting member 431 to slide relative to the mounting bracket 432, thereby adjusting the position of the induction switch 42. Preferably, the adjusting member 44 is a bolt or a screw.

[0073] In one embodiment, if Figure 2 , Figure 3 As shown, one end of the adjusting member 44 is movably connected to the second main body 4321, and the other end of the adjusting member 44 extends into the slide groove 43211 and is threadedly connected to the sliding portion 4312. The adjusting member 44 and the second main body 4321 are clearance-matched, and the adjusting member 44 and the second main body 4321 will not move relative to each other in the vertical direction. When the adjusting member 44 rotates, the sliding portion 4312 can be driven to move up and down by the action of the thread, thereby adjusting the position of the induction switch 42.

[0074] On the other hand, an embodiment of the utility model provides a PCB processing device, including the spindle structure of the above embodiment. The PCB processing device is a drilling machine, a gong machine or a drilling and gong integrated machine.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle structure, characterized in that, It includes a main shaft assembly, a presser foot cylinder, a mounting plate, a driving member, a chip suction hood assembly and a detection assembly. The presser foot cylinder includes a cylinder body and a piston rod movably connected. The main shaft assembly and the cylinder body are connected to the mounting plate. The driving member is drivingly connected to the mounting plate. One end of the piston rod away from the cylinder body is connected to the chip suction hood assembly, and relative movement can occur between the main shaft assembly and the chip suction hood assembly. The detection assembly includes a triggering member and an induction switch. One of the triggering member and the induction switch is mounted on the cylinder body, and the other can remain stationary relative to the piston rod. The driving member is used to drive the cylinder body and the main shaft assembly to move along a preset direction through the mounting plate, so that the main shaft assembly can reach a preset machining position according to the triggering position, and the triggering position is the position when the induction switch senses the triggering member.

2. The spindle structure according to claim 1, wherein, The presser foot cylinder further includes a piston. The piston is mounted on the piston rod and is movably connected to the cylinder body. The induction switch is mounted outside the cylinder body, and the triggering member is mounted on the piston.

3. The spindle structure according to claim 1, characterized in that, The induction switch is a magnetic switch, and the triggering member is a magnetic ring.

4. The spindle structure according to claim 1, characterized in that It further includes a presser foot guide shaft. One end of the presser foot guide shaft is connected to the piston rod, and the other end is connected to the chip suction hood assembly. The main shaft assembly is provided with a guide hole, and the presser foot guide shaft is movably inserted into the guide hole. The piston rod can drive the chip suction hood assembly to move and press against the workpiece plate to be machined through the presser foot guide shaft.

5. The spindle structure according to claim 1, characterized in that, It further includes a bottom plate. One end of the driving member is connected to the mounting plate, and the other end is connected to the bottom plate. The driving member can drive the mounting plate to slide on the bottom plate. The induction switch is mounted outside the cylinder body, and the triggering member is mounted on the bottom plate.

6. The spindle structure according to claim 1, wherein, The detection assembly further includes an adapter bracket. One of the triggering member and the induction switch is mounted on the cylinder body through the adapter bracket. The adapter bracket includes a connecting member, a mounting bracket and a locking member. One of the triggering member and the induction switch is mounted on the connecting member. The mounting bracket is mounted on the cylinder body. The connecting member can be detachably connected to the mounting bracket through the locking member. When the locking of the locking member is released, the connecting member can slide relative to the mounting bracket along the preset direction.

7. The spindle structure according to claim 6, characterized in that, The locking member is a bolt. A long slot is provided on the connecting member, and a bolt connection hole is provided on the mounting bracket. The bolt passes through the long slot and is threadedly connected to the bolt connection hole to detachably connect the connecting member to the mounting bracket.

8. The spindle structure according to claim 6, characterized in that, The connecting member includes a first main body portion and a sliding portion connected to the first main body portion. One of the triggering member and the induction switch is mounted on the sliding portion. A sliding groove is provided on the mounting bracket, and the sliding portion is arranged in the sliding groove. When the locking of the locking member is released, the sliding portion can move along the sliding groove.

9. The spindle structure according to claim 8, wherein, A limiting portion is provided at one end of the sliding portion away from the first main body portion, and a connecting groove is formed between the limiting portion and the first main body portion. The mounting bracket includes a second main body portion and a mounting portion connected to the second main body portion. The sliding groove is provided on the second main body portion, and the mounting portion is mounted on the cylinder block. When the sliding portion moves along the sliding groove, the second main body portion can move along the connecting groove.

10. The spindle structure according to claim 8, characterized in that, A receiving groove is provided on the sliding portion, and one of the trigger member and the inductive switch is received in the receiving groove.

11. The spindle structure according to claim 10, wherein, The inductive switch includes a connected cylinder and a boss. The receiving groove includes a first receiving groove and a second receiving groove that communicate with each other. The first receiving groove is provided at one end of the second receiving groove close to the first main body portion, and the first receiving groove penetrates through one end of the first main body portion facing away from the sliding portion. The boss is provided in the first receiving groove, and the cylinder is provided in the second receiving groove.

12. The spindle structure according to claim 8, characterized in that, The detection assembly further includes an adjusting member. One end of the adjusting member is rotatably connected to the mounting bracket, and the other end of the adjusting member is threadedly connected to the connecting member. By rotating the adjusting member, the connecting member can be driven to slide relative to the mounting bracket.

13. The spindle structure according to any one of claims 1-12, characterized in that, The preset direction is the Z direction. The preset machining position includes a machining end position. The machining end position is the position where the main shaft assembly finishes machining the workpiece to be machined. The main shaft assembly can move between the trigger position and the machining end position. Wherein, the Z-axis coordinate of the machining end position is the sum of the Z-axis coordinate of the trigger position and a preset value, and the preset value is a preset machining depth value.

14. A PCB processing device, characterized in that, It includes the main shaft structure according to any one of claims 1-13.

Images