Peristaltic fine adjustment mechanism and circuit board drilling equipment

Abstract

The utility model provides a creeping fine tuning mechanism and circuit board drilling equipment, the creeping fine tuning mechanism comprises a movable insert, a tension spring, a piezoelectric ceramic device, a limiting seat, a locking plate and two groups of locking driving mechanisms, the limiting seat is provided with a limiting part, the locking plate comprises a fixed section, two flexible sections and two locking top sections, a limiting groove is formed between the two top locking sections and the limiting part, one locking driving mechanism can control one top locking section to move, the movable insert is movably located in the limiting groove and comprises two movable inserts and a flexible arm, and the two driving ends of the piezoelectric ceramic device abut against the driving side faces of the two movable inserts correspondingly. The two ends of the tension spring are connected to the two movable inserts in a hooked mode respectively, and one locking top section can abut against the side face of one movable insert in a pressing mode. The wriggling fine adjustment mechanism can achieve micron-scale accurate and stable adjustment, the adjustment accuracy is high, the precision stability is high, and the product machining precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production and manufacturing equipment, in particular to a peristaltic fine-tuning mechanism and a circuit board drilling device with the peristaltic fine-tuning mechanism. Background Technique

[0002] A circuit board is an important electronic component, a support for electronic components, and a carrier for electrical connection of electronic components. During the manufacturing process of a circuit board, holes are first drilled in the circuit board and positioning pins are inserted so that the positioning pins play a role in positioning and fixing in the subsequent manufacturing process of the circuit board. Thus, during the manufacturing process of drilling the circuit board, the circuit board is placed on the workbench of the circuit board drilling device, and the workbench is provided with clamping holes so that the positioning pins on the circuit board are clamped by the clamping holes on the workbench to limit and support the circuit board on the workbench, and then the movement control mechanism of the circuit board drilling device controls the drill bit to drill the circuit board limited and supported on the workbench.

[0003] In order to make the horizontal processing coordinate system of the drilling spindle of the circuit board drilling device coincide with the horizontal coordinate system of the clamping holes on the workbench where the positioning pins of the circuit board are clamped, it is necessary to perform peristaltic fine-tuning on the horizontal position of the clamping holes on the workbench. Existing circuit board drilling devices use piezoelectric ceramics to perform micron-level peristaltic fine-tuning on the moving plate where the clamping holes are located, but the adjusted moving plate cannot be locked. As the production and processing time increases, the driving voltage of the piezoelectric ceramics will fluctuate, and the moving plate will move due to not being locked, resulting in the horizontal position of the moving plate where the clamping holes are located shifting, thus causing the horizontal position of the clamping holes to shift relative to the standard position, affecting the processing accuracy of the product. Summary of the Utility Model

[0004] To achieve the first object of the utility model, the utility model provides a peristaltic fine-tuning mechanism with high adjustment accuracy and strong accuracy stability, which can achieve micron-level precise and stable adjustment to improve the processing accuracy of products.

[0005] To achieve the second object of the utility model, the utility model provides a circuit board drilling device with the above peristaltic fine-tuning mechanism to improve the processing accuracy of products.

[0006] To achieve the first object of the present utility model, the present utility model provides a peristaltic fine adjustment mechanism, which includes a movable insert, a tension spring, a piezoelectric ceramic device, a limit seat, a locking plate, and two sets of locking drive mechanisms. The locking plate is located on the upper end surface of the limit seat in the vertical direction. A limit portion extending in the first direction is convexly provided on the upper end surface of the limit seat. The locking plate includes a fixed section, two flexible sections, and two locking top sections. The two locking top sections are arranged side by side in the first direction, and the two locking top sections are located on one side of the limit portion in the second direction and form a limit groove with the limit portion. One flexible section is connected between one locking top section and the fixed section, and the fixed section is fixed on the limit seat. One locking drive mechanism can control the movement of one locking top section in the second direction. The movable insert is movably located in the limit groove in the first direction, and the movable insert includes two movable blocks and a flexible arm. The two movable blocks are respectively connected to both ends of the flexible arm in the first direction. The piezoelectric ceramic device is arranged on the movable insert, and the two driving ends of the piezoelectric ceramic device in the first direction respectively press against the driving side surfaces of the two movable blocks. The two ends of the tension spring in the first direction are respectively hooked on the two movable blocks. One locking top section can press against the side surface of one movable block in the second direction. The second direction and the first direction are perpendicularly arranged in the horizontal direction. A peristaltic plate is installed on the movable insert.

[0007] As can be seen from the above solution, in the peristaltic fine adjustment mechanism of the present utility model, the tension spring and the piezoelectric ceramic device cooperate to enable the two movable blocks of the movable insert to respectively control the first peristaltic plate to perform micron-level peristaltic fine adjustment in the first direction, and the two sets of locking drive mechanisms cooperate with the two locking top sections of the locking plate one by one, so that one locking top section can press against the side surface of one movable block in the second direction to lock or release the corresponding movable block, improving the micron-level peristaltic fine adjustment accuracy and having strong accuracy stability, thereby being able to achieve micron-level precise and stable adjustment, and further improving the product processing accuracy.

[0008] A further solution is that each locking drive mechanism includes a first cylinder and a first runner. The first cylinder is arranged on the fixed section, and the first piston rod of the first cylinder extends in the first direction. A convex platform is convexly provided on the driving surface of the first piston rod close to the locking top section in the second direction. The first runner is rotatably supported on one locking top section around the vertical direction, and the outer peripheral wall of the first runner can press against the driving surface or the convex platform of the first piston rod; when the outer peripheral wall of the first runner presses against the driving surface of the first piston rod, the locking top section moves away from the movable block in the second direction to release the movable block; when the outer peripheral wall of the first runner presses against the convex platform, the locking top section moves towards the movable block in the second direction to lock the movable block.

[0009] A further solution is that each locking drive mechanism further includes a second runner. The second runner is rotatably supported on the fixed section about the vertical direction, and the outer peripheral wall of the second runner abuts against the contact surface of the first piston rod. The contact surface of the first piston rod and the driving surface of the first piston rod are oppositely arranged in the second direction.

[0010] A further solution is that each locking drive mechanism includes a second cylinder, a driving rod and a third runner. The second cylinder is arranged on the fixed section, and the second piston rod of the second cylinder extends in the first direction. A driving shaft is arranged on the second piston rod. A waist-shaped slot is formed at the first end of the driving rod. The waist-shaped slot is rotatably sleeved on the driving shaft. An eccentric wheel is arranged at the second end of the driving rod. The eccentric wheel is rotatably supported on the fixed section about the vertical direction. The third runner is rotatably supported on a locking top section about the vertical direction, and the outer peripheral wall of the third runner abuts against the outer peripheral wall of the eccentric wheel to force the third runner to drive the locking top section to move in the second direction.

[0011] A further solution is that each locking drive mechanism includes a third cylinder and a first swing rod. The third cylinder is arranged on the fixed section, and the third piston rod of the third cylinder extends in the first direction. A first hinge shaft is arranged on the third piston rod. A second hinge shaft is arranged on a locking top section. The first end of the first swing rod is hinged to the first hinge shaft, and the second end of the first swing rod is hinged to the second hinge shaft to force the locking top section to move in the second direction.

[0012] A further solution is that each locking drive mechanism further includes a second swing rod. A third hinge shaft is arranged on the fixed section. The first end of the second swing rod is hinged to the first hinge shaft, and the second end of the second swing rod is hinged to the third hinge shaft. The third hinge shaft and the second hinge shaft are symmetrically arranged with respect to the third piston rod.

[0013] A further solution is that the limiting groove is a dovetail groove, and the movable insert is in a dovetail shape and is adapted to be located in the dovetail groove.

[0014] In order to achieve the second object of the present invention, the present invention provides a circuit board drilling device, which includes a workbench and a first clamping mechanism. The first clamping mechanism includes a first peristaltic plate and a peristaltic fine adjustment mechanism. The peristaltic fine adjustment mechanism is the above-mentioned peristaltic fine adjustment mechanism. The limiting seat of the peristaltic fine adjustment mechanism is arranged on the workbench. The first peristaltic plate is arranged on the movable insert of the peristaltic fine adjustment mechanism to control the movement of the first peristaltic plate in the first direction, and the first peristaltic plate is provided with a first clamping hole.

[0015] A further solution is that the circuit board drilling device further includes a second clamping mechanism. The second clamping mechanism includes a second peristaltic plate and two sets of peristaltic fine adjustment mechanisms. The limit seat of the first set of peristaltic fine adjustment mechanisms is arranged on the workbench, the limit seat of the second set of peristaltic fine adjustment mechanisms is arranged on the movable insert of the first set of peristaltic fine adjustment mechanisms, and the second peristaltic plate is arranged on the movable insert of the second set of peristaltic fine adjustment mechanisms to control the second peristaltic plate to move in the first direction and the second direction respectively. The movable inserts of the second set of peristaltic fine adjustment mechanisms and the movable inserts of the first set of peristaltic fine adjustment mechanisms are arranged perpendicular to each other. The second peristaltic plate and the first peristaltic plate are arranged side by side in the second direction, and the second peristaltic plate is provided with a second clamping hole.

[0016] A further solution is that the circuit board drilling device further includes a linkage rod and a drive control mechanism. A first insert is arranged on the second peristaltic plate. The first end of the linkage rod is hinged to the first insert or the second peristaltic plate. The drive control mechanism can control the second end of the linkage rod to move in the horizontal direction. A second insert is arranged on the linkage rod. A second clamping hole is formed between the second clamping part of the second insert and the first clamping part of the first insert. Description of the Drawings

[0017] Figure 1 is a structural diagram of the first embodiment of the circuit board drilling device of the present utility model.

[0018] Figure 2 is a structural diagram of the cooperation of the workbench, the first clamping mechanism and the second clamping mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0019] Figure 3 is a partial structural diagram of the cooperation of the workbench, the first clamping mechanism and the second clamping mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0020] Figure 4 is an exploded view of the cooperation of the workbench, the first clamping mechanism and the second clamping mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0021] Figure 5 is an exploded view of the second clamping mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0022] Figure 6 is a structural diagram of the peristaltic fine adjustment mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0023] Figure 7 is a cross-sectional view of the peristaltic fine adjustment mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0024] Figure 8 is an exploded view of the peristaltic fine adjustment mechanism in the first embodiment of the circuit board drilling device of the present utility model.

[0025] Figure 9 It is the front view of the movable insert in the first embodiment of the circuit board drilling equipment of the present utility model.

[0026] Figure 10 It is the front view of the locking plate in the first embodiment of the circuit board drilling equipment of the present utility model.

[0027] Figure 11 It is the front view of the second peristaltic plate in the first embodiment of the circuit board drilling equipment of the present utility model.

[0028] Figure 12 It is the partial structure diagram of the second peristaltic plate in the first embodiment of the circuit board drilling equipment of the present utility model.

[0029] Figure 13 It is the exploded view of the first clamping mechanism in the first embodiment of the circuit board drilling equipment of the present utility model.

[0030] Figure 14 It is the front view of the peristaltic fine-tuning mechanism in the second embodiment of the circuit board drilling equipment of the present utility model.

[0031] Figure 15 It is the exploded view of the peristaltic fine-tuning mechanism in the second embodiment of the circuit board drilling equipment of the present utility model.

[0032] Figure 16 It is the front view of the peristaltic fine-tuning mechanism in the third embodiment of the circuit board drilling equipment of the present utility model.

[0033] Figure 17 It is the exploded view of the peristaltic fine-tuning mechanism in the third embodiment of the circuit board drilling equipment of the present utility model.

[0034] The present utility model will be further described below in conjunction with the drawings and embodiments. Specific embodiments

[0035] The first embodiment of the circuit board drilling equipment:

[0036] See Figures 1 to 13, this embodiment discloses a circuit board drilling device 10, including a workbench 11 and a first clamping mechanism. The first clamping mechanism includes a first peristaltic plate 12 and a peristaltic fine-tuning mechanism 16. Among them, the peristaltic fine-tuning mechanism 16 in this embodiment includes a movable insert 161, a tension spring 165, a piezoelectric ceramic device 166, a limit seat 162, a locking plate 163, and two sets of locking driving mechanisms 167. The locking plate 163 is located on the upper end surface of the limit seat 162 in the vertical direction Z. A limit portion 1621 extending in the first direction X is convexly provided on the upper end surface of the limit seat 162. The locking plate 163 includes a fixed section 1631, two flexible sections 1632, and two locking top sections 1633. The two locking top sections 1633 are arranged side by side in the first direction X, and the two locking top sections 1633 are located on one side of the limit portion 1621 in the second direction Y and form a limit groove 164 with the limit portion 1621. One flexible section 1632 is connected between one locking top section 1633 and the fixed section 1631. The fixed section 1631 is fixed on the limit seat 162. One locking driving mechanism 167 can control one locking top section 1633 to move in the second direction Y. The movable insert 161 is movably located in the limit groove 164 in the first direction X. The movable insert 161 includes two movable inserts 1611 and a flexible arm 1612. The two movable inserts 1611 are respectively connected to both ends of the flexible arm 1612 in the first direction X. The piezoelectric ceramic device 166 is arranged on the movable insert 161, and the two driving ends of the piezoelectric ceramic device 166 in the first direction X respectively press against the driving side surfaces of the two movable inserts 1611. The two ends of the tension spring 165 in the first direction X are respectively hooked on the two movable inserts 1611. One locking top section 1633 can press against the side surface of one movable insert 1611 in the second direction Y. The second direction Y and the first direction X are perpendicular to each other in the horizontal direction. The peristaltic plates 12 and 13 are installed on the movable insert 161. Specifically, the limit seat 162 of the peristaltic fine-tuning mechanism 16 in this embodiment is arranged on the workbench 11. The first peristaltic plate 12 is arranged on the movable insert 161 of the peristaltic fine-tuning mechanism 16 to control the movement of the first peristaltic plate 12 in the first direction X. The first peristaltic plate 12 is provided with a first clamping hole 121, and the first clamping hole 121 is used to clamp the positioning pin on the circuit board 20.

[0037] In this embodiment, the limit seat 162 of the peristaltic fine-tuning mechanism 16 of the circuit board drilling device 10 is arranged on the workbench 11, and the first peristaltic plate 12 is arranged on the moving insert 161 of the peristaltic fine-tuning mechanism 16. In order to control the movement of the first peristaltic plate 12 in the first direction X, a locking drive mechanism 167 of the peristaltic fine-tuning mechanism 16 in this embodiment controls a locking top section 1633 of the locking plate 163 to move in the second direction Y. Since a flexible section 1632 of the locking plate 163 is connected between a locking top section 1633 and a fixed section 1631, the locking top section 1633 moves towards the moving insert block 1611 in the second direction Y to lock a corresponding moving insert block 1611, so that a moving insert block 1611 on the moving insert 161 is locked in the limit groove 164. At this time, another moving insert block 1611 on the moving insert 161 is in a loose and movable state. Subsequently, the piezoelectric ceramic 166 on the moving insert 161 is energized, and the piezoelectric ceramic 166 expands and deforms under the piezoelectric effect. Since the two moving insert blocks 1611 of the moving insert 161 are respectively connected to both ends of the flexible arm 1612 in the first direction X, it forces the other moving insert block 1611 in the loose and movable state to move away from a moving insert block 1611 locked in the limit groove 164 in the first direction X, thereby driving the first peristaltic plate 12 to move in the first direction X. When the first peristaltic plate 12 moves in the first direction X so that its first clamping hole 121 moves to a preset position, another locking drive mechanism 167 of the peristaltic fine-tuning mechanism 16 controls another locking top section 1633 of the locking plate 163 to move in the second direction Y, so that the locking top section 1633 moves towards the moving insert block 1611 in the second direction Y to lock the moving insert block 1611 that is correspondingly arranged and adjusted to ensure that the first clamping hole 121 of the first peristaltic plate 12 is stably held at the preset position. Moreover, a tension spring 165 is hooked between the two moving insert blocks 1611 of the moving insert 161 of the peristaltic fine-tuning mechanism 16 in this embodiment. Cooperating with the expansion and deformation of the piezoelectric ceramic 166 under the piezoelectric effect, it realizes the control of the first peristaltic plate 12 to perform micron-level peristaltic fine-tuning in the first direction X.

[0038] Therefore, in this embodiment, the peristaltic fine-tuning mechanism 16 cooperates with the tension spring 165 and the piezoelectric ceramic 166 to enable the two moving insert blocks 1611 of the moving insert 161 to respectively control the first peristaltic plate 12 to perform micron-level peristaltic fine-tuning in the first direction X, and cooperates with the two locking drive mechanisms 167 and the two locking top sections 1633 of the locking plate 163 one by one, so that a locking top section 1633 can press against the side surface of a moving insert block 1611 in the second direction Y to lock or loosen the corresponding moving insert block 1611, improving the micron-level peristaltic fine-tuning accuracy and having strong precision stability, so as to realize micron-level precise and stable adjustment, and further improve the product processing accuracy.

[0039] Combined with Figures 6 to 10, in each locking drive mechanism 167 of this embodiment, it includes a first air cylinder 1671 and a first runner 1674. The first air cylinder 1671 is arranged on the fixed section 1631, and the first piston rod 1672 of the first air cylinder 1671 extends in the first direction X. A boss 1673 is convexly arranged on the first piston rod 1672 close to the driving surface of the locking top section 1633 in the second direction Y. The first runner 1674 is rotatably supported on a locking top section 1633 around the vertical direction Z, and the outer peripheral wall of the first runner 1674 can be pressed against the driving surface or the boss 1673 of the first piston rod 1672. When the outer peripheral wall of the first runner 1674 is pressed against the driving surface of the first piston rod 1672, the locking top section 1633 moves away from the movable insert 1611 in the second direction Y to loosen the movable insert 1611, so that the movable insert 1611 can be creep-adjusted microscopically in the first direction X and is located in the limit groove 164; when the outer peripheral wall of the first runner 1674 is pressed against the boss 1673, the locking top section 1633 moves towards the movable insert 1611 in the second direction Y to lock the movable insert 1611, so that the movable insert 1611 is locked and restricted in the limit groove 164 to improve the positioning accuracy.

[0040] To improve the working reliability of the first air cylinder 1671, the first air cylinder 1671 of this embodiment further includes a first compression spring 1676. The first compression spring 1678 is sleeved on the first piston rod 1672 and is located in the housing limit cavity of the first air cylinder 1671, and both ends of the first compression spring 1678 are pressed between the rod shoulder of the first piston rod 1672 and the end face of the housing limit cavity, so that in the case of the failure of the external air source supply of the first air cylinder 1671, the first compression spring 1676 can force the boss 1673 on the first piston rod 1672 to stably and reliably force the locking top section 1633 to keep pressing the movable insert 1611, thus avoiding creep caused by the interruption of the air supply of the first air cylinder 1671.

[0041] To ensure the linearity of the movement of the first piston rod 1672 in the first direction X, each locking drive mechanism 167 of this embodiment further includes a second runner 1675. The second runner 1675 is rotatably supported on the fixed section 1631 around the vertical direction Z, and the outer peripheral wall of the second runner 1675 abuts against the contact surface of the first piston rod 1672. The contact surface of the first piston rod 1672 is arranged opposite to the driving surface of the first piston rod 1672 in the second direction Y, so as to avoid the deviation of the first piston rod 1672 when the outer peripheral wall of the first runner 1674 is pressed against the boss 1673, resulting in the failure of driving the first runner 1674 to force the locking top section 1633 to move.

[0042] To improve the movement stability and reliability of the movable insert 161 in the limit groove 164, the limit groove 164 of this embodiment is a dovetail groove, and the movable insert 161 is located in the dovetail groove in a dovetail shape for adaptation.

[0043] Specifically, the limit seat 162 of the peristaltic fine-tuning mechanism 16 in this embodiment is installed on the workbench 11 through the mounting bracket 15. The mounting bracket 15 is provided with positioning ears 151. The first peristaltic plate 12 is provided with a first positioning groove 122. The positioning ears 151 are movably located in the first positioning groove 122 in the first direction X to improve the accuracy and reliability of assembly and operation.

[0044] Combined with Figure 5 、 Figure 11 and Figure 12 In this embodiment, the circuit board drilling device 10 further includes a second clamping mechanism. The second clamping mechanism includes a second peristaltic plate 13 and two sets of peristaltic fine-tuning mechanisms 16. The limit seat 162 of the first set of peristaltic fine-tuning mechanisms 16 is arranged on the workbench 11. The limit seat 162 of the second set of peristaltic fine-tuning mechanisms 16 is arranged on the movable insert 161 of the first set of peristaltic fine-tuning mechanisms 16. The second peristaltic plate 13 is arranged on the movable insert 161 of the second set of peristaltic fine-tuning mechanisms 16 to control the movement of the second peristaltic plate 13 in the first direction X and the second direction Y respectively. Specifically, in this embodiment, the movable insert 161 of the second set of peristaltic fine-tuning mechanisms 16 is perpendicularly arranged with the movable insert 161 of the first set of peristaltic fine-tuning mechanisms 16. The second peristaltic plate 13 and the first peristaltic plate 12 are arranged side by side in the second direction Y. And the second peristaltic plate 13 is provided with a second clamping hole 131, so as to control the micron-level peristaltic fine-tuning of the second clamping hole 131 in the first direction X and the second direction Y respectively. This second clamping hole 13 is used to clamp the positioning pins on the circuit board 20. Moreover, the second peristaltic plate 13 is provided with a second positioning groove 132. The positioning ears 151 of the mounting bracket 15 are movably located in the second positioning groove 132 in the first direction X to improve the accuracy and reliability of assembly and operation.

[0045] Furthermore, the circuit board drilling device 10 in this embodiment further includes a linkage rod 134 and a drive control mechanism. A first insert 133 is arranged on the second peristaltic plate 13. The first end of the linkage rod 134 is hinged to the first insert 133 or the second peristaltic plate 13. The drive control mechanism can control the second end of the linkage rod 134 to move in the horizontal direction. A second insert 1341 is arranged on the linkage rod 134. A second clamping hole 131 is formed between the second clamping portion of the second insert 1341 and the first clamping portion of the first insert 133. Specifically, the drive control mechanism in this embodiment is a drive cylinder 135.

[0046] To improve the accuracy of the position adjustment of the second insert 1341, the circuit board drilling device 10 of this embodiment further includes a limit plate 14. The limit plate 14 is fixedly arranged on the second peristaltic plate 13, and the limit plate 14 is provided with a limiting groove 141. The limiting groove 141 extends in an arc shape in the horizontal direction, and the side of the limiting groove 141 close to the first insert 133 has an opening. The second insert 1341 is movably located in the limiting groove 141, so that a first clamping hole 121 is formed between the first clamping part of the first insert 133, the opening end of the limiting groove 141 and the second clamping part of the second insert 1341.

[0047] Second Embodiment of the Circuit Board Drilling Device:

[0048] As an explanation of the second embodiment of the circuit board drilling device of the present utility model, only the differences from the first embodiment of the circuit board drilling device will be described below.

[0049] See Figure 14 and Figure 15 In this embodiment, each locking drive mechanism 177 includes a second air cylinder 1771, a drive rod 1773, and a third runner 1774. The second air cylinder 1771 is arranged on the fixed section 1631, and the second piston rod 1772 of the second air cylinder 1771 extends in the first direction X. A drive shaft 17721 is arranged on the second piston rod 1772. A waist-shaped groove 17731 is formed at the first end of the drive rod 1773. The waist-shaped groove 17731 is rotatably sleeved on the drive shaft 17721, and an eccentric wheel 17732 is arranged at the second end of the drive rod 1773. The eccentric wheel 17732 is rotatably supported on the fixed section 1631 around the vertical direction Z. The third runner 1774 is rotatably supported on a locking top section 1633 around the vertical direction Z, and the outer peripheral wall of the third runner 1774 is pressed against the outer peripheral wall of the eccentric wheel 17732, so as to force the third runner 1774 to drive the locking top section 1633 to move in the second direction Y.

[0050] To improve the working reliability of the second air cylinder 1771, the second air cylinder 1771 of this embodiment further includes a second compression spring (not marked). The second compression spring is sleeved on the second piston rod 1772 and is located in the housing limiting cavity of the second air cylinder 1771, and both ends of the second compression spring are pressed between the rod shoulder of the second piston rod 1772 and the end face of the housing limiting cavity, so that in the case of the failure of the external air source supply of the second air cylinder 1771, the second compression spring can force the drive shaft 17721 on the second piston rod 1772 to stably and reliably force the eccentric wheel 17732 of the drive rod 1773 to press against the third runner 1774, so as to force the third runner 1774 to drive the locking top section 1633 to stably and reliably press the movable insert 1611, thereby avoiding creeping caused by the second air cylinder 1771 running out of gas.

[0051] Therefore, in this embodiment, the locking drive mechanism 177 realizes the stable and reliable driving of the lock top section 1633 to move in the second direction Y through the second cylinder 1771, the drive rod 1773, the third runner 1774, and the waist-shaped grooves 17731 and eccentric wheels 17732 respectively arranged at both ends of the drive rod 1773.

[0052] Third Embodiment of the Circuit Board Drilling Equipment:

[0053] As an explanation of the third embodiment of the circuit board drilling equipment of the present utility model, only the differences from the first embodiment of the circuit board drilling equipment will be described below.

[0054] See Figure 14 and Figure 15 In this embodiment, each locking drive mechanism 187 includes a third cylinder 1871 and a first swing rod 1873. The third cylinder 1871 is arranged on the fixed section 1631, and the third piston rod 1872 of the third cylinder 1871 extends in the first direction X. A first hinge shaft 18721 is arranged on the third piston rod 1872, and a second hinge shaft 18722 is arranged on a lock top section 1633. The first end of the first swing rod 1873 is hinged to the first hinge shaft 18721, and the second end of the first swing rod 1873 is hinged to the second hinge shaft 18722 to force the lock top section 1633 to move in the second direction Y. Therefore, in this embodiment, the locking drive mechanism 187 realizes the stable and reliable driving of the lock top section 1633 to move in the second direction Y through the linkage cooperation of the third cylinder 1871 and the first swing rod 1873.

[0055] To improve the working reliability of the third cylinder 1871, the third cylinder 1871 in this embodiment further includes a third compression spring (not labeled). The third compression spring is sleeved on the third piston rod 1872 and is located in the housing limiting cavity of the third cylinder 1871, and both ends of the third compression spring are pressed between the rod shoulder of the third piston rod 1872 and the end face of the housing limiting cavity, so that in the case of the failure of the external air source supply of the third cylinder 1871, the third compression spring can force the third piston rod 1872 to stably and reliably press against the lock top section 1633 to force the lock top section 1633 to stably and reliably press the movable insert 1611, thereby avoiding creep caused by the air cut-off of the third cylinder 1871.

[0056] To ensure the linearity of the movement of the third piston rod 1872 in the first direction X, each locking drive mechanism 187 in this embodiment further includes a second swing rod 1874. A third hinge shaft 18723 is arranged on the fixed section 1631. The first end of the second swing rod 1874 is hinged to the first hinge shaft 18721, and the second end of the second swing rod 1874 is hinged to the third hinge shaft 18723, and the third hinge shaft 18723 and the second hinge shaft 18722 are symmetrically arranged with respect to the third piston rod 1872.

[0057] The above embodiments are only preferred examples of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features, and principles of the scope of the patent application of the present utility model should be included within the scope of the patent application of the present utility model.

Claims

1. Peristaltic fine adjustment mechanism, comprising a movable insert, a tension spring and a piezoelectric ceramic device, characterized in that, It further includes a limit seat, a locking plate, and two sets of locking driving mechanisms. The locking plate is located on the upper end surface of the limit seat in the vertical direction. The upper end surface of the limit seat is convexly provided with a limiting portion extending in a first direction. The locking plate includes a fixed section, two flexible sections, and two locking top sections. The two locking top sections are arranged side by side in the first direction, and the two locking top sections are located on one side of the limiting portion in a second direction and form a limiting groove with the limiting portion. One flexible section is connected between one locking top section and the fixed section. The fixed section is fixed on the limit seat. One locking driving mechanism can control one locking top section to move in the second direction. The movable insert is movably located in the limiting groove in the first direction. The movable insert includes two movable inserts and a flexible arm. The two movable inserts are respectively connected to both ends of the flexible arm in the first direction. The piezoelectric ceramic device is arranged on the movable insert, and two driving ends of the piezoelectric ceramic device in the first direction respectively press against the driving side surfaces of the two movable inserts. The two ends of the tension spring are respectively hooked on the two movable inserts in the first direction. One locking top section can press against the side surface of one movable insert in the second direction. The second direction and the first direction are perpendicularly arranged in the horizontal direction. The movable insert is used for installing a peristaltic plate.

2. The peristaltic fine adjustment mechanism according to claim 1, wherein: Each of the locking driving mechanisms includes a first air cylinder and a first runner. The first air cylinder is arranged on the fixed section, and the first piston rod of the first air cylinder extends in the first direction. A convex platform is convexly provided on the driving surface of the first piston rod close to the locking top section in the second direction. The first runner is rotatably supported on one locking top section around the vertical direction, and the outer peripheral wall of the first runner can press against the driving surface or the convex platform of the first piston rod. When the outer peripheral wall of the first runner presses against the driving surface of the first piston rod, the locking top section moves away from the movable insert in the second direction to release the movable insert. When the outer peripheral wall of the first runner presses against the convex platform, the locking top section moves towards the movable insert in the second direction to lock the movable insert.

3. The peristaltic fine adjustment mechanism according to claim 2, wherein: Each of the locking driving mechanisms further includes a second runner. The second runner is rotatably supported on the fixed section around the vertical direction, and the outer peripheral wall of the second runner abuts against the contact surface of the first piston rod. The contact surface of the first piston rod and the driving surface of the first piston rod are oppositely arranged in the second direction.

4. The peristaltic fine adjustment mechanism according to claim 1, wherein: Each of the locking driving mechanisms includes a second air cylinder, a driving rod, and a third runner. The second air cylinder is arranged on the fixed section, and the second piston rod of the second air cylinder extends in the first direction. A driving shaft is arranged on the second piston rod. A waist-shaped groove is formed at the first end of the driving rod. The waist-shaped groove is rotatably sleeved on the driving shaft. A second end of the driving rod is provided with an eccentric wheel. The eccentric wheel is rotatably supported on the fixed section about a vertical direction. The third runner is rotatably supported on one of the locking top sections about a vertical direction. An outer peripheral wall of the third runner abuts against an outer peripheral wall of the eccentric wheel to force the third runner to drive the locking top section to move in the second direction.

5. The peristaltic fine adjustment mechanism according to claim 1, wherein: Each of the locking driving mechanisms includes a third air cylinder and a first swing rod. The third air cylinder is disposed on the fixed section. A third piston rod of the third air cylinder extends in the first direction. A first hinge shaft is disposed on the third piston rod. A second hinge shaft is disposed on one of the locking top sections; A first end of the first swing rod is hinged to the first hinge shaft. A second end of the first swing rod is hinged to the second hinge shaft to force the locking top section to move in the second direction.

6. The peristaltic fine adjustment mechanism according to claim 5, wherein: Each of the locking driving mechanisms further includes a second swing rod. A third hinge shaft is disposed on the fixed section. A first end of the second swing rod is hinged to the first hinge shaft. A second end of the second swing rod is hinged to the third hinge shaft. The third hinge shaft and the second hinge shaft are symmetrically disposed with respect to the third piston rod.

7. The peristaltic fine adjustment mechanism according to any one of claims 1 to 6, wherein: The limiting groove is a dovetail groove. The movable insert is in a dovetail shape and is adapted to be located in the dovetail groove.

8. A circuit board drilling device, comprising a workbench and a first clamping mechanism. The first clamping mechanism includes a first peristaltic plate and a peristaltic fine adjustment mechanism, wherein: The peristaltic fine adjustment mechanism is the peristaltic fine adjustment mechanism according to any one of claims 1 to 7 above; A limiting seat of the peristaltic fine adjustment mechanism is disposed on the workbench. The first peristaltic plate is disposed on a movable insert of the peristaltic fine adjustment mechanism to control the first peristaltic plate to move in the first direction. The first peristaltic plate is provided with a first clamping hole.

9. The circuit board drilling device according to claim 8, wherein: The circuit board drilling device further includes a second clamping mechanism. The second clamping mechanism includes a second peristaltic plate and two sets of the peristaltic fine adjustment mechanisms. A limiting seat of the first set of the peristaltic fine adjustment mechanisms is disposed on the workbench. A limiting seat of the second set of the peristaltic fine adjustment mechanisms is disposed on a movable insert of the first set of the peristaltic fine adjustment mechanisms. The second peristaltic plate is disposed on a movable insert of the second set of the peristaltic fine adjustment mechanisms to control the second peristaltic plate to move in the first direction and the second direction respectively; The movable inserts of the second set of the peristaltic fine adjustment mechanisms and the movable inserts of the first set of the peristaltic fine adjustment mechanisms are perpendicularly disposed. The second peristaltic plate and the first peristaltic plate are arranged side by side in the second direction. The second peristaltic plate is provided with a second clamping hole.

10. The circuit board drilling device according to claim 9, wherein: The circuit board drilling device further includes a linkage rod and a drive control mechanism. A first insert is provided on the second peristaltic plate. The first end of the linkage rod is hinged to the first insert or the second peristaltic plate. The drive control mechanism can control the second end of the linkage rod to move in the horizontal direction. A second insert is provided on the linkage rod. A second clamping hole is formed between the second clamping portion of the second insert and the first clamping portion of the first insert.

Images