CN216266481U - Four-station drilling equipment for circuit board - Google Patents

Abstract

The utility model discloses four-station drilling equipment for a circuit board, which comprises an operation box, wherein an electric telescopic rod, four groups of ventilation windows, two groups of blowing fans and two groups of filter screen covers are arranged on the top surface inside the operation box, a rotating shaft is fixedly installed at one end of the electric telescopic rod, a first bearing is installed on the side wall of the rotating shaft in a sleeved mode, an installation plate is installed on the side wall of the first bearing in a sleeved mode, two groups of first threaded through holes and four groups of limiting through grooves are formed in the upper portion of the installation plate, fastening bolts penetrate through the two groups of first threaded through holes, T-shaped sliding plates are installed in the four groups of limiting through grooves in a sliding mode, and second bearings, two groups of second threaded through holes and motors are arranged on the upper portions of the four groups of T-shaped sliding plates. Has the advantages that: according to the utility model, the collection lifting plate is adopted, and the collection lifting plate is arranged, so that the debris particles entering the collection structure can be prevented from being lifted again, and the working efficiency of the circuit board four-station drilling equipment is improved.

Description

Four-station drilling equipment for circuit board

Technical Field

The utility model relates to the technical field of circuit board drilling, in particular to four-station drilling equipment for a circuit board.

Background

The circuit board is one of electronic industry's important part, along with electronic equipment's continuous development, the demand of circuit board increases with each day, has to make circuit miniaturation, visualization, during the actual production circuit board, need drill to it to the installation of electronic component and installation screw is used, uses circuit board quadruplex position drilling equipment now more, accomplishes the drilling work of circuit board, and the actual use has advantages such as drilling is accurate, easy operation and use are stable.

However, current circuit board quadruplex position drilling equipment, the drill bit carries out the drilling during operation, can be along with the piece granule production, blow the fan with it blow in when collecting inside the structure, no interception structure, the fan that blows the mobile air that produces, can be with the piece granule of collecting inside the structure uplift, fill inside whole control box, wait for when it independently falls down, the required time is longer, reduce circuit board quadruplex position drilling equipment's work efficiency, secondly, support the structure of fixed line board, mostly be fixed knot constructs, when drilling position and circuit board fixed knot construct the position coincidence, after the drill bit runs through the circuit board, can contact the fixed knot structure of circuit board, cause the damage to its surface, can't adjust circuit board fixed knot constructs's service position according to the user demand, bring inconvenience for circuit board quadruplex position drilling equipment's use.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides four-station drilling equipment for a circuit board, which has the advantages of preventing the debris particles entering the collecting structure from being lifted again and adjusting the use position of a circuit board fixing structure according to the use requirement, thereby solving the problems in the background art.

(II) technical scheme

In order to realize the advantages that the debris particles entering the collecting structure can be prevented from being lifted again, and the use position of the circuit board fixing structure can be adjusted according to the use requirement, the utility model adopts the following specific technical scheme:

a circuit board four-station drilling device comprises an operation box, wherein an electric telescopic rod, four groups of ventilation windows, two groups of blowing fans and two groups of filter screen covers are arranged on the top surface inside the operation box, a rotating shaft is fixedly installed at one end of the electric telescopic rod, a first bearing is installed on the side wall of the rotating shaft in a sleeved mode, an installation plate is installed on the side wall of the first bearing in a sleeved mode, two groups of first thread through holes and four groups of limiting through grooves are formed in the upper portion of the installation plate, fastening bolts penetrate through the two groups of first thread through holes, a T-shaped sliding plate is installed inside the four groups of limiting through grooves in a sliding mode, a second bearing, two groups of second thread through holes and a motor are arranged on the upper portion of each of the four groups of T-shaped sliding plates, the output ends of the four groups of motors penetrate through the four groups of second bearings respectively, and drill bits are fixedly installed at the output ends of the four groups of motors, eight groups the inside of second screw thread through-hole all runs through and installs mounting bolt, the internally mounted of control box has two sets of adjusting screw, collects lifter plate and spacing orifice plate, the support filter screen is installed on the upper portion of spacing orifice plate, two sets of primary and secondary hinges are installed to the terminal surface of control box, and two sets of the one end tip fixed mounting of primary and secondary hinge has the cabinet door to observation window and lockhole are installed to the terminal surface of cabinet door.

Further, the lower part fixed mounting of spacing orifice plate has flexible hose, and flexible hose's one end tip and the upper portion fixed connection who collects the lifter plate, the through hole has been seted up to the inside bottom surface of control box, the fixed lower part of collecting the lifter plate runs through and installs the aqueduct, and the one end of aqueduct runs through the through hole, the one end opening part of aqueduct is provided with the sealing plug, the lower part fixed mounting who supports the filter screen has the spliced pole, and the one end tip fixed mounting of spliced pole has clean brush board.

Furthermore, clear water is arranged in the inner space of the collecting lifting plate and the telescopic hose.

Furthermore, the side walls of the two groups of adjusting screw rods are sleeved with adjusting threaded pipes and supporting threaded pipes, and rubber pipes are fixedly arranged at opposite ends of the two groups of adjusting threaded pipes on the same horizontal line.

Furthermore, the two groups of adjusting screw rods are meshed with the four groups of adjusting threaded pipes and the four groups of supporting threaded pipes.

Furthermore, the length of the two groups of adjusting screw rods is smaller than the internal width of the operation box, and the sum of the lengths of the group of adjusting screw rods and the two groups of supporting threaded pipes on the same horizontal line is larger than the internal width of the operation box.

Further, control panel and supply socket are installed to one side of operation box, control panel passes through electric wire and electric telescopic handle, two sets of fan, four groups of blowing motor and supply socket electric connection.

Furthermore, four groups of support columns are installed on the lower portion of the operation box.

(III) advantageous effects

Compared with the prior art, the utility model provides four-station drilling equipment for a circuit board, which has the following beneficial effects:

(1) the utility model adopts the collecting lifting plate, when the circuit board four-station drilling equipment is actually used, the control panel is utilized to enable the electric telescopic rod, the two groups of blowing fans and the four groups of motors to start working, the electric telescopic rod extends to abut against the mounting plate to move downwards, the output ends of the four groups of motors respectively drive the drill bits to rotate, when the four groups of drill bits contact the circuit board, the debris particles are generated, the flowing air generated by the two groups of blowing fans blows the debris particles into the inner part of the telescopic hose through the supporting filter screen and contacts with clean water, the debris particles cannot be continuously lifted when contacting with the clean water, when the debris particles need to be led out, an operator removes the sealing plug with hands, the clean water together with the debris particles is led out through the water guide pipe, the operator can move the water guide pipe upwards with the hands to drive the collecting lifting plate to move upwards, when the upper part of the collecting lifting plate contacts with the cleaning brush plate, the upper part of the collecting lifting plate can be cut and rubbed, make partial piece granule and collect the lifter plate separation, avoid partial piece granule gathering on the upper portion of collecting the lifter plate, through the collection lifter plate that sets up, can prevent to get into and collect the inside piece granule of structure and raise once more, improved circuit board quadruplex position drilling equipment's work efficiency.

(2) The utility model adopts the adjusting screw rods, when the circuit board needs to be fixed, two groups of adjusting screw rods are horizontally placed in the operation box, the two groups of adjusting screw rods are ensured to be positioned on the same horizontal plane, the two groups of adjusting screw rods are moved to expected positions, then the two groups of adjusting screw rods are meshed with the four groups of adjusting threaded pipes and the four groups of supporting threaded pipes, an operator rotates the four groups of supporting threaded pipes clockwise and anticlockwise, because the sum of the lengths of the group of adjusting screw rods and the two groups of supporting threaded pipes positioned on the same horizontal line is larger than the internal width of the operation box, when the inner walls of the four groups of supporting threaded pipes are in close contact with each other, the two groups of adjusting screw rods are stably fixed, then the four groups of adjusting threaded pipes are rotated clockwise and anticlockwise, the two groups of adjusting threaded pipes positioned on the same horizontal line move oppositely, and the four groups of rubber pipes follow the four groups of adjusting threaded pipes to move synchronously, when adjusting the screwed pipe and removing to the anticipated position, place the upper portion of four groups of rubber tubes with the circuit board, continue rotatory four groups of regulation screwed pipes, when the one end tip of adjusting the screwed pipe and circuit board in close contact with, the circuit board is stably fixed, when the position of use of two sets of adjusting screw rods of needs change, repeated above-mentioned operation can get, through the adjusting screw rod that sets up, can adjust the position of use of circuit board fixed knot structure according to the user demand, bring the facility for the use of circuit board quadruplex position drilling equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a four-station drilling device for circuit boards according to the present invention;

FIG. 2 is a front view of a four-station drilling apparatus for circuit boards according to the present invention;

FIG. 3 is a perspective view of a T-shaped slide plate according to the present invention;

FIG. 4 is a top view of the proposed mounting plate;

FIG. 5 is an enlarged view of A of FIG. 1 in accordance with the present invention;

FIG. 6 is an enlarged view of B of FIG. 1 in accordance with the present invention;

fig. 7 is an enlarged view of C of fig. 1 according to the present invention.

In the figure:

1. an operation box; 2. an electric telescopic rod; 3. a ventilation window; 4. a blower fan; 5. a filter screen cover; 6. a rotating shaft; 7. a first bearing; 8. mounting a plate; 9. a first threaded through hole; 10. a limiting through groove; 11. fastening a bolt; 12. a T-shaped sliding plate; 13. a second bearing; 14. a second threaded through hole; 15. installing a bolt; 16. a motor; 17. a drill bit; 18. adjusting the screw rod; 19. collecting the lifting plate; 20. a primary and secondary hinge; 21. a cabinet door; 22. an observation window; 23. a lock hole; 24. limiting the pore plate; 25. supporting the filter screen; 26. a flexible hose; 27. a through hole; 28. a water conduit; 29. a sealing plug; 30. connecting columns; 31. cleaning the brush plate; 32. adjusting the threaded pipe; 33. supporting the threaded pipe; 34. a rubber tube.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the utility model, a four-station drilling device for a circuit board is provided.

Referring to the drawings and the detailed description, as shown in fig. 1-7, the four-station drilling equipment for circuit boards according to the embodiment of the utility model includes an operation box 1, an electric telescopic rod 2, four sets of ventilation windows 3, two sets of blowing fans 4 and two sets of filter screen covers 5 are arranged on the top surface of the inside of the operation box 1, a rotating shaft 6 is fixedly installed at one end of the electric telescopic rod 2, a first bearing 7 is installed on the side wall of the rotating shaft 6 in a sleeved mode, an installation plate 8 is installed on the side wall of the first bearing 7 in a sleeved mode, two sets of first threaded through holes 9 and four sets of limiting through grooves 10 are formed in the upper portion of the installation plate 8, fastening bolts 11 are installed in the two sets of first threaded through holes 9 in a penetrating mode, T-shaped sliding plates 12 are installed in the four sets of limiting through grooves 10 in a sliding mode, and second bearings 13, two sets of second threaded through holes 14 and motors 16 are arranged on the upper portions of the four sets of T-shaped sliding plates 12, the output ends of the four sets of motors 16 respectively run through the four sets of second bearings 13, the drill bits 17 are fixedly mounted on the output ends of the four sets of motors 16, the mounting bolts 15 are mounted inside the eight sets of second threaded through holes 14 in a running-through manner, two sets of adjusting screws 18 are mounted inside the operation box 1, the lifting plate 19 and the limiting pore plate 24 are collected, the supporting filter screen 25 is mounted on the upper portion of the limiting pore plate 24, two sets of primary and secondary hinges 20 are mounted on the end face of the operation box 1, a cabinet door 21 is fixedly mounted at one end of the two sets of primary and secondary hinges 20, an observation window 22 and a lock hole 23 are mounted on the end face of the cabinet door 21, the electric telescopic rod 2, the two sets of blowing fans 4 and the four sets of motors 16 are of the existing structure, and redundant description is omitted.

In one embodiment, an extensible hose 26 is fixedly mounted on the lower portion of the limiting orifice plate 24, one end of the extensible hose 26 is fixedly connected with the upper portion of the collecting lifting plate 19, a through hole 27 is formed in the inner bottom surface of the operation box 1, a water guide pipe 28 is fixedly mounted on the lower portion of the collecting lifting plate 19 in a penetrating manner, one end of the water guide pipe 28 penetrates through the through hole 27, a sealing plug 29 is arranged at an opening at one end of the water guide pipe 28, a connecting column 30 is fixedly mounted on the lower portion of the supporting filter screen 25, a cleaning brush plate 31 is fixedly mounted at one end of the connecting column 30, when the circuit board four-station drilling equipment is actually used, the electric telescopic rod 2, the two sets of blowing fans 4 and the four sets of motors 16 start to work by using the control panel, the electric telescopic rod 2 extends to abut against the mounting plate 8 to move downwards, the output ends of the four sets of motors 16 respectively drive the drill bits 17 to rotate, when the four sets of drill bits 17 contact the circuit board, the chip particles are generated, the flowing air generated by the two groups of air blowing fans 4 blows the chip particles into the telescopic hose 26 through the supporting filter screen 25 and contacts with the clean water, when the chip particles contact with the clean water, the chip particles cannot be continuously lifted, when the debris particles need to be led out, the operator removes the sealing plug 29 by hand, the clear water together with the debris particles is led out through the water guide pipe 28, the operator can move the water guide pipe 28 on the same hand to drive the collection lifting plate 19 to move upwards, when the upper portion of the collecting lifting plate 19 contacts the cleaning brush plate 31, it scratches the upper portion of the collecting lifting plate 19, so that a part of the debris particles is separated from the collecting lifting plate 19, and the accumulation of a part of the debris particles on the upper portion of the collecting lifting plate 19 is avoided, through the collection lifter plate 19 that sets up, can prevent to get into the inside piece granule of collecting the structure and raise once more, improved circuit board quadruplex position drilling equipment's work efficiency.

In one embodiment, the inner space of the collecting lifter plate 19 and the flexible hose 26 is provided with fresh water, which prevents the debris particles entering the interior of the flexible hose 26 from being lifted up again.

In one embodiment, the side walls of the two sets of adjusting screws 18 are sleeved with the adjusting threaded pipes 32 and the supporting threaded pipes 33, the opposite ends of the two sets of adjusting threaded pipes 32 on the same horizontal line are fixedly provided with the rubber pipes 34, when the circuit board needs to be fixed, the two sets of adjusting screws 18 are firstly horizontally placed in the operation box 1 to ensure that the two sets of adjusting screws 18 are positioned on the same horizontal plane, the two sets of adjusting screws 18 are moved to the expected positions, then the two sets of adjusting screws 18 are meshed with the four sets of adjusting threaded pipes 32 and the four sets of supporting threaded pipes 33, an operator rotates the four sets of supporting threaded pipes 33 clockwise and counterclockwise, because the sum of the lengths of the set of adjusting screws 18 and the two sets of supporting threaded pipes 33 on the same horizontal line is greater than the internal width of the operation box 1, when the inner walls of the four sets of supporting threaded pipes 33 are in close contact with each other inner wall of the operation box 1, the two groups of adjusting screw rods 18 are stably fixed, and then the four groups of adjusting threaded pipes 32 are rotated clockwise and anticlockwise to enable the two groups of adjusting threaded pipes 32 on the same horizontal line to move oppositely, the four groups of rubber pipes 34 follow the four groups of adjusting threaded pipes 32 to move synchronously, when the adjusting threaded pipes 32 move to an expected position, the circuit board is placed on the upper portions of the four groups of rubber pipes 34, the four groups of adjusting threaded pipes 32 are rotated continuously, when one end portion of each adjusting threaded pipe 32 is in close contact with the circuit board, the circuit board is stably fixed, when the use positions of the two groups of adjusting screw rods 18 need to be changed, the operation is repeated, the use positions of the circuit board fixing structure can be adjusted according to use requirements through the arranged adjusting screw rods 18, and convenience is brought to the use of circuit board four-position drilling equipment.

In one embodiment, the two sets of adjustment screws 18 are intermeshed with the four sets of adjustment threaded pipes 32 and the four sets of support threaded pipes 33 to facilitate adjustment of the use positions of the four sets of adjustment threaded pipes 32 and the four sets of support threaded pipes 33.

In one embodiment, the lengths of the two sets of adjusting screws 18 are smaller than the internal width of the operation box 1, and the sum of the lengths of the two sets of adjusting screws 18 and the two sets of supporting threaded pipes 33 on the same horizontal line is larger than the internal width of the operation box 1, thereby bringing possibility for installation and use of the two sets of adjusting screws 18.

In one embodiment, a control panel and a power socket are installed on one side of the operation box 1, the control panel is electrically connected with the electric telescopic rod 2, the two sets of air blowing fans 4, the four sets of motors 16 and the power socket through electric wires, and the control panel can be realized through simple programming by a person skilled in the art, which belongs to the common knowledge in the art, and only is used without modification, so that the detailed description of a control mode and circuit connection is omitted.

In one embodiment, four sets of support columns are installed on the lower portion of the operation box 1, and the four sets of support columns are used for supporting the four-station drilling equipment for fixing the circuit board.

The working principle is as follows:

when the circuit board four-station drilling equipment is actually used, a power line of a connecting circuit is connected with a power socket, the control panel is utilized to enable the electric telescopic rod 2, the two groups of blowing fans 4 and the four groups of motors 16 to start working, the electric telescopic rod 2 extends to abut against the mounting plate 8 to move downwards, the output ends of the four groups of motors 16 respectively drive the drill bits 17 to rotate, when the four groups of drill bits 17 contact the circuit board, debris particles can be generated, flowing air generated by the two groups of blowing fans 4 blows the debris particles into the telescopic hose 26 through the supporting filter screen 25 and contacts with clean water, when the debris particles contact with the clean water, the debris particles cannot be lifted continuously, when the debris particles need to be led out, an operator removes the sealing plug 29 by hand, the clean water together with the debris particles is led out through the water guide pipe 28, the operator can move the water guide pipe 28 upwards with the hand to drive the collecting lifting plate 19 to move upwards, when the upper part of the collecting lifting plate 19 contacts with the cleaning brush plate 31, the upper part of the collecting lifting plate 19 is scratched to separate partial debris particles from the collecting lifting plate 19, so that the partial debris particles are prevented from being gathered on the upper part of the collecting lifting plate 19, the debris particles entering the collecting structure can be prevented from being lifted again through the arranged collecting lifting plate 19, the working efficiency of the four-station drilling equipment for the circuit board is improved, meanwhile, when the circuit board needs to be fixed, two groups of adjusting screw rods 18 are firstly horizontally placed in the operation box 1, the two groups of adjusting screw rods 18 are ensured to be positioned on the same horizontal plane, the two groups of adjusting screw rods 18 are moved to expected positions, then the two groups of adjusting screw rods 18 are meshed with the four groups of adjusting threaded pipes 32 and the four groups of supporting threaded pipes 33, an operator rotates the four groups of supporting threaded pipes 33 clockwise and anticlockwise, and because the sum of the lengths of the group of adjusting screw rods 18 and the two groups of supporting threaded pipes 33 positioned on the same horizontal line is greater than the inner width of the operation box 1, therefore, when the inner walls of the four groups of supporting threaded pipes 33 and the inner walls of the operation box 1 are in close contact, the two groups of adjusting screws 18 are stably fixed, then the four groups of adjusting threaded pipes 32 are rotated clockwise and counterclockwise, the two groups of adjusting threaded pipes 32 on the same horizontal line move oppositely, the four groups of rubber pipes 34 move synchronously along with the four groups of adjusting threaded pipes 32, when the adjusting threaded pipes 32 move to the expected positions, the circuit board is placed on the upper parts of the four groups of rubber pipes 34, the four groups of adjusting threaded pipes 32 are rotated continuously, when the end part of one end of the adjusting threaded pipe 32 is in close contact with the circuit board, the circuit board is stably fixed, when the use positions of the two groups of adjusting screws 18 need to be changed, the operation is repeated, through the arranged adjusting screws 18, the use positions of the circuit board fixing structure can be adjusted according to use requirements, and convenience is brought to the use of the four-station drilling equipment.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The utility model provides a circuit board quadruplex position drilling equipment, a serial communication port, including control box (1), the inside top surface of control box (1) is provided with electric telescopic handle (2), four group louver (3), two sets of fan (4) and two sets of filter screen cover (5) of blowing, the one end tip fixed mounting of electric telescopic handle (2) has pivot (6), and the lateral wall of pivot (6) cup joints and installs first bearing (7) to the lateral wall of first bearing (7) cup joints and installs mounting panel (8), two sets of first screw thread through-hole (9) and four groups spacing logical groove (10), two sets of have been seted up on the upper portion of mounting panel (8) two sets of fastening bolt (11) are all run through to be installed in the inside of first screw thread through-hole (9), four groups the equal slidable mounting in inside of spacing logical groove (10) has T type slide (12), and four groups the upper portion of T type slide (12) all is provided with second bearing (13), Two sets of second screw thread through-hole (14) and motor (16), four groups the output of motor (16) runs through four groups respectively second bearing (13), four groups the equal fixed mounting of output of motor (16) has drill bit (17), eight groups the inside of second screw thread through-hole (14) all runs through and installs construction bolt (15), the internally mounted of control box (1) has two sets of adjusting screw (18), collects lifter plate (19) and spacing orifice plate (24), support filter screen (25) are installed on the upper portion of spacing orifice plate (24), two sets of primary and secondary hinge (20) are installed to the terminal surface of control box (1), and are two sets of the one end fixed mounting of primary and secondary hinge (20) has cabinet door (21) to observation window (22) and lockhole (23) are installed to the terminal surface of cabinet door (21).

2. The circuit board four-station drilling equipment according to claim 1, characterized in that a telescopic hose (26) is fixedly mounted on the lower portion of the limiting hole plate (24), one end of the telescopic hose (26) is fixedly connected with the upper portion of the collecting lifting plate (19), a through hole (27) is formed in the inner bottom surface of the operating box (1), a water guide pipe (28) is fixedly installed on the lower portion of the collecting lifting plate (19) in a penetrating mode, one end of the water guide pipe (28) penetrates through the through hole (27), a sealing plug (29) is arranged at one end of the water guide pipe (28), a connecting column (30) is fixedly mounted on the lower portion of the supporting filter screen (25), and a cleaning brush plate (31) is fixedly mounted on one end of the connecting column (30).

3. A circuit board four-station drilling apparatus according to claim 2, characterized in that the inner spaces of the collecting lifting plate (19) and the telescopic hose (26) are provided with clean water.

4. The four-station drilling equipment for the circuit boards as claimed in claim 1, wherein the side walls of the two groups of adjusting screws (18) are sleeved with adjusting threaded pipes (32) and supporting threaded pipes (33), and rubber pipes (34) are fixedly mounted at opposite ends of the two groups of adjusting threaded pipes (32) on the same horizontal line.

5. A circuit board four-station drilling apparatus according to claim 4, characterized in that two sets of said adjusting screws (18) are intermeshed with four sets of said adjusting threaded pipes (32) and four sets of said supporting threaded pipes (33).

6. A circuit board four-station drilling equipment according to claim 4, characterized in that the length of two sets of said adjusting screw rods (18) is less than the internal width of the operation box (1), and the sum of the lengths of one set of said adjusting screw rods (18) and two sets of said supporting threaded pipes (33) on the same horizontal line is greater than the internal width of the operation box (1).

7. The four-station drilling equipment for the circuit boards as claimed in claim 1, wherein a control panel and a power socket are installed on one side of the operation box (1), and the control panel is electrically connected with the electric telescopic rods (2), the two groups of blowing fans (4), the four groups of motors (16) and the power socket through electric wires.

8. A circuit board four-station drilling equipment according to claim 1, characterized in that the lower part of the operation box (1) is provided with four groups of supporting columns.

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