Spin riveting device

Abstract

The utility model relates to the technical field of machine manufacturing, in particular to a spin riveting device, which can press-rivet a circular ring-shaped part to be bent of a part to be processed, and comprises a spin riveting punch, a rotary driving piece and a movable driving piece. Wherein the spin riveting punch is connected to the output end of the rotary driving part. The rotary driving part is connected to the output end of the movable driving part so that the rotary driving part can drive the spin riveting punch to rotate, and the movable driving part can drive the spin riveting punch to move through the rotary driving part so that the spin riveting punch can be close to and rotationally press-rivet the annular to-be-bent part or can be far away from the annular to-be-bent part. The spin riveting device does not need multiple repeated actions of multi-step pressure riveting, so that the working hours can be reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a rotary riveting device. Background Art

[0002] The traditional riveting process is divided into one-step riveting and multi-step riveting. One-step riveting is suitable for simple products, and multi-step riveting is suitable for products with high dimensional accuracy requirements. In the manufacturing process of the battery, a multi-step riveting process is required to rivet the conductive terminals and the insulating sealing rings so that they are bent and fixed to the shell. Specifically, it is necessary to first insert the circular riveting edges of the conductive terminals and the circular riveting edges of the insulating sealing rings into the assembly holes of the shell, and then perform multi-step riveting on the inserted parts of the conductive terminals and the insulating sealing rings from the inside of the shell, so that both are fixed in the assembly holes of the shell and can ensure sealing. However, in the actual production process, multi-step riveting involves repeated actions of the punch, which consumes a long time and reduces production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a rotary riveting device that can reduce working hours and improve production efficiency.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A rotary riveting device is provided, which can press-rivet a circular ring-shaped portion to be bent of a workpiece to be processed, and the rotary riveting device includes:

[0006] Riveting punch;

[0007] A rotary driving member, wherein the rotary riveting punch is connected to an output end of the rotary driving member;

[0008] A mobile driving member, wherein the rotary driving member is connected to the output end of the mobile driving member so that the rotary driving member can drive the rotary rivet punch to rotate, and the mobile driving member can drive the rotary rivet punch to move through the rotary driving member to approach and rotate and rivet the circular portion to be bent, or move away from the circular portion to be bent.

[0009] Optionally, the axial direction of the rotary riveting punch does not coincide with the rotational axis of the output end of the rotary driving member.

[0010] Optionally, the axial direction of the rotary riveting punch is parallel to the rotational axis of the output end of the rotary driving member.

[0011] Optionally, an eccentric positioning seat is further included, wherein a positioning groove is provided on the eccentric positioning seat, one end of the rotary rivet punch is connected to the positioning groove, and the eccentric positioning seat is connected to the output end of the rotary drive component.

[0012] Optionally, an avoidance groove is provided on the rivet end surface of the rivet punch.

[0013] Optionally, the avoidance groove is an annular groove.

[0014] Optionally, the inner ring side wall of the annular groove is arranged to be inclined so that the inner ring side wall faces away from the groove bottom of the annular groove.

[0015] Optionally, the bottom of the annular groove includes an annular surface, and the annular surface is inclined so that the annular surface faces the outer ring side wall of the annular groove.

[0016] Optionally, a clamping mechanism is further included, and the clamping mechanism is capable of clamping the workpiece to be processed.

[0017] Optionally, a transmission mechanism is further included, which is used to transmit the workpiece to be processed. The clamping mechanism can clamp the workpiece to be processed and place the workpiece to be processed in the area to be riveted or the area to be processed of the transmission mechanism.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a rotary riveting device capable of press-riveting a circular portion to be bent on a workpiece. The rotary riveting device includes a rotary riveting punch, a rotating drive, and a movable drive. The rotary riveting punch is connected to the output end of the rotating drive. The rotating drive is connected to the output end of the movable drive so that the rotating drive can drive the rotary riveting punch to rotate. The movable drive can then drive the rotary riveting punch to move closer to and rotate the circular portion to be bent, or further away from the circular portion to be bent. This rotary riveting device eliminates the need for multiple repetitive riveting operations, thereby reducing work hours and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a spin riveting device provided by an embodiment of the present utility model performing spin riveting on a workpiece;

[0021] Figure 2 This is a cross-sectional view of a workpiece after riveting is completed, as provided in an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Spin riveting punch; 2. Eccentric positioning seat;

[0024] 700, housing; 800, conductive terminal; 900, insulating sealing ring. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention, and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] like Figure 1-Figure 2 As shown, the rotary riveting device of this embodiment can press rivet the annular portion to be bent of the workpiece to be processed, and the rotary riveting device includes a rotary riveting punch 1, a rotary driving member (not shown in the figure) and a mobile driving member (not shown in the figure). Among them, the rotary riveting punch 1 is connected to the output end of the rotary driving member, and the rotary driving member is connected to the output end of the mobile driving member, so that the rotary driving member can drive the rotary riveting punch 1 to rotate, and the mobile driving member can drive the rotary riveting punch 1 to move through the rotary driving member to approach and rotate the annular portion to be bent, or move away from the annular portion to be bent. The rotary riveting device does not require multiple repeated actions of multi-step riveting, which can reduce working hours and improve production efficiency.

[0029] Optionally, the axial direction of the spin riveting punch 1 does not coincide with the axial direction of the output end of the rotary drive. Furthermore, optionally, the axial direction of the spin riveting punch 1 is parallel to the axial direction of the output end of the rotary drive. That is, the spin riveting punch 1 is eccentrically positioned, with the axial direction of the output end of the rotary drive corresponding to the center of the annular portion to be bent. However, during rotation, the spin riveting punch 1 forms a virtual cylindrical surface along its axial direction, with the center of the annular portion to be bent located axially on this cylindrical surface. This design enables more precise spin riveting and bending of the annular portion to be bent.

[0030] Optionally, the rotary riveting device further includes an eccentric locating seat 2 having a locating groove formed therein, one end of the rotary riveting punch 1 being connected to the locating groove, and the eccentric locating seat 2 being connected to the output end of the rotary drive. Optionally, the center of the locating groove of the eccentric locating seat 2 is located in the axial direction of the rotary riveting punch 1, but the center of the locating groove of the eccentric locating seat 2 is offset from the rotational axis of the output end of the rotary drive. Alternatively, in other embodiments, the center of the locating groove of the eccentric locating seat 2 can be offset from the axial direction of the rotary riveting punch 1, but the center of the locating groove of the eccentric locating seat 2 is in the rotational axis of the output end of the rotary drive, or all three can be offset from each other.

[0031] Optionally, in this embodiment, a relief groove is formed on the rivet end face of the rivet punch 1. Optionally, since the annular portion to be bent is annular in structure, the relief groove is configured as an annular groove. Optionally, the inner sidewall of the annular groove is inclined so that the inner sidewall faces away from the bottom of the annular groove. This design ensures that when the inner sidewall contacts the annular portion to be bent, the annular portion is stressed and gradually bends outward.

[0032] Optionally, the bottom of the annular groove includes an annular surface, which is inclined so as to face the outer side wall of the annular groove. This design allows the annular portion to be bent to be stressed and gradually bend outward when the annular surface contacts the portion to be bent.

[0033] Optionally, the riveting device further includes a clamping mechanism (not shown in the figure), which can clamp the workpiece to be processed to position the workpiece and cooperate with the riveting action of the riveting punch 1. The clamping mechanism adopts a mechanical structure with a clamping function commonly used in the prior art and will not be described in detail here.

[0034] Optionally, the riveting device further includes a transport mechanism (not shown) for transporting the workpiece to be processed. The clamping mechanism is capable of clamping the workpiece and positioning it in the riveting area or the processing area of the transport mechanism. Specifically, the clamping mechanism can clamp the workpiece from the processing area of the transport mechanism and move it to the riveting area. After the riveting process is completed, the clamping mechanism then clamps the workpiece from the riveting area to the processing area of the transport mechanism, allowing the workpiece to enter the downstream processing area. The transport mechanism employs a mechanical structure with a transport function commonly used in the prior art and will not be described in detail herein.

[0035] Optionally, in this embodiment, the rotation drive member adopts a servo motor to ensure rotation accuracy, and the movement drive member adopts a cylinder or a linear motor.

[0036] In this embodiment, the workpieces to be processed are the conductive terminal 800 and the insulating sealing ring 900. The rotary riveting device can rotate and press the conductive terminal 800 and the insulating sealing ring 900 so that they are bent and fixed to the housing 700. In the actual processing process, it is necessary to first insert the circular riveted edge of the conductive terminal 800 and the circular riveted edge of the insulating sealing ring 900 into the assembly hole of the housing 700, and then rotate and press the inserted parts of the conductive terminal 800 and the insulating sealing ring 900 from the inside of the housing 700 so that the inserted parts of the two are bent and fixed at the assembly hole of the housing 700 to ensure the sealing and connection strength. Of course, in other embodiments, the workpieces to be processed can also be other raw materials, intermediate products or products in the field of energy storage equipment, or raw materials, intermediate products or products in other fields.

[0037] To improve process precision and reduce costs, this rotary riveting device uses a servo motor to control a rotary riveting punch 1, which rotates eccentrically and at high speed to press-rivet the conductive terminal 800 and the insulating seal 900. This process can be completed using a single device, requiring minimal space, simplifying operation, and improving dimensional accuracy. The rotary punch can be quickly replaced to accommodate different product specifications. This rotary riveting device can shorten product verification cycles, eliminate the riveting process, reduce production line equipment costs, and improve assembly efficiency.

[0038] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The riveting device is characterized in that: The riveting device can be used to press-rivet the annular portion to be bent of the workpiece to be processed, and the riveting device includes: Riveting punch (1); A rotary driving member, wherein the rotary riveting punch (1) is connected to an output end of the rotary driving member; A movable driving member, wherein the rotary driving member is connected to an output end of the movable driving member so that the rotary driving member can drive the rotary rivet punch (1) to rotate, and the movable driving member can drive the rotary rivet punch (1) to move through the rotary driving member to approach and rotate to press and rivet the annular portion to be bent, or to move away from the annular portion to be bent.

2. The riveting device according to claim 1, characterized in that: The axial direction of the rotary riveting punch (1) does not coincide with the rotational axial direction of the output end of the rotary driving member.

3. The riveting device according to claim 2, characterized in that: The axial direction of the rotary riveting punch (1) is parallel to the rotational axis of the output end of the rotary driving member.

4. The riveting device according to claim 1, characterized in that: It also includes an eccentric positioning seat (2), a positioning groove is provided on the eccentric positioning seat (2), one end of the rotary riveting punch (1) is connected to the positioning groove, and the eccentric positioning seat (2) is connected to the output end of the rotary driving member.

5. The riveting device according to any one of claims 1 to 4, characterized in that: An avoidance groove is provided on the rivet end surface of the rivet punch (1).

6. The riveting device according to claim 5, characterized in that: The avoidance groove is an annular groove.

7. The riveting device according to claim 6, characterized in that: The inner ring side wall of the annular groove is arranged to be inclined so that the inner ring side wall faces away from the groove bottom of the annular groove.

8. The riveting device according to claim 6, characterized in that: The bottom of the annular groove includes an annular surface, and the annular surface is arranged to be inclined so that the annular surface faces the outer ring side wall of the annular groove.

9. The riveting device according to any one of claims 1 to 4, characterized in that: It also includes a clamping mechanism, which can clamp the workpiece to be processed.

10. The riveting device according to claim 9, characterized in that: It also includes a transmission mechanism, which is used to transmit the workpiece to be processed. The clamping mechanism can clamp the workpiece to be processed and place the workpiece to be processed in the area to be riveted or the area to be processed of the transmission mechanism.

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