Pulse heat staking assembly

Abstract

The utility model discloses a kind of pulse hot riveting assemblies, including heating element and metal hot riveting head, metal hot riveting head includes hot riveting head body and press forming part, the first end of hot riveting head body is connected to heating element, press forming part is connected in the second end of hot riveting head body;Hot riveting head body is opened with transverse through hollow hole and slit, hollow hole is located in the second end of hot riveting head body, slit extends from the first end of hot riveting head body to hollow hole;Wherein, hot riveting head body is also provided with gas passage, the first end opening of gas passage is located in the outer surface of hot riveting head body and is connected with gas guide needle tube, the second end opening of gas passage is located in the inner side wall of hollow hole;Gas guide needle tube is configured to obtain cooling gas from outside and inject cooling gas through gas passage towards press forming part.The scheme of the present application can greatly reduce the cooling time, and can improve the cooling efficiency and reduce the gas consumption of cooling gas.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot riveting equipment, and specifically relates to a pulse hot riveting assembly. Background Technology

[0002] In the new energy vehicle CCS (Cells Contact System) industry, the plastic rivets on the integrated busbars require a hot riveting process. Specifically, this involves heating a metal riveting head and then riveting the plastic rivets onto the busbar to achieve thermoforming, thus positioning components such as aluminum bars or FPCs. After forming, cooling gas is rapidly introduced to cool the metal riveting head, allowing the plastic rivets to quickly set and facilitating separation while preventing adhesion between the metal and plastic rivets. Therefore, rapid cooling of the metal riveting head is crucial.

[0003] In the prior art, there are two main cooling methods for hot riveting components: (1) By setting up a top-down air blowing pipe, cooling gas is introduced from above the metal hot riveting head into the gap of the metal hot riveting head for cooling, such as the technical solution disclosed in patent publication number CN212219355U. This cooling method will cause a large amount of cooling gas to escape into the surrounding air, resulting in a large gas consumption. (2) The air blowing pipe is set on the side of the metal hot riveting head, and cooling gas is introduced into the outside of the metal hot riveting head for purging and cooling, such as the technical solution disclosed in patent publication number CN210969999U. In this cooling method, the air blowing pipe is far away from the metal hot riveting head, and the cooling time is long. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a pulse hot riveting assembly to solve the problem of how to reduce cooling time and reduce cooling gas consumption.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pulsed hot riveting assembly includes a heating element and a metal hot riveting head. The metal hot riveting head includes a hot riveting head body and a pressing and forming part. A first end of the hot riveting head body is connected to the heating element, and the pressing and forming part is connected to a second end of the hot riveting head body. The hot riveting head body has a transversely penetrating hollow hole and a slit. The hollow hole is located at the second end of the hot riveting head body, and the slit extends from the first end of the hot riveting head body to the hollow hole.

[0007] The hot riveting head body is also provided with a gas channel. The first end opening of the gas channel is located on the outer surface of the hot riveting head body and is connected to a gas guide needle tube. The second end opening of the gas channel is located on the inner side wall of the hollow hole. The gas guide needle tube is configured to obtain cooling gas from the outside and spray the cooling gas toward the pressing and forming part through the gas channel.

[0008] Preferably, the gas channel is inclined at a predetermined angle from top to bottom toward the pressing and forming part.

[0009] Preferably, the hot riveting head body is provided with two gas channels, which are arranged opposite to each other on both sides of the hollow hole, and each gas channel is connected to a gas guide needle tube.

[0010] Preferably, the width of the perforated hole is several times greater than the width of the slit.

[0011] Preferably, the surface of the pressing and forming part opposite to the hollow hole is formed as a concave arc surface.

[0012] Preferably, the pulse hot riveting assembly includes two metal hot riveting heads, which are respectively connected to the heating element.

[0013] Preferably, the heating element is a conductive block for supplying pulsed current to the metal hot riveting head.

[0014] Preferably, the pulse hot riveting assembly further includes a mounting plate, a first connecting plate, a second connecting plate, a third connecting plate, a lifting drive module, and an insulating element; the first connecting plate is connected to the mounting plate and is provided with a guide rail pair, the second connecting plate is movably connected to the guide rail pair, the third connecting plate is connected to the top of the first connecting plate, the lifting drive module is connected to the third connecting plate, the power output end of the lifting drive module is connected to the upper end of the second connecting plate, the insulating element is connected to the lower end of the second connecting plate, and the heating element is connected to the lower end of the insulating element.

[0015] Preferably, the pulse hot riveting assembly is provided with a nozzle for connecting to an external cooling air source, and the nozzle is connected to the insulating element by a fixing block; the first end of the air guide needle is connected to the nozzle, and the second end of the air guide needle is connected to the first end opening of the gas channel.

[0016] The pulse hot riveting assembly provided in this embodiment of the invention features a gas channel within the hot riveting head body. The first end of the gas channel opens on the outer surface of the hot riveting head body and is connected to a gas guide needle. The second end of the gas channel opens on the inner wall of a perforated hole adjacent to the pressing and forming part. The gas guide needle draws cooling gas from the outside and sprays it through the gas channel towards the pressing and forming part for cooling. Therefore, during cooling, the cooling gas can be directly sprayed onto the pressing and forming part at close range, significantly reducing cooling time. Furthermore, the cooling gas is introduced into the perforated hole adjacent to the pressing and forming part to achieve cooling. The high-speed sprayed cooling gas can be reflected multiple times within the perforated hole, making multiple contacts with the hot riveting head body and the pressing and forming part, thus carrying away more heat, improving cooling efficiency and reducing gas consumption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pulse hot riveting assembly in a preferred embodiment of the present invention;

[0018] Figure 2 Is it like this? Figure 1 A schematic diagram of the structure of the metal hot riveting head in the pulse hot riveting assembly;

[0019] Figure 3 Is it like this? Figure 2 A cross-sectional view of the metal hot riveting head at the location corresponding to the gas channel;

[0020] Figure 4 This is a schematic diagram of the structure of a metal hot riveting head in an optional embodiment of the present invention;

[0021] Figure 5 Is it like this? Figure 4 A cross-sectional view of the metal hot riveting head at the location corresponding to the gas channel;

[0022] Figure 6 This is a schematic diagram of the pulse hot riveting assembly in another preferred embodiment of the present invention;

[0023] Figure 7 Is it like this? Figure 6 A schematic diagram of the structure of the metal hot riveting head in the pulse hot riveting assembly;

[0024] Figure 8 Is it like this? Figure 7 A cross-sectional view of the metal hot riveting head at the location corresponding to the gas channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0026] It should be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0028] Example 1

[0029] This utility model embodiment provides a pulse hot riveting assembly, such as... Figure 1 As shown, the pulse hot riveting assembly mainly includes a mounting plate 1, a first connecting plate 2, a second connecting plate 3, a third connecting plate 4, a lifting drive module 5, an insulating element 6, a heating element 7, and a metal hot riveting head 10.

[0030] The first connecting plate 2 is connected to the mounting plate 1 and is provided with a guide rail pair 2a. The second connecting plate 3 is movably connected to the guide rail pair 2a. The third connecting plate 4 is connected to the top of the first connecting plate 1. The lifting drive module 5 is connected to the third connecting plate 4. The power output end of the lifting drive module 5 is connected to the upper end of the second connecting plate 3. The insulating element 6 is connected to the lower end of the second connecting plate 3. The heating element 7 is connected to the lower end of the insulating element 6. The metal hot riveting head 10 is located below the insulating element 6 and connected to the heating element 7.

[0031] The mounting plate 1 is mainly used to connect the pulse hot riveting assembly to the riveting equipment. The lifting drive module 5 is configured to drive the second connecting plate 3 to rise and fall, thereby driving the heating element 7 and the metal hot riveting head 10 to rise and fall through the insulating element 6, thereby adjusting the riveting pressure of the metal hot riveting head 10 during hot riveting.

[0032] In this embodiment, as Figure 1 As shown, the pulsed hot riveting assembly is provided with a metal hot riveting head 10, which is connected to the heating element 7. Specifically, the heating element 7 is a conductive block for supplying pulsed current to the metal hot riveting head 10.

[0033] Specifically, see Figures 1 to 3 The metal hot riveting head 10 includes a hot riveting head body 11 and a pressing and forming part 12. The first end of the hot riveting head body 11 is connected to the heating element 7, and the pressing and forming part 12 is connected to the second end of the hot riveting head body 11. Typically, the hot riveting head body 11 and the pressing and forming part 12 are integrally formed.

[0034] The hot riveting head body 11 has a transversely penetrating perforation 13 and a slit 14. The perforation 13 is located at the second end of the hot riveting head body 11, and the slit 14 extends from the first end of the hot riveting head body 11 to the perforation 13. As a preferred embodiment, the width of the perforation 13 is several times larger than the width of the slit 14.

[0035] Furthermore, the hot riveting head body 11 is also provided with a gas channel 15. The first end opening 151 of the gas channel 15 is located on the outer surface of the hot riveting head body 11 and is connected to a gas guide needle tube 8. The second end opening 152 of the gas channel 15 is located on the inner sidewall of the hollow hole 13. The gas guide needle tube 8 is configured to obtain cooling gas from the outside and spray the cooling gas towards the pressing and forming part 12 through the gas channel 15.

[0036] Based on the metal hot riveting head 10 as described above, during the riveting operation, when cooling is required, the air guide needle 8 introduces cooling gas from the outside through the gas channel 15 into the perforated hole 13 and sprays it towards the pressing and forming part 12. Thus, the cooling gas is introduced into the interior of the metal hot riveting head 10 for cooling, and can be directly sprayed onto the pressing and forming part 12 at close range, closer to the working surface, with a short cooling path and small cooling area, which can greatly reduce cooling time and improve production efficiency. Furthermore, the high-speed sprayed cooling gas can be reflected multiple times in the perforated hole 13, making multiple contacts with the hot riveting head body 11 and the pressing and forming part 12, thus carrying away more heat, improving cooling efficiency and reducing gas consumption. Moreover, based on the space defined by the perforated hole 13, it can also prevent the high-speed sprayed cooling gas from blowing away components around the metal hot riveting head 10.

[0037] In the preferred scheme, such as Figure 3 As shown, the gas channel 15 is inclined at a predetermined angle from top to bottom toward the pressing and forming part 12. In this embodiment, the first end opening 151 of the gas channel 15 is located on the outer side wall of the hot riveting head body 11, and the second end opening 152 of the gas channel 15 is located on the inner side wall of the hollow hole 13. In the vertical direction, the first end opening 151 is located above the second end opening 152, thereby making the gas channel 15 inclined at a predetermined angle from top to bottom.

[0038] In this embodiment, the surface of the pressing and forming part 12 facing away from the hollow hole 13 is formed as a concave arc surface, thereby making the hot riveting form a mushroom head shape.

[0039] In this embodiment, as Figure 1 As shown, the pulse hot riveting assembly is provided with a nozzle 9 for connecting to an external cooling air source. The nozzle 9 is connected to the insulating element 6 via a fixing block 9a. The first end of the air guide needle tube 8 is connected to the nozzle 9, and the second end of the air guide needle tube 8 is connected to the first end opening 151 of the gas channel 15.

[0040] In another alternative implementation, see [link to implementation details]. Figure 4 and Figure 5 In the metal hot riveting head 10, the hot riveting head body 11 is provided with two gas channels 15, which are arranged opposite to each other on both sides of the hollow hole 13. Each gas channel 15 is connected to a gas guide needle tube 8. By providing two opposite gas channels 15, the cooling rate can be further improved.

[0041] Example 2

[0042] This utility model embodiment provides another pulse hot riveting assembly, see reference. Figure 6 The difference between the pulse hot riveting assembly of this embodiment and the pulse hot riveting assembly of Embodiment 1 is as follows: (1) The pulse hot riveting assembly of this embodiment includes two metal hot riveting heads 20; (2) The specific structural shape of the metal hot riveting head 20 in this embodiment is different from that of the metal hot riveting head 10 in Embodiment 1. The following only describes the differences between this embodiment and Embodiment 1, and the same parts will not be described again.

[0043] like Figure 6 As shown, the pulse hot riveting assembly in this embodiment includes two metal hot riveting heads 20, which are respectively connected to the heating element 7. The heating element 7 simultaneously supplies pulse current to the two metal hot riveting heads 20, and each metal hot riveting head 20 is connected to a gas guide needle tube 8.

[0044] Among them, see Figure 7 and Figure 8 Similar to the metal hot riveting head 10 in Embodiment 1, the metal hot riveting head 20 also includes a hot riveting head body 21, a pressing and forming part 22, a hollow hole 23, a slit 24, and a gas channel 25. The first end opening 251 of the gas channel 25 is located on the top surface of the hot riveting head body 21, and the second end opening 252 of the gas channel 25 is located on the inner sidewall of the hollow hole 23, thereby causing the gas channel 25 to be inclined at a predetermined angle from top to bottom toward the pressing and forming part 22.

[0045] In summary, the pulse hot riveting assembly provided in the above embodiments of this utility model, by providing a gas channel in the hot riveting head body and connecting it with a gas guide needle, allows the cooling gas to be directly sprayed onto the pressing and forming part at close range during cooling, which can greatly reduce the cooling time. Furthermore, the cooling gas is introduced into the hollow hole adjacent to the pressing and forming part to contact the pressing and forming part for cooling. The high-speed sprayed cooling gas can be reflected multiple times in the hollow hole, making multiple contacts with the hot riveting head body and the pressing and forming part to remove more heat, thereby improving cooling efficiency and reducing gas consumption.

[0046] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A pulse hot riveting assembly, comprising a heating element and a metal hot riveting head, characterized in that, The metal hot riveting head includes a hot riveting head body and a pressing and forming part. The first end of the hot riveting head body is connected to the heating element, and the pressing and forming part is connected to the second end of the hot riveting head body. The hot riveting head body has a transverse through-hole and a slit. The through-hole is located at the second end of the hot riveting head body, and the slit extends from the first end of the hot riveting head body to the through-hole. The hot riveting head body is also provided with a gas channel. The first end opening of the gas channel is located on the outer surface of the hot riveting head body and is connected to a gas guide needle tube. The second end opening of the gas channel is located on the inner side wall of the hollow hole. The gas guide needle tube is configured to obtain cooling gas from the outside and spray the cooling gas toward the pressing and forming part through the gas channel.

2. The pulse hot riveting assembly according to claim 1, characterized in that, The gas channel is inclined at a predetermined angle from top to bottom toward the pressing and forming part.

3. The pulse hot riveting assembly according to claim 1, characterized in that, The hot riveting head body is provided with two gas channels, which are arranged opposite each other on both sides of the hollow hole, and each gas channel is connected to a gas guide needle tube.

4. The pulse hot riveting assembly according to claim 1, characterized in that, The width of the perforated hole is several times greater than the width of the slit.

5. The pulse hot riveting assembly according to claim 1, characterized in that, The surface of the pressing and forming part that is away from the hollow hole is formed into a concave arc surface.

6. The pulse hot riveting assembly according to claim 1, characterized in that, The pulse hot riveting assembly includes two metal hot riveting heads, which are respectively connected to the heating element.

7. The pulse hot riveting assembly according to claim 1, characterized in that, The heating element is a conductive block used to supply pulsed current to the metal hot riveting head.

8. The pulse hot riveting assembly according to any one of claims 1-7, characterized in that, The pulse hot riveting assembly further includes a mounting plate, a first connecting plate, a second connecting plate, a third connecting plate, a lifting drive module, and an insulating element; the first connecting plate is connected to the mounting plate and is provided with a guide rail pair, the second connecting plate is movably connected to the guide rail pair, the third connecting plate is connected to the top of the first connecting plate, the lifting drive module is connected to the third connecting plate, the power output end of the lifting drive module is connected to the upper end of the second connecting plate, the insulating element is connected to the lower end of the second connecting plate, and the heating element is connected to the lower end of the insulating element.

9. The pulse hot riveting assembly according to claim 8, characterized in that, The pulse hot riveting assembly is provided with a nozzle for connecting to an external cooling air source. The nozzle is connected to the insulating element via a fixing block. The first end of the air guide needle is connected to the nozzle, and the second end of the air guide needle is connected to the first opening of the gas channel.

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