Welding dust removal head

Abstract

The utility model provides a welding dust removal head, and relates to the technical field of battery cell manufacturing equipment. The welding dust removal head is provided with a welding channel, an adsorption hole, a positive pressure hole and a negative pressure hole. The adapting piece is adsorbed through negative pressure of the adsorption holes, so that the adapting piece is fixed to the welding dust removal head, and welding is facilitated; the welding channel can expose the part, needing to be welded, of the switching piece, so that laser can conveniently penetrate through the welding channel and act on the switching piece; in the welding process, protective gas is input into the welding channel through the positive pressure holes, and meanwhile, impurities such as welding slag or dust generated in the welding process are adsorbed through adsorption of the negative pressure holes. Therefore, through the reasonable design of the welding channel, the adsorption holes, the positive pressure holes and the negative pressure holes, the welding dust removal head can form an ideal flow channel for controlling dust flow, the efficient dust removal effect is achieved, the welding dust removal problem is efficiently solved, the overall structure is simple and compact, and the production and machining cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery cell manufacturing equipment, and particularly relates to a welding dust removal head. BACKGROUND

[0002] In the battery cell manufacturing process, the process of welding a switching piece is involved. Dust that affects the welding quality is generated during the welding process. Currently, negative pressure suction or a combination of positive and negative pressure is mainly used for dust removal on the market. However, due to the problem of laser light path avoidance, most of the dust removal methods of the cover opening are mainly achieved by blowing protective gas at the welding end face and negative pressure suction at a distance above.

[0003] However, such dust removal methods have some problems: the wind speed distribution of negative pressure suction is uneven, and the local wind speed is too high, which can cause dust to be retained; the convection field superposition effect formed by the interaction of positive and negative pressure can cause the welding slag dust to overflow under the action of blowing, thereby escaping into the jig or the inside of the product, and thus reducing the yield of the product. In addition, dust can also accumulate inside the welding head, reducing the service life of the welding head and increasing the replacement cost. SUMMARY

[0004] The utility model provides a kind of welding dust removal head, it can form the ideal flow passage of controlling dust flow, not only have efficient dust removal effect, efficiently solve the removal problem of welding dust, its overall structure is simple and compact, also reduce production and processing cost.

[0005] The embodiments of the utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a kind of welding dust removal head, and the welding dust removal head is provided with welding channel, adsorption hole, positive pressure hole and negative pressure hole;

[0007] The adsorption hole is used to adsorb switching piece, the welding channel is used to expose the switching piece, the positive pressure hole and the negative pressure hole are communicated with the welding channel, the positive pressure hole is used to input protective gas to the welding channel, and the negative pressure hole is used to adsorb impurities.

[0008] In an optional embodiment, the positive pressure hole and the negative pressure hole are oppositely arranged, and the positive pressure hole extends obliquely towards the bottom wall of the welding dust removal head.

[0009] In an optional embodiment, the angle between the extension path of the positive pressure hole and the horizontal plane is 5°-10°.

[0010] In an optional embodiment, the welding dust removal head is further provided with a negative pressure channel, the negative pressure channel comprises a first channel, a transition channel and a second channel connected in sequence, the first channel is communicated with the negative pressure hole, and the inner diameter of the transition channel gradually increases along the first channel in the direction of the second channel.

[0011] In an optional embodiment, the top and the bottom of the transition channel are arranged at an angle, and the angle is 30°-45°.

[0012] In an optional embodiment, the welding dust removal head is further provided with a positive pressure channel, the positive pressure channel comprises a third channel, a buffer channel and a fourth channel connected in sequence, and the third channel is communicated with the positive pressure hole.

[0013] In an optional embodiment, the number of the welding channels is multiple, the multiple welding channels are uniformly distributed around the central part of the welding dust removal head, the welding dust removal head is further provided with a negative pressure channel and a positive pressure channel, the negative pressure channel is communicated with the negative pressure holes of the two adjacent welding channels, and the positive pressure channel is communicated with the positive pressure holes of the two adjacent welding channels.

[0014] In an optional embodiment, the number of the adsorption holes is multiple, and the adsorption holes are arranged between the two adjacent welding channels.

[0015] In an optional embodiment, the welding dust removal head comprises a top wall, a side wall and a bottom wall, the side wall is connected with the top wall and the bottom wall, the adsorption holes are arranged on the bottom wall, the welding channels penetrate through the top wall and the bottom wall, and the welding dust removal head is further provided with an adsorption channel, one end of the adsorption channel penetrates through the side wall, and the other end is communicated with the adsorption holes.

[0016] In an optional embodiment, the width of the positive pressure hole is 0.5mm-0.8mm, and / or the width of the negative pressure hole is 3mm-5mm.

[0017] The welding dust removal head has the following beneficial effects: the adapter piece is fixed on the welding dust removal head through the adsorption holes, so that the welding is facilitated; the welding channel can expose the part of the adapter piece that needs to be welded, so that the laser can pass through the welding channel and act on the adapter piece; in the welding process, the protective gas is input into the welding channel through the positive pressure hole, and the welding slag or dust and other impurities generated in the welding process are adsorbed through the negative pressure hole. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-view structural schematic diagram of the welding dust removal head provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the welding dust removal head from a second perspective, provided in an embodiment of the present utility model.

[0021] Figure 3 A perspective view of the welding dust removal head provided in an embodiment of this utility model;

[0022] Figure 4 Provided for the embodiments of this utility model Figure 3 Sectional view of AA;

[0023] Figure 5 Provided for the embodiments of this utility model Figure 3 BB section view;

[0024] Figure 6 This is a third-view structural diagram of the welding dust removal head provided in an embodiment of the present utility model;

[0025] Figure 7 Provided for the embodiments of this utility model Figure 6 CC section view;

[0026] Figure 8 Provided for the embodiments of this utility model Figure 6 DD section view.

[0027] Icons: 10 - Welding dust removal head; 100 - Welding channel; 200 - Adsorption hole; 300 - Positive pressure hole; 400 - Negative pressure hole; 500 - Negative pressure channel; 510 - First channel; 520 - Transition channel; 530 - Second channel; 600 - Positive pressure channel; 610 - Third channel; 620 - Buffer channel; 630 - Fourth channel; 700 - Adsorption channel; 810 - Top wall; 820 - Side wall; 830 - Bottom wall. Detailed Implementation

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0030] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the present application when it is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0034] In the process of manufacturing the battery cell, the process of welding the adapter plate is involved. Dust affecting the welding quality is generated in the welding process. At present, the main way of dust removal on the market is to use negative pressure suction or positive and negative pressure combination. However, due to the problem of laser light path avoidance, the main dust removal way of most cover openings is to blow protective gas from the welding end face and to use negative pressure suction from a far distance above.

[0035] However, such dust removal methods have some major problems: the wind speed distribution of negative pressure suction is uneven, and the local wind speed is too high, which can cause dust retention; the superposition effect of the convection field formed by the interaction of positive and negative pressure can cause the welding slag dust to overflow under the action of blowing, thereby escaping into the jig or the inside of the product, thereby reducing the yield of the product. In addition, dust can also accumulate inside the welding head, reducing the service life of the welding head and increasing the replacement cost.

[0036] Based on the above problems, please refer to Figures 1 to 8 The welding dust removal head 10 provided by the utility model is suitable for the welding process of the battery cell adapter plate, and welding operation can be performed through the welding dust removal head 10, so that dust and foreign matter pollution can be effectively avoided, and the welding quality is improved.

[0037] In detail, the welding dust removal head 10 is provided with a welding channel 100, an adsorption hole 200, a positive pressure hole 300 and a negative pressure hole 400.

[0038] The adsorption hole 200 is used for adsorbing the adapter plate, the welding channel 100 is used for exposing the adapter plate, the positive pressure hole 300 and the negative pressure hole 400 are both in communication with the welding channel 100, the positive pressure hole 300 is used for inputting protective gas into the welding channel 100, and the negative pressure hole 400 is used for adsorbing impurities.

[0039] In the embodiment, the adapter plate is adsorbed by the adsorption hole 200 through negative pressure, so as to be fixed on the welding dust removal head 10, and welding is facilitated; the welding channel 100 can expose the part of the adapter plate that needs to be welded, so that the laser can pass through the welding channel 100 and act on the adapter plate; in the welding process, the protective gas is input into the welding channel 100 through the positive pressure hole 300, and the impurities such as welding slag or dust generated in the welding process are adsorbed through the negative pressure hole 400.

[0040] Therefore, the welding dust removal head 10 provided by the utility model can form an ideal flow channel for controlling dust flow through the reasonable design of the welding channel 100, the adsorption hole 200, the positive pressure hole 300 and the negative pressure hole 400, has high dust removal effect, solves the problem of welding dust removal, has a simple and compact overall structure, and reduces the production and processing cost.

[0041] Further, the positive pressure hole 300 and the negative pressure hole 400 are oppositely arranged, and the positive pressure hole 300 extends obliquely towards the bottom wall 830 of the welding dust removal head 10.

[0042] In the embodiment, in other words, the positive pressure holes 300 and the negative pressure holes 400 are arranged on the two opposite inner walls of the welding channel 100, and the extending direction of the positive pressure holes 300 is arranged as an obliquely downward direction, i.e. the protective gas is sprayed from the positive pressure holes 300 towards the obliquely downward direction, so that the protective gas sufficiently acts on the adapter piece, and the uniformity of the flow vector and speed of the gas flow is ensured.

[0043] Specifically, the included angle (as shown by angle I) between the extending path of the positive pressure holes 300 and the horizontal plane is 5°-10°, so that the spraying angle of the protective gas from the positive pressure holes 300 is reasonable, the angle is not too small to make the protective gas directly flow out from the negative pressure holes 400, and the angle is not too large to make the gas flow not smoothly discharged from the negative pressure holes 400. Figure 4

[0044] Further, the welding dust removal head 10 is further provided with a negative pressure channel 500, the negative pressure channel 500 comprises a first channel 510, a transition channel 520 and a second channel 530 connected in sequence, the first channel 510 is in communication with the negative pressure holes 400, and the inner diameter of the transition channel 520 gradually increases along the direction from the first channel 510 to the second channel 530.

[0045] In the embodiment, the second channel 530 is used to be connected with a vacuum device, so as to provide negative pressure for the vacuum device. The inner diameter of the transition channel 520 gradually increases along the direction from the first channel 510 to the second channel 530, i.e. the area of the fluid passing through the transition channel increases, so that the speed of the fluid decreases correspondingly.

[0046] Further, the top and the bottom of the transition channel 520 are arranged at an included angle (as shown by angle II), and the included angle is 30°-45°, so that the transition channel 520 is reasonably designed, and the uniformity of the flow vector and speed of the gas flow is ensured. Figure 5

[0047] Further, the width of the positive pressure holes 300 is 0.5mm-0.8mm, and the width of the negative pressure holes 400 is 3mm-5mm.

[0048] In the embodiment, first of all, it needs to be explained that the opening structure of the positive pressure holes 300 and the negative pressure holes 400 are both long strip-shaped rectangular structures extending along the horizontal direction, therefore, the width of the positive pressure holes 300 is as shown by X, and the width of the negative pressure holes 400 is as shown by Y. Figure 4 Figure 4

[0049] Further, the welding dust removal head 10 is further provided with a positive pressure channel 600, the positive pressure channel 600 comprises a third channel 610, a buffer channel 620 and a fourth channel 630 connected in sequence, and the third channel 610 is in communication with the positive pressure holes 300.

[0050] ​​​​In the embodiment, the fourth channel 630 is used to connect with a protective gas pump, so as to input the protective gas into the positive pressure channel 600 through the protective gas pump.

[0051] The buffer channel 620 is arranged between the third channel 610 and the fourth channel 630, so as to buffer the input protective gas.

[0052] In detail, as shown in the figure, the third channel 610 is connected by two vertical sections, one end of the first section is communicated with the positive pressure hole 300, the other end extends along the vertical direction and is connected with the second section, and the second section extends along the horizontal direction until communicated with the buffer channel 620.

[0053] It can be understood that the protective gas can be inert gas such as nitrogen, which is not limited here.

[0054] Further, the number of the welding channels 100 is multiple, the multiple welding channels 100 are uniformly distributed around the central part of the welding dust removal head 10, the negative pressure channel 500 is communicated with the negative pressure holes 400 of the adjacent two welding channels 100, and the positive pressure channel 600 is communicated with the positive pressure holes 300 of the adjacent two welding channels 100.

[0055] In the embodiment, by arranging multiple welding channels 100, multiple welding parts of the adapter sheet can be simultaneously exposed, so that multiple parts of the adapter sheet can be simultaneously welded, or multiple welding parts can be welded in sequence without moving the adapter sheet, thereby effectively improving the welding efficiency.

[0056] And each welding channel 100 is provided with a positive pressure hole 300 and a negative pressure hole 400, and the adjacent sides of the adjacent two welding channels 100 are all positive pressure holes 300 or all negative pressure holes 400, therefore, only one corresponding positive pressure channel 600 needs to be arranged between the adjacent two welding channels 100, and the positive pressure channel 600 is communicated with the positive pressure holes 300 arranged in the two welding channels 100; or one corresponding negative pressure channel 500 needs to be arranged between the adjacent two welding channels 100, and the negative pressure channel 500 is communicated with the negative pressure holes 400 arranged in the two welding channels 100.

[0057] In this way, the positive pressure blowing and the negative pressure adsorption of the welding dust removal head 10 can be met, and the structure of the welding dust removal head 10 is reasonable, and the space volume is effectively utilized.

[0058] Further, the number of the adsorption holes 200 is multiple, and the adsorption holes 200 are arranged between the adjacent two welding channels 100.

[0059] In the embodiment, in order to ensure the stability of the adsorption of the adapter piece, a plurality of adsorption holes 200 are arranged to simultaneously adsorb the adapter piece, so as to ensure that the adapter piece is stably adsorbed on the welding dust removal head 10 in the welding process, and the welding quality is improved.

[0060] In detail, the welding dust removal head 10 is further provided with an adsorption channel 700, the welding dust removal head 10 comprises a top wall 810, a side wall 820 and a bottom wall 830, the side wall 820 is connected with the top wall 810 and the bottom wall 830, the adsorption hole 200 is arranged on the bottom wall 830, the welding channel 100 penetrates through the top wall 810 and the bottom wall 830, one end of the adsorption channel 700 penetrates through the side wall 820, and the other end is in communication with the adsorption hole 200.

[0061] Optionally, as shown in the figure, the number of the welding channel 100 and the adsorption hole 200 is 4, the four welding channels 100 are distributed around the center of the welding dust removal head 10, and the four welding channels 100 and the four adsorption holes 200 are arranged in a staggered manner, that is, any adsorption hole 200 is located between two adjacent welding channels 100; and the number of the positive pressure channel 600 and the negative pressure channel 500 is 2, one of the positive pressure channels 600 is in communication with the positive pressure holes 300 of the two adjacent welding channels 100, the other positive pressure channel 600 is in communication with the positive pressure holes 300 of the other two adjacent welding channels 100, and the same as the negative pressure channel 500, one of the negative pressure channels 500 is in communication with the negative pressure holes 400 of the two adjacent welding channels 100, and the other negative pressure channel 500 is in communication with the negative pressure holes 400 of the other two adjacent welding channels 100.

[0062] In addition, the inner diameter of the welding channel 100 gradually decreases from the top wall 810 to the bottom wall 830.

[0063] In summary, the welding dust removal head 10 provided by the embodiment of the utility model, through the adsorption hole 200 negative pressure adsorption adapter piece, to fix the adapter piece on the welding dust removal head 10, convenient for welding, and the welding channel 100 can show the part of the adapter piece that needs to be welded, so that the laser can pass through the welding channel 100 and act on the adapter piece, in the welding process, the positive pressure hole 300 inputs the protective gas to the welding channel 100, and the negative pressure hole 400 is adsorbed to adsorb the welding slag or dust and other impurities generated in the welding process. Therefore, the welding dust removal head 10 is reasonably designed through the welding channel 100, the adsorption hole 200, the positive pressure hole 300 and the negative pressure hole 400, an ideal flow channel for controlling dust flow can be formed, not only has the high -efficient dust removal effect, efficiently solves the problem of removing welding dust, and the overall structure is simple and compact, and the production and processing cost is also reduced.

[0064] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A welding duster head characterized by, The welding dust removal head is provided with a welding channel, an adsorption hole, a positive pressure hole and a negative pressure hole. The adsorption hole is used for adsorbing an adapter piece, the welding channel is used for exposing the adapter piece, the positive pressure hole and the negative pressure hole are both in communication with the welding channel, the positive pressure hole is used for inputting protective gas into the welding channel, and the negative pressure hole is used for adsorbing impurities.

2. The welding duster head of claim 1, wherein, The positive pressure hole and the negative pressure hole are oppositely arranged, and the positive pressure hole extends obliquely towards a bottom wall of the welding dust removal head.

3. The welding duster head of claim 1, wherein, An included angle between an extension path of the positive pressure hole and a horizontal plane is 5°-10°.

4. The welding duster head of claim 1, wherein, The welding dust removal head is further provided with a negative pressure channel, the negative pressure channel comprises a first channel, a transition channel and a second channel which are connected in sequence, the first channel is in communication with the negative pressure hole, and an inner diameter of the transition channel gradually increases along a direction from the first channel to the second channel.

5. The welding duster head of claim 4, wherein, A top portion and a bottom portion of the transition channel are arranged at an included angle, and the included angle is 30°-45°.

6. The welding duster head of claim 1, wherein, The welding dust removal head is further provided with a positive pressure channel, the positive pressure channel comprises a third channel, a buffer channel and a fourth channel which are connected in sequence, and the third channel is in communication with the positive pressure hole.

7. The welding duster head of claim 1, wherein, The number of the welding channels is multiple, multiple welding channels are uniformly distributed around a central part of the welding dust removal head, the welding dust removal head is further provided with a negative pressure channel and a positive pressure channel, the negative pressure channel is in communication with the negative pressure holes of two adjacent welding channels, and the positive pressure channel is in communication with the positive pressure holes of two adjacent welding channels.

8. The welding duster head of claim 7, wherein, The number of the adsorption holes is multiple, and the adsorption holes are arranged between two adjacent welding channels.

9. The welding duster head of claim 1, wherein, The welding dust removal head comprises a top wall, a side wall and a bottom wall, the side wall is connected with the top wall and the bottom wall, the adsorption hole is arranged on the bottom wall, the welding channel penetrates through the top wall and the bottom wall, and the welding dust removal head is further provided with an adsorption channel, one end of the adsorption channel penetrates through the side wall, and the other end is in communication with the adsorption hole.

10. The welding duster head of claim 1, wherein, The width of the positive pressure hole is 0.5mm-0.8mm, and / or the width of the negative pressure hole is 3mm-5mm.

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