Electrode cap grinding and purging device and electrode cap grinding equipment

Abstract

The utility model discloses an electrode cap coping and purging device and electrode cap coping equipment, the electrode cap coping and purging device is connected to the electrode cap coping equipment, and the electrode cap coping equipment comprises an electrode cap coping cutter head and a cutter head driving mechanism for driving the electrode cap coping cutter head to rotate. The electrode cap sharpening and purging device comprises a purging spray head and a purging control circuit connected with the purging spray head, and the purging spray head is arranged above the electrode cap sharpening cutter head and points to the electrode cap sharpening cutter head. According to the utility model, a smooth electrode cap surface can be effectively obtained after the electrode is polished, the appearance quality problem of an aluminum welding spot caused by poor polishing of the electrode cap is reduced, and the labor hour and the cost of manual repair are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding equipment technical field, concretely relates to an electrode cap grinding and blowing device and an electrode cap grinding equipment comprising the same. BACKGROUND

[0002] With the popularity of electric vehicles, automobile lightweight manufacturing is more and more common, and the proportion of aluminum alloy materials in the body-in-white is increasing, and even some models adopt full aluminum body. In the welding process of aluminum alloy materials, aluminum resistance spot welding is the main process method for welding aluminum alloy sheets in the body-in-white of the automobile industry. In the resistance spot welding process, the current size and stability are important parameters to ensure the welding quality, and the welding spot is formed by the electrode cap of the welding gun passing through the part lap sheet to form resistance heat, which promotes the sheet to melt, cool and recrystallize. After a certain number of welding spots are welded, the welding surface will be affected by heat, glue and other foreign matters, resulting in a decrease in conductivity, which affects the current size and stability of the entire welding process. Therefore, after a certain number of welding spots are welded, the welding end face of the electrode cap needs to be ground to ensure the stability of the welding process.

[0003] The electrode cap used in aluminum resistance spot welding has certain differences in the grinding process setting compared with the electrode cap grinding process of steel resistance spot welding. The electrode cap of steel resistance spot welding only needs to be placed in the grinder, and the grinder completes the grinding of the electrode cap in one step, while the grinding of the aluminum resistance spot welding electrode cap needs two steps. The first step is consistent with the steel resistance spot welding, and the second step needs to perform a fine surface polishing grinding step on the electrode cap to ensure that the sheet forms a smooth welding surface after aluminum resistance spot welding and to ensure the nugget and appearance quality of the aluminum welding spot. However, when the aluminum resistance spot welding electrode is finely ground in the second step, the pressure is small, and the fine copper chips cut off are mostly in the form of thin sheets, which are easily attached to the grinding tool bit. After many electrode cap grinding, the excessive copper chips accumulated on the tool bit will block the grinding tool, causing the grinding function of the grinding tool to decrease, and irregular cutting debris will be attached to the electrode cap, which seriously affects the grinding quality of the electrode cap. This causes irregular scratches on the surface of the aluminum welding spot during welding, which seriously affects the surface appearance quality of the welding spot. For appearance requirements of the outer cover, this defect cannot be tolerated, and a large amount of manpower and material resources are required to repair the defect. SUMMARY

[0004] The utility model aims at providing an electrode cap grinding and blowing device that blows off the debris from the tool bit of the grinder to improve the grinding quality of the tool bit.

[0005] Another object of the utility model is to provide an electrode cap grinding equipment comprising the above-mentioned electrode cap grinding and blowing device.

[0006] In order to achieve the above object, the electrode cap grinding and blowing device is connected to the electrode cap grinding equipment, the electrode cap grinding equipment comprises an electrode cap grinding tool bit and a tool bit driving mechanism for driving the electrode cap grinding tool bit to rotate, and the electrode cap grinding and blowing device comprises a blowing nozzle and a blowing control circuit connected to the blowing nozzle, the blowing nozzle is arranged above the electrode cap grinding tool bit and is directed to the electrode cap grinding tool bit.

[0007] In an embodiment of the electrode cap grinding and blowing device, the blowing nozzle comprises a connecting portion and a nozzle portion connected to the connecting portion at an obtuse angle, and the nozzle portion is directed to the electrode cap grinding tool bit.

[0008] In an embodiment of the electrode cap grinding and blowing device, the nozzle portion comprises a nozzle axis, and the angle between the nozzle axis and the cutting direction of the electrode cap grinding tool bit is 15-45 degrees.

[0009] In an embodiment of the electrode cap grinding and blowing device, the connecting portion comprises a connecting axis, and the connecting axis is parallel to the cutting direction of the electrode cap grinding tool bit.

[0010] In an embodiment of the electrode cap grinding and blowing device, the electrode cap grinding equipment further comprises a tool bit upper blocking shell connected to the outside of the electrode cap grinding tool bit, the tool bit upper blocking shell has a through hole, the nozzle portion penetrates through the through hole, or the nozzle portion and the connecting portion penetrate through the through hole.

[0011] In an embodiment of the electrode cap grinding and blowing device, the connecting portion comprises a first connecting portion and a second connecting portion, the second connecting portion is connected between the first connecting portion and the nozzle portion, and the second connecting portion is deflected to the electrode cap grinding tool bit and extends.

[0012] The electrode cap grinding equipment comprises an electrode cap grinding tool bit and a tool bit driving mechanism for driving the electrode cap grinding tool bit to move, and further comprises the electrode cap grinding and blowing device.

[0013] In an embodiment of the electrode cap grinding equipment, the electrode cap grinding equipment further comprises a chip blowing device, the chip blowing device comprises a chip blowing nozzle and a chip blowing control circuit connected to the chip blowing nozzle, and the axis of the chip blowing nozzle is parallel to the cutting direction of the electrode cap grinding tool bit.

[0014] In an embodiment of the electrode cap grinding equipment, the chip blowing control circuit and the blowing control circuit are the same gas jet control circuit.

[0015] In an embodiment of the electrode cap grinding equipment, the chip blowing control circuit and the blowing control circuit are different gas jet control circuits.

[0016] The electrode cap grinding device has the beneficial effects that the electrode cap surface after the electrode cap is ground can be effectively ensured to be smooth, the appearance quality problem of the aluminum welding point caused by poor grinding of the electrode cap is reduced, and the artificial rework time and cost are reduced.

[0017] The utility model is described in detail below in combination with the drawings and specific embodiments, but is not limited to the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of an embodiment of the electrode cap grinding device of the utility model is shown in Fig. 1.

[0019] Figure 2 The structure diagram of an embodiment of the electrode cap grinding device of the utility model is shown in Fig. 1.

[0020] Figure 3 The structure diagram of an embodiment of the electrode cap grinding device of the utility model is shown in Fig. 1.

[0021] Figure 4 The structure diagram of an embodiment of the electrode cap grinding device of the utility model is shown in Fig. 1.

[0022] Figure 5 The structure diagram of an embodiment of the blowing nozzle of the electrode cap grinding and blowing device of the utility model is shown in Fig. 6.

[0023] Figure 6 The structure diagram of an embodiment of the blowing nozzle of the electrode cap grinding and blowing device of the utility model is shown in Fig. 6.

[0024] In the drawings, the reference signs

[0025] 10: electrode cap grinding device

[0026] 100: electrode cap grinding tool bit

[0027] 200: tool bit driving mechanism

[0028] 300: electrode cap grinding and blowing device

[0029] 310: blowing nozzle

[0030] 311: connecting part

[0031] 3111: first connecting part

[0032] 3112: second connecting part

[0033] 312: nozzle part

[0034] 320: blowing control circuit

[0035] 400: Cutting head guard

[0036] 410: Through hole

[0037] 500: Chip blowing device

[0038] 510: Chip blower

[0039] 520: Chip blowing control circuit

[0040] A: Cutting direction

[0041] S1: Nozzle axis

[0042] S2: Connecting axis Detailed Implementation

[0043] The following details various embodiments of this utility model, illustrated with accompanying drawings. Besides these detailed descriptions, this utility model can be widely implemented in other embodiments. Any easy substitutions, modifications, or equivalent changes to the described embodiments are included within the scope of this utility model, and the claims shall prevail. In the description of this specification, many specific details and implementation examples are provided to give the reader a more complete understanding of this utility model; however, these specific details and implementation examples should not be considered as limitations of this utility model. Furthermore, well-known steps or elements are not described in the details to avoid creating unnecessary limitations on this utility model.

[0044] like Figure 1 As shown, the electrode cap grinding device 10 of this utility model includes an electrode cap grinding head 100, a head driving mechanism 200, and an electrode cap grinding purging device 300. The head driving mechanism 200 drives the electrode cap grinding head 100 to rotate, and the electrode cap grinding purging device 300 is connected to the electrode cap grinding head 100. Specifically, the electrode cap grinding purging device 300 includes a purging nozzle 310 and a purging control circuit 320. The purging nozzle 310 is positioned above the electrode cap grinding head 100 and points towards it.

[0045] This invention provides a blower 310 above the electrode cap grinding head 100, which sprays air directly at the electrode cap grinding head 100. This increases the blowing function of the electrode cap grinding head 100, so that the fine copper shavings generated during the grinding process are blown away from the electrode cap grinding head 100 in a timely manner, preventing the cutting shavings from accumulating on the top of the electrode cap grinding head 100 and causing a decrease in grinding quality.

[0046] like Figure 1 and Figure 5As shown, in some embodiments of the utility model, the blowing nozzle 310 includes a connecting part 311 and a nozzle part 312 connected with the connecting part 311, and the connecting part 311 and the nozzle part 312 are connected at an obtuse angle, for example. The connecting part 311 is connected with the blowing control line 320, and the nozzle part 312 is located above the electrode cap grinding tool bit 100 and points to the electrode cap grinding tool bit 100 to blow the top of the electrode cap grinding tool bit 100, avoiding the accumulation of cutting debris.

[0047] Further, the nozzle part 312 includes a nozzle axis S1, and the included angle between the nozzle axis S1 and the cutting direction A of the electrode cap grinding tool bit 100 is 15 to 45 degrees. The blown gas flow can more evenly cover the working area of the electrode cap grinding tool bit 100, ensuring that each part can be fully cleaned or treated, and can more directly act on the working area, reducing energy loss and dispersion, thereby improving the overall efficiency of blowing. The nozzle part 312 is made of copper or stainless steel, for example, which has high hardness, is not easy to deform, is wear-resistant and has a long service life.

[0048] The connecting part 311 includes a connecting axis S2, which is parallel to the cutting direction A of the electrode cap grinding tool bit 100, easy to process and install while ensuring the working performance of the nozzle part 312, and saves installation space.

[0049] As shown, Figure 1 In some embodiments of the utility model, the electrode cap grinding device 10 further includes an upper tool bit blocking shell 400, and the upper tool bit blocking shell 400 has a through hole 410. The nozzle part 312 penetrates the through hole 410 and is located above the electrode cap grinding tool bit 100. Figure 1 In the embodiment shown, the connecting part 311 is located outside the upper tool bit blocking shell 400, the nozzle part 312 enters the upper tool bit blocking shell 400 obliquely downward from the through hole 410 on the upper tool bit blocking shell 400 and is located above the electrode cap grinding tool bit 100 to blow the upper surface of the electrode cap grinding tool bit 100, blow away the debris on the head of the electrode cap grinding tool bit 100, and reduce or eliminate the phenomenon of blocking debris of the electrode cap grinding tool bit 100. The through hole 410 is provided on the top of the upper tool bit blocking shell 400, for example.

[0050] As shown, Figure 2 The through hole 410 is located on the side of the upper tool bit blocking shell 400, and the nozzle part 312 and part or all of the connecting part 311 penetrate the through hole 410 on the side and are located above the electrode cap grinding tool bit 100 to directly blow the electrode cap grinding tool bit 100.

[0051] As shown, Figure 6As shown, in some other embodiments of this utility model, the connecting part 311 includes a first connecting part 3111 and a second connecting part 3112, with the second connecting part 3112 connecting between the first connecting part 3111 and the nozzle 312. The first connecting part 3111 is, for example, parallel to the cutting direction A of the electrode cap grinding head 100. The second connecting part 3112 is connected to the first connecting part 3111 at an obtuse angle, and the nozzle 312 is connected to the second connecting part 3112 at an obtuse angle, gradually guiding the air path upwards towards the electrode cap grinding head 100. At this time, the first connecting part 3111 is, for example, located outside the baffle 400 on the head, and the second connecting part 3112 and the nozzle 312 enter the inner side of the baffle 400 on the head through the through hole 410. The purging nozzle 310 can be disassembled along with the baffle 400 on the head, facilitating the replacement of the electrode cap grinding head 100.

[0052] like Figure 3 As shown, in some embodiments of this utility model, the electrode cap grinding device 10 further includes a chip blowing device 500. The chip blowing device 500 includes a chip blowing nozzle 510 and a chip blowing control circuit 520 connected to the chip blowing nozzle. The axis of the chip blowing nozzle 510 is substantially parallel to the cutting direction A of the electrode cap grinding head 100. Generally, the chip blowing device 500 and the head drive mechanism 200 controlling the electrode cap grinding head 100 are connected by the same signal. That is, when the electrode cap grinding head 100 starts working, the chip blowing control circuit 520 controls the chip blowing nozzle 510 to emit air. After the electrode cap grinding head 100 stops working, the chip blowing control circuit 520 controls the air source of the chip blowing nozzle 510 to be disconnected. During the electrode grinding process, when the electrode cap grinding head 100 stops working, the air circuit is closed, and the chip blowing device 500 also stops working.

[0053] The electrode cap grinding equipment 10 of this invention is equipped with both an electrode cap grinding and blowing device 300 and a chip blowing device 500, resulting in better chip blowing effect. Specifically, the blowing nozzle 310 of the electrode cap grinding and blowing device 300 is positioned at a 15-45° angle to the cutting direction A of the electrode cap grinding head 100. This is a pneumatic chip blowing mechanism targeting the top of the electrode cap grinding head 100, ensuring that the air outlet direction is effectively aligned with the electrode cap grinding head 100. This significantly improves the chip removal effect on the top of the electrode cap grinding head 100 and enhances the grinding quality of the electrode cap grinding equipment 10.

[0054] In some embodiments of this utility model, such as Figure 3 As shown, the purging control circuit 320 of the electrode cap grinding and purging device 300 and the chip removal control circuit 520 of the chip removal device 500 share the same jet control air path, for example. That is, the air path is integrated, using the air path of the grinder itself, applying a three-way connector, and branching the air path to the electrode cap grinding and purging device 300. The structure is simple and the cost is low.

[0055] In consideration of the fact that the electrode cap grinding tool 100 stops working, the electrode has not left the grinder, and the electrode cap grinding blowing device 300 and the scrap blowing device 500 still need to work at least partially, otherwise the blowing at this time cannot realize blowing of the scrap at the grinding tool part. Preferably, in other embodiments, as shown in Figure 4 The electrode cap grinding blowing device 300 and the scrap blowing device 500 have a blowing control gas path, that is, the blowing control line 320 of the electrode cap grinding blowing device 300 and the scrap blowing control line 520 of the scrap blowing device 500 are independent control gas paths. During grinding, the electrode cap grinding blowing device 300 blows the top of the electrode cap grinding tool 100, so that the fine copper scrap is blown away from the electrode cap grinding tool 100 in time, avoiding continuous accumulation. Moreover, the electrode cap grinding blowing device 300 has an independent gas path blowing function, that is, a separate valve piece is used for control, and an independent signal is used for control of opening and closing of the gas path. When the electrode leaves the grinder, the blowing still remains, eliminating the blowing blind area and ensuring the timeliness of blowing. At this time, the gas path of the scrap blowing device 500 has been disconnected. The electrode cap grinding blowing device 300 and the scrap blowing device 500 are provided with independent blowing control gas paths, the blowing time is controllable, and the scrap that has not been cleaned in place can be continuously cleaned when the electrode cap is pressed.

[0056] The process of the utility model is as follows: when the electrode cap state reaches the grinding condition, the grinding program is started, the robot drives the electrode to run to the electrode cap grinding equipment 10, the electrode slowly closes to clamp the electrode cap grinding tool 100, at the same time, the electrode cap grinding tool 100 starts to rotate, the electrode cap grinding blowing device 300 is started by the starting signal point in the grinding program, and the blowing nozzle 310 starts to blow. When the electrode cap grinding is completed, the electrode is slowly opened, at this time, the electrode cap grinding tool 100 stops rotating, but the electrode cap grinding blowing device 300 continuously keeps the blowing open state, and the scrap residue of the electrode cap grinding tool 100 part blocked by the electrode cap during the electrode cap grinding blowing process is cleaned. When the robot drives the electrode to leave the electrode cap grinding equipment 10, the blowing control line 320 of the electrode cap grinding blowing device 300 is closed.

[0057] According to the experiment, the electrode cap grinding blowing device 300 is arranged on the electrode cap grinding equipment 10, and the following effects are mainly embodied: a. The scrap blocking phenomenon of the grinding tool is reduced from 40% to less than 3%; b. The electrode cap grinding failure rate is reduced from 50% to less than 15%; c. The aluminum welding point appearance failure rate is reduced from 50% to less than 20%; and d. The part scrap rate due to aluminum point welding is reduced from 5% to less than 1%. The above effects can produce the following benefits: the scrap blocking phenomenon of the grinding tool is reduced, the electrode cap grinding quality is ensured, the repeated grinding frequency of the electrode cap and the blade is effectively reduced, the electrode cap and the grinding blade consumption is saved, the aluminum welding point appearance quality defect rate is reduced, and the manual repair work hours, auxiliary material consumption and part scrap rate are effectively reduced.

[0058] Through the effective data after the above field implementation, the electrode cap grinding auxiliary blowing device has wide application prospect, and all the electrode grinding of the welding gun of the aluminum alloy resistance spot welding process can be used. The blowing device can effectively solve the appearance scratch quality defect of the welding surface of the aluminum resistance spot welding, improve the one-time quality pass rate, and reduce the repair time and cost.

[0059] Of course, the utility model can also have other various embodiments, and the skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but these corresponding changes and deformations should all belong to the protection scope of the claims attached to the utility model.

Claims

1. An electrode cap dressing and blowing device connected to an electrode cap dressing apparatus, the electrode cap dressing apparatus comprising an electrode cap dressing tool head and a tool head driving mechanism for driving rotation of the electrode cap dressing tool head, characterized in that, The electrode cap grinding and blowing device comprises a blowing nozzle and a blowing control line connected with the blowing nozzle, the blowing nozzle is arranged above the electrode cap grinding tool and points to the electrode cap grinding tool.

2. The electrode cap dressing and blowing apparatus of claim 1, wherein, The blowing nozzle comprises a connecting part and a nozzle part connected with the connecting part at an obtuse angle, and the nozzle part points to the electrode cap grinding tool.

3. The electrode cap dressing and blowing apparatus of claim 2, wherein, The nozzle part comprises a nozzle axis, and the angle between the nozzle axis and the cutting direction of the electrode cap grinding tool is 15-45 degrees.

4. The electrode cap truing and purging apparatus of claim 2, wherein, The connecting part comprises a connecting axis, and the connecting axis is parallel to the cutting direction of the electrode cap grinding tool.

5. The electrode cap dressing and blowing device according to any one of claims 2 to 4, characterized in that The electrode cap grinding device further comprises a tool upper blocking shell connected outside the electrode cap grinding tool, the tool upper blocking shell has a through hole, the nozzle part is inserted through the through hole, or the nozzle part and the connecting part are inserted through the through hole.

6. The electrode cap truing and purging apparatus of claim 2, wherein, The connecting part comprises a first connecting part and a second connecting part, the second connecting part is connected between the first connecting part and the nozzle part, and the second connecting part is deflected and extended towards the electrode cap grinding tool.

7. An electrode cap dressing apparatus comprising an electrode cap dressing tool head and a tool head drive mechanism to drive movement of the electrode cap dressing tool head, characterised in that, The electrode cap grinding and blowing device of any one of claims 1-6 is further included.

8. The electrode cap dressing apparatus of claim 7, wherein, The electrode cap grinding device further comprises a chip blowing device, the chip blowing device comprises a chip blowing nozzle and a chip blowing control line connected with the chip blowing nozzle, and the axis of the chip blowing nozzle is parallel to the cutting direction of the electrode cap grinding tool.

9. The electrode cap trimming apparatus of claim 8, wherein, The chip blowing control line and the blowing control line are the same gas control line.

10. The electrode cap trimming apparatus of claim 8, wherein, The chip blowing control line and the blowing control line are different gas control lines.

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