Anti-deformation riveting mechanism for copper bar nut

Abstract

The utility model discloses a kind of copper bar nut anti-deformation riveting pressure mechanisms, it includes lower die assembly, upper die assembly and drive assembly;Lower die assembly is realized the accurate positioning of copper bar and nut by fixture seat and floating positioning column, upper die assembly adopts the double-pressure head structure of T-shaped copper bar positioning block and nut riveting pressure column, cooperation spring realizes the step action of first pressing copper bar and then riveting pressure nut, drive assembly provides stable driving force.The utility model solves the deformation problem caused by riveting hole extrusion expansion of copper bar in traditional riveting process, through accurate positioning, step riveting and mistake-proof detection design, significantly improve product quality stability, reduce the defective rate, improve production efficiency at the same time, reduce labor cost, applicable to new energy automobile copper bar, aluminium bar's nut riveting production.

Description

Technical Field

[0001] This utility model relates to the processing technology of new energy vehicle parts, specifically to an anti-deformation riveting mechanism for riveting copper busbars and aluminum busbar nuts. Background Technology

[0002] In the production of new energy vehicles, the riveting of nuts on copper and aluminum busbars is a critical process that directly affects the assembly accuracy and reliability of the product. Traditional riveting processes lack effective step-by-step clamping and precise positioning structures in the riveting fixtures, typically involving direct riveting of the nuts or studs. This method causes the riveting holes on the copper and aluminum busbars to expand under pressure during the riveting process, leading to product deformation and failing to meet the requirements of product drawings and assembly accuracy.

[0003] Meanwhile, traditional processes lack error-proofing mechanisms for nut assembly, easily leading to problems such as missing or misaligned nuts, resulting in unstable product quality and a high defect rate. Furthermore, the numerous manual intervention steps result in low production efficiency and high labor costs, making it difficult to meet the demands of large-scale production in the new energy vehicle industry. Therefore, there is an urgent need for a riveting mechanism that can solve product deformation issues, improve quality stability, and increase production efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a copper busbar nut anti-deformation riveting mechanism to solve the problems of product deformation, unstable quality, low production efficiency and high labor costs caused by traditional riveting processes.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a copper busbar nut anti-deformation riveting mechanism, used for riveting nuts on copper busbars, comprising:

[0006] The lower mold assembly includes a lower mold base, a jig base, and a positioning pin. The lower mold base is fixedly arranged horizontally. The jig base is fixed to the top side of the lower mold base and is used to position the copper busbar. The positioning pin is floating on the jig base and is the same as the positioning nut.

[0007] The upper mold assembly includes an upper mold base, a copper busbar positioning block, a nut crimping post, and a spring. The upper mold base is located directly above the lower mold base. The upper mold base has a mounting cavity, and the bottom side of the upper mold base has a through hole communicating with the mounting cavity. The nut crimping post is vertically fixed in the mounting cavity and its bottom end extends to the through hole. The copper busbar positioning block has a T-shaped structure and includes two side ears and a bottom pressing part. The copper busbar positioning block has a through hole extending to the bottom side of the pressing part. The ears are movably disposed in the mounting cavity. The nut crimping post is inserted into the through hole. The pressing part extends out of the bottom side of the upper mold base through the through hole. A spring is disposed in the mounting cavity, with its top end abutting against the top of the mounting cavity and its bottom end abutting against the ears.

[0008] A driving component is provided above the upper mold component and is used to drive the upper mold component to move up and down.

[0009] A preferred technical solution is as follows: the top side of the fixture base is provided with a fixture groove corresponding to the copper busbar, the bottom of the fixture groove is provided with a mounting hole, a second spring is provided in the mounting hole, the positioning post is inserted into the mounting hole, the bottom end of the second spring abuts against the bottom of the mounting hole, and the top end of the second spring abuts against the positioning post.

[0010] A preferred technical solution is that it further includes a nut detection optical fiber, which is fixed on the lower mold base and used to detect whether the nut is assembled onto the positioning post.

[0011] A preferred technical solution is as follows: it further includes two sets of limiting bolts, which are screwed onto the bottom side of the upper mold base and extend into the mounting cavity, opposite to the two ears.

[0012] A preferred technical solution is as follows: it further includes a guide post, which is vertically fixed to the top side of the lower mold base, and the upper mold base is provided with a guide hole, through which the guide post passes.

[0013] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows:

[0014] Solving the product deformation problem: Adopting a double pressure head structure of "pressing first and then riveting", the copper busbar positioning block fixes the copper busbar in advance by the elastic pressure of spring one, avoiding deformation of the copper busbar due to the expansion of the riveting hole during riveting. At the same time, the precise positioning of the positioning post and the jig groove ensures accurate riveting position and further reduces deformation.

[0015] Improve product quality stability: The installation of fiber optic nut detection can effectively prevent missing or incorrect nut installation, the guide post ensures the precise movement of the upper mold assembly, and the limit bolt controls the clamping force, which greatly reduces the defect rate and makes the product quality more stable.

[0016] Improved production efficiency: The automated step-by-step riveting process reduces manual intervention, and the riveting process is continuous and efficient, which greatly improves production efficiency compared with the traditional manual positioning riveting method;

[0017] Reduced production costs: Lower defect rates reduce raw material waste, automated processes reduce manual operation steps and lower labor costs, while simple structure and easy maintenance further reduce operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the riveting mechanism involved in this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the riveting mechanism involved in this utility model. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0021] Please see Figures 1-2 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] As shown in Figures 1-2, based on the overall technical concept of this utility model, a copper busbar nut anti-deformation riveting mechanism is proposed, comprising a lower die assembly, an upper die assembly, and a drive assembly:

[0025] In the lower mold assembly, the lower mold base 1 is horizontally fixed on the worktable, and the fixture base 2 is fixed to the top side of the lower mold base 1 by bolts. The fixture groove on the top side of the fixture base 2 is perfectly matched with the shape of the copper busbar 100 to be processed, ensuring that the copper busbar will not move horizontally after being placed. A spring 2 (not shown) is installed in the mounting hole at the bottom of the fixture groove. After the positioning pin 3 is inserted into the mounting hole, the spring 2 is in the extended state, so that the top of the positioning pin 3 protrudes from the surface of the fixture groove. The nut is sleeved on the top of the positioning pin 3 to achieve preliminary positioning. The positioning pin 3 can float up and down with the riveting pressure to avoid uneven force on the nut.

[0026] In the upper mold assembly, the upper mold base 4 is located directly above the lower mold base 1, and the mounting cavity is opened inside the upper mold base 4. The through hole is located on the bottom side of the upper mold base and connects to the mounting cavity. The nut rivet column 5 is vertically fixed to the top of the mounting cavity by bolts, and its axis coincides with the axis of the positioning column 3. The T-shaped copper busbar positioning block 6 is sleeved on the outside of the nut rivet column 5 through a through hole, the ear 61 slides in the mounting cavity, the pressing part 62 extends out of the bottom side of the upper mold base 4 through the through hole, and the spring 10 is located in the mounting cavity. Its two ends abut against the top of the mounting cavity and the ear 61 respectively, and always apply downward elastic pressure to the copper busbar positioning block 6.

[0027] The drive assembly (not shown) uses an existing riveting machine. Its output end is fixedly connected to the top of the upper mold base 4, which can drive the upper mold base 4 to move up and down along the guide post 7. The guide post 7 is vertically fixed on the top side of the lower mold base 1. The guide hole of the upper mold base 4 is clearance-fitted with the guide post 7 to ensure the precise movement of the upper mold assembly.

[0028] The nut detection fiber optic cable 8 is fixed to the lower mold base 1 by a bracket, with the detection end aligned with the top of the positioning post 3. When the nut is in place, the nut detection fiber optic cable 8 sends a signal to the control system, allowing the drive component to start. The limit bolt 9 is screwed onto the bottom side of the upper mold base 4 and is opposite to the ear 61. By adjusting the screwing depth of the limit bolt 9, the maximum downward distance of the copper busbar positioning block 6 can be controlled to avoid the crimping part 62 from excessively pressing the copper busbar 100.

[0029] Work process

[0030] The operator places the copper busbar 100 into the fixture slot of the fixture seat 2, and aligns the riveting hole of the copper busbar 100 with the positioning post 3.

[0031] Place the nut on the top of the positioning pin 3 to complete the initial positioning;

[0032] Once the nut detection fiber optic cable 8 detects that the nut is in place, it sends a signal to the control system, and the operator presses the start button.

[0033] The drive assembly drives the upper mold base 4 to move downward along the guide post 7, and the pressing part 62 of the copper busbar positioning block 6 first contacts the upper surface of the copper busbar 100.

[0034] As the upper mold base 3 continues to descend, the spring 10 is compressed, generating elastic pressure. This pressure, through the pressing part 62, firmly presses the copper busbar 100 into the fixture groove, preventing the copper busbar 100 from moving or warping during riveting.

[0035] As the upper mold base 3 moves further down, when the ear 61 contacts the bottom end of the limit bolt 9, the copper busbar positioning block 6 stops moving. At this time, the nut riveting column 5 continues to move down, applying riveting pressure to the nut. Under the positioning action of the positioning column 3, the nut undergoes plastic deformation and tightly engages with the riveting hole of the copper busbar 100.

[0036] After riveting is completed, the drive assembly drives the upper mold base 4 to reset upward, the spring 10 returns to its original state, and the copper busbar positioning block 6 moves upward and disengages from the copper busbar 100.

[0037] The operator removes the riveted copper busbar 100 and begins the next cycle.

[0038] Therefore, this utility model has the following advantages:

[0039] This utility model addresses the core pain points of traditional riveting processes through an integrated design that combines precise positioning, step-by-step riveting, error prevention detection, and guide limiting. It is suitable for the production of nut riveting for copper and aluminum busbars in new energy vehicles and has significant practical value and potential for widespread adoption.

[0040] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A copper busbar nut anti-deformation riveting mechanism, used for riveting nuts on copper busbars, characterized in that, include: The lower mold assembly includes a lower mold base, a jig base, and a positioning pin. The lower mold base is fixedly arranged horizontally. The jig base is fixed to the top side of the lower mold base and is used to position the copper busbar. The positioning pin is floating on the jig base and is the same as the positioning nut. The upper mold assembly includes an upper mold base, a copper busbar positioning block, a nut crimping post, and a spring. The upper mold base is located directly above the lower mold base and has an installation cavity. The bottom side of the upper mold base has a through hole communicating with the installation cavity. The nut crimping post is vertically fixed in the installation cavity and its bottom end extends to the through hole. The copper busbar positioning block has a T-shaped structure and includes two side ears and a bottom pressing part. The copper busbar positioning block has a through hole extending to the bottom side of the pressing part. The ears are movably disposed in the installation cavity. The nut crimping post is inserted into the through hole. The pressing part extends out of the bottom side of the upper mold base through the through hole. The spring is disposed in the installation cavity, with its top end abutting against the top of the installation cavity and its bottom end abutting against the ears. A driving component is provided above the upper mold component and is used to drive the upper mold component to move up and down.

2. The anti-deformation riveting mechanism for copper busbar nuts according to claim 1, characterized in that: The top side of the fixture base is provided with a fixture groove corresponding to the copper busbar. The bottom of the fixture groove is provided with a mounting hole. A second spring is provided in the mounting hole. The positioning post is inserted into the mounting hole. The bottom end of the second spring abuts against the bottom of the mounting hole, and the top end of the second spring abuts against the positioning post.

3. The anti-deformation riveting mechanism for copper busbar nuts according to claim 1, characterized in that: It also includes a nut detection fiber, which is fixed on the lower mold base and used to detect whether the nut is assembled onto the positioning post.

4. The anti-deformation riveting mechanism for copper busbar nuts according to claim 1, characterized in that: It also includes two sets of limiting bolts, which are screwed onto the bottom side of the upper mold base and extend into the mounting cavity opposite to the two ears.

5. The anti-deformation riveting mechanism for copper busbar nuts according to claim 1, characterized in that: It also includes guide posts, which are vertically fixed to the top side of the lower mold base. The upper mold base is provided with guide holes, and the guide posts pass through the guide holes.

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