Dust removal device and laser cutting equipment

Abstract

The utility model discloses a dust removal device and laser cutting equipment. The dust removal device is used to absorb dust generated when a laser assembly cuts a pole piece strip, and includes: a dust removal inner cover and a dust removal outer cover. The dust removal outer cover is provided with an external dust removal port and a receiving cavity connected with the external dust removal port. The pole piece strip can be movably arranged in the receiving cavity. The dust removal inner cover is arranged in the dust removal outer cover. The dust removal inner cover is provided with an internal dust removal port. The internal dust removal port is arranged corresponding to the cutting area of ​​the pole piece strip, and the external dust removal port is arranged corresponding to the outside of the cutting area of ​​the pole piece strip. The utility model can make the wind speed of the dust removal mainstream in the cutting area of ​​the pole piece strip less than 10m / s by arranging the dust removal inner cover and the dust removal outer cover, so as to avoid that the strong wind speed will further aggravate the shaking of the pole piece and cause the laser to be defocused, and can also make the wind speed of the dust removal mainstream outside the cutting area of ​​the pole piece strip greater than 10m / s, so as to effectively remove dust, thereby meeting the demand of high-speed laser slicing.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting equipment, in particular to a dust removal device and laser cutting equipment. Background Art

[0002] In the manufacturing process of new energy vehicle power batteries, laser slicing technology is widely used due to its high precision and high efficiency. However, a large amount of dust is generated during the laser slicing process, which not only affects the working environment, but may also have an adverse effect on equipment performance and product quality.

[0003] like Figure 1 and Figure 2 As shown in the figure, the traditional laser slicing dust removal scheme mainly achieves dust removal by designing the dust extraction pipe flow, cutting chamber and dust removal structure. These schemes need to form a dust removal mainstream within a vertical distance of 30mm from the pole piece surface in the cutting area during conventional speed laser slicing, and the wind speed of the dust removal mainstream needs to be greater than 15m / s, so as to effectively remove the dust generated by laser cutting.

[0004] However, in the high-speed laser slicing process, these traditional dust removal solutions face huge challenges due to the increased vibration of the pole piece. On the one hand, if the wind speed of the dust removal mainstream is greater than 10m / s, the strong wind speed will further aggravate the vibration of the pole piece, causing the laser to defocus and unable to cut normally. On the other hand, if the wind speed of the dust removal mainstream is less than 10m / s, the conventional dust removal structure cannot meet the requirements of dust removal, and dust will accumulate in the cutting chamber, thus affecting the cutting quality and equipment performance. Utility Model Content

[0005] The utility model aims to provide a dust removal device and a laser cutting device, aiming to solve the problem that the existing laser slicing dust removal scheme cannot meet the needs of high-speed laser slicing.

[0006] An embodiment of the utility model provides a dust removal device for removing dust generated when a laser component cuts a pole piece strip, comprising: an inner dust removal cover and an outer dust removal cover, the outer dust removal cover is provided with an external dust removal port and a accommodating cavity connected to the external dust removal port, the pole piece strip is movably arranged in the accommodating cavity, the inner dust removal cover is arranged in the outer dust removal cover, the inner dust removal cover is provided with an inner dust removal port, the inner dust removal port is arranged corresponding to the cutting area of ​​the pole piece strip, and the outer dust removal port is arranged outside the cutting area of ​​the pole piece strip.

[0007] Furthermore, the dust removal outer cover comprises: a cutting section and a transition section, the cutting section and the transition section are connected, and the external dust removal port, the accommodating chamber and the dust removal inner cover are arranged in the cutting section.

[0008] Furthermore, the cutting section has a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface and the second side surface are arranged opposite to each other, and the third side surface and the fourth side surface are arranged opposite to each other.

[0009] Furthermore, a first slit and a second slit are respectively provided on the first side surface and the second side surface, and the pole piece strip passes through the first slit, the accommodating cavity and the second slit in sequence.

[0010] Furthermore, a smoothing piece is provided on the first side surface, and the pole piece strip passes through the smoothing piece, the first slit, the accommodating cavity and the second slit in sequence.

[0011] Furthermore, the third side surface and the fourth side surface are provided with laser cutting openings for the laser emitted by the laser assembly to pass through, and the fourth side surface is provided with a laser shielding plate, and the laser shielding plate is arranged corresponding to the laser cutting openings.

[0012] Furthermore, at least one adsorption block is disposed on the first side surface.

[0013] Furthermore, the first side surface, the second side surface, the third side surface and the fourth side surface are sequentially connected to form a cone.

[0014] Furthermore, there are multiple external dust removal ports, and the multiple external dust removal ports are arranged around the internal dust removal port.

[0015] An embodiment of the utility model also provides a laser cutting device, comprising: a fixed seat, a laser component, an upper roller for supporting the movement of the pole piece material strip, a lower roller for driving the movement of the pole piece material strip and the above-mentioned dust removal device, the laser component is arranged on the side of the fixed seat and corresponding to the pole piece material strip, the upper roller, the dust removal device and the lower roller are all arranged on the fixed seat, and the dust removal device is arranged between the upper roller and the lower roller.

[0016] The utility model discloses a dust removal device and a laser cutting device. The dust removal device is used to absorb dust generated when a laser assembly cuts a pole piece strip, and includes: a dust removal inner cover and a dust removal outer cover. The dust removal outer cover is provided with an external dust removal port and a receiving cavity connected with the external dust removal port. The pole piece strip can be movably arranged in the receiving cavity. The dust removal inner cover is arranged in the dust removal outer cover. The dust removal inner cover is provided with an internal dust removal port. The internal dust removal port is arranged corresponding to the cutting area of ​​the pole piece strip, and the external dust removal port is arranged outside the cutting area of ​​the pole piece strip. The utility model can form different wind speeds in different areas of the pole piece strip by arranging the dust removal inner cover and the dust removal outer cover, that is, the wind speed of the dust removal mainstream in the cutting area of ​​the pole piece strip can be less than 10m / s, so as to avoid that the strong wind speed will further aggravate the shaking of the pole piece and cause the laser to defocus. The wind speed of the dust removal mainstream outside the cutting area of ​​the pole piece strip can be greater than 10m / s, so as to effectively remove dust, thereby meeting the needs of high-speed laser slicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an existing laser cutting device;

[0019] Figure 2 It is a structural schematic diagram of an existing dust removal hood;

[0020] Figure 3 is a schematic structural diagram of the laser cutting device of this embodiment;

[0021] Figure 4 An exploded view of the dust removal device with multiple external dust removal ports of this embodiment from a first perspective;

[0022] Figure 5 is a schematic structural diagram of the dust removal device of this embodiment from a first perspective;

[0023] Figure 6 is a structural schematic diagram of the dust removal device of this embodiment from a second viewing angle;

[0024] Figure 7 An exploded view of the dust removal device with multiple external dust removal ports of this embodiment from a second perspective;

[0025] Description of the markings in the figure:

[0026] 1. Laser assembly; 2. Pole sheet strip; 3. Dust removal inner cover; 4. Dust removal outer cover; 5. External dust removal port; 6. Accommodating chamber; 7. Internal dust removal port; 8. Cutting section; 9. Transfer section; 10. First side; 11. Second side; 12. Third side; 13. Fourth side; 14. First slit; 15. Second slit; 16. Smoothing piece; 17. Roller; 18. Roller fixing seat; 19. Laser cutting port; 20. Laser shielding plate; 21. Adsorption block; 22. Cover port; 23. Transfer tube section; 24. Fixing seat; 25. Upper roller; 26. Lower roller. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0029] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0030] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] See also Figure 3 and Figure 4 The present embodiment discloses a dust removal device for removing dust generated when the laser assembly 1 cuts the pole piece strip 2, comprising: an inner dust removal cover 3 and an outer dust removal cover 4, the outer dust removal cover 4 is provided with an external dust removal port 5 and a receiving cavity 6 connected with the external dust removal port 5, the pole piece strip 2 is movably arranged in the receiving cavity 6, the inner dust removal cover 3 is arranged in the outer dust removal cover 4, the inner dust removal cover 3 is provided with an internal dust removal port 7, the internal dust removal port 7 is arranged corresponding to the cutting area of ​​the pole piece strip 2, and the external dust removal port 5 is arranged outside the cutting area of ​​the pole piece strip 2.

[0032] This embodiment provides an inner dust removal cover 3 and an outer dust removal cover 4, which can form different wind speeds in different areas of the pole piece strip 2. That is, the wind speed of the dust removal mainstream in the cutting area of ​​the pole piece strip 2 can be less than 10m / s, so as to avoid that the strong wind speed will further aggravate the shaking of the pole piece and cause the laser defocusing. The wind speed of the dust removal mainstream outside the cutting area of ​​the pole piece strip 2 can be greater than 10m / s, so as to effectively remove dust, thereby meeting the needs of high-speed laser slicing.

[0033] In this embodiment, please refer to Figure 4 The dust removal outer cover 4 includes: a cutting section 8 and a transition section 9, the cutting section 8 and the transition section 9 are connected, and the outer dust removal port 5, the accommodating chamber 6 and the dust removal inner cover 3 are arranged in the cutting section 8.

[0034] The cutting section 8 and the transition section 9 can be integrated or separated. When the cutting section 8 and the transition section 9 are integrated, the entire dust removal cover 4 has a compact structure and high stability. At the same time, the integrated design further improves the sealing performance of the dust removal cover 4, effectively preventing dust leakage.

[0035] When the cutting section 8 and the transfer section 9 are separated, the cutting section 8 can be easily repaired and replaced separately. In the actual production process, the cutting section 8 is often the part that is most susceptible to wear and damage, so the separation design can greatly reduce the maintenance cost. In addition, the separation design also enables the dust removal cover 4 to adapt to laser die-cutting equipment of different specifications, thereby improving the versatility of the equipment.

[0036] In this embodiment, please refer to Figure 5 The cutting section 8 has a first side surface 10, a second side surface 11, a third side surface 12 and a fourth side surface 13. The first side surface 10 and the second side surface 11 are arranged opposite to each other, and the third side surface 12 and the fourth side surface 13 are arranged opposite to each other.

[0037] The four sides support each other to form a stable frame, thereby enhancing the overall structural stability of the dust removal cover 4; at the same time, the four sides enable the cutting section 8 to form a space with a certain sealing effect, thereby effectively preventing dust leakage, thereby improving the dust removal ability.

[0038] In this embodiment, a first slit 14 and a second slit 15 are respectively provided on the first side surface 10 and the second side surface 11 , and the pole piece strip 2 passes through the first slit 14 , the accommodating cavity 6 , and the second slit 15 in sequence.

[0039] On the one hand, the first slit 14 and the second slit 15 provide a channel for the transmission of the pole piece strip 2, ensuring that the pole piece strip 2 can stably and continuously pass through the cutting section 8. This design reduces the jitter and deviation of the pole piece strip 2 during the transmission process, thereby ensuring the accuracy and stability of laser cutting; on the other hand, the first slit 14 and the second slit 15 can also prevent dust from escaping from the accommodating chamber 6, ensuring the sealing of the dust removal cover 4.

[0040] Furthermore, a smoothing piece 16 is provided on the first side surface 10 , and the pole piece strip 2 passes through the smoothing piece 16 , the first slit 14 , the accommodating cavity 6 and the second slit 15 in sequence.

[0041] For details, please refer to Figure 6 The smoothing member 16 includes: two rollers 17 and a roller fixing seat 18 , the two rollers 17 are mounted on the roller fixing seat 18 , the roller fixing seat 18 is mounted on the first side surface 10 , and the pole piece strip 2 is arranged between the two rollers 17 .

[0042] The function of the smoothing member 16 is to pre-treat the pole piece strip 2 to eliminate wrinkles or uneven parts that may exist on its surface. When the pole piece strip 2 passes through the smoothing member 16, its surface is smoothed, thereby ensuring the accuracy and consistency of subsequent laser cutting. Secondly, the pole piece strip 2 treated by the smoothing member 16 is more stable during the transmission process, reducing the cutting error caused by jitter or offset, and this stability improves the cutting accuracy.

[0043] In this embodiment, the third side surface 12 and the fourth side surface 13 are provided with laser cutting openings 19 (such as Figure 5 A laser shielding plate 20 is provided on the fourth side 13 (as shown in FIG. Figure 5 As shown), the laser shielding plate 20 is arranged corresponding to the laser cutting opening 19.

[0044] The laser cutting opening 19 on the third side 12 is mainly set to prevent the third side 12 from blocking the light path and affecting the cutting, while the laser cutting opening 19 on the fourth side 13 is mainly set to prevent the laser from ablating the fourth side 13. When the laser assembly 1 cuts off the pole piece strip 2, part of the energy will be directly emitted, which may burn the machine, and the laser shielding plate 20 is mainly used to absorb the laser after cutting off the pole piece strip 2 and absorb the laser energy to prevent the machine from burning.

[0045] In this embodiment, in order to improve the stability of the electrode strip 2, at least one adsorption block 21 (such as Figure 5 As shown); the adsorption block 21 can effectively fix and adsorb the pole piece strip 2, thereby greatly enhancing its stability. The adsorption block 21 can also remove a small amount of dust.

[0046] Furthermore, adsorption blocks 21 are respectively provided on both sides of the pole piece strip 2, and adsorption blocks 21 are respectively provided on both sides of the pole piece strip 2, which can effectively fix and adsorb the pole piece strip 2. This double-sided adsorption method makes the pole piece strip 2 more stable during the transmission and cutting process, reduces the displacement or shaking caused by vibration or external force, and thus ensures the accuracy and stability of cutting.

[0047] In this embodiment, the first side 10, the second side 11, the third side 12 and the fourth side 13 are connected in sequence to form a cone; specifically, the first side 10, the second side 11, the third side 12 and the fourth side 13 can form a cone or a pyramid, and the conical setting can narrow the air inlet of the cutting section 8, thereby reducing the possibility of dust escaping from the air inlet.

[0048] In this embodiment, the cross-sectional area of ​​the transition section 9 gradually decreases in the direction away from the cutting section 8. The gradually decreasing cross-sectional area can gradually accelerate the airflow, so that the airflow forms a more uniform and stable flow state in the transition section 9, thereby improving the airflow's ability to carry dust and exhaust gas, and helping to better achieve a dust removal effect.

[0049] In this embodiment, please refer to Figure 7 There are multiple external dust removal ports 5, and the multiple external dust removal ports 5 are arranged around the internal dust removal port 7; wherein the multiple external dust removal ports 5 can adopt the same wind speed or different wind speeds; the arrangement of multiple external dust removal ports 5 enables the dust removal device to adapt to different dust removal environments and scenes, greatly improving the applicability of the device, and at the same time, the dust removal ports are arranged around the internal dust removal port 7, so that the airflow can form a more uniform and stable distribution inside the dust removal cover 4. This uniform airflow distribution helps to reduce airflow dead angles and ensure that dust and exhaust gas can be effectively brought to the external dust removal port 5 and discharged.

[0050] Furthermore, in order to set different wind speeds for different external dust removal ports 5 , a plurality of transition sections 9 are provided in this embodiment, and the plurality of transition sections 9 are respectively connected to one external dust removal port 5 .

[0051] In some embodiments, multiple external dust removal ports 5 are provided, and the closer the external dust removal port 5 is to the pole piece material strip 2, the smaller the wind speed. By reducing the wind speed of the external dust removal port 5 that is closer to the pole piece material strip 2, the interference to the pole piece material strip 2 can be minimized and its quality and stability can be protected; by increasing the wind speed of the external dust removal port 5 that is farther away from the pole piece material strip 2, the dust can be effectively discharged and the efficiency of the entire dust removal system can be improved.

[0052] In this embodiment, please refer to Figure 7The dust removal inner cover 3 includes: a cover opening 22 and a transfer pipe section 23, the cover opening 22 and the transfer pipe section 23 are connected, and the cover opening 22 serves as an entrance for the airflow to enter the dust removal inner cover 3. Its design can effectively guide the airflow to enter the transfer pipe section 23. The transfer pipe section 23 further guides the airflow. This design makes the airflow in the dust removal inner cover 3 flow more smoothly, thereby improving the dust removal efficiency.

[0053] Among them, the working principle of the dust removal device is: by adjusting the dust extraction flow rate of the dust removal inner cover 3, a low wind speed field is formed at the cover port 22 of the dust removal inner cover 3. The mainstream wind speed of the low wind field is v1. Affected by the diffusion of the dust itself and the wind field, the mainstream dust flows to the dust removal outer cover 4 area. At this time, the wind pressure of the low wind speed field is low, which has little effect on the pole piece shaking, and meets the pole piece shaking qualification. The low wind speed field has a certain carrying effect on the dust, and can carry a small amount of dust into the dust removal inner cover 3 to remove part of the dust. At the same time, the low wind speed field can also guide the mainstream of the unremoved dust to the dust removal outer cover 4 area. The cutting section 8 has multiple external dust removal ports 5, and each external dust removal port 5 has an independent transfer section 9 to achieve separate adjustment of the wind speed of each external dust removal port 5. Taking one of the external dust removal ports 5 as an example, the dust extraction flow rate is adjusted by the transfer section 9, and the corresponding mainstream wind speed v2 is formed at the external dust removal port 5. This mainstream wind speed v2 is relatively high, and can carry most of the dust to the dust removal cover 4, thereby achieving the purpose of removing dust. The mainstream wind speed v2 is far away from the cutting area, and has little effect on the vibration of the pole piece cutting area, meeting the cutting vibration qualification.

[0054] In addition, the hood opening 22 can have various forms, and the coverage area of ​​its hood opening surface includes the cutting area and the vertical distance of 30mm between the surface of the pole piece strip 2. The vertical distance between the inner wall of the hood opening 22 and the surface of the pole piece strip 2 is L1, and the distance L1 is coordinated with the dust extraction duct flow S1 of the dust removal inner hood 3, and is related to the mainstream wind speed v1 in the low wind speed field, and is designed based on the wind speed limit that meets the qualified pole piece jitter amount; the dust removal outer hood 4 can have various forms, and the coverage area of ​​its hood opening surface includes the dust removal inner hood 3, and the vertical distance L2 between the inner wall of the dust removal outer hood 4 and the outer wall of the dust removal inner hood 3; the vertical distance L2 is coordinated with the dust extraction duct flow S2 of the dust removal outer hood 4, and is related to the mainstream wind speed v2 in the high wind speed field, and is designed based on the wind speed required to remove most of the dust.

[0055] See also Figure 3 This embodiment also provides a laser cutting device, including: a fixed seat 24, a laser component 1, an upper roller 25 for supporting the movement of the pole piece strip 2, a lower roller 26 for driving the movement of the pole piece strip 2 and the dust removal device of the above embodiment, the laser component 1 is arranged on the side of the fixed seat 24 and corresponding to the pole piece strip 2, the upper roller 25, the dust removal device and the lower roller 26 are all arranged on the fixed seat 24, and the dust removal device is arranged between the upper roller 25 and the lower roller 26.

[0056] The dust removal device is placed between the upper roller 25 and the lower roller 26. This layout ensures that the dust removal device can be as close to the source of dust generation as possible, and avoids interference with the normal transmission of the pole piece strip 2. The dust removal device ensures the precise formation of low wind speed field and high wind speed field through its efficient wind speed control system, which not only avoids the shaking of the pole piece strip 2, but also ensures the effective removal of dust.

[0057] When the lower roller 26 rotates, it will generate a certain tension on the pole piece strip 2 thereon, thereby driving the pole piece strip 2 to move. The tension can reduce the shaking of the pole piece strip 2 to a certain extent, thereby improving the quality and efficiency of processing.

[0058] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0059] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive.

[0060] Inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A dust removal device for removing dust generated when a laser assembly cuts a pole piece strip, characterized in that: include: An inner dust removal cover and an outer dust removal cover, the outer dust removal cover is provided with an external dust removal port and a accommodating cavity connected to the external dust removal port, the pole piece strip is movably arranged in the accommodating cavity, the inner dust removal cover is arranged in the outer dust removal cover, the inner dust removal cover is provided with an inner dust removal port, the inner dust removal port is arranged corresponding to the cutting area of ​​the pole piece strip, and the outer dust removal port is arranged outside the cutting area of ​​the pole piece strip.

2. The dust removal device according to claim 1, characterized in that: The dust removal outer cover comprises: a cutting section and a transition section, the cutting section and the transition section are connected, and the external dust removal port, the accommodating chamber and the dust removal inner cover are arranged in the cutting section.

3. The dust removal device according to claim 2, characterized in that: The cutting section has a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface and the second side surface are arranged opposite to each other, and the third side surface and the fourth side surface are arranged opposite to each other.

4. The dust removal device according to claim 3, characterized in that: A first slit and a second slit are respectively provided on the first side surface and the second side surface, and the pole piece strip passes through the first slit, the accommodating cavity and the second slit in sequence.

5. The dust removal device according to claim 4, characterized in that: A smoothing piece is disposed on the first side surface, and the pole piece strip passes through the smoothing piece, the first slit, the accommodating cavity and the second slit in sequence.

6. The dust removal device according to claim 3, characterized in that: The third side surface and the fourth side surface are provided with laser cutting openings for the laser emitted by the laser assembly to pass through, and the fourth side surface is provided with a laser shielding plate, which is arranged corresponding to the laser cutting openings.

7. The dust removal device according to claim 3, characterized in that: At least one adsorption block is arranged on the first side surface.

8. The dust removal device according to claim 3, characterized in that: The first side surface, the second side surface, the third side surface and the fourth side surface are sequentially connected to form a cone.

9. The dust removal device according to claim 1, characterized in that: The outer dust removal ports are provided in plurality, and the plurality of outer dust removal ports are arranged around the inner dust removal port.

10. A laser cutting device, characterized in that: include: A fixed seat, a laser assembly, an upper roller for supporting the movement of the pole piece strip, a lower roller for driving the movement of the pole piece strip, and a dust removal device as described in any one of claims 1 to 9, wherein the laser assembly is arranged on the side of the fixed seat and corresponds to the pole piece strip, the upper roller, the dust removal device and the lower roller are all arranged on the fixed seat, and the dust removal device is arranged between the upper roller and the lower roller.

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