CN216177721U - Pressing mechanism and welding tool - Google Patents

Abstract

The application discloses hold-down mechanism and welding machine frock. The hold-down mechanism includes: the pressing part is provided with a pressing nozzle along the vertical direction; and the detection end of the displacement sensing device abuts against the pressure nozzle so that the detection end of the displacement sensing device detects and reads the displacement of the pressure nozzle. The hold-down mechanism of this application embodiment has displacement sensing device through the butt on pressing the mouth, displacement sensing device can real-time sensing to the displacement distance of pressing the mouth, and then judge according to the displacement distance of sensing and compress tightly the condition, guaranteed to press the pressure of pressing the mouth and establish the condition and carry out real-time supervision, thereby compress tightly effectual just can carry out welding on next step, and compress tightly in-process the problem then can in time discover and solve, guaranteed to compress tightly the effect and for follow-up welding preparation, and then guaranteed the quality of product.

Description

Pressing mechanism and welding tool

Technical Field

The application relates to the technical field of battery production equipment, in particular to a pressing mechanism and a welding tool.

Background

At present, before welding the pole of the bar piece and the battery core, the bar piece and the pole need to be compressed tightly to ensure the welding effect.

In the prior art, an integrated pressure nozzle cover plate mechanism is mainly adopted as a compressing mechanism to compress the pole of the bus bar and the battery cell, but the plane of the pole of the battery cell is uneven, and the problems of error and the like exist in the installation process of a fixture tool and the integrated pressure nozzle cover plate mechanism, so that the problem of uneven stress of the pole often occurs in the compressing process, the pressing force of part of the pole is too large, the bus bar deforms, the pressing force of part of the pole is insufficient, and the defects of welding seam collapse and the like can occur during welding.

Therefore, how to provide a pressing mechanism capable of monitoring a pressing state becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of above-mentioned problem, the application provides a hold-down mechanism and welding frock, monitors the process of compressing tightly through displacement sensing device, reduces the problem that exists among the process of compressing tightly, prevents that follow-up welding from appearing the problem and the product quality problem that leads to.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

in a first aspect, the present application provides a compression mechanism comprising: the pressing part is provided with a pressing nozzle along the vertical direction;

and the detection end of the displacement sensing device abuts against the pressure nozzle so that the detection end of the displacement sensing device detects and reads the moving distance of the pressure nozzle.

In the technical scheme of this application embodiment, hold-down mechanism is including compressing tightly portion and displacement sensing device, it has pressure mouth to compress tightly the portion, pressure mouth presses and establishes on electric core, so that piece and the utmost point post of electric core compress tightly, thereby prepare for follow-up welding, and displacement sensing device sets up on pressing the mouth, displacement sensing device's sense end butt is on pressing the mouth, thereby when pressing the mouth and pressing when establishing piece and utmost point post in-process and producing the displacement, displacement sensing device can real-time sensing to the displacement distance of pressing the mouth, and then the staff judges according to the displacement distance and compresses tightly the condition, guaranteed to press the pressure of mouth and establish the condition and carry out real-time supervision, thereby compress tightly effectual just can carry out welding on next step, and can in time discover and solve compressing tightly the in-process problem then, guaranteed to compress tightly the effect and for follow-up welding preparation, and then guaranteed the quality of product.

In some embodiments, the pressing part further comprises: the pressing plate, the clamp plate with the pressure mouth sets up along vertical direction interval, the pressure mouth with clamp plate telescopic connection, clamp plate fixed connection displacement sensing device, external drive the clamp plate, the clamp plate drives the pressure mouth is relative the clamp plate produces the displacement along vertical direction. The pressing plate is provided with at least one pressing nozzle which is in sliding connection with the pressing plate, so that when the pressing mechanism is pressed by external force, the pressing plate and the pressing nozzle move towards the electric core along the vertical direction, the pressing nozzle contacts the bus bar, the pressing plate is continuously pressed by the external force, at the moment, the pressing nozzle is in contact with the bus bar and is in telescopic connection with the pressing plate, the pressing nozzle can receive the reaction force from the bus bar, the pressing nozzle moves towards the pressing plate in a small amplitude, so that displacement is generated, the displacement sensing device is fixed with the pressing plate, the detection end of the displacement sensing device is abutted against the pressing nozzle, when the pressing nozzle generates displacement relative to the pressing plate, the displacement sensing device can sense the displacement of the pressing nozzle, the pressing condition of the pressing mechanism on the bus bar and the electric core is judged according to the displacement, the real-time monitoring on the pressing condition is ensured, and problems can be timely found and solved in the pressing process, the pressing effect is guaranteed, preparation is made for subsequent welding, and the quality of products is further guaranteed.

In some embodiments, the pressing part further comprises: the telescopic connecting device extends along the vertical direction to form, the first end of the telescopic connecting device is fixedly connected with the pressing plate, and the second end of the telescopic connecting device is connected with the pressing nozzle in a telescopic mode. The pressing portion comprises a pressing plate, a telescopic connecting device and a pressing nozzle, the telescopic connecting device is arranged between the pressing nozzle and the pressing plate, one end of the telescopic connecting device is fixedly connected with the pressing plate, the other end of the telescopic connecting device is connected with the pressing nozzle in a telescopic mode, when external force is pressed on the pressing plate, the telescopic connecting device can enable the pressing nozzle to be pressed to establish an electric core, the pressing nozzle stretches to the pressing plate direction, the pressing nozzle moves relative to the pressing plate, the displacement sensing device can sense the displacement of the pressing nozzle relative to the pressing plate, the pressing mechanism is judged to press the electric core according to the displacement, real-time monitoring on the pressing condition is guaranteed, problems can be found and solved in time in the pressing process, the pressing effect is guaranteed, preparation is made for follow-up welding, and the quality of products is guaranteed.

In some embodiments, the retractable connection apparatus comprises: the connecting rod extends along the vertical direction, the first end of the connecting rod is fixedly connected with the pressure plate, and the second end of the connecting rod is connected with the pressure nozzle in a sliding manner; the elastic piece is sleeved outside the connecting rod, and two ends of the elastic piece are respectively abutted against the pressing plate and the pressing nozzle. Scalable connecting device includes connecting rod and elastic component, and the both ends of elastic component butt respectively is on pressure mouth and clamp plate, thereby the elastic component can transmit the power of clamp plate to pressing the mouth, thereby press the mouth to provide pressure to the utmost point post of piece and electric core, realize compressing tightly of the utmost point post of electric core and piece, in addition, still be provided with the connecting rod between clamp plate and the pressure mouth, the elastic component cover is established outside the connecting rod, thereby the connecting rod provides the support for the elastic component, guarantee that the elastic component is pressing and establish the in-process and not take place the bending. And the one end and the clamp plate fixed connection of connecting rod, the other end and pressure mouth sliding connection, thereby the connecting rod plays supporting role to clamp plate and pressure mouth, and the pressure mouth when pressure is established to the piece, because connecting rod and pressure mouth sliding connection, thereby the pressure mouth can be by the effect of reaction force towards the clamp plate direction production displacement, realize the flexible of the relative clamp plate of pressure mouth, thereby hold-down mechanism when accomplishing the compressing tightly of the utmost point post of piece and electric core, the pressure mouth also takes place the displacement according to the degree that compresses tightly.

In some embodiments, the connecting rod is a T-shaped structure, and comprises a rod body parallel to the vertical direction and a rod cap arranged at one end of the rod body; the one side that the pressure nozzle is close to the clamp plate is provided with the opening with body of rod looks adaptation to and be provided with in the opening with the cavity of pole cap diameter looks adaptation, the cavity has the predetermined degree of depth along vertical direction, the pole cap set up in the cavity, the body of rod stretches out the opening. The connecting rod is T type structure, first end and clamp plate fixed connection, and the second end has the pole cap of T type structure, and the pole cap stretches into in the cavity of pressure mouth, and the cavity has the degree of depth of predetermineeing along vertical direction to the pressure mouth can be followed the connecting rod and had the removal of certain distance to the clamp plate direction.

In some embodiments, a through hole is arranged on the pressure plate, and the detection end of the displacement sensing device passes through the through hole and abuts against the pressure nozzle; the clamp plate orientation the one side of pressure mouth have with scalable connecting device looks adaptation recess, scalable connecting device's first end stretch into in the recess with clamp plate fixed connection. The displacement sensing device passes through the through hole on the clamp plate and then butts in pressing the mouth to the displacement distance to pressing the mouth carries out the sensing, and scalable connecting device's first end stretch into in the recess of clamp plate with clamp plate fixed connection, then the movable distance of pressing the mouth increases, thereby hold-down mechanism establishes the stroke also bigger to the pressure of electric core, can provide bigger pressure for electric core, satisfies the demand of more conditions.

In some embodiments, further comprising: and one end of the fixing part is fixedly connected with the displacement sensing device, and the other end of the fixing part is fixedly connected with the pressing plate. Thereby it is fixed with the clamp plate to be fixed with displacement sensing device through the fixed part, and fixing device sets up the one side of keeping away from the pressure mouth at the clamp plate to make things convenient for the setting of fixed part, can not take place to interfere with other devices.

In some embodiments, the pressure nozzle is a structure with a wide upper part and a narrow lower part, a through welding opening is arranged on the pressure nozzle, the welding opening is of a funnel-shaped structure, the diameter of the welding opening close to one side of the pressure plate is larger than the diameter of the welding opening far away from one side of the pressure plate, and a through welding hole corresponding to the welding opening is arranged on the pressure plate. The pressure nozzle is close to clamp plate one side wide, and it is narrow to keep away from clamp plate one side, and is provided with the welding mouth on the pressure nozzle, and the welding mouth can set up to hopper-shaped structure, makes things convenient for penetrating into of laser for laser can not take place to interfere at penetrating into the in-process, is provided with the welding hole on the position that clamp plate and welding mouth correspond, thereby sees through welding hole and welding mouth and just can weld pressing the piece of establishing the completion with utmost point post.

In some embodiments, in a second aspect, the present application provides a welding tool, including the pressing mechanism in the above embodiments;

the laser emitted by the vibrating mirror penetrates through the welding hole and the welding port of the pressing mechanism to weld the pole pieces and the poles, and the vibrating mirror emits the laser with a preset quantity at each time.

In the technical scheme of this application embodiment, the welding frock includes hold-down mechanism and the mirror that shakes, and hold-down mechanism shakes the mirror transmission laser and passes after accomplishing compressing tightly of piece and the utmost point post of electric core the welding hole and the welding mouth of hold-down mechanism carry out the welding of piece and utmost point post, and shake the mirror and can launch the laser of predetermineeing quantity in proper order at every turn and weld in proper order to the electric core of predetermineeing quantity.

In some embodiments, the number of the pressing nozzles of the pressing mechanism is the same as the number of the lasers emitted by the galvanometer in sequence each time, that is, the number of the pressing nozzles is the same as the number of the bars and the poles welded by the galvanometer at a time. The pressing mechanism adopts the pressing nozzle combination with fixed quantity according to the quantity of the vibrating mirror single-time welded polar columns, so that the pressing device adopts the small-unit pressing mechanism, the position of the pressing device is moved to perform unit welding, only a small quantity of polar columns need to be pressed once, the influence of inconsistent pressing force caused by uneven flatness of the polar columns of the battery cell can be effectively reduced, the pressing plate area of the small-unit pressing mechanism is small, the processing precision and the material strength are easily guaranteed, and the pressing mechanism is simple and convenient to install and adjust.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 is a cross-sectional view of one of the hold-down mechanisms of some embodiments of the present application;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic diagram of a hold-down mechanism according to some embodiments of the present application;

FIG. 4 is a schematic structural view of a welding tool according to some embodiments of the present application;

the reference numbers in the detailed description are as follows:

welding tool 100, hold-down mechanism 1, pressure nozzle 11, clamp plate 12, scalable connecting device 13, connecting rod 131, the body of rod 1311, pole cap 1312, elastic component 132, displacement sensing device 14, fixed part 15, galvanometer 2, electric core 3.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms of art "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right" and "vertical" are used for the sake of brevity "

The references to "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are based on the orientation or positional relationship shown in the drawings and are only for convenience in describing and simplifying the description of the embodiments of the present application and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, in the welding process, in order to obtain a good welding effect, the pole of the bus bar and the pole of the battery cell need to be attached and compressed.

The inventor notices that the current mode of compressing tightly mainly adopts integrated form pressure nozzle apron mechanism, and pressure nozzle quantity is arranged according to the quantity of welding electric core utmost point post, has integrateed a plurality of welding pressure nozzles on a mounting panel, along with module and energy density demand are higher and higher, and unitized electric core quantity is more and more, and hold-down mechanism does more and more greatly, and is just higher to the plane degree and the material strength requirement of clamp plate. And the utmost point post plane degree of electric core after the module is in groups has the height not smooth, has the plane degree error when adding anchor clamps frock and pressure mouth installation, and this just leads to hold-down mechanism at the in-process that compresses tightly, and every utmost point post atress is inhomogeneous, and partial utmost point post packing force is too big, and the piece warp, and partial utmost point post packing force is not enough, and welding seam when can leading to follow-up welding collapses defect such as down. And spatters such as welding slag are easily generated in the welding process, the spatters are easily adhered to a guide rod of the pressing mechanism, so that the pressing nozzle is blocked, the pressing nozzle cannot be effectively pressed, and if no effective monitoring means is provided, the module welding quality problem is easily caused once the abnormal state occurs, so that the product is scrapped.

In order to facilitate monitoring of the pressing condition, the applicant has found that a sensing device can be provided to monitor the pressing height of the pressing nozzle in real time.

Based on above consideration, in order to solve and establish difficult discovery that the in-process goes wrong at the pressure, cause follow-up welding and product problem of quality to appear easily, the inventor is through deep research, hold-down mechanism has been designed, through butt displacement sensing device on pressing the mouth, carry out sensing and reading to the displacement of pressing the mouth, thereby real time monitoring hold-down mechanism compresses tightly, prevent to press and establish the in-process and take place to compress tightly undersize or too big scheduling problem, and can adjust in real time the degree of compressing tightly according to the real time monitoring condition, the compressing tightly of the utmost point post of piece and electric core has been guaranteed, prepare for follow-up welding.

Compress tightly the utmost point post of piece and electric core through such hold-down mechanism, because displacement sensing device's setting, when the utmost point post of piece and electric core is compressed tightly to needs piece, remove hold-down mechanism to electric core top through triaxial power platform, and the back is pressed along vertical direction and is established hold-down mechanism, press the mouth to press and establish in electric core top, press the mouth to press and establish electric core and can produce the displacement, displacement sensing device can real-time sensing to the displacement distance of pressing the mouth, and then the staff judges according to the displacement distance and presses and establishes the condition, guaranteed to press the pressure of pressing the mouth and establish the condition and carry out real-time supervision, thereby compressing tightly in-process problem appearance and can in time discovering and solving, guaranteed to compress tightly the effect and prepare for follow-up welding, and then guaranteed the quality of product.

When pressing through such hold-down mechanism to the utmost point post of piece and electric core and establishing, pressure sensing device can the sensing with read the displacement value, this displacement value can directly read, also can send to the controller, if the displacement value is in predetermineeing the within range then carry out welding operation on next step, if not in predetermineeing the within range, then report to the police, can prevent to press to establish improper piece and utmost point post like this and weld the product quality problem that leads to, scrap even.

In the pressing process, the displacement value sensed and read by the pressure sensing device can be observed, so that the pressing is stopped when the displacement value generated by the pressing is immediately overlarge, the pressing strength is increased when the pressing displacement is not achieved for a long time, and the situation of improper pressing can be avoided.

The pressing mechanism disclosed by the embodiment of the application can be used for battery production. The pressing mechanism disclosed by the application can be used for pressing the bar piece and the pole in the production process of the battery, so that the welding effect of the follow-up bar piece and the pole can meet the quality requirement of a product.

For convenience of description, the following embodiments will be described by taking a welding tool 100 according to an embodiment of the present application as an example.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a pressing mechanism according to an embodiment of the present application, and fig. 2 is a partially enlarged view of a portion a in fig. 1. The pressing mechanism 1 comprises a pressing part and a displacement sensing device 14, the pressing part comprises a pressing nozzle 11, the detection end of the displacement sensing device 14 is abutted against the pressing nozzle 11, so that, when the pressure nozzle 11 is relatively displaced, the displacement sensing device 14 can sense the displacement of the pressure nozzle 11, wherein, the displacement sensing device 14 is a displacement sensor and at least has one pressure nozzle 11, as shown in fig. 3, 4 pressure nozzles 11 are provided, each pressure nozzle 11 is abutted with one displacement sensor, namely, the pressing mechanism 1 simultaneously presses four electric cores 3, senses whether problems occur in each pressing process, if problems occur in the pressing process, for example, the pressing process is too large or too small, the displacement value sensed by the displacement sensor is not in the preset range, at the moment, an alarm is given out, and after the pressing process is completed, and if the displacement value sensed by the displacement sensor is within the preset range, the next welding operation can be carried out. Thereby can judge through displacement sensing device 14's setting and compress tightly the state, prevent to compress tightly that the in-process goes wrong the piece and the further welding of utmost point post, and then prevent to produce the product that has a problem.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a welding tool 100 according to some embodiments of the present disclosure. The welding tool 100 is used for welding a pole of a bar sheet and an electric core 3 and is applied to a battery production system, the welding tool 100 comprises a pressing mechanism 1, a vibrating mirror 2, a battery positioning device and a driving device, the battery positioning device is used for accommodating and positioning a battery, the battery comprises a plurality of electric cores 3, each electric core 3 comprises a pole, the welding tool 100 is used for welding the bar sheet and the pole on the electric core, the pressing mechanism 1 is positioned above the battery and comprises a pressing part and a displacement sensing device 14, the pressing part comprises at least one pressing nozzle 11, each pressing nozzle 11 corresponds to one electric core 3, the driving device is arranged above the pressing mechanism or is connected with the pressing mechanism 1 and is used for driving or pressing the pressing mechanism 1 to press the electric core 3 so as to press the bar sheet and the pole, the pressing structure is also provided with a welding port and a welding hole, laser emitted by the vibrating mirror 2 penetrates through the welding port and the welding hole to weld the bar sheet and the pole of the electric core 3, thereby accomplish the welding to the piece and utmost point post through welding frock 100.

When carrying out the welding machine through welding frock 100, hold-down mechanism 1 and mirror 2 can be driven to the adjacent other 3 tops of a set of electric core by drive arrangement and compress tightly and weld after accomplishing compressing tightly and the welding of a set of piece and utmost point post of the number that corresponds to accomplish all electric cores 3 that need compress tightly and weld in proper order.

According to some embodiments of the present application, referring to fig. 1, and referring to fig. 2 and 3 further, the present application provides a pressing mechanism 1, where the pressing mechanism 1 includes a pressing portion and a displacement sensing device 14, the pressing portion is provided with a pressing nozzle 11 along a vertical direction, a detection end of the displacement sensing device 14 abuts against the pressing nozzle 11, so that when the pressing nozzle 11 displaces during the pressing process, the displacement sensing device 14 can sense a moving distance of the pressing nozzle 11 due to the fact that the detection end abuts against the pressing nozzle 11, and the moving distance of the pressing nozzle 11 can represent a pressing state of the pressing mechanism 1 on an electric core 3, so that according to a displacement value detected and read by the displacement sensing device 14, it can be seen whether the electric core 3 pressed by the pressing nozzle 11 meets a subsequent welding requirement, thereby avoiding the electric core 3 that does not meet the welding condition in the pressing situation from entering a next welding procedure, the appearance of problem products is avoided.

The pressure nozzle 11 is pressed on the electric core 3, so as to conveniently press the electric core 3, the displacement sensing device 14 is a device for sensing the displacement change of the pressure nozzle 11, generally a displacement sensor, the detection end of the displacement sensor is a telescopic structure, the displacement sensor is abutted against one surface of the pressure nozzle 11, which is away from the pressed electric core 3, so that the detection end of the displacement sensor can be stretched along with the up-and-down movement of the pressure nozzle 11, the stretching length is the moving displacement of the pressure nozzle 11, the displacement sensor can detect the stretching direction and the length of the detection end of the displacement sensor and read or send the stretching direction and the length, the displacement sensor can send the read displacement value to the controller, the controller compares the displacement value with the preset value, if the displacement value is within the range of the preset value, the next welding operation can be controlled, and if the displacement value is not within the range of the preset displacement value, the alarm is controlled to generate an alarm and the control does not proceed to the next welding operation.

The vertical direction is the direction indicated by an arrow a in fig. 1 and is also the compressing direction of the compressing mechanism 1 in the present application, and the pressure nozzle 11 in the compressing portion is arranged along the vertical direction, so as to compress the pole of the cell 3 and the bus bar.

Through there being displacement sensing device 14 butt on pressing mouth 11, thereby when pressing mouth 11 to press and establish 3 in-process production displacements of electric core, displacement sensing device 14 can real-time sensing to the displacement distance of pressing mouth 11, and then judge according to the displacement distance that the pressure sticiss and establish the condition, guaranteed to press the pressure of pressing mouth 11 and establish the condition and carry out real-time supervision, thereby compress tightly effectual just can carry out welding on next step, and can in time discover and solve compressing tightly then of in-process going problem, guaranteed to compress tightly the effect and prepare for follow-up welding, and then guaranteed the quality of product.

According to some embodiments of the present application, optionally, please continue to refer to fig. 1 to fig. 3, the pressing portion includes a pressing nozzle 11 and a pressing plate 12, the pressing plate 12 and the pressing nozzle 11 are disposed at an interval along a vertical direction, the pressing nozzle 11 is telescopically connected to the pressing plate 12, so that when the pressing mechanism 1 presses the electrical core 3, an external force is pressed on the pressing plate 12, the pressing nozzle 11 is driven by the pressing plate 12 to press the electrical core 3 and simultaneously generate a relative displacement with respect to the pressing plate 12, and the displacement sensing device 14 is fixedly connected to the pressing plate 12, and a detection end of the displacement sensing device 14 abuts against the pressing nozzle 11.

The clamp plate 12 is the structure of setting in pressure mouth 11 top, and clamp plate 12 is planar structure to make things convenient for external force to press and establish or drive clamp plate 12, planar structure's clamp plate 12 makes each position atress of clamp plate 12 even, and then provides each pressure mouth 11 of telescopic connection with it that the power is also even, has guaranteed each pressure mouth 11's the atress condition.

According to some embodiments of the present application, optionally, please continue to refer to fig. 2 and fig. 3, the pressing portion includes a pressing plate 12 and a pressing nozzle 11, the pressing nozzle 11 is telescopically connected to the pressing plate 12 through the setting of the pressing plate 12, the electric core 3 can be set by pressing, and at the same time, the small-amplitude displacement towards the pressing plate 12 is provided, so that the small-amplitude displacement of the pressing nozzle 11 is detected through the displacement sensing device 14, the pressing condition of the pressing mechanism 1 on the electric core 3 is determined according to the displacement, the real-time monitoring of the pressing condition is ensured, so that problems occurring in the pressing process can be timely found and solved, the pressing effect is ensured, the preparation for subsequent welding is made, and the quality of the product is ensured.

According to some embodiments of the application, the pressing portion further comprises a telescopic connecting device 13, the telescopic connecting device 13 is located between the pressing plate 12 and the pressing nozzle 11, the telescopic connecting device 13 is formed by extending in the vertical direction, the telescopic connecting device 13 is fixedly connected with the pressing plate 12 and is in telescopic connection with the pressing nozzle 11, and therefore the pressing nozzle 11 and the pressing plate 12 are in telescopic connection in the vertical direction through the arrangement of the telescopic connecting device 13.

Scalable connecting device 13 sets up between clamp plate 12 and pressure nozzle 11, and scalable connecting device 13 sets up along vertical direction, and scalable connecting device 13 can be a plurality of, and a plurality of scalable connecting device 13 symmetry sets up to provide the transmission of power and realize the flexible of pressure nozzle 11 for clamp plate 12 and pressure nozzle 11 jointly. Preferably, scalable connecting device 13 is four, and four scalable connecting device 13 symmetries set up around displacement sensing device 14 to make clamp plate 12 more even to the transmission of pressure nozzle 11 power, further guaranteed that pressure nozzle 11 establishes the power more evenly to the pressure of electric core 3, make electric core 3 compress tightly the effect better.

The pressing part comprises a pressing plate 12, a pressing nozzle 11 and a telescopic connecting device 13, the telescopic connecting device 13 is arranged between the pressing plate 12 and the pressing nozzle 11, so that the force of the pressing plate 12 is transmitted to the pressing nozzle 11 through the driving of the telescopic connecting device 13, and the telescopic connecting device 13 is fixedly connected with the pressing plate 12 and is telescopically connected with the pressing nozzle 11, so that when an external force is pressed on the pressing plate 12, the telescopic connecting device 13 can enable the pressing nozzle 11 to stretch towards the pressing plate 12 direction while pressing the electric core 3, so that the movement of the pressing nozzle 11 is realized, the displacement sensing device 14 can sense the displacement of the pressing nozzle 11, so that the pressing condition of the pressing mechanism 1 on the electric core 3 is judged according to the displacement, the real-time monitoring on the pressing condition is ensured, the problem can be timely found and solved in the pressing process, the pressing effect is ensured, and the preparation for the subsequent welding is made, thereby ensuring the quality of the product.

According to some embodiments of the present application, optionally, referring to fig. 2, as shown in fig. 2, the retractable connecting device 13 includes a connecting rod 131 and an elastic member 132, the connecting rod 131 and the elastic member 132 are both formed by extending in a vertical direction, one end of the connecting rod 131 is fixedly connected to the pressure plate 12, the other end of the connecting rod 131 is slidably connected to the pressure nozzle 11, the elastic member 132 is sleeved outside the connecting rod 131, and two ends of the elastic member 132 abut against the pressure plate 12 and the pressure nozzle 11, respectively.

The two ends of the elastic member 132 are respectively abutted against the pressure plate 12 and the pressure nozzle 11 means that the elastic member 132 is arranged between the pressure nozzle 11 and the pressure plate 12, one end of the elastic member 132 is abutted against one surface of the pressure plate 12 close to the pressure nozzle 11, and the other end of the elastic member 132 is abutted against one surface of the pressure nozzle 11 close to the pressure plate 12. Preferably, the elastic member 132 is a spring.

Scalable connecting device 13 includes connecting rod 131 and elastic component 132, the both ends of elastic component 132 butt respectively on pressure mouth 11 and clamp plate 12, thereby elastic component 132 can transmit the power of clamp plate 12 to pressure mouth 11, thereby pressure mouth 11 provides pressure to electric core 3, realize compressing tightly of utmost point post and piece, in addition, clamp plate 12 still is provided with connecting rod 131 with pressing between the mouth 11, elastic component 132 cover is established outside connecting rod 131, thereby connecting rod 131 provides the support for elastic component 132, guarantee that elastic component 132 is pressing and is establishing the in-process and not take place the bending. And the one end and the clamp plate 12 fixed connection of connecting rod 131, the other end and pressure mouth 11 sliding connection, thereby connecting rod 131 plays supporting role to clamp plate 12 and pressure mouth 11, and pressure mouth 11 when pressing and establishing to electric core 3 on, because connecting rod 131 and pressure mouth 11 sliding connection, thereby pressure mouth 11 can produce the displacement by the effect of reaction force towards the 12 directions of clamp plate, realize the flexible of the relative clamp plate 12 of pressure mouth 11, thereby hold-down mechanism 1 is when accomplishing the compressing tightly of the utmost point post of piece and electric core 3, pressure mouth 11 also takes place the displacement according to the degree that compresses tightly.

According to some embodiments of the present application, optionally, referring to fig. 2, as shown in the drawing, the connection rod 131 is a T-shaped structure, the connection rod 131 includes a rod body 1311 formed by extending in a vertical direction and a rod cap 1312 disposed at one end of the rod body 1311, an opening adapted to the rod body 1311 is disposed on a surface of the pressure nozzle 11 close to the pressure plate 12, and a cavity adapted to a diameter of the rod cap 1312 is disposed in the opening, the cavity has a predetermined depth in the vertical direction, the rod cap 1312 is disposed in the cavity, and the rod body 1311 protrudes out of the opening.

The T-shaped connecting rod 131 comprises a rod body 1311 and a rod cap 1312, and the rod cap 1312 is arranged to enable the second end of the connecting rod 131 to be inserted into the opening of the pressure nozzle 11 and abut against the inside of the pressure nozzle 11, so that the pressure plate 12 and the pressure nozzle 11 can be slidably connected without being separated.

Scalable connecting device 13 includes connecting rod 131 and elastic component 132, and the one end and the clamp plate 12 fixed connection of connecting rod 131, the other end and pressure mouth 11 sliding connection, thereby pressure mouth 11 is pressing when establishing to electric core 3 on, can be because reaction force produces the displacement towards clamp plate 12 direction, and still be provided with elastic component 132 between clamp plate 12 and the pressure mouth 11, elastic component 132 both ends butt respectively on clamp plate 12 and pressure mouth 11, thereby can be when pressure mouth 11 moves towards clamp plate 12 under the effect of reaction force, to pressure mouth 11 production pressure, make pressure mouth 11 slow down towards the speed of clamp plate 12 motion, thereby produce pressure to electric core 3, realize the flexible connection of pressure mouth 11 relative clamp plate 12, thereby hold-down mechanism 1 is when accomplishing the compressing tightly of the piece of electric core 3 and utmost point post, pressure mouth 11 also takes place the displacement according to the degree that compresses tightly.

According to some embodiments of the present application, optionally, a through hole is provided on the pressure plate 12, and the detection end of the displacement sensing device 14 passes through the through hole and abuts against the pressure nozzle 11; one side of the pressing plate 12 facing the pressing nozzle 11 is provided with a groove matched with the telescopic connecting device 13, and the first end of the telescopic connecting device 13 extends into the groove and is fixedly connected with the pressing plate 12.

The pressing plate 12 is provided with a through hole, and the detection end of the displacement sensing device 14 passes through the through hole on the pressing plate 12, then abuts against the pressure nozzle 11, and passes through the displacement sensing device 14 on the pressing plate 12 to be fixedly connected with the pressing plate 12. In addition, a groove is formed in one surface, facing the pressure nozzle 11, of the pressure plate 12, and the groove is matched with the telescopic connecting device 13, so that the telescopic connecting device 13 extends into the groove, and the telescopic distance between the pressure plate 12 and the pressure nozzle 11 is increased equivalently.

Displacement sensing device 14 passes behind the through-hole on clamp plate 12 butt in pressure mouth 11 to the displacement to pressure mouth 11 carries out the sensing, and scalable connecting device 13's first end stretch into in clamp plate 12's the recess with clamp plate 12 fixed connection, then the movable distance of pressure mouth 11 increases, thereby hold-down mechanism 1 establishes the stroke also bigger to electric core 3's pressure, can provide bigger pressure for electric core 3, satisfies the demand of more conditions.

According to some embodiments of the present application, optionally, please refer to fig. 3, further including: and one end of the fixing part 15 is fixedly connected with the displacement sensing device 14, and the other end of the fixing part 15 is fixedly connected with the pressing plate 12.

Fixed part 15 is with displacement sensing device 14 and clamp plate 12 fixed connection, fixed part 15 is located clamp plate 12 and keeps away from the one side of pressure mouth 11 to convenient fixed and prevent to take place to interfere with other parts, in addition, fixed part 15 is the bending structure, the bending structure includes the first limit parallel with clamp plate 12, the second limit perpendicular and connected with first limit, and the third limit perpendicular and connected with the second limit, the one end and clamp plate 12 fixed connection on the second limit are kept away from to the first limit, the one end and the displacement sensing device 14 fixed connection on the second limit are kept away from to the third limit.

Through the setting of fixed part 15 for displacement sensing device 14 is fixed with clamp plate 12, and fixing device sets up in the clamp plate 12 and keeps away from one side of pressure nozzle 11, thereby makes things convenient for the setting of fixed part 15, can not take place to interfere with other devices.

According to some embodiments of the present application, optionally, please refer to fig. 2 again, as shown in the figure, the pressure nozzle 11 is a structure with a wide top and a narrow bottom, a through welding opening is provided on the pressure nozzle 11, the welding opening is a funnel-shaped structure, a diameter of the welding opening close to one side of the pressure plate is larger than a diameter of the side far away from the pressure plate, and a through welding hole corresponding to the welding opening is provided on the pressure plate 12.

Be provided with corresponding welding mouth and welding hole on pressure nozzle 11 and the clamp plate 12 respectively, the welding mouth can set up to hopper-shaped structure, makes things convenient for penetrating of laser for laser can not take place to interfere at the in-process that penetrates, so that laser passes welding mouth and welding hole and welds to the piece of a crust that has compressed tightly and utmost point post. And the welding hole and the welding port are located at the center of the pressing plate 12 and the pressure nozzle 11.

The pressure nozzle 11 is wide near one side of the pressure plate 12, narrow far away one side of the pressure plate 12, and provided with a welding port on the pressure nozzle 11, and the pressure plate 12 is provided with a welding hole on the position corresponding to the welding port, thereby welding the bus bar piece and the pole post which are completed by pressing through the welding hole and the welding port.

According to some embodiments of the present application, referring to fig. 1 to 3, the present application provides a pressing device, which includes a pressing plate 12, a pressing nozzle 11, a connecting rod 131, a spring and a displacement sensor, wherein the pressing plate 12 and the pressing nozzle 11 are vertically spaced, the displacement sensor passes through the pressing plate 12 and abuts against the pressing nozzle 11, and the pressing plate 12 and the pressing nozzle 11 are telescopically connected through the connecting rod 131 and the spring, so that when the pressing mechanism 1 is pressed by external force, firstly the pressing plate 12 and the pressing nozzle 11 move towards an electric core 3 along a vertical direction until the pressing nozzle 11 contacts a bus bar, the external force continues to press the pressing plate 12, at this time, since the pressing nozzle 11 is already in contact with the electric core 3 and the pressing nozzle 11 is telescopically connected with respect to the pressing plate 12, the pressing nozzle 11 will receive a reaction force from the electric core 3, so that the pressing nozzle 11 moves towards the pressing plate 12 by a small amplitude, thereby generating displacement, and the displacement sensor is fixed with the pressing plate 12, the sense terminal of displacement sensor contradicts on pressure mouth 11, thereby when pressure mouth 11 produces the displacement for clamp plate 12, displacement sensor can sense to the relative displacement of pressure mouth 11 for the clamp plate, thereby judge hold-down mechanism 1 according to the displacement and establish the condition to the pressure of electricity core 3, guaranteed to press and established the condition and carry out real-time supervision, thereby can in time discover and solve compressing tightly in-process problem, guaranteed to compress tightly the effect and for subsequent welding preparation, and then guaranteed the quality of product.

In a second aspect, please refer to fig. 4, as shown in the drawings, the present application provides a welding tool 100, which includes the pressing mechanism 1 in the above embodiments;

the mirror 2 shakes, the laser that the mirror 2 emitted that shakes passes hold-down mechanism 1's welding hole and welding mouth carry out the welding of piece and utmost point post, at every turn the mirror 2 that shakes launches the laser of predetermineeing quantity in proper order.

The number of the pole pieces and the pole posts welded by the galvanometer at each time is related to the number of the pole posts which can be covered by the laser of the galvanometer, and of course, a smaller number of the pole posts and the pole pieces can be welded according to requirements. For example, the laser of the vibrating mirror can cover 4 poles, and at the moment, the vibrating mirror can sequentially weld 4 poles and a bar sheet at each time, and can also weld 3 poles and bar sheets or 2 poles and bar sheets and 1 pole and bar sheet.

The galvanometer 2 is a device for welding after the pressing mechanism 1 finishes pressing, and after pressing is finished, laser emitted by the galvanometer 2 penetrates through a welding hole and a welding port of the pressing mechanism 1 to weld the pole piece and the pole post.

Among the technical scheme of this application embodiment, welding frock 100 includes hold-down mechanism 1 and the mirror 2 that shakes, and hold-down mechanism 1 is accomplishing the back that compresses tightly of piece and electric core 3's utmost point post, and the laser that shakes the mirror 2 transmission passes hold-down mechanism 1's welding hole and welding mouth carry out the welding of piece and utmost point post, and shake mirror 2 at every turn and launch the laser of predetermineeing quantity in proper order and weld in proper order to predetermineeing quantity electric core 3.

The number of the pressure nozzles 11 of the pressing mechanism 1 is the same as that of the lasers emitted by the galvanometers 2 in sequence each time.

Hold-down mechanism 1 adopts the pressure mouth 11 of fixed quantity according to the quantity of 2 single welding utmost point posts of mirror that shake, thereby hold-down mechanism adopts little unit hold-down mechanism 1, carry out the unit formula welding through removing pressure mouth 11 positions, once only need press less quantity utmost point post, can effectually reduce because of 3 utmost point post flatness of electricity core height uneven influences that cause the packing force inconsistent, and the hold-down mechanism 1 of little unit, clamp plate 12 area is little, machining precision and material strength obtain the guarantee easily, hold-down mechanism 1 installation adjustment is simple and convenient.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A hold-down mechanism, comprising:

the pressing part is provided with a pressing nozzle along the vertical direction;

and the detection end of the displacement sensing device abuts against the pressure nozzle so that the detection end of the displacement sensing device detects and reads the displacement of the pressure nozzle.

2. The clamping mechanism of claim 1, wherein said clamping portion further comprises:

the pressing plate, the clamp plate with the pressure mouth sets up along vertical direction interval, the pressure mouth with clamp plate telescopic connection, clamp plate fixed connection displacement sensing device, external drive the clamp plate, the clamp plate drives the pressure mouth is relative the clamp plate produces the displacement along vertical direction.

3. The clamping mechanism of claim 2, wherein said clamping portion further comprises:

the telescopic connecting device extends along the vertical direction to form, the first end of the telescopic connecting device is fixedly connected with the pressing plate, and the second end of the telescopic connecting device is slidably connected with the pressing nozzle.

4. The compression mechanism of claim 3, wherein the retractable linkage comprises:

the connecting rod extends along the vertical direction, the first end of the connecting rod is fixedly connected with the pressure plate, and the second end of the connecting rod is connected with the pressure nozzle in a sliding manner;

the elastic piece is sleeved outside the connecting rod, and two ends of the elastic piece are respectively abutted against the pressing plate and the pressing nozzle.

5. The clamping mechanism of claim 4,

the connecting rod is of a T-shaped structure and comprises a rod body parallel to the vertical direction and a rod cap arranged at one end of the rod body;

the pressure nozzle is close to the one side of clamp plate be provided with the opening of body of rod looks adaptation, and be provided with in the opening with the cavity of pole cap diameter looks adaptation, the cavity has the predetermined degree of depth along vertical direction, the pole cap set up in the cavity, the body of rod stretches out the opening.

6. The clamping mechanism of any one of claims 3 to 5,

the pressure plate is provided with a through hole, and the detection end of the displacement sensing device penetrates through the through hole and abuts against the pressure nozzle;

the clamp plate orientation the one side of pressure mouth have with scalable connecting device looks adaptation recess, scalable connecting device's first end stretch into in the recess with clamp plate fixed connection.

7. The clamping mechanism of any one of claims 2 to 5, further comprising:

and one end of the fixing part is fixedly connected with the displacement sensing device, and the other end of the fixing part is fixedly connected with the pressing plate.

8. The clamping mechanism of any one of claims 2 to 5,

the pressure nozzle is of a structure with a wide upper part and a narrow lower part, a through welding opening is formed in the pressure nozzle, and a through welding hole corresponding to the welding opening is formed in the pressing plate.

9. A welding tool, characterized by comprising the pressing mechanism of any one of claims 1 to 8;

the laser emitted by the vibrating mirror penetrates through the welding hole and the welding port of the pressing mechanism to weld the pole pieces and the poles, and the vibrating mirror emits the laser with a preset quantity at each time.

10. The welding tool of claim 9,

the number of the pressure nozzles of the pressing mechanism is the same as that of the laser emitted by the galvanometer each time.

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