TWI573652B - Laser processing of dust collection device - Google Patents

Description

Laser processing dust collecting device

This creation is a dust collecting device for laser processing, especially for dust collecting devices for laser cutting operations.

During the laser cutting operation, a scattering material is generated, wherein the flying object contains debris such as carbon residue and dust, and the flying object affects the cutting operation of the laser cutting head, so when performing laser cutting work, it is necessary to utilize one A dust collecting device is used to remove the scattered matter.

For example, a dust collecting device capable of forming a laser flow in a single direction is connected to an air extracting device, and the dust collecting device includes a casing, a dust collecting chamber is formed in the casing, and a casing is formed on the casing. An upper opening and a lower opening that are opposite to each other and communicate with the dust collecting chamber, and an outer side of the casing form an air suction port that communicates with the dust collecting chamber and the air extracting device.

During a laser cutting operation, the laser cutting head is located above the upper opening of the dust collecting device, and the object to be cut is located below the lower opening of the dust collecting device, and the laser from the laser cutting hair can pass through the laser cutting head The dust collecting device is mounted on the object to be cut, and the air extracting device can extract the gas and the scattered matter in the dust collecting chamber through the air extracting port while cutting, and the air pumping manner in a single direction causes the approaching The scattered matter in the area of the dust collecting chamber at the air suction port is easily extracted from the air extracting port, and the scattered matter in the area away from the dust collecting chamber at the air extracting port is less likely to be extracted from the air extracting port, resulting in extraction The uniformity is not good, so the scattered matter located in the area that is not easily extracted is likely to fly out of the upper opening and contaminate the laser cutting head.

The main purpose of the present invention is to provide a dust collecting device for laser processing, thereby improving the problem that the existing dust collecting device cannot provide uniform extraction of the airflow to remove the scattered matter, and avoiding the scattering material from moving out of the dust collecting device, resulting in the still existing generation. Flying debris affects the problem of laser cutting heads.

In order to achieve the foregoing disclosure, the dust collecting device of the present invention includes: a casing having a dust collecting chamber, an upper air inlet space and a plurality of communication holes, the dust collecting chamber being on the top surface of the casing Forming an upper opening, and forming a lower opening on the bottom surface of the casing, the upper air inlet space is adjacent to and surrounding the upper opening, the communication holes are annularly spaced and located under the upper air intake space and communicate with the upper air inlet space The upper air inlet space is provided with an air inlet and a suction port connected to the dust collecting chamber; a first lower guiding member is disposed at an upper opening of the housing and includes a downward extending to the a first lower guiding wall of the dust collecting chamber; and a second lower guiding member disposed on the casing and including a second lower guiding wall extending downward, the second lower guiding wall is located at the a first flow path is formed between the first lower guide wall and the side wall of the casing, and a first flow path is formed between the second lower guide wall and the first lower guide wall, the first flow path is connected to the dust collection chamber and the a communication hole, a second flow path is formed between the second lower guide wall and the sidewall of the housing, Circulation of the liquid flow passage and the bleed air inlet port.

In the above, a laser cutting head is located above the upper opening of the casing, and the item to be cut is located below the lower opening of the casing, and the dust collecting device can be connected to the air inlet device and the air suction device, and the air inlet device can be used for gas The upper air inlet space of the casing is input, and the first flow channel can be uniformly accessed through the communication hole, and the airflow that is blown downward is formed as the first flow channel is guided, and the airflow blown down can enter The flying object of the dust collecting chamber is blown downward, so that the flying object does not move upwards out of the upper opening, thereby preventing the laser cutting head from being contaminated by debris, and the air inlet device can pass the gas through the air inlet of the casing Blowing into the casing, and the air extracting device can extract the gas through the air suction port of the casing, so that the second flow path between the air inlet and the air suction port forms a vortex airflow, which can be the first flow channel The flying material that is driven downward is further taken up from the bottom to the second through the second flow path, and the second guiding wall can effectively separate the first flow path and the second flow path as a barrier, so that the spiral belt from the bottom to the top The debris will not run to the first flow path, the effect of removing the scattered objects Laser cutting head to avoid being contaminated scattering object was, in turn, can improve the cutting quality, and configuring the first flow path and second flow path, so that gas flow can be uniformly diffused and scattered was removed.

Referring to FIG. 1 to FIG. 3 , a preferred embodiment of the dust collecting device for laser processing includes a housing 10 , a first lower guiding member 20 and a second lower guiding member 30 .

A dust collecting chamber 11 , an upper air inlet space 111 and a plurality of communication holes 112 are formed in the housing 10 , and the dust collecting chamber 11 forms an upper opening 113 on the top surface of the housing 10 , and the housing 10 The bottom surface defines a lower opening 114. The upper air inlet space 111 is adjacent to and surrounds the upper opening 113. The communication holes 112 are annularly spaced and located below the upper air intake space 111 and communicate with the upper air inlet space 111. An air inlet 115 and a suction port 116 are connected to the dust collecting chamber 11 , and the air inlet 115 is adjacent to the lower opening 114 . The air inlet 116 is adjacent to the upper opening 113 , and the housing 10 is adjacent to the housing 10 . The inner side surface of the lower opening 114 forms a vortex guiding portion 12.

The first lower guiding member 20 is disposed at the upper opening 113 of the casing 10 and includes a first lower guiding wall 21 extending downward to the dust collecting chamber 11.

The second lower guiding member 30 is disposed on the housing 10 and includes a second lower guiding wall 31 extending downward. As shown in FIG. 4 to FIG. 6 , the second lower guiding wall 31 is located at the first lower portion. A first flow path 40 is formed between the guide wall 21 and the side wall of the casing 10, and the second lower guide wall 31 and the first lower guide wall 21 communicate with the dust collection chamber. A second flow path 50 is formed between the second lower guide wall 31 and the side wall of the housing 10, and the second flow path 50 flows through the air inlet 115 and the air suction port 116. .

As shown in FIG. 2 and FIG. 3 , the housing 10 includes a base 13 , a cover 14 , a top seat 15 , and a current sharing assembly 16 . The cover 14 is fastened to the base 13 . The top 30 is locked to the base 13 and is located above the second lower guiding member 30. The equalizing assembly 16 is locked to the top seat 15 and located at the top. Between the seat 15 and the second lower guide member 30, the upper opening 113 is formed on the top surface of the top seat 15, and the first lower guide member 20 is locked to the top seat 15, and The dust collecting device uniformly sets a plurality of lower air inlet joints 70 on the top seat 15, and the upper air inlet space 111 is formed between the top seat 15 and the current sharing assembly 16, and is as shown in FIG. 2 and FIG. The plurality of communication holes 112 are annularly spaced apart from each other. The bottom surface of the current distribution assembly 16 defines a first tapered surface 161, and the top surface of the second lower guide member 30 forms a first surface. a second tapered surface 32 facing the first tapered surface 161 facing and spaced apart, and a lower intake space 60 formed between the first tapered surface 161 and the second tapered surface 32, the lower intake air Space 60 is connected to the 40,112 flow channel and the plurality of communication holes.

As shown in FIG. 5 and FIG. 6 , the lower opening 114 is formed on the bottom surface of the base 13 , the vortex guiding portion 12 is located on the base 13 , and the air inlet 115 is formed on the base 13 , and the dust collection is provided. The device is provided with a vortex inlet joint 80 at the inlet 115 of the base 13. The inner peripheral surface of the cover 14 is a tapered vortex guiding surface 141, and the vortex guiding surface 141 is adjacent to the second flow passage 50. .

As shown in FIG. 5, the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the casing 10 is greater than the distance from the bottom edge of the second lower guiding wall 31 to the bottom surface of the casing 10; As shown in FIG. 9, the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the casing 10 is equal to the distance from the bottom edge of the second lower guiding wall 31 to the bottom surface of the casing 10; 10, the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the casing 10 is smaller than the distance from the bottom edge of the second lower guiding wall 31 to the bottom surface of the casing 10, wherein the first The length of the lower guiding wall 21 and the length of the second lower guiding wall 31 can be matched to each other to achieve different effects. Referring to FIG. 5, FIG. 9, and FIG. 10, the first lower guiding wall 21 is disclosed. The length of the second lower guiding wall 31 is short, medium and long respectively, and the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the housing 10 is greater than the second length. The arrangement of the distance from the bottom edge of the lower guide wall 31 to the bottom surface of the casing 10 is optimal.

In addition, as shown in FIG. 5 and FIG. 11 , the air suction port 116 is formed on the outer side wall of the cover 14 and communicates with the second flow path 50 . The height of the air suction port 116 can be adjusted according to requirements, as shown in FIG. 5 . As shown, the air suction port 116 is adjacent to the upper edge of the cover 14, and as shown in FIG. 11, the air suction port 116 is adjacent to the lower edge of the cover, wherein the ratio of the diameter of the air suction port 116 to the height of the cover 14 is shown. Less than 1/3, that is, when the ratio of the diameter of the suction port 116 is 1, the ratio of the height of the cover 14 is greater than 3.

In the above, in the laser cutting operation, a laser cutting head is located above the upper opening 113 of the casing 10 of the dust collecting device, and the article to be cut is located below the lower opening 114 of the casing 10 of the dust collecting device. The laser from the laser cutting hair can be hit on the object to be cut through the dust collecting chamber 11 of the dust collecting device, and the dust collecting device can be connected to the two air intake device and one air extracting device, one of which The intake device communicates with the lower intake joints 70, and the other intake device communicates with the vortex intake joints 80, and the suction devices communicate with the suction ports 116 of the housing 10.

As shown in FIG. 7, the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the casing 10 is greater than the distance from the bottom edge of the second lower guiding wall 31 to the bottom surface of the casing 10. For example, the air intake device can input gas into the upper air intake space 111 of the housing 10, and the gas further passes through the communication holes 112 spaced apart from the current sharing assembly 16, wherein the current sharing assembly 16 is inside the housing 10. The upper air intake space 111 and the lower air intake space 60 are separated, and the gas first enters the upper air intake space 111 by the lower air intake joints 70, fills the upper air intake space 111, and passes through the annular space. The aligned communication holes 112 enter the lower air intake space 60, so that the gas can be uniformly blown into the first flow path 40, and the airflow that is blown downward is formed along with the guidance of the first flow path 40, and the airflow is blown downward. The scattered matter entering the dust collecting chamber 11 can be blown downward.

In addition, the current sharing component 16 can include at least one current sharing plate, and each of the current sharing plates is provided with the communication hole 112. Taking two current sharing plates as an example, the two current sharing plates can be divided into a first a first flow equalization plate and a second current equalization plate are stacked on the top seat 15 and located at the top seat 15 and the second lower guide 30 The second flow equalization plate is located below the first flow equalization plate, and a current sharing air chamber is formed between the first current sharing plate and the second current sharing plate, and the current sharing air chamber is further annular. And the equalizing air chamber communicates with the upper air inlet space 111 through the communication hole 112 of the first current equalizing plate, and the current sharing air chamber communicates with the lower air inlet space 60 through the communication hole 112 of the second current sharing plate. Therefore, after filling the upper air inlet space 111, the gas enters the current sharing air chamber through the communication hole 112 of the first current equalizing plate, and the gas fills the current sharing air chamber and passes through the communication hole 112 of the second current sharing plate to enter the a lower intake space 60, wherein an appropriate number of flow equalization plates can be set according to requirements to form an appropriate number of flow equalization chambers, thereby achieving an appropriate average Effect, further, the average flow plate further is a hollow annular member.

Referring to FIG. 8 again, another air intake device can input gas to the casing 10 through the air inlet 115, and the air extracting device can extract the gas through the air extracting port 116 and cooperate with the eddy current. The guiding portion 12, the second flow passage 50 between the intake port 115 and the suction port 116 forms a swirling airflow moving downward from the bottom, so that the airflow blown down by the first flow passage 40 is carried downward. The flying object can be taken up by the vortex flow from the bottom to the top through the second flow path 50, and the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the casing 10 is greater than the second lower portion. The distance from the bottom edge of the guide wall 31 to the bottom surface of the casing 10, so that the scattered matter entering the second flow passage 50 is blocked by the second lower guide wall 31, and does not move out during the upward movement. The upper opening 113 of the housing 10 is such that the flying objects do not contaminate the laser cutting head.

Wherein, the ratio of the diameter of the suction port 116 to the height of the cover 14 is less than 1/3, so that the generated vortex flow can flow more than two times in the second flow path 50 to facilitate the elimination of the scattered matter, if the pumping The smaller the ratio of the diameter of the port 116 to the height of the cover 14, that is, the higher the height of the cover 14 or the smaller the diameter of the suction port 116, the ability of the vortex flow to remove the scattered matter can be increased, and the suction port 116 is further provided. The closer the setting height is to the upper edge of the cover 14, the higher the ability of the vortex to remove the scattered matter.

In summary, the first flow path 40 is formed between the first lower guiding member 20 and the second lower guiding member 30 of the dust collecting device of the laser processing, and the airflow that is blown downward can be formed, and the scattered matter is moved toward Blowing down, and then vortexing the airflow to blow the scattering material into the second flow channel 50, so that the scattered matter of the vortex flow upward does not flow out from the upper opening 113, so the scattered matter will not be contaminated by the laser The cutting head, so the structure of the dust collecting device of the laser processing can form the airflow of the blown air and the vortex, to achieve the effect of removing the scattered matter, avoiding the laser cutting head being contaminated by the flying object and improving the cutting quality. .

Wherein, the current sharing component 16 provides spaced-apart communication holes 112, which can provide a uniform downward blowing airflow, and can cooperate with the vortex airflow formed in the second flow channel to uniformly remove the scattered matter in the dust collecting chamber 11 Avoid the unevenness and the flying objects fly out of the upper opening 113, thereby preventing the laser cutting head from being contaminated by the flying objects.

In addition, the dust collecting device of the laser processing may further adopt that “the distance from the bottom edge of the first lower guiding wall 21 to the bottom surface of the housing 10 is greater than the bottom edge of the second lower guiding wall 31 to the housing. The distance of the bottom surface of the 10 is configured such that the second lower guide wall 31 can be effectively separated, so that the scattered matter of the vortex flow upward does not flow out from the upper opening 113, thereby assisting in avoiding the laser cutting head being The effect of flying debris.

10‧‧‧shell
11‧‧‧dust room
111‧‧‧Upper air intake space
112‧‧‧Connected holes
113‧‧‧Opening
114‧‧‧ opening
115‧‧‧air inlet
116‧‧‧Exhaust port
12‧‧‧ eddy current guide
13‧‧‧Base
14‧‧‧ hood
141‧‧ eddy current guiding surface
15‧‧‧ top seat
16‧‧‧current sharing components
161‧‧‧First cone
20‧‧‧First lower guide
21‧‧‧First lower guide wall
30‧‧‧Second lower guide
31‧‧‧Second lower guide wall
32‧‧‧Second cone
40‧‧‧First runner
50‧‧‧Second runner
60‧‧‧ lower air intake space
70‧‧‧ lower intake joint
80‧‧‧Vortex inlet fittings

Figure 1 is a perspective view of a preferred embodiment of a dust collecting device for laser processing. FIG. 2 is a perspective exploded view of a preferred embodiment of the dust collecting device for laser processing. FIG. 3 is another perspective exploded view of a preferred embodiment of the dust collecting device for laser processing. Fig. 4 is a top plan view showing a preferred embodiment of the dust collecting device for laser processing. Fig. 5 is a schematic cross-sectional view showing the A-A cut line of Fig. 4. Fig. 6 is a schematic cross-sectional view showing the B-B cut line of Fig. 4. Fig. 7 is a schematic view showing the flow of the lower blow formed by the first flow path of a preferred embodiment of the dust collecting device for laser processing. Fig. 8 is a schematic view showing the flow of the vortex formed by the second flow path of a preferred embodiment of the dust collecting device for laser processing. Figure 9 is a cross-sectional view showing another preferred embodiment of the dust collecting device for laser processing. Figure 10 is a cross-sectional view showing still another preferred embodiment of the dust collecting device for laser processing. Figure 11 is a cross-sectional view showing still another preferred embodiment of the dust collecting device for laser processing.

10‧‧‧shell

116‧‧‧Exhaust port

13‧‧‧Base

14‧‧‧ hood

15‧‧‧ top seat

20‧‧‧First lower guide

21‧‧‧First lower guide wall

70‧‧‧ lower intake joint

80‧‧‧Vortex inlet fittings

Claims (8)

A dust collecting device for laser processing, comprising: a casing, wherein a dust collecting chamber, an upper air inlet space and a plurality of communication holes are formed therein, the dust collecting chamber forming an upper opening on a top surface of the casing, And forming a lower opening on the bottom surface of the casing, the upper air inlet space is adjacent to and surrounding the upper opening, and the communication holes are annularly spaced and located below the upper air intake space and communicate with the upper air inlet space. An air inlet and a suction port connected to the dust collecting chamber are disposed outside the casing, wherein the casing comprises a base, a cover, a top seat and a current sharing component, and the cover is attached to the base, the top seat Locking is disposed on the cover and the base and above the second lower guiding member, the current sharing component is locked to the top seat and located between the top seat and the second lower guiding member; a lower guiding member disposed at an upper opening of the housing and including a first lower guiding wall extending downward to the dust collecting chamber; and a second lower guiding member locked to the second lower guiding member The cover of the housing further includes a second lower guiding wall extending downward, the second lower guiding wall is located at the first a first flow path is formed between the guide wall and the side wall of the casing, and the first lower guide wall and the first lower guide wall are connected to the dust collection chamber and the communication holes. A second flow path is formed between the second lower guiding wall and the side wall of the casing, and the second flow path flows through the air inlet and the air suction port. The dust collecting device of the laser processing according to claim 1, wherein the lower opening is formed on a bottom surface of the base, the eddy current guiding portion is located at the base, and the air inlet is formed on the base, and the The dust collecting device of the laser processing is provided with a vortex inlet joint at the inlet of the base, the exhaust port is formed on the outer side wall of the cover, and the casing forms an eddy current guide on the inner side adjacent to the lower opening. a guiding portion, the upper opening is formed on a top surface of the top seat, and the first lower guiding member is locked on the top seat, and the laser processing dust collecting device is disposed on the top seat The air inlet is formed between the top seat and the current sharing component, and the communication holes are annularly spaced apart from the current sharing component. The dust collecting device for laser processing according to claim 2, wherein a ratio of a diameter of the air suction port to a height of the cover is less than 1/3. The dust collecting device of the laser processing according to any one of claims 1 to 3, wherein a distance from a bottom edge of the first lower guiding wall to a bottom surface of the casing is greater than a width of the second lower guiding wall The distance from the bottom edge to the bottom surface of the housing. The dust collecting device of the laser processing according to any one of claims 1 to 3, wherein a bottom surface of the current sharing assembly forms a first tapered surface, and a top surface of the second lower guiding member forms a second surface a tapered surface, the second tapered surface faces and spaced corresponding to the first tapered surface, and a lower intake space is formed between the first tapered surface and the second tapered surface, the lower air inlet space is connected to the first flow path Connect with these holes. The dust collecting device of the laser processing according to claim 4, wherein a bottom surface of the current sharing component forms a first tapered surface, and a top surface of the second lower guiding component forms a second tapered surface, the second The tapered surface faces and spaced correspondingly to the first tapered surface, and a lower intake space is formed between the first tapered surface and the second tapered surface, the lower air inlet space is connected to the first flow channel and the communication holes. The dust collecting device of the laser processing according to any one of claims 1 to 3, wherein the inner peripheral surface of the cover is a tapered vortex guiding surface, the eddy current guiding surface adjoins the second flow path . The dust collecting device for laser processing according to claim 6, wherein the inner peripheral surface of the cover is a tapered vortex guiding surface, and the eddy guiding surface abuts the second flow path.