CN218312058U - Centering device - Google Patents

Abstract

The utility model relates to a centering device. This centering device includes: the first positioning mechanism comprises a first support frame and a first positioning assembly, and the first positioning assembly is arranged on the first support frame; the second positioning mechanism comprises a second support frame and a second positioning assembly, the second positioning assembly is arranged on the second support frame and is oppositely arranged with the first positioning assembly in the first direction, so that a positioning station for the accommodating part to pass through is formed between the first positioning assembly and the second positioning assembly; wherein the first and second positioning assemblies are configured to be able to approach or move away from each other; in the process that the first positioning assembly and the second positioning assembly are close to each other, the first positioning assembly and the second positioning assembly can clamp the accommodating part located at the positioning station together and are respectively abutted against two ends of the element in the first direction.

Description

Centering device

Technical Field

The utility model relates to a battery manufacture equipment technical field especially relates to a centering device.

Background

In the production process of batteries, especially cylindrical batteries, a cylindrical battery core needs to be arranged in a steel shell. The steel shell is generally cylindrical and has openings at both ends. At present, a common shell entering mode is that a mandril is used for pushing a battery core to enter the steel shell from one opening.

However, the accurate middle part of the steel shell of the electric core cannot be ensured due to the low stroke precision of the ejector rod during the shell entering operation, so that the subsequent processing operation is inconvenient, and the product quality is influenced.

SUMMERY OF THE UTILITY MODEL

On the basis, it is necessary to provide a centering device for improving the defects in the prior art, aiming at the problems that the electric core cannot be ensured to be positioned in the middle of the steel shell due to low stroke precision of the ejector rod during shell entering operation, so that subsequent processing operation is inconvenient and the product quality is affected.

A centering device for positioning an element received in a receiving member, the centering device comprising:

the first positioning mechanism comprises a first positioning component; and

the second positioning mechanism comprises a second positioning assembly, and the second positioning assembly and the first positioning assembly are oppositely arranged in the first direction so as to form a positioning station for the accommodating part to pass through between the first positioning assembly and the second positioning assembly;

wherein the first positioning assembly and the second positioning assembly are configured to be able to approach or move away from each other; in the process that the first positioning assembly and the second positioning assembly are close to each other, the first positioning assembly and the second positioning assembly can clamp the accommodating part located at the positioning station together, and are respectively abutted with two ends of the element in the first direction.

In one embodiment, a side of the first positioning component facing the second positioning component has a first positioning portion having a first positioning surface and a second positioning surface; one side of the second positioning assembly, which faces the first positioning assembly, is provided with a second positioning part, and the second positioning part is provided with a third positioning surface and a fourth positioning surface;

the first positioning surface and the third positioning surface are used for being respectively abutted with two ends of the accommodating component in the first direction, and the second positioning surface and the fourth positioning surface are used for being respectively abutted with two ends of the element in the first direction.

In one embodiment, the first positioning mechanism further includes a first support frame, the first positioning assembly includes a first slide and a first mount, the first slide is movably connected to the first support frame along the first direction, the first mount is disposed on the first slide, and the first positioning portion is disposed on the first mount;

the position of the first mounting seat relative to the first sliding seat in a second direction is adjustable, and the second direction is perpendicular to the first direction.

In one embodiment, the second positioning mechanism includes a second support frame, the second positioning assembly includes a second sliding base and a second mounting base, the second sliding base is movably connected to the second support frame along the first direction, the second mounting base is disposed on the second sliding base, and the second positioning portion is disposed on the second mounting base.

In one embodiment, the second positioning assembly further includes a first blocking portion and a first buffering elastic member, the second positioning portion is movably connected to the second mounting seat along the first direction, the first blocking portion is mounted on the second mounting seat, and the first buffering elastic member abuts against the second positioning portion and the first blocking portion to provide an elastic force that enables the second positioning portion to have a moving tendency toward the first positioning mechanism.

In one embodiment, the second positioning assembly further includes a second blocking portion connected to the second slide, and a second buffering elastic member abutting against the second blocking portion and the second mounting seat for providing an elastic force that causes the second mounting seat to have a moving tendency toward the first positioning mechanism.

In one embodiment, the centering device further comprises a driving mechanism, the driving mechanism comprises a driving assembly, a first transmission assembly and a second transmission assembly, the first transmission assembly is in transmission connection between the driving assembly and the first positioning assembly, and the second transmission assembly is in transmission connection between the driving assembly and the second positioning assembly.

In one embodiment, the drive assembly comprises a first drive shaft, a second drive shaft, a transmission structure and a rotary drive;

the first driving shaft and the second driving shaft are both rotatably arranged, and the transmission structure is in transmission connection between the first driving shaft and the second driving shaft so as to enable either one of the first driving shaft and the second driving shaft to rotate while the other one of the first driving shaft and the second driving shaft rotates; the rotary drive is in driving connection with the first drive shaft or the second drive shaft;

wherein the first transmission assembly is in transmission connection between the first driving shaft and the first positioning assembly, and the second transmission assembly is in transmission connection between the second driving shaft and the second positioning assembly.

In one embodiment, the first transmission assembly includes a first swing arm having a first end and a second end, a first cam structure rotatably disposed about the first end, and a first link structure drivingly connected between the first drive shaft and the first swing arm to convert rotational motion of the first drive shaft into oscillatory motion of the first swing arm about the first end;

the second end is in transmission connection with the first connecting rod structure, and the first connecting rod structure is in transmission connection with the first positioning assembly so as to convert the swinging motion of the first swing arm into the movement of the first positioning assembly along the first direction.

In one embodiment, the first cam structure comprises a first cam and a first roller, the first cam is mounted on the first driving shaft and rotates synchronously with the first driving shaft; the first roller is installed on the first swing arm and is in rolling fit with the first cam, so that the first cam drives the first swing arm to swing around the first end through the first roller in the rotating process.

In one embodiment, the first positioning member has a first guide groove extending in a third direction intersecting the first direction;

the first connecting rod structure comprises a first connecting rod, a first driving rod and a second roller, and the first connecting rod is rotatably arranged and is provided with a third end and a fourth end; one end of the first driving rod is hinged with the second end, and the other end of the first driving rod is hinged with the third end;

the second roller is rotatably connected to the fourth end and is in rolling fit with the first guide groove.

In one embodiment, the second positioning assembly includes a second swing arm having a fifth end and a sixth end, a second cam structure rotatably disposed about the fifth end, and a second link structure drivingly connected between the second drive shaft and the second swing arm to convert rotational motion of the second drive shaft into oscillatory motion of the second swing arm about the fifth end;

the sixth end is in transmission connection with the second connecting rod structure, and the second connecting rod structure is in transmission connection with the second positioning assembly so as to convert the swinging motion of the second swing arm into the movement of the second positioning assembly along the first direction.

In one embodiment, the second cam structure comprises a second cam and a third roller, the second cam is mounted on the second driving shaft and rotates synchronously with the second driving shaft; the third roller is installed on the second swing arm and is in rolling fit with the second cam, so that the second cam drives the second swing arm to swing around the fifth end through the third roller in the rotating process.

In one embodiment, the second positioning member has a second guide groove extending in a third direction intersecting the first direction;

the second connecting rod structure comprises a second connecting rod, a second driving rod and a fourth roller, and the second connecting rod is rotatably arranged and provided with a seventh end and an eighth end; one end of the second driving rod is hinged with the sixth end, and the other end of the second driving rod is hinged with the seventh end;

the fourth roller is rotatably connected to the eighth end and is in rolling fit with the second guide groove.

In one embodiment, the centering device further comprises a limiting mechanism, the limiting mechanism comprises a third supporting frame and a limiting component movably connected to the third supporting frame along a third direction, the limiting component is provided with a limiting part positioned on one side of the positioning station in the third direction, and the third direction is perpendicular to the first direction;

the limiting component can move to a limiting position along the third direction, so that the limiting part limits the accommodating part of the positioning station in the third direction.

In one embodiment, the driving mechanism further comprises a third transmission assembly, and the third transmission assembly is in transmission connection between the driving assembly and the limiting assembly.

In one embodiment, the third transmission assembly includes a third swing arm, a third cam structure, and a third link structure; the third swing arm is provided with a ninth end and a tenth end, and the ninth end is rotatably arranged relative to the third supporting frame;

the third cam structure is in transmission connection between the third swing arm and the first drive shaft or the second drive shaft to convert the rotary motion of the first drive shaft or the second drive shaft into the swinging motion of the third swing arm around the ninth end;

the tenth end is in transmission connection with the third connecting rod structure, and the third connecting rod structure is in transmission connection with the limiting assembly so as to convert the swinging motion of the third swing arm into the movement of the limiting assembly along the third direction.

In one embodiment, the third cam structure comprises a third cam and a fifth roller, the third cam is mounted on the first driving shaft or the second driving shaft and rotates synchronously with the first driving shaft or the second driving shaft; the fifth roller is installed on the third swing arm and is in rolling fit with the third cam, so that the third cam drives the third swing arm to swing around the ninth end through the fifth roller in the rotating process.

In one embodiment, the limiting assembly has a third guide groove extending along the first direction;

the third connecting rod structure comprises a third connecting rod, a third driving rod and a sixth roller; the third connecting rod is rotatably arranged relative to the third supporting frame and is provided with a tenth end and a twelfth end; one end of the third driving rod is hinged with the tenth end, and the other end of the second driving rod is hinged with the eleventh end; the sixth roller is rotatably connected to the twelfth end and is in rolling fit with the third guide groove.

After the battery cell is placed in the steel shell, the centering device needs to be used for centering the battery cell. The specific process of the centering treatment is as follows: firstly, the steel shell is circulated to a positioning station between a first positioning assembly and a second positioning assembly. And then, controlling the first positioning assembly and the second positioning assembly to approach each other along the first direction until the steel shell is clamped along the first direction. Meanwhile, the first positioning assembly and the second positioning assembly respectively extend into the steel shell from openings at two ends of the steel shell to be abutted against two ends of the battery cell inside the steel shell, so that the battery cell inside the steel shell is positioned, and the battery cell is located in the middle of the steel shell. Finally, the first positioning assembly and the second positioning assembly are far away from each other, clamping of the steel shell is released, the steel shell can continue to flow downstream, centering of the battery cell in the steel shell is completed, the battery cell is guaranteed to be located in the middle of the steel shell, follow-up machining operation of the steel shell is facilitated, and product quality is improved.

Drawings

Fig. 1 is a schematic structural view of a centering device according to an embodiment of the present invention;

FIG. 2 is a top view of the centering device shown in FIG. 1;

FIG. 3 is a schematic view of the drive mechanism of the centering device shown in FIG. 1;

FIG. 4 is a top view of the drive mechanism shown in FIG. 3;

FIG. 5 is a schematic view of an assembly structure of a first connecting rod and a first guiding seat in the centering device shown in FIG. 1;

fig. 6 is a schematic structural view of a limiting mechanism of the centering device shown in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

An embodiment of the utility model provides a centering device for fix a position the component of acceping in the holding part, make this component be located the middle part of holding part. For convenience of description, the accommodating component is a steel shell a, and the element is an electric core. The steel shell A is roughly cylindrical, openings are formed in two ends of the steel shell A, and the battery cell is arranged inside the steel shell A through one opening.

Referring to fig. 1, in an embodiment of the present invention, the centering device includes a first positioning mechanism 20 and a second positioning mechanism 30. The first positioning mechanism 20 includes a first support frame 21 and a first positioning assembly 22, and the first positioning assembly 22 is disposed on the first support frame 21. The second positioning mechanism 30 includes a second supporting frame 31 and a second positioning component 32, and the second positioning component 32 is disposed on the second supporting frame 31. The second positioning assembly 32 and the first positioning assembly 22 are arranged oppositely in the first direction X, so that a positioning station a for the steel shell a to pass through is formed between the two.

Wherein the first positioning assembly 22 and the second positioning assembly 32 are configured to be able to approach or move away from each other. In the process that first locating component 22 and second locating component 32 are close to each other, first locating component 22 and second locating component 32 can press from both sides the steel casing a that is located location station a jointly, and respectively with the both ends butt of the interior electric core of this steel casing a on first direction X, thereby realized the location to the electric core in the steel casing a, make the electric core be located the intermediate position of steel casing a (namely the distance of electric core to the one end of steel casing a equals with the distance of electric core to the other end of steel casing a).

Thus, after the battery cell is placed in the steel shell a, the battery cell needs to be centered by using the centering device. The centering process comprises the following specific steps: first, the steel shell a is flowed to the positioning station a between the first positioning assembly 22 and the second positioning assembly 32. Then, the first positioning assembly 22 and the second positioning assembly 32 are controlled to approach each other along the first direction X until the steel shell a is clamped along the first direction X. Meanwhile, the first positioning assembly 22 and the second positioning assembly 32 respectively extend into the steel shell a from the openings at the two ends of the steel shell a to be respectively abutted against the two ends of the electric core inside the steel shell a, so that the electric core inside the steel shell a is positioned, and the electric core is positioned in the middle of the steel shell a. Finally, the first positioning assembly 22 and the second positioning assembly 32 are far away from each other, so that the clamping of the steel shell a is released, the steel shell a can continue to flow downstream, namely, the centering treatment of the battery cell in the steel shell a is completed, the battery cell is ensured to be positioned in the middle of the steel shell a, the subsequent processing operation of the steel shell a is facilitated, and the product quality is improved.

In the embodiment, the first positioning component 22 has a first positioning portion 221 on a side facing the second positioning component 32. The first positioning portion 221 has a first positioning surface d1 and a second positioning surface d2. The second positioning member 32 has a second positioning portion 321 on a side facing the first positioning member 22, and the second positioning portion 321 has a third positioning surface d3 and a fourth positioning surface d4. Wherein, this first locating surface d1 and third locating surface d3 are used for respectively with the both ends butt of box hat A on first direction X, second locating surface d2 and fourth locating surface d4 be used for respectively with the both ends butt of electric core in the box hat A on first direction X. In this way, when the centering operation is required, the first positioning assembly 22 and the second positioning assembly 32 are controlled to approach each other along the first direction X until the first positioning surface d1 of the first positioning portion 221 and the third positioning surface d3 of the second positioning portion 321 are respectively abutted against the two ends of the steel shell a, so as to clamp the steel shell a along the first direction X. Meanwhile, the second positioning surface d2 of the first positioning portion 221 and the fourth positioning surface d4 of the second positioning portion 321 are respectively abutted to two ends of the battery cell in the steel shell a, so that the position of the battery cell relative to the steel shell a is positioned, that is, the battery cell is located in the middle of the steel shell a.

It can be understood that the distance that the second positioning surface d2 protrudes from the first positioning surface d1 is equal to the distance that the fourth positioning surface d4 protrudes from the third positioning surface d3, so that the distance between the electric core and the two ends of the steel shell a after centering is equal, that is, the electric core is located in the middle of the steel shell a.

Referring to fig. 1 and fig. 2, in an embodiment of the present invention, the first positioning assembly 22 includes a first sliding seat 222 and a first mounting seat 223. The first carriage 222 is movably connected to the first support frame 21 in the first direction X. The first mount 223 is disposed on the first slider 222. The first positioning portion 221 is disposed on the first mounting seat 223, so that the first mounting seat 223 and the first positioning portion 221 move along the first direction X along with the first sliding seat 222, and thus the first positioning portion 221 and the second positioning portion 321 cooperate to perform centering processing on the electric core in the steel shell a.

Specifically, in the embodiment, the first support frame 21 is provided with a first slide rail 211 extending lengthwise along the first direction X, and the first slide base 222 is provided with a first slide block 2221 slidably engaged with the first slide rail 211. In this way, the movement of the first slider 2221 along the first slide rail 211 guides the movement of the first slider 222 relative to the first support frame 21.

In particular, in the embodiment, the position of the first mounting seat 223 relative to the first sliding seat 222 is adjustable in the second direction Y, which is perpendicular to the first direction X. In this way, the position adjustment of the first positioning portion 221 relative to the second positioning portion 321 in the second direction Y can be achieved by adjusting the position of the first mounting seat 223 relative to the first slide seat 222 in the second direction Y, so as to ensure the alignment of the first positioning portion 221 and the second positioning portion 321 in the first direction X.

Further, the first positioning assembly 22 further includes an adjusting knob 224, and the adjusting knob 224 is rotatably connected to the first slide base 222 and is threadedly connected to the first mounting base 223. In this way, when the adjusting knob 224 is screwed, the adjusting knob 224 can drive the first mounting seat 223 to move along the second direction Y relative to the first sliding seat 222, so as to adjust the position of the first positioning portion 221 relative to the second positioning portion 321 in the second direction Y.

Further, the first positioning assembly 22 also includes a locking member. The first mounting seat 223 is provided with a first waist-shaped hole 2231, and the locking member passes through the first waist-shaped hole 2231 and is connected with the first sliding seat 222 by a screw thread, so as to lock and fix the first mounting seat 223 on the first sliding seat 222. As such, when the position of the first positioning portion 221 in the second direction Y needs to be adjusted, first, the locking member is loosened, so that the locking member releases the locking of the first mounting seat 223. Then, the adjusting knob 224 is screwed to drive the first mounting seat 223 to move relative to the first sliding seat 222 along the second direction Y, and further drive the first positioning portion 221 to perform position adjustment along the second direction Y. When the position is adjusted to the right position, the turning of the adjusting knob 224 is stopped, and the locking member is tightened, so that the locking member locks and fixes the first mounting seat 223 to the first slide 222. Alternatively, the locking member may employ a screw.

In an embodiment of the present invention, the second positioning assembly 32 includes a second sliding seat 322 and a second mounting seat 323. The second slider 322 is movably connected to the second support frame 31 along the first direction X. The second mounting seat 323 is arranged on the second sliding seat 322, and the second positioning portion 321 is arranged on the second mounting seat 323, so that the second mounting seat 323 and the second positioning portion 321 can move along the first direction X along with the second sliding seat 322, and the second positioning portion 321 cooperates with the first positioning portion 221 to complete centering of the battery cell in the steel shell a.

Specifically, in the embodiment, the second positioning assembly 32 further includes a first stopping portion 328 and a first buffering elastic member 327. The second positioning portion 321 is movably coupled to the second mounting seat 323 along the first direction X, and the first blocking portion 328 is mounted on the second mounting seat 323. The first buffer elastic member 327 abuts against both the second positioning portion 321 and the first blocking portion 328, and is used for providing an elastic force that causes the second positioning portion 321 to have a moving trend toward the first positioning portion 221. Thus, in the process that the steel shell a is clamped by the first positioning portion 221 and the second positioning portion 321 together, the first buffer elastic piece 327 can buffer the impact of the first positioning portion 221 and the second positioning portion 321 on the steel shell a, so as to avoid damage to the steel shell a and the battery cell. Alternatively, the first buffering elastic member 327 may be a spring.

In one embodiment, the second positioning assembly 32 further includes a second stopping portion 324 and a second buffering elastic member 325. The second mounting block 323 is movably coupled to the second slider 322 along the first direction X, and the second blocking portion 324 is coupled to the second slider 322. The second buffer elastic member 325 abuts both the second blocking portion 324 and the second mounting seat 323, and provides an elastic force that makes the second mounting seat 323 have a tendency to move toward the first positioning portion 221. Like this, at the in-process that first location portion 221 and second location portion 321 press from both sides tight box hat A jointly, this second buffering elastic component 325 can cushion the impact that first location portion 221 and second location portion 321 produced box hat A to avoid causing the damage to box hat A and electric core. Alternatively, the second buffering elastic member 325 may employ a spring.

Further, the second positioning assembly 32 further includes a guide post 3251, a limiting block 3252 and a limiting screw 326. The second blocking portion 324 is provided with a guide hole penetrating therethrough along the first direction X, and the guide post 3251 is inserted into the guide hole and is movable along the guide hole. One end of the guide post 3251 is fixedly connected to the second mounting seat 323, and the second buffering elastic element 325 is sleeved on the guide post 3251, and two opposite ends of the second buffering elastic element are respectively abutted to the second mounting seat 323 and the second blocking portion 324. One end of the guide post 3251 facing away from the second mounting seat 323 is connected with a limiting block 3252, the limiting block 3252 is in threaded connection with a limiting screw 326, and the limiting screw 326 is used for abutting against one side of the second blocking portion 324 facing away from the second buffering elastic member 325. In this way, the limit position of the second mounting seat 323 moving towards the first positioning assembly 22, that is, the limit position of the second positioning portion 321 moving towards the first positioning portion 221, is defined by the limit screw 326, so as to avoid over-tightening of the first positioning portion 221 and the second positioning portion 321 to clamp the steel shell a, which may damage the steel shell a and the battery cell.

Optionally, a second slide rail extending lengthwise along the first direction X is disposed on the second support frame 31, and a second slider slidably engaged with the second slide rail is disposed on the second slide seat 322. In this way, the second slider moves along the second slide rail to guide the movement of the second slider 322 relative to the second support frame 31 along the first direction X.

Optionally, a fourth slide rail extending lengthwise along the first direction X is disposed on the second slide seat 322, and a fourth slider slidably engaged with the fourth slide rail is disposed on the second mounting seat 323. In this way, the movement of the second mount 323 relative to the second slider 322 in the first direction X is guided by the movement of the fourth slider along the fourth slide rail.

In one embodiment, the first mounting seat 223 is provided with a plurality of first positioning portions 221, and the plurality of first positioning portions 221 are arranged at intervals along the second direction Y. The second mounting base 323 is provided with a plurality of second positioning portions 321, and the plurality of second positioning portions 321 are arranged at intervals in the second direction Y. The first positioning portions 221 and the second positioning portions 321 correspond to each other one by one, and one first positioning portion 221 and one second positioning portion 321 corresponding to each group are aligned in the first direction X, and a positioning station a is formed between the first positioning portion 221 and the second positioning portion 321. So, set up a plurality of first location portions 221 and a plurality of second location portion 321 to form a plurality of location station a, and then can carry out the centering to the electric core that is located each location station a's box hat A simultaneously, be favorable to improving production efficiency. Specifically, in the embodiment shown in fig. 2, two first positioning portions 221 are arranged on the first mounting seat 223, and two second positioning portions 321 are arranged on the second mounting seat 323, so that two positioning stations a are formed, and thus, the battery cells of the steel shell a located at the two positioning stations a can be centered at the same time.

Referring to fig. 1, 3 and 4, in an embodiment of the present invention, the centering device further includes a driving mechanism 40, and the driving mechanism 40 includes a driving assembly, a first transmission assembly 42 and a second transmission assembly 43. The first transmission assembly 42 is drivingly connected between the driving assembly and the first positioning assembly 22, such that the driving assembly can drive the first positioning assembly 22 to move along the first direction X through the first transmission assembly 42. The second transmission assembly 43 is in transmission connection between the driving assembly and the second positioning assembly 32, so that the driving assembly can drive the second positioning assembly 32 to move along the first direction X through the second transmission assembly 43. Therefore, the first positioning assembly 22 and the second positioning assembly 32 are driven by one driving assembly to move along the first direction X, so that the centering treatment of the battery cell in the steel shell a is realized, on one hand, a power source is saved, and the device cost is reduced; and on the other hand, to facilitate controlling the first positioning assembly 22 and the second positioning assembly 32 to move closer to or farther away from each other in synchronization.

In one embodiment, the driving assembly includes a first driving shaft 411, a second driving shaft 412, a transmission structure (not shown), and a rotary driving member (not shown). The first driving shaft 411 is rotatably disposed with respect to the first support frame 21, and the second driving shaft 412 is rotatably disposed with respect to the second support frame 31. The transmission structure is in transmission connection between the first driving shaft 411 and the second driving shaft 412, so that when one of the first driving shaft 411 and the second driving shaft 412 rotates, the other one can be driven to rotate. The rotary drive is in driving connection with the first drive shaft 411 or the second drive shaft 412 to drive the first drive shaft 411 or the second drive shaft 412 in rotation.

The first transmission assembly 42 is drivingly connected between the first driving shaft 411 and the first positioning assembly 22, so that the first driving shaft 411 can drive the first positioning assembly 22 to move along the first direction X when rotating. The second transmission assembly 43 is connected between the second driving shaft 412 and the second positioning assembly 32 in a transmission manner, so that the second driving shaft 412 can drive the second positioning assembly 32 to move along the first direction X when rotating. Alternatively, the transmission structure may adopt a belt transmission structure, a gear transmission structure, or the like, as long as synchronous rotation of the first driving shaft 411 and the second driving shaft 412 can be achieved, and is not limited herein.

In particular to the embodiment, the first transmission assembly 42 includes a first swing arm 421, a first cam structure 422, and a first link structure 423 (see fig. 1). The first swing arm 421 has a first end b1 and a second end b2, and the first end b1 of the first swing arm 421 is rotatably disposed relative to the first support frame 21, so that the first swing arm 421 can swing around the first end b 1. The first cam structure 422 is drivingly connected between the first driving shaft 411 and the first swing arm 421 to convert the rotational motion of the first driving shaft 411 into the swinging motion of the first swing arm 421 about the first end b 1. The second end b2 of the first swing arm 421 is in transmission connection with the first link structure 423, and the first link structure 423 is in transmission connection with the first positioning assembly 22, so as to convert the swing motion of the first swing arm 421 into the linear movement of the first positioning assembly 22 along the first direction X. Thus, when the first positioning assembly 22 needs to be driven to move along the first direction X, the first driving shaft 411 rotates, so that the first cam structure 422 drives the first swing arm 421 to swing around the first end b1, and the first swing arm 421 drives the first positioning assembly 22 to move along the first direction X through the first connecting rod structure 423.

In particular embodiments, the first cam structure 422 includes a first cam 4221 and a first roller 4222. The first cam 4221 is mounted on the first driving shaft 411 and rotates in synchronization with the first driving shaft 411. The first roller 4222 is mounted on the first swing arm 421 and is in rolling fit with the first cam 4221, so that the first cam 4221 drives the first swing arm 421 to swing around the first end b1 through the first roller 4222 in the rotating process. In this way, when the first driving shaft 411 rotates, the first cam 4221 is driven to rotate, so that the first roller 4222 rolls along the first cam 4221, and the first cam 4221 drives the first swing arm 421 to swing around the first end b1 through the first roller 4222. It will be appreciated that the first roller 4222 is located between the first end b1 and the second end b2 of the first swing arm 421, preferably approximately in the middle of the first swing arm 421.

Further, the first cam structure 422 further includes a first elastic member 4223, one end of the first elastic member 4223 is fixed relative to the first support frame 21, and the other end of the first elastic member is connected to the second end b2 of the first swing arm 421, so as to provide a pre-tightening force for keeping the first roller 4222 pressed against the first cam 4221, so that the first roller 4222 and the first cam 4221 are always kept in rolling fit. Alternatively, the first elastic member 4223 may employ a spring.

In particular, in the embodiment, the first positioning member 22 has a first guide groove 2251 (see fig. 5), and the first guide groove 2251 extends in the third direction Z intersecting the first direction X. Preferably, the third direction Z is perpendicular to the first direction X. Specifically, in the embodiment shown in fig. 1, the first direction X is a left-right direction, the second direction Y is a direction perpendicular to the paper, and the third direction Z is an up-down direction.

Referring to fig. 1 and 5, the first link structure 423 includes a first link 4231, a first driving rod 4232 and a second roller 4233. The first link 4231 is rotatably disposed with respect to the first support frame 21 and has a third end b3 and a fourth end b4. One end of the first driving rod 4232 is hinged to the second end b2 of the first swing arm 421, and the other end of the first driving rod 4232 is hinged to the third end b3 of the first link 4231. The second roller 4233 is rotatably coupled to the fourth end b4 of the first link 4231 and is in rolling engagement with the first guide groove 2251. Thus, when the first swing arm 421 swings, the first swing arm 421 drives the first link 4231 to rotate through the first driving rod 4232, and the first link 4231 drives the second roller 4233 to move along the first guide groove 2251 of the first positioning assembly 22, so as to drive the first positioning assembly 22 to move along the first direction X.

Further, the first positioning assembly 22 further includes a first guide seat 225 connected to the first sliding seat 222, and a first guide groove 2251 is formed on the first guide seat 225. Thus, when the first link 4231 rotates, the second roller 4233 drives the first sliding seat 222 to move along the first direction X, so as to further realize that the first positioning portion 221 moves along the first direction X.

Further, the position of the first guide seat 225 on the first sliding seat 222 is adjustable along the first direction X, so as to adjust the moving range of the first sliding seat 222 relative to the first support frame 21 along the first direction X, so as to ensure that the first sliding seat 222 can drive the first positioning portion 221 to move to abut against the battery cells in the steel shell a and the steel shell a.

Optionally, the first positioning assembly 22 further includes a first locking screw and a first adjusting screw, and the first sliding seat 222 is provided with a second kidney-shaped hole extending lengthwise along the first direction X. The first locking screw is inserted into the second kidney-shaped hole and is in threaded connection with the first guide seat 225, so as to lock and fix the first guide seat 225 on the first sliding seat 222. The first adjustment screw is rotatably coupled to the first slider 222 and is threadedly coupled to the first guide holder 225. As such, when the position of the first guide holder 225 needs to be adjusted, first, the first locking screw is loosened to release the locking of the first guide holder 225. Then, the first adjusting screw is screwed, so as to drive the first guide holder 225 to move along the first direction X relative to the first sliding base 222 until the first guide holder 225 moves to a position. Finally, the first locking screw is tightened to re-lock the first guide 225 to the first slide 222.

Further, the centering device further comprises a bottom plate 10, and the first support frame 21 and the second support frame 31 are fixedly connected to the bottom plate 10. The first driving shaft 411 and the second driving shaft 412 are both mounted on the base plate 10 through bearings. A rotary drive is also mounted on the base plate 10 and is in driving connection with either of the first and second drive shafts 411, 412. The end of the first elastic member 4223 away from the first swing arm 421 is connected to the base plate 10.

With continued reference to fig. 3 to 4, the first transmission assembly 42 further includes a first support 4212 and a first swing shaft 4211. The first support 4212 is fixedly connected to the base plate 10, and the first swing shaft 4211 is fixedly mounted on the first support 4212. A first end b1 of the first swing arm 421 is mounted on the first swing shaft 4211 through a bearing so that the first swing arm 421 can swing about the first swing shaft 4211 by the first cam 4221.

Referring to fig. 1, 3 and 4, in an embodiment, the second transmission assembly 43 includes a second swing arm 431, a second cam structure 432 and a second link structure 433. The second swing arm 431 has a fifth end b5 and a sixth end b6, and the fifth end b5 of the second swing arm 431 is rotatably disposed relative to the second support frame 31, so that the second swing arm 431 can swing around the fifth end b 5. The second cam structure 432 is drivingly connected between the second driving shaft 412 and the second swing arm 431, so as to convert the rotational motion of the second driving shaft 412 into the swinging motion of the second swing arm 431 around the fifth end b 5. The sixth end b6 of the second swing arm 431 is in transmission connection with the second link structure 433, and the second link structure 433 is in transmission connection with the second positioning assembly 32, so as to convert the swing motion of the second swing arm 431 into the linear motion of the second positioning assembly 32 along the first direction X. Thus, when the second positioning assembly 32 needs to be driven to move along the first direction X, the second driving shaft 412 drives the second swing arm 431 to swing around the fifth end b5 through the second cam structure 432, and the second swing arm 431 drives the second positioning assembly 32 to move along the first direction X through the second link structure 433.

In one embodiment, the second cam structure 432 includes a second cam 4321 and a third roller 4322. The second cam 4321 is mounted on the second driving shaft 412 and rotates in synchronization with the second driving shaft 412. The third roller 4322 is mounted on the second swing arm 431 and is in rolling fit with the second cam 4321, so that the second cam 4321 drives the second swing arm 431 to swing around the fifth end b5 through the third roller 4322 during the rotation process of the second cam 4321. Thus, the second driving shaft 412 rotates to drive the second cam 4321 to rotate, so that the third roller 4322 rolls along the second cam 4321, and the second cam 4321 drives the second swing arm 431 to swing around the fifth end b5 via the third roller 4322. It is understood that the third roller 4322 is located between the fifth end b5 and the sixth end b6 of the second swing arm 431, and preferably, may be located approximately at the middle of the second swing arm 431.

Further, the second cam structure 432 further includes a second elastic element 4323, one end of the second elastic element 4323 is fixed relative to the second supporting frame 31, and the other end is connected to the sixth end b6 of the second swing arm 431, for providing a pre-tightening force that the third roller 4322 is pressed against the second cam 4321, so that the third roller 4322 and the second cam 4321 are always kept in rolling fit. Alternatively, the second elastic member 4323 may employ a spring. An end of the second elastic member 4323 remote from the second swing arm 431 is connected to the base plate 10.

In the embodiment, the second positioning member 32 has a second guide groove (not shown) extending in a third direction Z intersecting the first direction X. Preferably, the third direction Z is perpendicular to the first direction X.

Referring to fig. 1, the second link structure 433 includes a second link 4331, a second driving rod 4332 and a fourth roller (not shown). The second link 4331 is rotatably disposed with respect to the second support frame 31 and has a seventh end b7 and an eighth end b8. One end of the second driving lever 4332 is hinged to the sixth end b6 of the second swing arm 431, and the other end of the second driving lever 4332 is hinged to the seventh end b7 of the second link 4331. The fourth roller is rotatably coupled to the eighth end b8 of the second link 4331 and is in rolling engagement with the second guide groove. Thus, when the second swing arm 431 swings, the second swing arm 431 drives the second link 4331 to rotate through the second driving rod 4332, and the second link 4331 drives the fourth roller to move along the second guiding groove of the second positioning assembly 32, so as to drive the second positioning assembly 32 to move along the first direction X.

Further, the second positioning assembly 32 further includes a second guide seat 329 connected to the second slide seat 322, and the second guide groove is formed on the second guide seat 329. Thus, when the second link 4331 rotates, the second sliding base 322 is driven by the fourth roller to move along the first direction X, so that the second positioning portion 321 moves along the first direction X.

Further, the position of the second guide seat 329 on the second slide seat 322 is adjustable along the first direction X, so as to adjust the moving range of the second slide seat 322 relative to the second support frame 31 along the first direction X, and ensure that the second slide seat 322 can drive the second positioning portion 321 to move to abut against the electric core in the steel shell a and the electric core in the steel shell a.

Optionally, the second positioning assembly 32 further includes a second locking screw and a second adjusting screw, and a third kidney-shaped hole extending lengthwise along the first direction X is formed in the second sliding seat 322. The second locking screw penetrates through the third kidney-shaped hole and is in threaded connection with the second guide seat 329, so that the second guide seat 329 is locked and fixed on the second sliding seat 322. The second adjusting screw is rotatably coupled to the second slider 322 and is threadedly coupled to the second guide 329. In this manner, when the position of the second guide block 329 needs to be adjusted, first, the second locking screw is loosened to release the locking of the second guide block 329. Then, the second adjusting screw is screwed, so as to drive the second guide block 329 to move along the first direction X relative to the second slide seat 322 until the second guide block 329 moves to the position. Finally, the second locking screw is tightened to re-lock the second shoe 329 to the second carriage 322.

With continued reference to fig. 3 and fig. 4, the second transmission assembly 43 further includes a second support 4312 and a second swing shaft 4311. The second support 4312 is fixedly connected to the base plate 10, and the second swing shaft 4311 is fixedly connected to the second support 4312. A fifth end b5 of the second swing arm 431 is bearing-mounted on the second swing shaft 4311, so that the second swing arm 431 can swing about the second swing shaft 4311 by the second cam 4321.

Referring to fig. 4 and 6, in an embodiment of the present invention, the centering device further includes a limiting mechanism, and the limiting mechanism includes a third supporting frame 51 and a limiting assembly 52. The limiting component 52 is movably connected to the third supporting frame 51 along the third direction Z, and has a limiting portion 521 located on one side of the positioning station a in the third direction Z, so that in the process that the limiting component 52 moves along the third direction Z, the limiting portion 521 can be close to or away from the steel shell a located at the positioning station a.

The limiting component 52 can move to a limiting position along the third direction Z, so that the limiting part 521 limits the steel shell a positioned at the positioning station a in the third direction Z, the steel shell a is prevented from jumping in the third direction Z, and the first positioning component 22 and the second positioning component 32 can be successfully centered.

It should be noted that, when the limiting component 52 moves to the limiting position (that is, when the limiting portion 521 is used to limit the steel shell a), the limiting portion 521 just contacts with the steel shell a located at the positioning station a or a small gap exists between the steel shell a and the steel shell a, as long as the steel shell a can be limited in the third direction Z, which is not limited herein.

It should also be noted that, the steel shell a is conveyed by the conveying line to pass through the positioning station a, and when the conveying line conveys the steel shell a to the positioning station a, the limiting part 521 of the limiting assembly 52 is used for limiting the steel shell a in the third direction Z, that is, the steel shell a located at the positioning station a is limited between the limiting part 521 and the conveying line, so as to prevent the steel shell a from jumping along the third direction Z on the conveying line.

Specifically, in the embodiment, the limiting assembly 52 includes a third sliding seat 522, the third sliding seat 522 is movably connected to the third supporting frame 51 along the third direction Z, and the limiting portion 521 is connected to a side of the third sliding seat 522 facing the positioning station a, so that the third sliding seat 522 can drive the limiting portion 521 to approach or leave the steel shell a located at the positioning station a along the third direction Z.

Optionally, a third slide rail 511 extending lengthwise along the third direction Z is disposed on the third support frame 51, and a third slider 5221 slidably engaged with the third slide rail 511 is disposed on the third slide carriage 522, so that the third slide carriage 522 is guided to move relative to the third support frame 51 by the third slider 5221 moving along the third slide rail 511.

In some embodiments, the driving mechanism 40 further includes a third transmission assembly 44, and the third transmission assembly 44 is in transmission connection between the driving assembly and the limiting assembly 52, so that the driving assembly can drive the limiting assembly 52 to move along the third direction Z through the third transmission assembly 44, so as to complete the limiting of the steel shell a. Therefore, one driving assembly is used for driving the limiting assembly 52 to move along the third direction Z, the first positioning assembly 22 to move along the first direction X and the second positioning assembly 32 to move along the first direction X, so that the limiting of the steel shell a and the centering of the electric core in the steel shell a are realized, on one hand, a power source is saved, and the device cost is reduced; on the other hand, the sequence of the movement of the limiting component 52, the first positioning component 22 and the second positioning component 32 is convenient to control.

In particular embodiments, the third transmission assembly 44 includes a third swing arm 441, a third cam structure, and a third link structure 443. The third swing arm 441 has a ninth end b9 and a tenth end b10, and the ninth end b9 of the third swing arm 441 is rotatably disposed with respect to the third support frame 51, so that the third swing arm 441 can swing about the ninth end b 9. The third cam structure is drivingly connected between the third swing arm 441 and the first driving shaft 411 or the second driving shaft 412 to convert the rotational motion of the first driving shaft 411 or the second driving shaft 412 into the swinging motion of the third swing arm 441 about the ninth end b 9. The tenth end b10 of the third swing arm 441 is drivingly connected to the third link structure 443, and the third link structure 443 is drivingly connected to the position-limiting assembly 52, so as to convert the swinging motion of the third swing arm 441 into the linear motion of the position-limiting assembly 52 along the third direction Z. Thus, when the position-limiting assembly 52 needs to be driven to move along the third direction Z, the first driving shaft 411 or the second driving shaft 412 drives the third swing arm 441 to swing around the ninth end b9 through the third cam structure, and the third swing arm 441 drives the position-limiting assembly 52 to move along the third direction Z through the third link structure 443.

In one embodiment, the third cam structure includes a third cam 4421 and a fifth roller (not shown). The third cam 4421 is mounted on the first driving shaft 411 or the second driving shaft 412 (in particular, in the embodiment shown in fig. 4, the third cam 4421 is mounted on the second driving shaft 412) and rotates in synchronization with the first driving shaft 411 or the second driving shaft 412. The fifth roller is installed on the third swing arm 441 and is in rolling fit with the third cam 4421, so that the third cam 4421 drives the third swing arm 441 to swing around the ninth end b9 through the fifth roller in the rotating process. In this way, the rotation of the first driving shaft 411 or the second driving shaft 412 drives the third cam 4421 to rotate, so that the fifth roller rolls along the third cam 4421, and the third cam 4421 drives the third swing arm 441 to swing around the ninth end b9 via the fifth roller. It is understood that the fifth roller is located between the ninth end b9 and the tenth end b10 of the third swing arm 441, and preferably, may be located substantially at the middle of the third swing arm 441.

Further, the third cam structure further includes a third elastic member 4423, one end of the third elastic member 4423 is fixed relative to the third supporting frame 51, and the other end is connected to the tenth end b10 of the third swing arm 441, for providing a pre-tightening force that the fifth roller is pressed against the third cam 4421, so that the fifth roller and the third cam 4421 are always kept in rolling fit. Alternatively, the third elastic member 4423 may employ a spring. An end of the third elastic member 4423 remote from the third swing arm 441 is connected to the base plate 10.

In specific embodiments, the stopping assembly 52 has a third guide groove 5231, and the third guide groove 5231 extends in the first direction X. The third link structure 443 includes a third link 4431, a third driving lever 4432, and a sixth roller 4433. The third link 4431 is rotatably provided with respect to the third support bracket 51 and has an eleventh end b11 and a twelfth end b12. One end of the third driving lever 4432 is hinged to the tenth end b10 of the third swing arm 441, and the other end of the second driving lever 4332 is hinged to the tenth end b11 of the third link 4431. The sixth roller 4433 is rotatably coupled to the tenth end b12 of the third link 4431 and is in rolling engagement with the third guide groove 5231. Thus, when the third swing arm 441 swings, the third swing arm 441 drives the third link 4431 to rotate through the third driving rod 4432, and the third link 4431 drives the sixth roller 4433 to move along the third guiding groove 5231 of the position-limiting assembly 52, so as to drive the position-limiting assembly 52 to move along the third direction Z.

Further, the position limiting assembly 52 further includes a third guiding seat 523 connected to the third sliding seat 522, and the third guiding groove 5231 is formed on the third guiding seat 523. Thus, when the third link 4431 rotates, the sixth roller 4433 drives the third sliding seat 522 to move along the third direction Z, so that the limiting portion 521 can move along the third direction Z.

Further, a ninth end b9 of the third swing arm 441 is mounted on the first swing shaft 4211 or the second swing shaft 4311 through a bearing, so that the third swing arm 441 can swing about the first swing shaft 4211 or the second swing shaft 4311 by the third cam 4421. Of course, in other embodiments, the third swing arm 441 may not share the first swing shaft 4211 or the second swing shaft 4311 with the first swing arm 421 or the second swing arm 431, or a third swing shaft may be provided on the base plate 10, and the ninth end b9 of the third swing arm 441 is mounted on the third swing shaft through a bearing, which is not limited herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (19)

1. A centering device for positioning an element housed in a housing, the centering device comprising:

the first positioning mechanism comprises a first positioning component; and

the second positioning mechanism comprises a second positioning assembly, and the second positioning assembly and the first positioning assembly are oppositely arranged in the first direction so as to form a positioning station for the accommodating part to pass through between the first positioning assembly and the second positioning assembly;

wherein the first positioning assembly and the second positioning assembly are configured to be able to approach or move away from each other; in the process that the first positioning assembly and the second positioning assembly are close to each other, the first positioning assembly and the second positioning assembly can clamp the accommodating part located at the positioning station together and are respectively abutted with two ends of the element in the first direction.

2. The centering device of claim 1, wherein a side of said first positioning component facing said second positioning component has a first positioning portion having a first positioning surface and a second positioning surface; one side of the second positioning assembly, which faces the first positioning assembly, is provided with a second positioning part, and the second positioning part is provided with a third positioning surface and a fourth positioning surface;

the first positioning surface and the third positioning surface are used for being respectively abutted with two ends of the accommodating component in the first direction, and the second positioning surface and the fourth positioning surface are used for being respectively abutted with two ends of the element in the first direction.

3. The centering device as claimed in claim 2, wherein said first positioning mechanism further comprises a first supporting frame, said first positioning assembly comprises a first sliding seat and a first mounting seat; the first sliding seat is movably connected to the first support frame along the first direction, the first installation seat is arranged on the first sliding seat, and the first positioning part is arranged on the first installation seat;

the position of the first installation seat relative to the first sliding seat in a second direction is adjustable, and the second direction is perpendicular to the first direction.

4. The centering device as claimed in claim 2, wherein said second positioning mechanism comprises a second supporting frame, said second positioning assembly comprises a second slide carriage movably connected to said second supporting frame along said first direction X and a second mounting seat disposed on said second slide carriage, and said second positioning portion is disposed on said second mounting seat.

5. The centering device of claim 4, wherein said second positioning assembly further comprises a first blocking portion and a first buffering elastic member, said second positioning portion is movably connected to said second mounting seat along said first direction, said first blocking portion is mounted on said second mounting seat, said first buffering elastic member abuts against said second positioning portion and said first blocking portion for providing an elastic force that makes said second positioning portion have a moving tendency toward said first positioning assembly.

6. The centering device as claimed in claim 4, wherein said second positioning assembly further comprises a second stopper connected to said second sliding base and a second elastic buffer abutting against said second stopper and said second mounting seat for providing an elastic force to make said second mounting seat have a moving tendency toward said first positioning assembly.

7. The centering device of any one of claims 1 to 6, further comprising a drive mechanism, said drive mechanism comprising a drive assembly, a first transmission assembly, and a second transmission assembly, said first transmission assembly being drivingly connected between said drive assembly and said first positioning assembly, said second transmission assembly being drivingly connected between said drive assembly and said second positioning assembly.

8. The centering device of claim 7, wherein said drive assembly comprises a first drive shaft, a second drive shaft, a transmission structure, and a rotary drive;

the first driving shaft and the second driving shaft are both rotatably arranged, and the transmission structure is in transmission connection between the first driving shaft and the second driving shaft so as to enable either one of the first driving shaft and the second driving shaft to rotate while the other one of the first driving shaft and the second driving shaft rotates; the rotary driving piece is in driving connection with the first driving shaft or the second driving shaft;

wherein the first transmission assembly is in transmission connection between the first driving shaft and the first positioning assembly, and the second transmission assembly is in transmission connection between the second driving shaft and the second positioning assembly.

9. The centering device of claim 8, wherein said first transmission assembly comprises a first swing arm having a first end and a second end, a first cam structure rotatably disposed about said first end, and a first linkage structure drivingly connected between said first drive shaft and said first swing arm to translate rotational movement of said first drive shaft into oscillatory movement of said first swing arm about said first end;

the second end is in transmission connection with the first connecting rod structure, and the first connecting rod structure is in transmission connection with the first positioning assembly so as to convert the swinging motion of the first swing arm into the movement of the first positioning assembly along the first direction.

10. The centering device of claim 9, wherein said first cam structure includes a first cam and a first roller, said first cam being mounted on said first drive shaft and rotating in synchronization with said first drive shaft; the first roller is installed on the first swing arm and is in rolling fit with the first cam, so that the first cam drives the first swing arm to swing around the first end through the first roller in the rotating process.

11. The centering device of claim 9, wherein said first positioning member has a first guide groove extending in a third direction intersecting said first direction;

the first connecting rod structure comprises a first connecting rod, a first driving rod and a second roller, and the first connecting rod is rotatably arranged and is provided with a third end and a fourth end; one end of the first driving rod is hinged with the second end, and the other end of the first driving rod is hinged with the third end;

the second roller is rotatably connected to the fourth end and is in rolling fit with the first guide groove.

12. The centering device of claim 8, wherein said second positioning assembly comprises a second swing arm having a fifth end and a sixth end, a second cam structure rotatably disposed about said fifth end, and a second linkage structure drivingly connected between said second drive shaft and said second swing arm to translate rotational movement of said second drive shaft into oscillatory movement of said second swing arm about said fifth end;

the sixth end is in transmission connection with the second connecting rod structure, and the second connecting rod structure is in transmission connection with the second positioning assembly so as to convert the swinging motion of the second swing arm into the movement of the second positioning assembly along the first direction.

13. The centering device of claim 12, wherein said second cam structure includes a second cam and a third roller, said second cam being mounted on said second drive shaft and rotating synchronously with said second drive shaft; the third roller is installed on the second swing arm and is in rolling fit with the second cam, so that the second cam drives the second swing arm to swing around the fifth end through the third roller in the rotating process.

14. The centering device of claim 12, wherein said second positioning assembly has a second guide slot extending in a third direction that intersects said first direction;

the second connecting rod structure comprises a second connecting rod, a second driving rod and a fourth roller, and the second connecting rod is rotatably arranged and provided with a seventh end and an eighth end; one end of the second driving rod is hinged with the sixth end, and the other end of the second driving rod is hinged with the seventh end;

the fourth roller is rotatably connected to the eighth end and is in rolling fit with the second guide groove.

15. The centering device as claimed in claim 8, further comprising a limiting mechanism, wherein said limiting mechanism comprises a third supporting frame and a limiting component movably connected to said third supporting frame along a third direction, said limiting component has a limiting portion located at one side of said positioning station in said third direction, and said third direction is perpendicular to said first direction;

the limiting component can move to a limiting position along the third direction, so that the limiting part limits the accommodating part positioned at the positioning station in the third direction.

16. The centering device of claim 15, wherein said drive mechanism further comprises a third transmission assembly drivingly connected between said drive assembly and said stop assembly.

17. The centering device of claim 16, wherein the third transmission assembly comprises a third swing arm, a third cam structure, and a third link structure; the third swing arm is provided with a ninth end and a tenth end, and the ninth end is rotatably arranged relative to the third supporting frame;

the third cam structure is in transmission connection between the third swing arm and the first drive shaft or the second drive shaft to convert the rotary motion of the first drive shaft or the second drive shaft into the swinging motion of the third swing arm around the ninth end;

the tenth end is in transmission connection with the third connecting rod structure, and the third connecting rod structure is in transmission connection with the limiting assembly so as to convert the swinging motion of the third swing arm into the movement of the limiting assembly along the third direction.

18. The centering device of claim 17, wherein said third cam structure comprises a third cam and a fifth roller, said third cam being mounted on said first drive shaft or said second drive shaft and rotating synchronously with said first drive shaft or said second drive shaft; the fifth roller is installed on the third swing arm and is in rolling fit with the third cam, so that the third cam drives the third swing arm to swing around the ninth end through the fifth roller in the rotating process.

19. The centering device of claim 17, wherein said stop assembly has a third guide slot, said third guide slot extending in said first direction;

the third connecting rod structure comprises a third connecting rod, a third driving rod and a sixth roller; the third connecting rod is rotatably arranged relative to the third supporting frame and is provided with a tenth end and a twelfth end; one end of the third driving rod is hinged with the tenth end, and the other end of the second driving rod is hinged with the eleventh end; the sixth roller is rotatably connected to the twelfth end and is in rolling fit with the third guide groove.

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