CN203124823U - Battery pole piece slitting knife - Google Patents

Abstract

A battery pole piece cutting tool of the utility model belongs to the field of battery manufacturing equipment, which includes upper and lower cutters, upper and lower cutter shafts that drive the upper and lower cutters to rotate, and spacers that make the cutters spaced on the cutter shafts. The sleeve and the retaining sleeve are characterized in that the upper cutter is a sharp knife and the lower cutter is a flat knife, and the outer diameter of the spacer and the retainer that fix the lower cutter is the same as the outer diameter of the lower cutter, so that when cutting the pole piece, it is extremely The piece is supported on the lower spacer and the lower stopper to ensure that the pole piece is cut off quickly and smoothly, eliminating wavy edges, small burrs, and no damage to the pole piece.

Description

A battery pole piece cutting tool

technical field

The utility model relates to battery production equipment, in particular to a cutting tool for battery pole pieces.

Background technique

In the production process of the battery pole piece, the pole piece must be cut after the coating is completed, and the quality of the battery pole piece, which is an important raw material for lithium batteries, is the key to ensuring the quality of lithium batteries, and the quality of battery pole pieces Good or bad, it is largely affected by the cutting quality of the pole piece. The slitting knife structure commonly used in production now: the upper and lower blades roll cutting structure, the upper blade is close to the edge of the lower knife, and the pole piece is overlapped by the upper and lower knives. After processing, it is cut into strips. The defect of the existing slitting blades is: because the cutting edges of the upper and lower blades are relatively fragile, the blades are easy to produce gaps during the cutting process, so the service life of the blades is short, and the cutting only depends on the shearing force of the two knives Slitting the pole piece, the burr of the pole piece after slitting is large, and the quality of the pole piece after slitting cannot be guaranteed.

Contents of the invention

Aiming at the defects of the existing slitting cutters, the utility model proposes a slitting cutter which can prevent wavy edges from being generated during the slitting of pole pieces and has a long tool life.

In order to achieve the above object, the technical scheme adopted in the utility model is as follows:

A battery pole piece cutting tool, including a movable tool holder, the tool holder includes an upper cutter shaft, a lower cutter shaft, an upper cutter, a lower cutter, an upper spacer, an upper stopper, a lower spacer, and a lower stopper , characterized in that the outer diameters of the lower spacer and the lower stopper are consistent with the outer diameter of the lower cutter.

Preferably, the upper cutting knife is a pointed knife, the lower cutting knife is a flat knife, and the edge of the upper cutting knife is opposite to the edge of the lower cutting knife.

The upper cutter is fixedly sleeved on the upper knife shaft through the spacer and the stop sleeve, and the lower cutter is fixedly sleeved on the lower knife shaft through the spacer and the stop sleeve.

The retainer is preferably made of sponge.

The tool holder includes a base, a first support plate and a second support plate, the first support plate and the second support plate are fixed at both ends of the base, connected with the base to form an integral structure, supporting the upper and lower cutter shaft.

The beneficial effect of the utility model is that: adopting the form of hobbing cutter with upper sharp knife and lower flat knife obviously improves the service life of the cutter; When cutting, the spacer and stop sleeve support the pole piece to ensure that the pole piece is cut off quickly and smoothly, eliminating the wavy edge, the burr is small, and will not damage the pole piece; the integral tool holder is used, which is more convenient for processing and has higher precision. .

Description of drawings

Fig. 1 is the front view of a preferred embodiment of the utility model

Fig. 2 is a schematic diagram of a rolling cut pole piece of a preferred embodiment of the utility model

specific implementation

The specific embodiment of the utility model will be further described below with reference to the accompanying drawings:

Referring to Figure 1 and Figure 2, a battery pole piece cutting tool, including a movable knife holder, the knife holder includes an upper cutter shaft 1, a lower cutter shaft 2, an upper cutter 3, a lower cutter 4, and an upper spacer 5 , Upper backstop 6, lower spacer 7, lower backstop 8, it is characterized in that, the outer diameter of lower spacer 7 and lower backstop 8 is consistent with the outer diameter of lower cutter 4.

The upper cutter 3 is a sharp knife, and the lower cutter 4 is a flat cutter. The blade of the upper cutter 3 is opposite to the blade of the lower cutter 4, and the upper cutter and the lower cutter cooperate to roll and cut the pole piece.

The upper cutter is fixedly set on the upper knife shaft through the upper spacer and the upper stopper, and the upper knife shaft is driven to rotate by the driving mechanism. The lower cutter is set on the lower knife shaft through the lower spacer and the lower stopper. The cutter shaft is driven to rotate by the driving mechanism, and the rotation directions of the upper cutter shaft and the lower cutter shaft are opposite.

The upper retaining sleeve and the lower retaining sleeve preferably adopt sponge, and other materials that are elastic, convenient for adjusting the position of the cutter, and contact with the cutter blade will not damage the cutter can also be used.

The knife rest comprises a base 91, a first support plate 92 and a second support plate 93, the first support plate 92 and the second support plate 93 are fixed on the two ends of the base 91, and are connected with the base as an integral structure to support the upper and lower The knife shaft is provided with rollers on the base 91, which can drive the knife rest to move as a whole.

The cutting tools in the prior art basically adopt the form of upper flat knife, lower flat knife or upper sharp knife and lower sharp knife. Both upper and lower flat knives are difficult to control in terms of tool adjustment and machining accuracy, and it is difficult to ensure accuracy. The cutting edge of all sharp knives is relatively fragile, is easy to produce gaps, and has a short service life, and the prior art has no support during the shearing process, easily damages the pole piece, and shears wavy edges. A pole piece cutting tool of the utility model adopts an upper sharp knife and a lower flat knife, and the pole piece is supported by a spacer sleeve and a stop sleeve during cutting, which overcomes the shortcomings of the prior art.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (1)

1. A kind of battery pole piece cutting tool, comprise movably knife rest, comprise cutter shaft, following cutter shaft, upper cutter, lower cutter on the knife rest, go up spacer, go up interstage sleeve, following spacer, following interstage sleeve, it is characterized in that described spacer down is consistent with the external diameter of described lower cutter with the external diameter of described interstage sleeve down.

2. battery pole piece cutting tool as claimed in claim 1 is characterized in that, described upper cutter is sharp knife, and described lower cutter is flat cutter, and the blade of described upper cutter is relative with the blade of described lower cutter.

3. battery pole piece cutting tool as claimed in claim 1, it is characterized in that, described upper cutter is set in described going up on the cutter shaft by last spacer and last interstage sleeve fixed interval, and described lower cutter is by spacer and following interstage sleeve fixed interval are set on the described cutter shaft down down.

4. battery pole piece cutting tool as claimed in claim 3 is characterized in that, described upward interstage sleeve and described interstage sleeve down are sponge.

5. as each described battery pole piece cutting tool of claim 1 to 4, it is characterized in that, described knife rest comprises base, first gripper shoe and second gripper shoe, described first gripper shoe and described second gripper shoe are fixed on the two ends of base, be connected to overall structure with described base, support upper and lower cutter shaft.

Images