CN219275981U

CN219275981U - Cooling device of circuit board drilling machine

Info

Publication number: CN219275981U
Application number: CN202223422937.7U
Authority: CN
Inventors: 黄坚东; 刘浩; 佘蓉; 杨朝辉
Original assignee: Shenzhen Hans CNC Technology Co Ltd
Current assignee: Shenzhen Hans CNC Technology Co Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-30
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a cooling device of a circuit board drilling machine, which comprises a frame and a cutter rotatably arranged on the frame, and comprises: an air guiding assembly and an air generating device. The cutter is installed in the frame, and wind-guiding subassembly cover is established outside the cutter and is connected with the frame, is equipped with air inlet and gas outlet on the wind-force generating device and connects on the air inlet, communicates each other between air inlet and the gas outlet, and the wind that produces by wind-force generating device is aimed at the cutter through the gas outlet and is spouted. Through wind generating device and wind-guiding subassembly, at first by wind-force that wind generating device produced, after wind-guiding subassembly's air inlet and gas outlet in proper order, the accurate blowing is on the cutter, and wind-guiding subassembly cover is established outside the cutter simultaneously, does not need the manual work to adjust the gas outlet, and the position and the cutter distance of gas outlet are nearer to make the cooling effect better. Compared with the prior art, the utility model discloses the cooling device of the circuit board drilling machine, which can realize the purpose of rapidly cooling the cutter.

Description

Cooling device of circuit board drilling machine

Technical Field

The utility model relates to the technical field of drilling machines, in particular to a cooling device of a circuit board drilling machine.

Background

In a PCB (circuit board) production process, a drilling process is very important. The mechanical drilling is performed through the rapid rotation of the cutter, and when the drilling is performed, the cutter and the workpiece are rubbed to generate heat, so that the surface temperature of the cutter is increased to reduce the drilling precision, and in order to ensure the drilling precision of the cutter, the cutter and a product are subjected to cooling treatment in time, so that the product precision can be ensured, and the service life of the cutter can be prolonged.

A lot of heat is generated during the drilling of the drill, and the generated heat may cause an excessive error of the drilling and may reduce the life of the tool. In the prior art, the drill bit and the product are often cooled through natural cooling or a mode of externally connecting an air blowing hose, the natural cooling speed of the drill bit and the product is low, the cooling of the hose needs manual control and adjustment, the hose is far away from the product and the drill bit, the hose cannot accurately align the drill bit and the processed product, and the manual control is dangerous and the cooling efficiency is low.

Disclosure of Invention

Based on this, it is necessary to provide a cooling device for a circuit board drill to achieve the purpose of rapidly cooling the tool.

To this end, in one embodiment, there is provided a circuit board drill cooling apparatus including a frame and a cutter rotatably mounted on the frame, comprising: an air guide assembly and an air generating device;

the cutter is installed in the frame, the wind guide assembly is sleeved outside the cutter and is connected with the frame, the wind guide assembly is provided with an air inlet and an air outlet, the wind power generation device is connected to the air inlet, the air inlet and the air outlet are communicated with each other, and wind generated by the wind power generation device is aligned to the cutter through the air outlet and is sprayed out.

As a further alternative scheme of the cooling device of the circuit board drilling machine, the air guide assembly is an air guide block, the air guide block is penetrated along the axial direction of the air guide block to form a first through hole, and the air guide block is sleeved outside the cutter through the first through hole.

As a further alternative of the cooling device for the circuit board drilling machine, a space is formed between the air guide block and the cutter, the air outlet is the space, and air is blown to the cutter through the space.

As a further alternative of the cooling device for the circuit board drilling machine, the direction of the air blown out of the air outlet in the air guide block is determined by the inclination of the inner wall of the air guide block.

As a further alternative scheme of the cooling device of the circuit board drilling machine, a second through hole is formed in the air guide block in a penetrating manner in the radial direction, the second through hole is the air inlet, and the wind power generation device is connected with the second through hole.

As a further alternative of the cooling device for the circuit board drilling machine, the number of the second through holes is multiple, and the second through holes are circumferentially distributed on the air guide block at intervals.

As a further alternative scheme of the cooling device of the circuit board drilling machine, the air guide block is provided with the strip-shaped open groove, the strip-shaped open groove is arranged right opposite to the air inlet, and the wind power generation device is connected with the air inlet through the strip-shaped open groove.

As a further alternative of the cooling device of the circuit board drilling machine, the air guide block is a metal air guide block.

As a further alternative of the cooling device for a circuit board drilling machine according to the utility model, the wind power generation device is connected to the air inlet via a vortex tube.

As a further alternative of the cooling device for the circuit board drilling machine, the wind power generation device is an air compressor.

The implementation of the embodiment of the utility model has the following beneficial effects:

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

fig. 1 shows a schematic structural diagram of a cooling device for a circuit board drilling machine according to an embodiment of the utility model.

Fig. 2 shows an enlarged view of region a of the cooling device of the circuit board drilling machine shown in fig. 1.

Fig. 3 shows a schematic view of the air guide assembly of the cooling device of the circuit board drilling machine shown in fig. 1.

Fig. 4 shows a top view of the air guide assembly shown in fig. 3.

Reference numerals:

10-a frame;

20-cutting tool;

30-of an air guide assembly, 32-of an air inlet, 34-of an air outlet, 36-of an inner wall and 38-of a strip-shaped open slot;

40-vortex tube, 42-trachea.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the members in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In the prior art, a tool rest is provided on a frame 10 of a drilling machine, the tool rest is used for fixing a drill (i.e., a tool body hereinafter), a spindle is provided on the frame 10, the spindle is a rotating shaft on the drilling machine for carrying the drill for rotation, and the tool rest and the fixed drill are simultaneously rotated when the spindle rotates. The tool 20 in the present embodiment includes a tool body and a tool rest for fixing the tool body, wherein the structure and rotation of the frame 10 and the tool 20 are all of the prior art, and the installation and effect of the wind guide assembly 30 and the wind power generation device are not hindered.

In the embodiment of the present utility model, referring to fig. 1 and 4, the present utility model discloses a cooling device applied to a circuit board drilling machine, the circuit board drilling machine comprises a frame 10 and a cutter 20 rotatably mounted on the frame, the cooling device comprises an air guide assembly 30 and a wind power generation device;

the cutter 20 is arranged on the frame 10, the air guide assembly 30 is sleeved outside the cutter 20 and connected with the frame 10, the air guide assembly 30 is provided with an air inlet 32 and an air outlet 34, the wind power generation device is connected to the air inlet 32, the air inlet 32 and the air outlet 34 are communicated with each other, and wind generated by the wind power generation device is sprayed out by aiming at the cutter 20 through the air outlet 34.

Through wind power generation device and wind guide subassembly 30, firstly by wind power generation device's wind-force, after air inlet 32 and gas outlet 34 of wind guide subassembly 30 are passed through in proper order, the accurate blowing is on cutter 20, and wind guide subassembly 30 cover is established outside cutter 20 simultaneously, and is nearer with cutter 20 to make the cooling effect better. Compared with the prior art, the utility model discloses a cooling device of a circuit board drilling machine, which can realize the purpose of rapidly cooling a cutter 20.

In order to solve the problem that the service life of the cutter 20 is low due to overheating of the cutter 20 and products in the drilling process, the application provides a feasible scheme, and the drilling precision is guaranteed. Compared with the original natural cooling, the utility model ensures that the cutter 20 and the product are cooled more rapidly in the drilling process of the drilling machine, reduces the influence of temperature on the drilling precision, can also help the cutter 20 to remove the scraps attached to the cutter body in time, and improves the production efficiency of the product.

Specifically, the air guiding assembly 30 is sleeved outside the cutter 20, wherein the cutter 20 comprises a cutter body and a cutter rest for fixing the cutter body. Preferably, the air guide assembly 30 is sleeved on the tool rest, and the middle area of the air guide assembly 30 is located right below the main shaft on the frame 10, so that a better cooling effect is obtained.

It should be noted that, a wind generating assembly, not shown in the drawings, is connected to the air inlet 32, and the wind generating assembly is used for generating wind for cooling the cutter 20.

Wherein, the air inlet 32 and the air outlet 34 are mutually communicated, and the air outlet 34 is aligned with the direction of the cutter 20, thereby leading to better cooling effect.

In addition, the air guide assembly 30 is connected to the frame 10, and when the tool 20 rotates during machine tool operation, the air guide assembly 30 does not rotate along with the tool 20, and the error in the machining process is not increased due to the addition of the air guide assembly 30.

In one embodiment, referring to fig. 2 to 4, the air guiding assembly 30 is an air guiding block, and the air guiding block is axially penetrated through to form a first through hole, and is sleeved outside the cutter 20 through the first through hole.

The air guiding assembly 30 is an air guiding block, the air outlet 34 and the air inlet 32 are both arranged on the air guiding block, and the mutual communication path between the air outlet 34 and the air inlet 32 can be changed according to the change of the structure of the air guiding block. For example, when the air outlet 34 is provided at the lower end surface of the air guide block, a path of communication between the air outlet 34 and the air inlet 32 may be provided inside the air guide block, and a path of communication is formed inside the air guide block, and the lower end surface refers to an end of the air guide block that is away from the frame 10 when the air guide block is mounted on the frame 10.

In other embodiments, the air guiding assembly 30 may be other air guiding structures such as an air guiding duct.

In one embodiment, a space is formed between the air guide block and the cutter 20, and the air outlet 34 is a space through which air is blown toward the cutter 20.

Specifically, the first through hole is not only used for being sleeved outside the cutter 20, but also forms a space between the air guide block and the cutter 20 to be used as the air outlet 34, and when the first through hole is used as the air outlet 34, a certain space is formed between the air guide block and the cutter 20, so that air can flow out of the space. Because the air guide block and the cutter 20 have a certain interval, the air flowing out from the air outlet 34 can be blown to the periphery of the cutter 20, so that the cooling effect is better and more uniform. Meanwhile, the air flow direction is basically along the axial direction of the cutter 20, but not along the radial direction of the cutter 20, so that more heat can be taken away, and the heat reducing effect is better.

In a specific embodiment, referring to fig. 3, the direction in which the air is blown out of the air outlet 34 of the air guiding block is determined by the slope of the inner wall 36 of the air guiding block.

The direction of the air blown out from the air outlet 34 can be adjusted by the inclination of the inner wall 36 of the air guiding block, and in actual operation, different cutters 20 with different lengths may be required to be selected when different workpieces are operated, so that the inclination of the inner wall 36 can be adjusted according to the lengths of the cutters 20. Preferably, the air guide blocks can be disassembled so that the air guide blocks having different inclinations of the inner wall 36 can be replaced according to different lengths of the cutters 20.

In a specific embodiment, the air guiding block is radially penetrated to form a second through hole, and the second through hole is an air inlet 32, and the wind power generation device is connected with the second through hole.

Specifically, the second through hole is formed in the air guide block, the second through hole penetrates through the first through hole only, the whole air guide block is not penetrated in the radial direction, and the wind power generation device can be connected to the second through hole.

In a specific embodiment, the number of the second through holes is multiple, and each second through hole is circumferentially and alternately distributed on the air guide block.

It should be noted that the number of the second through holes is plural, and the plural second through holes are all connected with the wind power generation device, so as to obtain a better cooling effect.

In a more specific embodiment, referring to fig. 3 and 4, the number of the second through holes is two, and the two second through holes are located at the front end and the side end of the second through hole, respectively.

Further, in order to facilitate the installation of the wind power generation device, the number of the second through holes is two, and the second through holes are respectively positioned at the front end and the side end of the second through holes.

In a specific embodiment, a strip-shaped open groove 38 is provided on the air guiding block, and the strip-shaped open groove 38 is arranged opposite to the air inlet 32, and the wind power generation device is connected with the air inlet 32 through the strip-shaped open groove 38.

The strip-shaped opening groove 38 is used for conveniently clamping the vortex tube connected with the wind generating device.

In a specific embodiment, the air guide block is a metal air guide block.

The air guide block is a metal air guide block, and the metal air guide block has higher strength, so that the service life of the air guide block is longer.

In other embodiments, the air guide block may be made of plastic or the like.

In one embodiment, referring to FIG. 1, the wind generating device is coupled to the air inlet 32 via a vortex tube 40 to provide improved cooling.

In particular, the vortex tube 40 is a device for generating a low temperature air flow from compressed air. The principle is that after compressed air is injected into the vortex chamber of the vortex tube 40, the air flows to the outlet of the hot air end of the vortex tube 40 at a speed of up to one million revolutions per minute, a part of the air flows out through the control valve, and after the rest of the air is blocked, the air flows to the cold air end of the vortex tube 40 at the same rotational speed in the inner ring of the original air flow in a reverse direction. During this process, the two streams undergo heat exchange, the inner ring stream becomes very cold and exits the cold end of the vortex tube 40, and the outer ring stream becomes very hot and exits the hot end of the vortex tube 40. Wherein the cold air end is the end entering the air inlet 32, the hot air end is the upper end of the vortex tube 40 in fig. 1, and the air flow entering end is the lower end of the vortex tube 40 in fig. 1, wherein a wind generating device, not shown in the drawings, is connected to the lower end of the vortex tube 40 shown in fig. 1.

Preferably, the cold end of the vortex tube 40 is connected to the air inlet 32 by an air tube 42.

In addition, the vortex tube 40 is a purely mechanical structure, is reliable in operation, has no moving parts inside, has a service life of more than ten years, and is very suitable for cooling the cutter 20.

In a specific embodiment, the wind generating device is an air compressor.

Preferably, the wind generating device is an air compressor.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A circuit board drill cooling apparatus comprising a frame and a cutter rotatably mounted on the frame, the circuit board drill cooling apparatus comprising: an air guide assembly and an air generating device;

2. The cooling device for the circuit board drilling machine according to claim 1, wherein the air guide assembly is an air guide block, the air guide block is penetrated through along the axial direction of the air guide block to form a first through hole, and the air guide block is sleeved outside the cutter through the first through hole.

3. The cooling device of a circuit board drill according to claim 2, wherein a space is formed between the air guide block and the cutter, the air outlet is the space, and air is blown to the cutter through the space.

4. A cooling device for a circuit board drill according to claim 3, wherein the direction in which the air outlet in the air guide block blows air is determined by the inclination of the inner wall of the air guide block.

5. The cooling device for the circuit board drilling machine according to claim 2, wherein a second through hole is formed in the air guide block in a radial direction, the second through hole is the air inlet, and the wind power generation device is connected with the second through hole.

6. The cooling device of the circuit board drilling machine according to claim 5, wherein the number of the second through holes is plural, and each second through hole is circumferentially and alternately distributed in the air guide block.

7. The cooling device for a circuit board drilling machine according to claim 2, wherein a strip-shaped open groove is provided on the air guide block, and the strip-shaped open groove is arranged right opposite to the air inlet, and the wind power generation device is connected with the air inlet through the strip-shaped open groove.

8. The cooling device of claim 2, wherein the air guide block is a metal air guide block.

9. A circuit board drill cooling device according to any one of claims 1 to 8, wherein the wind generating means is connected to the air inlet by a vortex tube.

10. The circuit board drill cooling device of claim 9 wherein the wind generating means is an air compressor.