CN110893423B

CN110893423B - An electrode sheet punching machine using voiceprint rapid detection

Info

Publication number: CN110893423B
Application number: CN201911326500.3A
Authority: CN
Inventors: 朱建随; 卢冉峰
Original assignee: Hubei Tengwei Electronic Technology Co ltd
Current assignee: Hubei Tengwei Electronic Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2025-04-11
Anticipated expiration: 2039-12-20
Also published as: CN110893423A

Abstract

The invention relates to the technical field of batteries, and discloses an electrode slice punching machine for quickly detecting by utilizing voiceprints. The invention has the advantages of convenient operation and high efficiency, and the invention utilizes the same air flow to detect the principle that the sound waves generated by the sound generating holes with the shape and structure are different, and compares the sound waves generated by the hole blowing of the punching electrode sheet with the reference object, thus the quality of the product can be judged, the production can be carried out while the detection is carried out, the assembly line operation is carried out, and the operation is convenient and quick. 2. The invention can automatically detect through an instrument without manual comparison, the equipment can detect at any time, and the situation that a large number of defective products or defective products are mixed is avoided, so that the waste is greatly reduced, and the precision is higher. 3. The equipment is simple, the cost is low, the inspection equipment is easy to purchase and install, the production cost is reduced, and the economic benefit is improved.

Description

Electrode slice punching machine capable of rapidly detecting by utilizing voiceprints

Technical Field

The invention relates to the technical field of batteries, in particular to an electrode slice punching machine for quickly detecting by utilizing voiceprints.

Background

In recent years, along with the improvement of the living standard of people, more and more electric appliances such as communication and digital products, electric tools, instruments and meters, electric toys and the like are used, the types of batteries matched with the electric appliances are also rapidly increased, at present, the batteries are widely used in all aspects of daily life of people, and along with the rapid expansion of the battery market, the requirements of people on the capacity and the performance of the batteries are also higher and higher. The battery consists of an electrode plate, electrolyte, a diaphragm and a shell. The core material electrode plate consists of an active material and a conductive matrix, and the conductive matrix plays roles of conducting current, uniformly distributing current potential on the surface of the electrode, and supporting and maintaining the active material. The appearance of the battery piece is different according to different battery design types. With the recent development of the battery industry, the battery design is becoming more and more sophisticated, and various requirements on battery plates such as verticality and size are also becoming more and more high.

At present, the bending process of the electrode slice is usually carried out by adopting a pneumatic press, a hydraulic press or a punching machine, abrasion and deviation are difficult to avoid after the machine works for a long time, which are difficult to find by naked eyes, the existing production process is usually to sample or fully check according to the manpower condition of enterprises after producing one batch, when the problem is detected, a large number of defective products are usually produced, so that great waste is caused, even a plurality of defective products are mixed in the genuine products, and the whole batch needs to be fully checked once, which is a burden of manpower resources.

The prior art adopts a visual positioning pneumatic press as provided by patent publication No. CN103522567A or an automatic calibration detection punching machine as provided by patent publication No. CN105904636B, and adopts mechanical visual or optical detection, so that the technology has the advantages of high equipment cost, difficult recovery cost in electrode slice production, severe environmental requirements, difficult achievement of the condition by most manufacturers, and difficult recovery cost if factory reconstruction is carried out, thus the electrode slice punching machine which is low in cost, convenient and capable of monitoring at any time is necessary.

Disclosure of Invention

The invention aims to provide an electrode slice punching machine for quickly detecting by utilizing voiceprints, which has the effect of conveniently and quickly detecting electrode slices.

The electrode slice punching machine capable of rapidly detecting by utilizing the voiceprint comprises a punching machine, a workbench and a pressing device, wherein the punching machine comprises a base and a punching head arranged on the base, the workbench is arranged on the base and is right below the punching head, a punching groove for bending an electrode slice is further formed in the workbench, the pressing device is used for pressing the workbench on the base, and a positioning device for calibrating the position of the punching head, a punching groove for punching the shape of the electrode slice and a voiceprint detection device for detecting the shape of the electrode slice are arranged on the workbench.

The invention further provides that the voiceprint detection device comprises a resonant cavity arranged in the workbench and a high-pressure airflow device arranged beside the workbench, and a first voiceprint sensor is arranged at the bottom of the punching groove.

The invention is further arranged that the resonant cavity comprises an air inlet channel connected with the high-pressure air flow device and a plurality of sounding holes arranged according to the shape of the processed electrode slice, and the sounding holes are different in shape.

The high-pressure airflow device comprises an air nozzle and an airflow hose arranged behind the air nozzle, a plurality of resonant cavities are arranged and correspond to electrode plates of different types respectively, and sounding holes arranged on each resonant cavity are arranged in a mode corresponding to one type of electrode plate.

The invention is further provided with the sound producing holes which are divided into straight holes and shrinkage cavities, wherein the straight holes are connected with the air inlet duct, the axial direction of each straight hole is perpendicular to the air inlet duct, the straight hole length of each sound producing hole is different, the shrinkage cavities are used for connecting the tail ends of the straight holes with the wall of the punching groove, and the opening size of each shrinkage cavity on the wall of the punching groove is the same and smaller than the sectional area of the straight hole.

By adopting the technical scheme, when the high-pressure air flows through the vertical cavity, the voiceprint with specific wavelength is emitted according to the geometric shape of the cavity, whether the tail end of the cavity is closed or not or how much the tail end of the cavity is closed can obviously influence the emitted sound, only one-time voiceprint recording is needed in the early stage, and the standard of verticality can be reached or not according to whether the electrode plate is attached to the side wall of the stamping groove or not through regular calibration, meanwhile, the arrangement of the sounding holes is related to the attached shape of the electrode plate on the stamping groove, tolerance allowance is reserved, if the pressure positions of the electrode plate are not aligned, the bending part of the electrode plate is offset, the sounding holes cannot be aligned, so that the sounding holes cannot be completely shielded, the influence on the sound is enough, the sound is not complicated in judgment, after the collected voiceprint is recorded, sound is recognized by only using the intensity of the specific frequency of the sound wave, sound Kong Zhengchang can be recognized, and the stamping head can press the electrode plate for a plurality of seconds to enable the electrode plate to be formed, and the time is enough for the high-pressure air flow device to impact the sounding for a plurality of times, and the error is eliminated by the accidental sound sensor.

The invention further provides that the punching machine is provided with a second acoustic sensor.

By adopting the technical scheme, the second voiceprint sensor is far enough away from the first voiceprint sensor so that the sound received by the resonant cavity is small enough, so that the sound received by the second voiceprint sensor mainly comes from environmental noise, and the environmental noise can be eliminated by comparing the signal received by the first voiceprint sensor with the signal received by the second voiceprint sensor.

The workbench is further arranged in the invention, the workbench comprises a workbench body and a base, the workbench body is arranged on the base, the workbench body and the base are fastened through bolts, the punching groove is arranged on the workbench body, and the edge of the workbench body is provided with a base column.

By adopting the technical scheme, the electrode plates which can be processed according to the need can be replaced by different table bodies so as to adapt to more models.

The invention further provides that the compressing device comprises a fastening screw rod arranged on the base, a compressing block arranged on the fastening screw rod and a compressing nut arranged on the fastening screw rod.

By adopting the technical scheme, a certain pressing force can be maintained, and errors caused by sliding of the workbench are avoided.

The positioning device comprises a positioning pile arranged on the stamping head and a positioning groove arranged on the table body, wherein the positioning pile can be in sliding fit with the positioning groove, the length of the positioning groove is 3-4mm longer than that of the positioning pile, and a bolt for fastening between the table body and the base is arranged in the positioning groove.

By adopting the technical scheme, the groove of the fastening bolt and the positioning groove are combined together to reduce the processing complexity of the table body.

The beneficial effects of the invention are as follows:

1. The invention detects the principle that the sound waves generated by the sound generating holes with the shape structure are different by utilizing the same air flow, and compares the sound waves generated by blowing the hole diameters of the punching electrode plates with the reference substances, thereby judging the quality of the products, detecting the products while producing, and carrying out assembly line operation, and has convenient and quick operation.

2. The invention can automatically detect through the instrument without manual comparison, abrasion and deviation are difficult to be avoided after the machine works for a long time, the abrasion and deviation are difficult to be found by naked eyes, the equipment can detect at any time, a large number of defective products or defective products can not be mixed, waste is greatly reduced, and the precision is high.

3. The equipment is simple, the cost is low, the inspection equipment is easy to purchase and install, the production cost is reduced, and the economic benefit is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an enlarged view of the invention at a.

FIG. 3 is a schematic view of the shape of the resonant cavity of the present invention.

FIG. 4 is a schematic perspective view of another angle of the present invention

Fig. 5 is a schematic view of the shape of a workpiece being processed in accordance with the present invention.

Fig. 6 is a resonant cavity in another embodiment of the invention.

In the figure, 1, a punching machine, 11, a punching head, 12, a base, 121, a second acoustic sensor, 2, a workbench, 21, a punching groove, 211, a first acoustic sensor, 22, a positioning device, 221, a positioning pile, 222, a positioning groove, 23, a table body, 231, a base column, 24, a base, 3, a pressing device, 31, a fastening screw, 32, a pressing block, 33, a pressing nut, 4, an acoustic detection device, 41, a resonant cavity, 411, an air inlet channel, 412, a sounding hole, 4121, a straight hole, 4122, a shrinkage hole, 42, a high-pressure air flow device, 421, an air nozzle, 422, an air flow hose, a1, a bending part, a2, a flute-shaped cavity, a3 and an acoustic generator.

Detailed Description

The technical scheme of the present invention will be clearly and completely described in connection with specific embodiments.

Example 1

In this embodiment, as shown in fig. 1, the invention comprises a punching machine 1, a workbench 2 and a pressing device 3, wherein a voiceprint detection device 4 is arranged on the workbench 2, the punching machine 1 is divided into a punching head 11 and a base 12, the punching head 11 is arranged on the base 12, the workbench 2 is arranged under the punching machine 1, and the pressing device 3 is used for pressing the workbench 2 on the base 12.

The workbench 2 is divided into a workbench body 23 and a base 24, the workbench body 23 and the base 24 are fastened through bolts, the shape of an electrode plate which can be bent according to requirements is replaced, the bolts connected between the workbench body 23 and the base 24 are arranged in positioning grooves 222, positioning piles 221 are arranged at the same positions on the stamping head 11, the positioning grooves 222 and the positioning piles 221 can be matched with each other, the deflection of the stamping head 11 is reduced, the positioning piles 221 are slightly shorter than the positioning grooves 222, and the lower parts of the positioning piles are used for accommodating the bolts.

In this embodiment, a punching slot 21 is provided on the table body 23, a limiting column for limiting the position of the electrode plate is provided beside the punching slot 21, during punching, the punching head 11 is put down, the punching head 11 is provided with a block matched with the punching slot 21 as shown in fig. 4, the electrode plate is bent to form a bending angle at a1 as shown in fig. 5, a voiceprint detection device 4 is provided in the table body 23, and the voiceprint detection device 4 comprises a resonant cavity 41 and a high-pressure air flow device 42. The resonant cavity 41 is disposed in the table body 23, and is shaped as shown in fig. 3, and is divided into an air inlet duct 411 and a sound producing hole 412, the air inlet duct 411 is inclined with respect to the inner wall of the punching slot 21, sound producing holes 412 with different lengths are conveniently disposed, the sound producing holes 412 are divided into straight holes 4121 and shrinkage holes 4122, the straight holes 4121 are communicated with the air inlet duct 411, the diameter and the length of each straight hole 4121 are different, the shrinkage holes 4122 are used for connecting the straight holes 4121 and the punching slot 21, one end of each shrinkage hole 4122 is identical to the diameter of the straight hole 4121, the other end is reduced to a specific diameter, the axes of the shrinkage holes 4122 and the straight holes 4121 are coincident, the axes of the shrinkage holes 4122 are perpendicular to the wall of the punching slot 21, and the sound producing holes 412 are impacted when the high-pressure air flow device 42 emits high-pressure air flow, because the shape and structure of each occurrence hole are different, sound-producing sounds are different, and therefore the sound-stripe detection can be implemented. The arrangement of the sounding holes 412 is approximately the same as the shape in the punching groove 21 after the electrode plate is bent as shown in fig. 5, when the electrode plate is bent, the electrode plate is not only bent downwards, but also slightly deflected left and right due to stress points, errors caused by the deflection of the electrode plate can be considered when the arrangement of the sounding holes 412 is arranged, the errors are within a tolerance range, the sounding holes 412 are completely shielded, the perpendicularity requirement of the electrode plate is higher, when the electrode plate is bent, the sounding holes 412 are completely sealed, so that the sounding holes 412 emit specific sounds, when the sound emitted by the sounding holes 412 is different from the preset sound, the sounding holes 412 are not completely shielded, or the perpendicularity of the electrode plate cannot meet the requirement, or the deflection of the bent part left and right exceeds the tolerance, and the electrode plate is a defective product in all cases, and the electrode plate can be rapidly detected.

A first voiceprint sensor 211 is disposed in the punched slot 21 for receiving sound identifying the soundhole 412, but inevitably will be disturbed by nearby equipment, so a second voiceprint sensor 121 is disposed on the base 12, the second voiceprint sensor 121 is sufficiently far from the punched hole that it is difficult to receive sound emitted from the soundhole 412, and environmental noise interference can be eliminated in comparison with the signals of the first voiceprint sensor 211 and the second voiceprint sensor 121.

The high pressure air flow device 42 is divided into an air nozzle 421 and an air flow hose 422, and in some embodiments, the punching slot 21 on the table body 23 can adapt to various electrode plates, so that a plurality of resonant cavities 41 are provided, so that the high pressure air flow device 42 needs to be switched between different resonant cavities 41, and this can be conveniently done by using the air flow hose 422,

The pressing device 3 comprises a fastening screw 31 arranged on the base 12, a pressing block 32 connected with the fastening screw 31 in a sliding manner, and a pressing nut 33 connected with the fastening screw 31 in a threaded manner, and can press the workbench 2 on the base 12.

The base column 231 is arranged on the table body 23 of the workbench 2 and is mainly used for dispersing pressure, and the resonance cavity 41 in the table body 23 is hollowed out, so that the strength can be reduced, therefore, the base column 231 is arranged on a relatively compact part, the pressure of the stamping head 11 on the workbench 2 is concentrated on the compact part, and the deformation of the resonance cavity 41 under the action of the pressure is reduced.

It should be noted that, the resonant cavity 41 is a cavity with an irregular shape and structure, and the conventional cross-sectional view is difficult to intuitively show the shape and structure, so fig. 3 is only a shape schematic diagram for describing the shape of the resonant cavity 41 conveniently, and is not a part actually present, while fig. 5 is a workpiece used for processing in the present embodiment of the present application, which only plays a role in describing the present application conveniently, is not a structure actually required to be protected, and therefore, the size and structure thereof are not described in detail, nor do the scheme and the protection scope described in the present embodiment and the present application are affected.

Example 2

The rest is the same as in embodiment 1, except that the resonant cavity 41 is modified to be a flute-shaped cavity a2 with the addition of the acoustic generator a3, as shown in fig. 6. The generator a3 is arranged outside the flute-shaped cavity, the structure of the generator a3 is similar to that of a flute, a plurality of flute-shaped cavities a2 are arranged in the table body 23, the generator is arranged outside each flute-shaped cavity a2, the holes on the flute-shaped cavities a2 just form the appearance of the electrode plate, the structure has the advantages of simple structure, low manufacturing degree and clear sounding, the defect that the sounding effect of a plurality of holes is the same, the position of the holes with wrong sounding is difficult to distinguish, the type of the problem of a workpiece is difficult to judge by directly using software, the assistance is needed, and the structure is suitable for small enterprises.

It should be noted that, because it is difficult to visually express the structure of a rectangular parallelepiped internal irregular cavity in a graphic manner, the flute-shaped cavity a2 is a schematic view for conveniently describing the shape of the cavity structure of the resonant cavity 41 in the stage 23, and is not a part of the actual existence.

It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

Claims

1. An electrode sheet punching machine (1) for rapid detection using voiceprint, comprising a punching machine (1), a workbench (2) and a pressing device (3), characterized in that: the punching machine (1) comprises a base (12) and a punching head (11) arranged on the base (12), the workbench (2) is arranged on the base (12) and directly below the punching head (11), the workbench (2) is also provided with a punching groove (21) for bending the electrode sheet, and the pressing device (3) is used to press the workbench (2) onto the base (12); the workbench (2) is provided with a positioning device (22) for calibrating the position of the punching head (11), a punching groove (21) for punching out the shape of the electrode sheet, and a voiceprint detection device (4) for detecting the morphology of the electrode sheet;

The voiceprint detection device (4) comprises a resonance cavity (41) arranged in the workbench (2) and a high-pressure airflow device (42) arranged next to the workbench (2), and a first voiceprint sensor (211) is arranged at the bottom of the stamping groove (21);

The resonance cavity (41) comprises an air inlet duct (411) connected to a high-pressure airflow device (42), and a plurality of sound-generating holes (412) arranged according to the shape of the electrode sheet being processed, wherein the shapes of the sound-generating holes (412) are different;

The high-pressure airflow device (42) comprises an air nozzle (421) and an airflow hose (422) arranged behind the air nozzle (421); a plurality of resonance cavities (41) are provided, each corresponding to an electrode sheet of different models; and the arrangement of the sound-emitting holes (412) provided on each resonance cavity (41) corresponds to an electrode sheet of one model;

A limiting column for limiting the position of the electrode sheet is provided next to the punching groove (21).

2. An electrode sheet punching machine (1) using voiceprint rapid detection according to claim 1, characterized in that: the sound hole (412) is divided into a straight hole (4121) and a shrinkage hole (4122), the straight hole (4121) is connected to the air inlet duct (411), the diameter and length of the straight hole (4121) of each sound hole (412) are different, the shrinkage hole (4122) is used to connect the end of the straight hole (4121) and the wall of the stamping groove (21), and the axis of the shrinkage hole (4122) is perpendicular to the wall of the stamping groove (21), and the opening size of each shrinkage hole (4122) on the wall of the stamping groove (21) is the same and is smaller than the cross-sectional area of the straight hole (4121).

3. The electrode sheet punching machine (1) using voiceprint rapid detection according to claim 1, characterized in that a second voiceprint sensor (121) is provided on the punching machine (1).

4. An electrode sheet punching machine (1) using voiceprint rapid detection according to claim 1, characterized in that: the workbench (2) includes a table body (23) and a base (24), the table body (23) is arranged on the base (24), the table body (23) and the base (24) are fastened by bolts, the punching groove (21) is arranged on the table body (23), and a base column (231) is arranged on the edge of the table body (23).

5. The electrode sheet punching machine (1) using voiceprint rapid detection according to claim 3 is characterized in that: the clamping device (3) includes a fastening screw (31) arranged on the base (12), a clamping block (32) arranged on the fastening screw (31), and a clamping nut (33) arranged on the fastening screw (31).

6. An electrode sheet punching machine (1) using voiceprint rapid detection according to claim 3, characterized in that: the positioning device (22) includes a positioning pile (221) arranged on the punching head (11) and a positioning groove (222) arranged on the platform (23), the positioning pile (221) can be slidably matched with the positioning groove (222), the length of the positioning groove (222) is 3-4 mm longer than the length of the positioning pile (221), and the bolts for fastening between the platform (23) and the base (24) are arranged in the positioning groove (222).