CN217406805U

CN217406805U - Clamping mechanism for drilling circuit board

Info

Publication number: CN217406805U
Application number: CN202123226394.7U
Authority: CN
Inventors: 陈健
Original assignee: Suzhou Dongyi Numerical Control Co ltd
Current assignee: Suzhou Dongyi Numerical Control Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-09-09
Anticipated expiration: 2031-12-21

Abstract

The utility model provides a fixture is used in drilling of circuit board. The fixture for drilling the circuit board comprises a fixing base, a blanking groove is formed in the top of the fixing base, a plurality of telescopic supporting columns distributed in a rectangular array are fixedly mounted on the inner wall of the bottom of the blanking groove, the top ends of the telescopic supporting columns extend to the top of the fixing base, a collecting groove is formed in the outer wall of one side of the fixing base, a plurality of blanking holes communicated with the collecting groove are formed in the inner wall of the bottom of the blanking groove, mounting blocks are fixedly mounted on the outer walls of the two sides of the fixing base, and a vertical plate and a two-way lead screw are fixedly mounted at the top of each mounting block. The utility model provides a fixture for drilling of circuit board has the bottom that can carry out reliable support to the circuit board, effectively avoids the circuit board to take place great deformation and influence drilling precision, convenient operation's advantage in drilling process.

Description

Clamping mechanism for drilling circuit board

Technical Field

The utility model relates to a circuit board processing technology field especially relates to a fixture is used in drilling of circuit board.

Background

The circuit board is also called circuit board, printed circuit board, etc., it makes the circuit mini, visualized, plays an important role in the mass production of fixed circuit and optimizing the layout of electrical appliances, the circuit board will bore many holes to install electronic components in the production process, so will use the corresponding circuit board drilling equipment, in the drilling process, in order to guarantee the circuit board does not shake, usually will use the fixture to carry on the clamping fixation to the circuit board.

Circuit board fixture among the conventional art is in order to dodge the drill bit, and the circuit board is usually from both sides carry out the centre gripping fixed, and the bottom of circuit board lacks sufficient support usually, leads to when drilling the region that is close to the middle part to some circuit boards thin partially, leads to the circuit board to take place great deformation easily to influence drilling accuracy.

Therefore, there is a need to provide a new clamping mechanism for drilling circuit board to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a can carry out reliable support to the bottom of circuit board, effectively avoid the circuit board to take place great deformation and influence drilling precision, convenient operation's circuit board fixture for drilling.

In order to solve the technical problem, the clamping mechanism for drilling the circuit board provided by the utility model comprises a fixed seat, wherein a blanking groove is arranged at the top of the fixed seat, a plurality of telescopic support columns distributed in a rectangular array are fixedly arranged on the inner bottom wall of the blanking groove, the top ends of the telescopic support columns all extend to the upper part of the fixed seat, a collecting groove is arranged on the outer wall of one side of the fixed seat, a plurality of blanking holes communicated with the collecting groove are arranged on the inner bottom wall of the blanking groove, mounting blocks are fixedly arranged on the outer walls of the two sides of the fixed seat, vertical plates are fixedly arranged at the tops of the two mounting blocks, the two vertical plates are rotatably provided with a same bidirectional lead screw, the bidirectional lead screw penetrates through the fixed seat, two driven plates are sleeved on the bidirectional lead screw in a threaded manner and are respectively positioned at the two sides of the fixed seat, the top parts of the two driven plates are fixedly provided with connecting plates, the two connecting plates are fixedly provided with clamping plates, and the outer walls of the two clamping plates at the sides close to each other are fixedly provided with limiting plates; any one scalable support column all includes a fixed cylinder, prescribes a limit to lid, circular slider, pressure spring, dead lever and toper supporting shoe, a fixed cylinder fixed mounting be in on the bottom inner wall of silo, prescribe a limit to the lid screw sleeve and establish the top of a fixed cylinder, circular slider slidable mounting be in on the inner wall of a fixed cylinder, just the top of circular slider with prescribe a limit to the top inner wall of lid and contact, the pressure spring sets up in the fixed cylinder, the top of pressure spring with the bottom of circular slider contacts, the bottom of pressure spring with the bottom inner wall of a fixed cylinder contacts, dead lever fixed mounting be in the top of circular slider, the dead lever with prescribe a limit to lid swing joint, toper supporting shoe fixed mounting be in the top of dead lever.

Preferably, a drawing box is slidably mounted on the inner wall of the bottom of the collecting tank.

Preferably, the outer walls of the two sides of the fixing seat are respectively provided with a fixing hole communicated with the collecting groove, the two-way screw rod penetrates through the collecting groove and the two fixing holes, the inner walls of the two fixing holes are respectively and fixedly provided with a sealing ring, and the two-way screw rod penetrates through the two sealing rings and is connected with the inner rings of the two sealing rings in a rotating and sealing manner.

Preferably, a first mounting hole is formed in the outer wall of one side of the driven plate, a screw is fixedly mounted in the first mounting hole, the bidirectional screw rod penetrates through the screw and is screwed with the inner wall of the screw, two second mounting holes and two linear bearings are fixedly mounted in the second mounting holes, the driven plate is close to two guide slide bars and two guide slide bars are fixedly mounted on the outer wall of one side of the fixing base and are corresponding to the linear bearings and are in sliding connection with the inner wall of the linear bearings, and the guide slide bars are far away from one end of the driven plate and are fixedly connected with the fixing base.

Preferably, hand wheels are fixedly mounted at two ends of the bidirectional screw rod, and a plurality of anti-slip grooves are formed in the outer ring of each hand wheel.

Preferably, the top of the limiting cover is provided with an avoiding hole, and the fixing rod penetrates through the avoiding hole and is movably connected with the inner wall of the avoiding hole.

Preferably, the bottom of the conical supporting block is fixedly provided with a cloth cover, and the limiting cover and the fixing rod are both positioned in the cloth cover.

Compared with the prior art, the utility model provides a fixture for drilling of circuit board has following beneficial effect:

the utility model provides a fixture is used in drilling of circuit board, setting through a plurality of scalable support columns, can carry out enough and even support to the bottom of circuit board, and after supporting with the drill bit, can stretch out and draw back automatically, can not cause great hindrance to the lower brill of drill bit, through two risers, two-way lead screw, two are driven the board, two connecting plates, the setting of two splint and two limiting plates can carry out the centre gripping to the both sides of circuit board and prescribe a limit, and the operation is fairly simple, cooperate the even supporting effect of a plurality of scalable support columns, avoid the circuit board that can be fine to take place great deformation at the in-process of drilling, thereby improve the precision of drilling.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a clamping mechanism for drilling a circuit board according to the present invention;

FIG. 2 is a schematic structural view of the retractable support column shown in FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a top view of the confinement cap shown in FIG. 4;

fig. 5 is a side view of the driven plate shown in fig. 1.

Reference numbers in the figures: 1. a fixed seat; 2. a charging chute; 3. a retractable support column; 4. a blanking hole; 5. collecting tank; 6. mounting blocks; 7. a vertical plate; 8. a bidirectional screw rod; 9. a driven plate; 10. a connecting plate; 11. a splint; 12. a limiting plate; 13. a box is drawn out; 301. a fixed cylinder; 302. a confining cap; 303. a circular slider; 304. compressing the spring; 305. a fixing rod; 306. a tapered support block; 307. and (6) covering with cloth.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1-5, wherein fig. 1 is a schematic structural diagram of a clamping mechanism for drilling a circuit board according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of the retractable support column shown in FIG. 1; FIG. 3 is an enlarged view of portion A of FIG. 1; FIG. 4 is a top view of the confinement cap shown in FIG. 4; fig. 5 is a side view of the driven plate shown in fig. 1. The clamping mechanism for drilling the circuit board comprises a fixed seat 1, wherein a blanking groove 2 is formed in the top of the fixed seat 1, a plurality of telescopic support columns 3 distributed in a rectangular array are fixedly arranged on the inner wall of the bottom of the blanking groove 2, the top ends of the telescopic support columns 3 extend to the upper side of the fixed seat 1, a collecting groove 5 is formed in the outer wall of one side of the fixed seat 1, a plurality of blanking holes 4 communicated with the collecting groove 5 are formed in the inner wall of the bottom of the blanking groove 2, mounting blocks 6 are fixedly arranged on the outer walls of two sides of the fixed seat 1, a plurality of internal thread blind holes are formed in the bottom of each mounting block 6, the mechanism is conveniently and fixedly mounted, vertical plates 7 are fixedly mounted at the tops of the two mounting blocks 6, the same bidirectional lead screw 8 is rotatably mounted on the two vertical plates 7 through bearings, and the bidirectional lead screw 8 penetrates through the fixed seat 1, the both ends of two-way lead screw 8 are all fixedly mounted with hand wheels, in order to avoid skidding during operation, a plurality of antiskid grooves are arranged on the outer ring of the hand wheel, the threaded sleeve on the two-way lead screw 8 is provided with two driven plates 9, namely, the two driven plates 9 are respectively connected with two sections of external threads with opposite rotation directions on the two-way lead screw 8, the two driven plates 9 are respectively positioned at the two sides of the fixed seat 1, the top parts of the two driven plates 9 are all fixedly mounted with connecting plates 10, the connecting plates 10 are L-shaped, the corners are fixedly mounted with reinforcing triangular plates, the two connecting plates 10 are all fixedly mounted with clamping plates 11, the two clamping plates 11 are all fixedly mounted with limiting plates 12 on the outer wall of one side close to each other, referring to figure 3, the cross section of the limiting plate 12 is trapezoidal, the lower part thereof has an inclined plane, the inclined plane has the guiding function, when the clamping plates 11 are close to the circuit board, the limiting plate 12 can smoothly move to the upper part of the circuit board; in order to reliably support a circuit board and not obstruct the descending of a drill bit, in this embodiment, any one of the retractable supporting columns 3 includes a fixed cylinder 301, a limiting cover 302, a circular slider 303, a pressure spring 304, a fixing rod 305 and a tapered supporting block 306, the fixed cylinder 301 is fixedly installed on the bottom inner wall of the charging chute 2, the limiting cover 302 is screwed on the top end of the fixed cylinder 301, specifically, a section of external thread is closely arranged on the outer wall of the fixed cylinder 301, a section of internal thread is arranged on the inner wall of the limiting cover 302, the internal thread is screwed with the external thread, the circular slider 303 is slidably installed on the inner wall of the fixed cylinder 301, the top end of the circular slider 303 is in contact with the top inner wall of the limiting cover 302, the pressure spring 304 is arranged in the fixed cylinder 301, and the top end of the pressure spring 304 is in contact with the bottom of the circular slider 303, the bottom end of the pressure spring 304 is in contact with the inner wall of the bottom of the fixed cylinder 301, the fixed rod 305 is fixedly arranged at the top of the circular sliding block 303, an avoiding hole is formed at the top of the limiting cover 302, the fixing rod 305 penetrates through the avoiding hole and is movably connected with the inner wall of the avoiding hole, the conical supporting block 306 is fixedly installed at the top end of the fixing rod 305, and in an initial state, the pressure spring 304 is in a slightly compressed state, and provides an upward elastic force to the circular slider 303, so that the circular slider 303 is tightly attached to the top inner wall of the limiting cover 302, meanwhile, the plurality of conical supporting blocks 306 are positioned on the same horizontal plane, the conical supporting blocks 306 are made of tungsten steel and have the characteristic of high hardness, and the elastic support is carried out by the pressure spring 304, and the drill bit can move downwards after being propped by the drill bit and cannot be subjected to overlarge propping force, so that the top of the drill bit can not be obviously scratched.

In order to conveniently remove the fragments, a drawing box 13 is slidably mounted on the inner wall of the bottom of the collecting tank 5, and the fallen fragments can finally fall into the drawing box 13 in the drilling process.

In order to dodge two-way lead screw 8, all seted up on the both sides outer wall of fixing base 1 with the fixed orifices that collecting vat 5 is linked together, two-way lead screw 8 runs through collecting vat 5 and two fixed orificess, in order to avoid the piece to pass the fixed orifices and collapse into the screw thread of two-way lead screw 8, two still equal fixed mounting has the sealing washer of rubber material on the inner wall of fixed orifices, two-way lead screw 8 runs through two the sealing washer and with two the inner circle of sealing washer rotates sealing connection.

In order to realize the reliable threaded connection relationship between the driven plate 9 and the bidirectional screw 8, a first mounting hole is arranged on the outer wall of one side of the driven plate 9, a nut is fixedly arranged in the first mounting hole, the bidirectional screw 8 penetrates through the nut and is screwed with the inner wall of the nut, in order to limit the remote direction of the driven plate 9 so that the driven plate can only slide transversely, two second mounting holes are arranged on the outer wall of one side of the driven plate 9, linear bearings are fixedly mounted in the two second mounting holes, driven board 9 is close to fixed mounting has two direction slide bars on the one side outer wall of fixing base 1, two the direction slide bar all runs through corresponding linear bearing and with corresponding linear bearing's inner wall sliding connection, two the direction slide bar is kept away from driven board 9's one end all with fixing base 1 fixed connection.

In order to prevent the debris from falling into the fixed cylinder 301, a cloth cover 307 is fixedly installed at the bottom of the tapered supporting block 306, and the limiting cover 302 and the fixing rod 305 are both located in the cloth cover 307.

The utility model provides a fixture for drilling of circuit board's theory of operation as follows:

when the bidirectional screw driver is used, a circuit board to be processed is placed at the tops of the telescopic support columns 3 and approximately aligned, then the bidirectional screw 8 is clockwise rotated through the hand wheel, and as the two driven plates 9 are both limited by the corresponding two guide slide bars and are in threaded connection with the bidirectional screw 8, the two driven plates 9 can be driven to move oppositely in the clockwise rotation process of the bidirectional screw 8, and the two driven plates 9 drive the corresponding connecting plates 10 to move, so that the two clamping plates 11 move oppositely, and the bidirectional screw 8 continuously rotates, finally, the circuit board can be clamped and fixed by the two clamping plates 11, and in the process that the two clamping plates 11 are close to the circuit board, the two limiting plates 12 can be smoothly clamped above the edges of the two sides of the circuit board under the action of the inclined planes of the limiting plates 12;

in the process of drilling, because the bottom of the circuit board is uniformly supported by the plurality of telescopic supporting columns 3, and two side edges of the circuit board are also clamped and fixed, and meanwhile, the tops of the two side edges of the circuit board are also limited by the two limiting plates 12 respectively, the circuit board is not easy to deform greatly in the process of drilling the drill bit downwards, if the drill bit collides with the conical supporting block 306 of one telescopic supporting column 3 in the drilling process, because the conical supporting block 306 is elastically supported by the pressure spring 304, the conical supporting block 306 can move downwards after being stressed, so that the drill bit cannot be greatly hindered (the influence on the supporting stability of the circuit board caused by the descending of one single conical supporting block 306 is small), the pressure spring 304 can be extruded by the circular sliding block 303 in the process of descending along with the conical supporting block 306, and the pressure spring 304 can store a certain amount of elastic potential energy, when the drill bit rises, the circular slider 303 can be reset under the elastic force of the pressure spring 304, the circular slider 303 drives the conical supporting block 306 to rise through the fixing rod 305, and when the top of the circular slider 303 is contacted with the inner wall of the top of the limiting cover 302, the conical supporting block 306 is reset, and the top of the conical supporting block is contacted with the bottom of the circuit board again;

in the drilling process, partial chippings can enter the blanking groove 2 through the drilled hole, the chippings cannot enter the fixing barrel 301 due to the protection of the cloth cover 307, the chippings in the blanking groove 2 can fall into the drawing box 13 in the collecting groove 5 through the blanking hole 4, and the drawing box 13 is periodically drawn out to clean the chippings.

the utility model provides a fixture is used in circuit board drilling, setting through a plurality of scalable support column 3, can carry out enough and even support to the bottom of circuit board, and after supporting with the drill bit, can stretch out and draw back automatically, can not cause great hindrance to the lower brill of drill bit, through two risers 7, two-way lead screw 8, two are driven board 9, two connecting plates 10, two splint 11 and two limiting plate 12's setting can carry out the centre gripping to the both sides of circuit board and prescribe a limit to, and the operation is fairly simple, cooperate a plurality of scalable support column 3's even support effect, avoid the circuit board that can be fine to take place great deformation at the in-process of drilling, thereby improve the precision of drilling.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A clamping mechanism for drilling a circuit board comprises a fixed seat and is characterized in that a blanking groove is formed in the top of the fixed seat, a plurality of telescopic support columns distributed in a rectangular array are fixedly mounted on the inner wall of the bottom of the blanking groove, the top ends of the telescopic support columns extend to the upper side of the fixed seat, a collecting groove is formed in the outer wall of one side of the fixed seat, a plurality of blanking holes communicated with the collecting groove are formed in the inner wall of the bottom of the blanking groove, mounting blocks are fixedly mounted on the outer walls of two sides of the fixed seat, vertical plates are fixedly mounted at the tops of the two mounting blocks, the two vertical plates are rotatably mounted with a same bidirectional lead screw, the bidirectional lead screw penetrates through the fixed seat, two driven plates are sleeved on the bidirectional lead screw in a threaded manner and are respectively located on two sides of the fixed seat, the top parts of the two driven plates are fixedly provided with connecting plates, the two connecting plates are fixedly provided with clamping plates, and the outer walls of the two clamping plates on the sides close to each other are fixedly provided with limiting plates;

any one scalable support column all includes a fixed cylinder, prescribes a limit to lid, circular slider, pressure spring, dead lever and toper supporting shoe, a fixed cylinder fixed mounting be in on the bottom inner wall of silo, prescribe a limit to the lid screw sleeve and establish the top of a fixed cylinder, circular slider slidable mounting be in on the inner wall of a fixed cylinder, just the top of circular slider with prescribe a limit to the top inner wall of lid and contact, the pressure spring sets up in the fixed cylinder, the top of pressure spring with the bottom of circular slider contacts, the bottom of pressure spring with the bottom inner wall of a fixed cylinder contacts, dead lever fixed mounting be in the top of circular slider, the dead lever with prescribe a limit to lid swing joint, toper supporting shoe fixed mounting be in the top of dead lever.

2. A clamping mechanism for circuit board drilling according to claim 1, characterized in that a drawing box is slidably mounted on the inner wall of the bottom of the collecting tank.

3. The clamping mechanism for drilling the circuit board according to claim 1, wherein fixing holes communicated with the collecting groove are formed in outer walls of two sides of the fixing seat, the two-way screw rod penetrates through the collecting groove and the two fixing holes, sealing rings are fixedly mounted on inner walls of the two fixing holes, and the two-way screw rod penetrates through the two sealing rings and is connected with inner rings of the two sealing rings in a rotating and sealing manner.

4. The clamping mechanism for drilling the circuit board according to claim 1, wherein a first mounting hole is formed in an outer wall of one side of the driven plate, a nut is fixedly mounted in the first mounting hole, the bidirectional screw rod penetrates through the nut and is screwed with an inner wall of the nut, two second mounting holes are formed in an outer wall of one side of the driven plate, linear bearings are fixedly mounted in the two second mounting holes, two guide slide bars are fixedly mounted on an outer wall of one side of the driven plate, which is close to the fixing seat, penetrate through the corresponding linear bearings and are in sliding connection with the corresponding inner walls of the linear bearings, and one ends of the two guide slide bars, which are far away from the driven plate, are fixedly connected with the fixing seat.

5. The clamping mechanism for drilling the circuit board according to claim 1, wherein hand wheels are fixedly mounted at two ends of the bidirectional screw rod, and a plurality of anti-slip grooves are formed in the outer ring of each hand wheel.

6. The clamping mechanism for drilling the circuit board according to claim 1, wherein an avoiding hole is formed in the top of the limiting cover, and the fixing rod penetrates through the avoiding hole and is movably connected with the inner wall of the avoiding hole.

7. The clamping mechanism for drilling the circuit board according to claim 1, wherein a cloth cover is fixedly mounted at the bottom of the conical supporting block, and the limiting cover and the fixing rod are both positioned in the cloth cover.