CN201111454Y - Improved main shaft lifting mechanism of printed circuit board drilling machine - Google Patents

Abstract

The utility model relates to an improved spindle lifting mechanism of a printed circuit board drilling machine, which mainly means that a lower base for positioning a spindle is provided with a fixed lower base and a movable lower base, the fixed lower base is fixedly arranged on a reciprocating table of the drilling machine, two sides of the center of the movable lower base are slidably arranged on the fixed lower base, and the spindle is arranged in the center of the movable lower base; in addition, three double-stroke cylinders are arranged between the upper base and the pressure foot in a triangular shape. The pressure foot can be supported by a double-stroke cylinder in triangular configuration, so that more stable and even pressure is applied to the printed circuit board, and the formed drilling hole is more accurate; the main shaft and the movable lower base are arranged on the fixed lower base in a sliding way in the same axis; the drill point installed on the main shaft has accurate drilling action without deviation, and simultaneously, the high heat generated by the up-and-down sliding of the movable lower base can be uniformly diffused and conducted all around, so that the drill point does not have the deviation phenomenon of uneven heat conduction.

Description

The Improved Spindle Elevating Mechanism of Printed Circuit Board Drilling Machine

technical field

The utility model relates to an improved main shaft elevating mechanism of a printed circuit board drilling machine, in particular to a device with simple setting, easy assembly and use, which can make the drilling of printed circuit boards more accurate and stable, and extremely In line with practical applicability, ideality and progress, and an unprecedented improvement of the main shaft lifting mechanism of the printed circuit board drilling machine.

Background technique

The main shaft lifting mechanism of the printed circuit board drilling machine in the prior art is roughly shown in Figure 1 and Figure 2, and is mainly provided with a motor bracket 10 fixed on the reciprocating table 2 of the drilling machine, an upper linear slide rail 11, The spring bracket 12, the lower linear slide rail 13, and the linear motor 14 placed on the motor bracket 10 are driven up and down by the linear motor 14 and are slid on the upper base 15 of the upper linear slide rail 11, for the upper base 15 is buffered and placed on the elastic element 16 of the spring bracket 12, the lower base 17 located under the upper base 15 and up and down on the lower linear slide rail 13, fixed on the lower base 17 and provided for the drill A to be installed The main shaft 18, the connecting rod 19 connected to the upper and lower bases 15, 17, the pressure foot 20 located under the main shaft 17, the two-stroke cylinder 21 whose two ends are respectively installed on the pressure foot 20 and the upper base 15 Among them, the lower base 17 is slid on the lower linear slide rail 13 through the upper and lower sliders 171, 172; the double-stroke cylinder 21 is respectively installed on both sides of the pressure foot 20; The lower base is locked on one side of the lower base 17; that is, the upper base 15 can be driven up and down along the upper linear slide rail 11 by the linear motor 14, and the lower base 17 and the main shaft 18 fixed on the upper , will be driven by the connecting rod 19 and move up and down along the lower linear slide rail 13, and the pressure foot 20 can also be driven up and down by the double-stroke cylinder 21, so that the main shaft 18 below the The pressure foot 20 can first touch the printed circuit board to be drilled when it descends, and then the drill A that is installed on the rotation axis (not shown) of the main shaft 18 and rotates at a high speed can be connected to the lower base 17. During the descent, the drilling action is directly performed on the printed circuit board.

It is undeniable that the above-mentioned mode of operation does provide performance for timely use. However, due to the increasing number of drilling holes that should be arranged on the printed circuit board, the spacing of the holes is getting smaller and the drilling accuracy requirements are getting higher and higher. Under such circumstances, the industry finds that there are still some shortcomings in the fly in the ointment, which need to be improved. Right now;

1. Since the main shaft 18 for the installation of the drill needle A is installed on one side of the lower base 17, and the lower base 17 is held and slid on the lower linear slide rail 13 with the corresponding side, so the main shaft 18 is used for the lower The weight on one side of the base 17 will inevitably cause a shear force on the corresponding side of the lower base 17, and jointly, the lower linear slide rail 13 and the upper linear slide rail 13 for the lower base 17 to reciprocate at high speed and continuously slide up and down , Lower sliders 171, 172 are prone to wear and tear, and the gaps produced by the wear will inevitably cause the drill A to be installed on the main shaft 18 to produce unstable deviations. If the accuracy is high, it often has the disadvantage of being unable to achieve precise control.

2. As mentioned above, since the upper and lower rails 171, 172 on one side of the lower base 17 slide on the lower linear slide rail 13 in a shear force, the high heat generated by the high-speed reciprocating sliding is caused by the sliders 171, 172. If the conduction is conducted side by side, and it is not easy to spread evenly to the entire lower base 17, for the main shaft 18 and drill A installed on the other side of the lower base 17, there is a phenomenon of drilling error caused by a slight offset.

3. Since the main shaft 18 is inserted and locked on the lower base 17 from top to bottom, it is necessary to do the opposite action from bottom to top when replacing, which is troublesome, inconvenient and time-consuming in implementation.

4. Since the entire lower base 17 and the main shaft 18 are suspended and connected to the upper base 17 through the connecting rod 19, the load driven by the linear motor 14 to drive the upper base 17 to move up and down is naturally relatively large. , the linear motor 14 is likely to have a shortened service life.

5. Since the pressure foot 20 is only supported by the double-stroke cylinders 21 on the left and right sides, when the lower base 17 reciprocates up and down at high speed, although it can move together and touch the printed circuit board, However, its contact pressure is often not evenly applied around the printed circuit board to be drilled, and the resulting drilled holes are occasionally not completely vertical and inaccurate.

In view of the above, the designer devoted himself to intensive research and combined with the application of theories, specially designed and improved the existing technology, and finally provided the utility model.

Contents of the invention

The main purpose of the utility model is to overcome the defects of the existing main shaft lifting mechanism of the printed circuit board drilling machine, and provide an improved main shaft lifting mechanism of the printed circuit board drilling machine. The technical problem to be solved is to make the Its lifting action is very smooth and stable, and the drill bit can also perform precise drilling action without deviation, which is very suitable for practical use.

Another object of the present utility model is to provide an improved main shaft lifting mechanism of a printed circuit board drilling machine. The technical problem to be solved is to prevent the drill pins installed on the main shaft from shifting due to uneven heat conduction. , which is more suitable for practical use.

Another purpose of this utility model is to provide an improved spindle lifting mechanism of a printed circuit board drilling machine. The technical problem to be solved is to make it achieve the effect of prolonging the service life, so that it is more suitable for practical use.

Another purpose of this utility model is to provide an improved main shaft lifting mechanism of a printed circuit board drilling machine. Suitable for practical use.

Another purpose of this utility model is to provide an improved main shaft lifting mechanism of a printed circuit board drilling machine. , and has industrial utilization value.

The purpose of this utility model and the solution to its technical problems are achieved by adopting the following technical solutions. According to the utility model, an improved main shaft lifting mechanism of a printed circuit board drilling machine includes: a drilling machine reciprocating table, for the following components to be placed; a motor bracket, fixed on the drilling machine reciprocating table; The linear slide rail is fixed on the reciprocating table of the drilling machine; the spring bracket is fixed on the reciprocating table of the drilling machine; the linear motor is installed on the motor bracket and can be driven up and down; the upper base is sliding On the upper linear slide rail, it is driven by a linear motor to move up and down; the elastic element is placed on the spring bracket to provide buffering effect on the upper base; the lower base is located under the upper base; the main shaft is installed on the lower base Seat, the center of the rotation axis is equipped with a drill; connecting rod, connected between the upper and lower base; pressure foot, located under the main shaft; double-stroke cylinder, connected between the upper base and the pressure foot; the lower base The seat is provided with a fixed lower base and a movable lower base; the fixed lower base is fixed on the reciprocating table of the drilling machine and is in the shape of a ㄇ. There is a receiving part in the center, and symmetrical and upper and lower parts are planned on both sides of the receiving part. Corresponding chute; the movable lower base is provided with a sliding seat and a sliding seat cover, and slide rails are provided on both sides of the sliding seat and are just slid at the chute of the fixed lower base. There is an accommodation slot in the center for the main shaft to be placed; the main shaft is assembled in the central accommodation slot of the sliding seat of the movable lower base of the lower base in a corresponding manner from front to back, and is used to fix the position of the sliding seat cover; the upper end of the connecting rod is connected to On the upper base, and the lower end is connected to the movable lower base of the lower base; using the above-mentioned linear motor to drive the upper base up and down to implement the drilling action, the simultaneous action of the double-stroke cylinder can cause the pressure foot to press against the printed circuit. Whether the plate is pressed or not, the connecting rod synchronously drives the movable lower base of the lower base to rise and fall, and causes the main shaft installed on the movable lower base to perform drilling or not.

The purpose of this utility model and the solution to its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned improved main shaft elevating mechanism of the printed circuit board drilling machine, rollers are arranged on the circumferential surface and the lower end of the chute on which the lower base is fixed.

In the aforementioned improved main shaft elevating mechanism of the printed circuit board drilling machine, the rollers arranged in the chute of the fixed lower base allow the slide rails of the sliding seat of the movable lower base to slide.

In the aforementioned improved main shaft lifting mechanism of a printed circuit board drilling machine, the pressure feet are connected to the upper base by three double-stroke cylinders arranged in a triangle.

In the aforementioned improved main shaft lifting mechanism of the printed circuit board drilling machine, the three double-stroke cylinders arranged in a triangular shape on the pressure foot are arranged in an equilateral triangle.

By means of the above technical solution, the main shaft lifting mechanism of the improved printed circuit board drilling machine of the utility model has at least the following advantages and beneficial effects:

The utility model provides an improved main shaft lifting mechanism of a printed circuit board drilling machine, wherein the fixed lower base is fixed on the reciprocating table of the drilling machine, the main shaft is installed in the center of the movable lower base, and the movable lower base The two sides of the center of the base are vertically slid on the fixed lower base and driven by the connecting rod, so the main shaft and the movable lower base slide on the same axis. In the case of the fixed lower base, naturally, etc. The lifting action will be very smooth and stable. In addition, the drill bit installed on the main shaft can also perform precise drilling without deviation.

The main shaft lifting mechanism of the printed circuit board drilling machine improved by the utility model, wherein, the movable lower base installed by the main shaft is slid on the fixed lower base on both sides of the center, and the up and down sliding is generated. The high heat can be evenly diffused and conducted to the surroundings, so that the drill bit installed on the spindle will not be offset due to uneven heat conduction.

The main shaft lifting mechanism of the printed circuit board drilling machine improved by the utility model, wherein, the lower base only uses the movable lower base to drive the linear motor, so the load of the linear motor can be effectively reduced to achieve the effect of prolonging the service life .

The utility model improves the main shaft lifting mechanism of the printed circuit board drilling machine, wherein the main shaft is assembled on the movable lower base of the lower base from the front, and the implementation of the replacement will be more simple, convenient and fast Effect.

The main shaft lifting mechanism of the printed circuit board drilling machine improved by the utility model, in which, the pressure foot is supported by three double-stroke cylinders arranged in a triangle, so that it can apply a more stable and uniform contact pressure to the printed circuit board , so that the holes drilled by the drill pin do have vertical accuracy.

To sum up, the utility model relates to an improved main shaft lifting mechanism of a printed circuit board drilling machine, mainly referring to that the lower base providing the positioning of the main shaft is provided with a fixed lower base and a movable lower base. The lower base is fixed on the reciprocating table of the drilling machine, and the two sides of the center of the movable lower base are slid on the fixed lower base, and the main shaft is installed in the center of the movable lower base; in addition, between the upper base and the pressure foot, It is composed of three double-stroke cylinders arranged in a triangle shape. By means of this, the pressure foot can be supported by a triangular double-stroke cylinder to apply a more stable and even pressure to the printed circuit board to make the formed drilling more accurate; and the main shaft and the movable lower base form a The same axis is slid on the fixed lower base; then the drill bit installed on the spindle will have precise drilling action without deviation. At the same time, the high heat generated by the movable lower base sliding up and down can also be uniform Diffusion and conduction to the surroundings, so that the drill bit does not deviate from uneven heat conduction. The utility model has the above-mentioned many advantages and practical value, it has great improvement no matter in equipment structure or function, has remarkable progress in technology, and has produced easy-to-use and practical effect, and compared with the existing printed circuit The main shaft lifting mechanism of the plate drilling machine has a number of outstanding functions, which is more suitable for practical use.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a prior art printed circuit board drilling machine in which a spindle lifting mechanism is installed on a reciprocating table of the drilling machine.

FIG. 2 is a schematic side view of FIG. 1 .

Fig. 3 is a three-dimensional schematic diagram of an embodiment in which the main shaft lifting mechanism of the printed circuit board drilling machine of the present invention is installed on the reciprocating table of the drilling machine.

FIG. 4 is a schematic side view of FIG. 3 .

Fig. 5 is a three-dimensional schematic view of an embodiment of the lower base and main shaft of the present invention. .

FIG. 6 is a schematic perspective view of the lower base in FIG. 5 .

FIG. 7 is a schematic perspective view of the exploded structure of FIG. 5 .

FIG. 8 is a schematic top view of FIG. 5 .

A: drill needle 2: reciprocating table of drilling machine

10: Motor bracket 11: Upper linear slide rail

12: Spring bracket 13: Lower linear slide rail

14: Linear motor 15: Upper base

16: elastic element 17: lower base

171: Upper rail 172: Lower rail

173: Fix the lower base 1731: Chute

1732: Roller 1733: Cover

1734: Positioning plate 174: Movable lower base

1741: Sliding seat 17411: Slide rail

17412: Accommodating groove 1742: Slider cover

18: Main shaft 181: Ceramic insulation sleeve

19: Connecting rod 20: Pressure foot

21: Double stroke cylinder

Detailed ways

In order to further explain the technical means and effects that the utility model adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the main shaft lifting mechanism of the improved printed circuit board drilling machine proposed according to the utility model will be described below. Specific embodiments, structures, features and effects thereof are described in detail below.

Please refer to Fig. 3 to Fig. 8, the main shaft lifting mechanism of an improved printed circuit board drilling machine of the present invention includes:

The motor bracket 10 is fixed on the reciprocating table 2 of the drilling machine;

The upper linear slide rail 11 is fixed on the reciprocating table 2 of the drilling machine;

The spring bracket 12 is fixed on the reciprocating table 2 of the drilling machine;

The linear motor 14 is installed on the motor bracket 10 and can be driven up and down;

The upper base 15 is slid on the upper linear slide rail 11 and driven by the linear motor 14 to move up and down.

The elastic element 16 is arranged on the spring bracket 12 and can provide a buffering effect on the upper base 15;

Lower base 17, please refer to shown in Figure 5 to Figure 8 for details, is provided with fixed lower base 173 and movable lower base 174; A ㄇ-shaped body, the center is provided with a housing part 1730, on both sides of the housing part 1730, there are symmetrical and upper and lower corresponding sliding grooves 1731, and rollers 1732 are respectively arranged on the peripheral surfaces and lower ends of the sliding grooves 1731, and respectively Fixed positioning by cover plate 1733 and positioning plate 1734; the movable lower base 174 is provided with a sliding seat 1741 and a sliding seat cover 1742, and the two sides of the sliding seat 1741 are provided with a sliding seat on the fixed lower base 173. The sliding rail 17411 of the sliding groove 1731 is provided with a receiving groove 17412 at the central position between the two sliding rails 17411, and the sliding seat cover 1742 is set on one side of the sliding seat 1741; The peripheral surface of the roller 1732 of the side slide groove 1731 is just for sliding contact with the sliding rail 17411 of the sliding seat 1741 of the movable lower base 174, so that the sliding of the movable lower base 174 is more smooth;

The main shaft 18, after the surrounding surface is covered with the ceramic insulating sleeve 181, is assembled in the central receiving groove 17412 of the sliding seat 1741 of the movable lower base 174 in a corresponding manner from front to back, and is fixed on the sliding seat by the sliding seat cover 1742 1741;

Connecting rod 19, one end is installed on the upper base 15, and the other end is installed on the slide rails 17411 on both sides of the movable lower base 174 of the lower base 17, which can move along with the lifting and lowering of the linear motor 14. The lower base 174 and the main shaft 18 are raised and lowered together;

The pressure foot 20 is located under the main shaft 18, and can touch and press the printed circuit board to be drilled;

That is, utilizing the utility model constituted above, since the lower base 17 is provided with a fixed lower base 173 and a movable lower base 174, and the movable lower base 174 is slid on the fixed base 17411 with symmetrical two-side slide rails 17411. The top and bottom of the lower base 173 correspond to the chute 1731, and the fixed lower base 173 is fixed behind the reciprocating table 2 of the drilling machine, and the movable lower base 174 can freely move up and down on it; In addition, since the main shaft 18 is placed in the central receiving groove 17412 of the movable lower base 174, and the movable lower base 174 is connected with the connecting rod 19 fixedly arranged on the upper base 15 and fixedly arranged, when the linear motor 14 drives When the upper base 15 moves up and down, the movable lower base 174 and the main shaft 18 can directly move up and down smoothly and stably along the chute 1731 of the fixed lower base 173 . That is to say, with the sliding rails 17411 on both sides of the movable lower base 174 corresponding to the center of the main shaft 18 placed on the same axis, the moving line of the lifting and lowering displacement of the lower movable base 174 and the main shaft 18 is in the same situation. Naturally, when the linear motor 14 drives the upper base 15 and the connecting rod 19, and causes the lower base 174 to move up and down, the drill (not shown) placed on the rotation axis of the main shaft 18 can be used to implement Steady, smooth and precise drilling action without deflection. Of course, since the slide rail 17411 that provides the movable lower base 174 to slide up and down is on the same axis as the center of the main shaft 18, the high heat generated by the high-speed up and down slide can be uniformly diffused and conducted from the center to the surroundings. Then the position of the drill bit placed at the rotation axis of the main shaft 18 will not cause the deviation phenomenon caused by the uneven heat conduction of the lower base 17, and then the drilling of the printed circuit board will indeed achieve the desired precise effect.

Above-mentioned, because this lower base 17 fixes the lower base 173 on the reciprocating table 2 of the drilling machine, and only uses the lighter movable lower base 174 for the linear motor 14 to drive up and down, then in a long time and Under the operation of high-speed drilling, the load of the linear motor 14 obviously has a substantial lightening effect, and the effect of prolonging the service life can be achieved.

As mentioned above, since the main shaft 18 is assembled in the sliding seat receiving groove 17412 of the movable lower base 174 in a corresponding manner from front to back, and is fixed for the sliding seat cover 1742 instead of being installed in a top-to-bottom threading manner Therefore, in addition to the convenience of assembly, for the implementation of replacement, the operator only needs to directly disassemble the slide cover 1742, which also has the effect of simplicity, convenience and speed.

As mentioned above, since the roller 1732 is installed on the peripheral surface of the chute 1731 of the fixed lower base 173, and the peripheral surface of these rollers 1732 is just for sliding contact with the slide rail 17411 of the sliding seat 1741 of the movable lower base 174, then the The frictional force of the reciprocating sliding of the movable lower base 174 can be effectively reduced, and in the case of more smooth sliding, naturally, the purpose and effect of high-speed drilling expected by the drilling machine can be fully and accurately achieved. The effect of substantive assistance.

Also, because the pressure foot 20 located below the main shaft 18 is supported and connected to the upper base 15 by three double-stroke cylinders 21 arranged in a triangle, it not only has the stability of placement, especially when the linear motor 14 drives When the upper base 15 and the main shaft 18 carry out high-speed reciprocating lifting and lowering drilling operations, they can apply a stable and even pressure to the corresponding printed circuit board through the stable and stable positioning, so that the printed circuit board is touched. The part to be drilled is really flat, so that the hole drilled by the drill pin does have the effect of accuracy without skewing.

As mentioned above, the three double-stroke cylinders 21 are installed on the pressure foot 20 and the upper base 15 in an equilateral triangle, which is the best.

In summary, the utility model is an improved main shaft lifting mechanism of a printed circuit board drilling machine, which obviously has better performance than the prior art. Although its device and structure are not complicated and cumbersome, the overall However, the operation assumption is full of specificity of implementation, and it is an application that has not been seen in the same type of products.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those skilled in the art can use the technical content disclosed above to make some changes or modify them into equivalent embodiments without departing from the technical solution of the present utility model. Content, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (5)

1, a kind of main shaft elevating mechanism of printed circuit board drilling machine of improvement includes:

The drilling machine reciprocating table is settled for following member;

The motor carriage is fixedly arranged on the drilling machine reciprocating table;

Last linear slide rail is fixedly arranged on the drilling machine reciprocating table;

Spring carrier is fixedly arranged on the drilling machine reciprocating table;

Linear motor is installed in the motor carriage, can do upper and lower drive actions;

Top base is slidedly arranged on linear slide rail, is subjected to the upper and lower displacement of linear motor driven;

Flexible member is placed in spring carrier, can provide cushioning effect to top base;

Bottom base is positioned at the top base below;

Main shaft is installed in bottom base, and the axis of rotation at center is equipped with drill point;

Connecting rod is connected between the upper and lower pedestal;

Pressure foot is positioned at the main shaft below;

Double stroke cylinder is connected between top base and the pressure foot;

It is characterized in that:

This bottom base is provided with fixed base and movable bottom base; This fixed base is fixedly arranged on the drilling machine reciprocating table, is a ㄇ body, and central authorities are provided with an accommodation section, and the chute of symmetry and upper and lower correspondence is arranged in the planning of both sides, accommodation section; This activity bottom base is provided with a slide and slide lid, is provided with the chute place that slide rail also just is slidingly installed in fixed base in the slide both sides, and the middle position between two slide rails has a holding tank to settle for main shaft; This main shaft is located at the slide central authorities holding tank of the movable bottom base of bottom base with corresponded manner group from front to back, and sets firmly the location for slide covers; The upper end of this connecting rod is connected in top base, and the lower end is connected in the movable bottom base of bottom base;

When the boring action is implemented in the ascending, descending of linear motor driven top base, this double stroke cylinder that moves simultaneously can cause pressure foot and printed circuit board (PCB) is done whether to press move, the movable bottom base ascending, descending of this connecting rod driven in synchronism bottom base, and make the main shaft that is installed in movable bottom base do boring whether to move.

2, the main shaft elevating mechanism of the printed circuit board drilling machine of improvement according to claim 1 is characterized in that wherein, and the chute side face upper and lower end of the fixed base of this bottom base is mounted with roller respectively.

3, the main shaft elevating mechanism of the printed circuit board drilling machine of improvement according to claim 2 is characterized in that wherein, and this is placed in each roller of the chute of fixed base, supplies the slide rail slippage of the slide of movable bottom base.

4, the main shaft elevating mechanism of the printed circuit board drilling machine of improvement according to claim 1 is characterized in that wherein, and this pressure foot is connected in top base with three double stroke cylinders that are the triangle Boulez.

5, the main shaft elevating mechanism of the printed circuit board drilling machine of improvement according to claim 4 is characterized in that wherein, and this is triangular shape and installs three double stroke cylinders in pressure foot, is the equilateral triangle Boulez.

Images