CN207043189U - Lubrication structure of stamping die for power battery case - Google Patents

Abstract

The utility model provides a power battery shell stamping die's lubricating structure, including lower bolster and lower bolster, have the clearance space of calendering between lower bolster and the lower bolster, be equipped with the oil feed passageway to clearance space on the lower bolster, still include respectively with oil feed passageway communicating oil pipe interface and trachea interface, the lateral wall of lower bolster is equipped with the pipeline connecting block, oil pipe interface and trachea interface locate on the pipeline connecting block, the trachea interface is the straight line with the oil feed passageway and is linked together, the oil pipe interface is perpendicular to the setting of trachea interface; in the stamping process, lubricating oil flows through the oil inlet channel and flows into the inner wall of the die clearance space through compressed gas impact, so that the lubricating oil is uniformly distributed, the stamping and drawing effects of workpieces and the quality of products are improved, the reject ratio is reduced, the waste caused by excessive residual oil is avoided, the oil consumption is low, the cost is saved, the lubricating oil is prevented from splashing to other places of the die, and the cleaning work is simplified.

Description

Lubrication structure of stamping die for power battery case

technical field

The utility model relates to the technical field of dies, in particular to a lubricating structure for a stamping die of a power battery case.

Background technique

With the widespread application of new energy sources, power batteries as the core power source are in a period of rapid development, but the various links of its production technology have not yet formed relatively mature standards, and most technologies are still in the stage of learning from other processes and equipment, resulting in product The quality is uneven and the production efficiency is low.

Among them, the stamping and deep drawing of the power battery casing is still produced by traditional stamping dies, but it is different from traditional stamping parts in that the power battery casing is a box-shaped part, which requires a large amount of deep drawing and requires high surface finish. For this type of workpiece, it is usually necessary to use lubricating oil for assistance, which can reduce the friction coefficient between the material and the mold, so that the drawing force can be reduced by about 30%; and it can reduce the deformation degree of the material and reduce the limit drawing coefficient, thereby To reduce the number of deep drawing, the more important thing is to ensure the surface quality of the workpiece without causing surface scratches. At present, the lubricating structure used in the stamping die is to open an oil hole on the lower die base, and connect the oil pipe through the oil hole, and the lubricating oil flows into the inner wall of the gap space of the die along the oil hole. This lubricating structure has the following disadvantages: It is relatively sticky, unevenly distributed, and some places are not lubricated, resulting in poor stamping and drawing effect of the workpiece, easy to scratch the surface, and high defect rate; and some places have too much lubricating oil, which is easy to splash to other parts of the mold, and the cleaning intensity Large, and waste lubricating oil, large oil consumption, high cost.

Utility model content

The purpose of the utility model is to provide a lubricating structure for a stamping die of a power battery case.

In order to achieve the above object, the technical solution adopted in the utility model is:

A lubricating structure for a stamping die of a power battery case, comprising a lower template and a lower punch, a gap space for rolling is provided between the lower punch and the lower template, and an inlet leading to the gap space is provided on the lower template. The oil channel also includes an oil pipe interface and an air pipe interface respectively communicated with the oil inlet channel.

Further, the outer wall of the lower formwork is provided with a pipe connection block, and the oil pipe interface and air pipe interface are arranged on the pipe connection block.

Further, the air pipe interface is connected to the oil inlet channel in a straight line, and the oil pipe interface is arranged perpendicular to the air pipe interface.

The beneficial effects of the utility model are: during the stamping process, the lubricating oil flows through the oil inlet channel and flows into the inner wall of the mold gap space through the impact of the compressed gas, so that the lubricating oil is evenly distributed, which improves the stamping and drawing effect of the workpiece and the quality of the product, and reduces the The defect rate avoids the waste caused by too much residual oil, and the less oil is used, which saves the cost, prevents the lubricating oil from splashing to other parts of the mold, and makes the cleaning work easier.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the overall structural representation of lubricating structure in the embodiment;

Fig. 2 is the transverse sectional schematic diagram of lubricating structure in the embodiment;

Fig. 3 is a schematic longitudinal sectional view of the lubricating structure in the embodiment.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

Embodiments, referring to the lubrication structure of a stamping die for a power battery case shown in Figures 1 and 3, it includes a lower template 1 and a lower punch 2, and there is a rolling gap between the lower punch 2 and the lower template 1 3. The lower template 1 is provided with an oil inlet passage 4 leading to the gap space 3, and also includes an oil pipe interface 5 and an air pipe interface 6 respectively communicating with the oil inlet passage 4. The outer side of the lower template 1 The wall is provided with a pipeline connection block 7, the oil pipe interface 5 and the air pipe interface 6 are arranged on the pipeline connection block 7, which is convenient for the manufacture of the mold and the pipeline connection, and the air pipe interface 6 is connected to the oil inlet channel 4 in a straight line The oil pipe interface 5 is arranged perpendicular to the air pipe interface 6, and the lubricating oil entering from the oil pipe interface 5 is impacted by the high-pressure gas entering from the air pipe interface 6 towards the direction of the oil inlet channel 4, so that the lubricating oil can enter the gap more easily In space 3. During the stamping process, lubricating oil flows through the oil inlet channel and flows into the inner wall of the mold gap space through the impact of compressed gas. The gas impact force is strong, which makes the lubricating oil evenly distributed, improves the stamping and drawing effect of the workpiece and the quality of the product, and reduces the defective rate. The waste caused by too much residual oil is avoided, the oil consumption is small, the cost is saved, the lubricating oil is prevented from splashing to other parts of the mold, and the cleaning work is simplified.

The above description does not limit the technical scope of the present utility model. Any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (3)

1. A kind of 1. lubrication system of electrokinetic cell shell diel, it is characterised in that：It is convex under described including lower template and lower punch There is the clearance space of calendering between mould and lower template, the lower template is provided with the oil inlet passage towards the clearance space, Also include the tubing interface and air pipe interface communicated respectively with the oil inlet passage.
2. A kind of 2. lubrication system of electrokinetic cell shell diel according to claim 1, it is characterised in that：The lower mould The lateral wall of plate is provided with pipeline contiguous block, and the tubing interface and air pipe interface are on the pipeline contiguous block.
3. A kind of 3. lubrication system of electrokinetic cell shell diel according to claim 2, it is characterised in that：The tracheae Interface is linearly connected with the oil inlet passage, and the tubing interface is set perpendicular to the air pipe interface.