CN216624361U - Clamping device, carrier and carrier for tab welding - Google Patents

Abstract

The utility model discloses a clamping device (200), a carrier (100) and a carrier (100a) for tab welding, wherein the clamping device (200) comprises: a first clamping jaw (201) and a second clamping jaw (202); a first guide assembly (203) having a first guide (206), a first mount (207) movable along the first guide (206), and a second mount (208), the first jaw (201) being supported by the first mount (207) and the second jaw (202) being supported by the second mount (208); the first driving piece (204) is provided with a first guide part (209) which enables the first clamping jaw (201) and the second clamping jaw (202) to be far away from or close to each other along with the driving of the first driving piece (204); the first elastic component (205) enables the first clamping jaw (201) and the second clamping jaw (202) to approach each other. The clamping device (200) can keep a first clamping jaw (201) and a second clamping jaw (202) in a clamping state without external power.

Description

Clamping device, carrier and carrier for tab welding

Technical Field

The utility model relates to the technical field of clamps, in particular to a clamping device, a carrier and a carrier for tab welding.

Background

The jig is widely used in the production of various parts, and for example, in a welding apparatus, the jig can be used to hold and position a welding object, thereby improving the quality of welding.

For example, as a structure of a battery such as an aluminum-case battery constituting a power battery module for an electric vehicle, it is common to include an aluminum case, a cell housed in the aluminum case, a top cover encapsulating the aluminum case, and the like. The top cover is provided with a pole post and the like which are connected with the pole lugs (positive and negative poles) of the battery cell in a welding mode.

When welding the pole on the top cover and the pole ear of the battery core, the top cover and the like are usually positioned by using a positioning clamp. Known positioning jigs are generally provided on a single machine, driven by, for example, an air cylinder, a motor, or the like. However, with the generation of new structures for batteries, the replacement of production lines for producing power batteries, and the like, known positioning jigs and the like are not generally applicable to new battery structures or new production equipment.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the problems associated with the prior art. To this end, the present invention proposes a clamping device capable of maintaining a clamped state without external power. In addition, the utility model also provides a carrier with the clamping device and a carrier for welding the lugs.

A clamping device according to a first aspect of the utility model comprises: the clamping device comprises a first clamping jaw and a second clamping jaw, wherein the first clamping jaw and the second clamping jaw are close to or far away from each other along a first direction; a first guide assembly having a first guide extending in the first direction, a first mount and a second mount, the first mount and the second mount being movable along the first guide, respectively, the first jaw being supported by the first mount and the second jaw being supported by the second mount; the first driving piece is positioned between the first clamping jaw and the second clamping jaw and is in transmission connection with the first clamping jaw and the second clamping jaw respectively, the first driving piece is driven to extend or retract along a second direction orthogonal to the first direction, and a first guide part is arranged on the first driving piece, is formed to enable the first clamping jaw and the second clamping jaw to be far away from each other along the first direction when the first driving piece is driven to extend and is formed to allow the first clamping jaw and the second clamping jaw to be close to each other along the first direction when the first driving piece is driven to retract; a first elastic member configured to apply a force to the first jaw and the second jaw so that the first jaw and the second jaw are close to each other in the first direction.

The clamping device according to the first aspect of the present invention has the following advantageous effects: since the first elastic member biases the first jaw and the second jaw so as to approach each other in the first direction, the first jaw and the second jaw can be held in a clamped state without external power.

In some embodiments, the first guide portion includes: a first guide surface provided on an opposite side of the first driver from the first jaw; a second guide surface disposed on an opposite side of the first driver from the second jaw.

In some embodiments, the distance between the first and second guide surfaces in the first direction tapers in the direction of extension of the first drive member.

In some embodiments, further comprising: a first rolling member which is in rolling connection with the first clamping jaw and abuts against the first guide surface; and the second rolling piece is in rolling connection with the second clamping jaw and abuts against the second guide surface.

In some embodiments, the first resilient component comprises: a first elastic member that is provided on one side of the first jaw and biases the first roller so as to keep the first roller in contact with the first guide surface; and a second elastic member that is provided on one side of the second jaw and biases the second roller so that the second roller is held in contact with the second guide surface.

In some embodiments, further comprising: a first blocking member configured to block the first driving member in an extending direction of the first driving member; a second blocking member disposed to block the first driving member in a retraction direction of the first driving member.

The clamping device according to the second aspect of the present invention is a clamping device for clamping a top cover of a power battery in a rectangular parallelepiped shape, wherein tab connecting plates for connecting tabs of a battery cell of the power battery are respectively provided at two ends of the top cover in a length direction, and the clamping device includes: the first clamping jaw and the second clamping jaw are close to or far away from each other along a first direction parallel to the length direction of the top cover, and when the first clamping jaw and the second clamping jaw are close to each other, the top cover can be clamped; a first guide assembly having a first guide extending in the first direction, a first mount and a second mount, the first mount and the second mount being movable along the first guide, respectively, the first jaw being supported by the first mount and the second jaw being supported by the second mount; the first driving piece is positioned between the first clamping jaw and the second clamping jaw and is in transmission connection with the first clamping jaw and the second clamping jaw respectively, the first driving piece is driven to extend or retract along a second direction orthogonal to the first direction, and a first guide part is arranged on the first driving piece, is formed to enable the first clamping jaw and the second clamping jaw to be far away from each other along the first direction when the first driving piece is driven to extend and is formed to allow the first clamping jaw and the second clamping jaw to be close to each other along the first direction when the first driving piece is driven to retract; a first elastic member configured to apply a force to the first jaw and the second jaw so that the first jaw and the second jaw are close to each other in the first direction.

According to the clamping device of the second aspect of the utility model, the following beneficial effects are achieved: since the first elastic member biases the first jaw and the second jaw so as to approach each other in the first direction, the first jaw and the second jaw can be held in a state of gripping the top cover of the power battery without external power.

According to a third aspect of the present invention, a carrier to be carried in a line to transfer a workpiece placed on the carrier, includes: the clamping device is arranged on the base plate, and the workpiece is clamped by the clamping device.

According to the vehicle of the third aspect of the present invention, the following advantages are provided: since the gripping device can maintain the gripping state without external power, it is not necessary to additionally provide driving power to the carrier, and the carrier can be easily transported in a circulating manner on the production line.

A tab welding carrier according to a fourth aspect of the present invention is a tab welding carrier for mounting a cell of a rectangular parallelepiped power battery, the cell having two tabs respectively provided on both sides in a longitudinal direction of the cell, the tab welding carrier being transported in a line to transfer the cell, the tab welding carrier including: a cell holding section that holds the cell; the clamping device clamps the top cover and enables the lug connecting sheets on the two sides of the top cover in the length direction to be respectively contacted with the lugs on the two sides of the battery cell in the length direction.

According to the carrier for welding the tab of the fourth aspect of the utility model, the following beneficial effects are achieved: since the clamping device can maintain the clamping state without external power, the driving power does not need to be additionally arranged on the carrier for welding the lug, and the carrier for welding the lug can be easily circularly transported on the production line.

In some embodiments, further comprising: a second guide assembly having a second guide member extending in a third direction orthogonal to the first direction and the second direction, respectively, and a third mount member movable along the first guide member, respectively, the clamp device being supported by the third mount member; and a second elastic assembly for applying force to the clamping device in such a manner that the clamping device approaches the cell holding portion.

Drawings

Fig. 1 is a schematic view of a front view of an embodiment of a carrier with a clamping device of the present invention.

Fig. 2 is a schematic view of a carrier with the clamping device of the present invention in a rear view.

Fig. 3 is a partially enlarged view of a point a in fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present embodiment, and are not to be construed as limiting the present embodiment.

In the description of the present embodiment, it should be understood that the orientation or positional relationship indicated by referring to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present embodiment and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present embodiment.

In the description of the present embodiment, a plurality of the terms are one or more, a plurality of the terms are two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present embodiment, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present embodiment in combination with the specific contents of the technical solutions.

Fig. 1 is a schematic view of a front view of a carrier 100 with a chucking device 200. Fig. 2 is a schematic view of a rear view of the carrier 100 with the clamping device 200. Fig. 3 is a partially enlarged view of a point a in fig. 1. In fig. 3, for convenience of illustration, only a main part in a partially enlarged view is shown. In the following description, for convenience of explanation, the left-right direction in the drawings is referred to as a "first direction", the up-down direction orthogonal to the left-right direction in the drawings is referred to as a "second direction", and the front-back direction orthogonal to the left-right direction and the up-down direction in the drawings is referred to as a "third direction".

Referring to fig. 1 to 3, a clamping device 200 according to embodiment 1 includes: a first clamping jaw 201, a second clamping jaw 202, a first guide component 203, a first driving component 204 and a first elastic component 205. The first clamping jaw 201 and the second clamping jaw 202 are close to or far away from each other along the first direction. The first guide assembly 203 has a first guide 206, a first mount 207, and a second mount 208. The first guide 206 extends in a first direction. The first mounting member 207 and the second mounting member 208 are respectively movable along the first guide member 206. The first jaw 201 is supported to a first mount 207. The second jaw 202 is supported to a second mount 208. The first driving member 204 is located between the first clamping jaw 201 and the second clamping jaw 202 and is in transmission connection with the first clamping jaw 201 and the second clamping jaw 202 respectively. The first driver 204 is driven to extend or retract in a second direction orthogonal to the first direction. The first driving member 204 is provided with a first guide portion 209. The first guide portion 209 is formed to move the first jaw 201 and the second jaw 202 away from each other in the first direction when the first driver 204 is driven to extend (in the upward direction in the drawing). The first guide 209 is also formed to allow the first jaw 201 and the second jaw 202 to approach each other in the first direction when the first driver 204 is driven to retract (in the downward direction in the drawing). The first elastic member 205 is provided to urge the first jaw 201 and the second jaw 202 toward each other in the first direction so that the first jaw 201 and the second jaw 202 are brought close to each other.

According to the clamping device 200 of the present embodiment, since the first elastic member 205 biases the first jaw 201 and the second jaw 202 so as to approach each other in the first direction, the first jaw 201 and the second jaw 202 can be held in the clamped state without external power. Specifically, for example, in a state where the first driving member 204 is not subjected to an external force, the first driving member 204 is in a retracted state (in a lower direction in the drawing), and the first jaw 201 and the second jaw 202 are brought close to each other in the first direction by the first elastic member 205. When the first driving member 204 is driven to extend by an external force, the first jaw 201 and the second jaw 202 move away from each other in the first direction by the first guiding portion 209 against the elastic force of the first elastic component 205. Thereby, the first and second jaws 201 and 202 are in the open state, and the workpiece 700 can be clamped. Accordingly, it is not necessary to additionally add power for driving the clamping device 200 to, for example, the carrier 100 (described later), but it is only necessary to install a driving device (for example, an air cylinder, a motor, etc.) for opening the first clamping jaw 201 and the second clamping jaw 202 at a predetermined position of, for example, a production line.

The chucking device 200 of the present embodiment can be applied to, for example, the carrier 100 of the line. Specifically, carriers 100 due to the flow line typically need to be handled in cycles. On the other hand, since the driving force of the cylinder, the motor, etc. needs to be connected to the air tube, the cable, etc., it is difficult to directly apply the driving force to the carrier 100 of the assembly line. In the present embodiment, since the first and second jaws 201 and 202 can be held in the clamped state (initial state or closed state) by the first elastic member 205, it is not necessary to mount these components requiring connection of an air tube, a cable, or the like on the carrier 100. Thus, the chucking device 200 according to the present embodiment can be directly mounted on the carrier 100 of the assembly line.

The type of the workpiece 700 which can be gripped by the gripping device 200 of the present embodiment is not particularly limited, and examples thereof include: an aluminum case and a top cover 701 of a power battery having a rectangular parallelepiped shape (a cube is also regarded as a special rectangular parallelepiped). The workpiece 700 may be a case or a lid of another component.

The chucking device 200 of the present embodiment may include, for example, a first base 210, and the first base 210 may be mounted on, for example, the substrate 101 as the carrier 100. The first guide assembly 203 is mounted on the first base 210. The first guide member 203 is not particularly limited in its structure as long as it can linearly guide the first jaw 201 and the second jaw 202. For example, the first guide assembly 203 may be selected from commercially available linear slide assemblies, namely: a linear slide is used as the first guide 206. The linear slide assembly further includes, for example, two sliders, and the two sliders are used as the first mounting section 207 and the second mounting section 208, respectively. By using the linear slide assembly as the first guide assembly 203, the sliding smoothness of the first guide assembly 203 can be improved, and the first clamping jaw 201 and the second clamping jaw 202 are prevented from being stuck when being opened (separated from each other) or closed (moved close to each other).

The first and second jaws 201 and 202 are not particularly limited in structure as long as they can clamp the workpiece 700, and for example, the first and second jaws 201 and 202 may each have a substantially L-shape. The first jaw 201 and the second jaw 202 may be formed by integral molding or may be assembled by a plurality of parts. The first jaw 201 may be mounted directly on a slide as the first mount 207. In addition, to facilitate the driving connection between the first clamping jaw 201 and other components (e.g., the first driving member 204, the first resilient assembly 205, etc.), a first connecting plate 211 may be mounted on the first mounting member 207, and the first clamping jaw 201 may be adjustably mounted to the first connecting plate 211 in a first direction. Likewise, a second web 212 may be mounted to the slide as the second mount 208, and the second jaw 202 may be adjustably mounted to the second web 212 in the first direction. By arranging the first and second jaws 201 and 202 to be adjustable in the first direction, respectively, the initial positions of the first and second jaws 201 and 202 can be easily adjusted according to the type of workpiece 700.

The first drive member 204 may be mounted to the first base 210 by a linear slide assembly (not shown) that is guided in an up-down direction. The first driving member 204 may be, for example, a plate-like member. The first guide 209 may be formed directly at the first driver 204 by machining. For example, a predetermined trajectory (described later) may be directly machined on both left and right sides of the first driving member 204 to form the first guide portion 209. The first and second jaws 201 and 202 may abut against the first guide 209, respectively, and when the first jaw 201 is attached to the first connection plate 211 and the second jaw 202 is attached to the second connection plate 212, the first connection plate 211 and the second connection plate 212 may abut against the first guide 209, respectively. When the first driving member 204 is driven in the up-down direction by, for example, a first power unit (not shown) installed at a specific position of the line, the first jaw 201 and the second jaw 202 move closer to or away from each other along with the change of the trajectory of the first guide 209.

With continued reference to fig. 3, in some embodiments, to simplify the structure of the first guide 209, the first guide 209 may include: a first guide surface 213 and a second guide surface 214. Wherein the first guide surface 213 is arranged on the opposite side of the first driver 204 from the first jaw 201. The second guide surface 214 is disposed on the opposite side of the first driver 204 from the second jaw 202. Accordingly, the first jaw 201 (or the first connecting plate 211 or a first roller 215 described later) can directly abut against the first guide surface 213, and the distance between the first jaw 201 and the first guide surface 213 can be shortened, so that the entire clamping device 200 can be made more compact. Likewise, since the second guide surface 214 is provided on the opposite side of the first driver 204 from the second jaw 202, the second jaw 202 (or the second connecting plate 212 or a second rolling member 216 described later) can directly abut against the second guide surface 214.

In some embodiments, in order to easily achieve opening (moving away from each other) or closing (moving closer to each other) of the first jaw 201 and the second jaw 202, a distance between the first guide surface 213 and the second guide surface 214 in the first direction is gradually reduced in an extending direction (a direction from bottom to top in the drawing) of the first driving member 204. The first guide surface 213 and the second guide surface 214 have substantially the same trajectory, and the first guide surface 213 will be mainly described herein as an example, and the second guide surface 214 will be described only when necessary. The first guide surface 213 is, for example, substantially circular arc-shaped. The first guide surface 213 gradually decreases from the middle of the first driver 204 in the left-right direction along the extending direction of the first driver 204.

When the first driver 204 is at the upper position, the first jaw 201 abuts against the lower portion of the first guide surface 213, and the distance from the first jaw 201 to the middle of the first driver 204 in the left-right direction increases, and at the same time, the second jaw 202 abuts against the lower portion of the second guide surface 214, and the distance from the second jaw 202 to the middle of the first driver 204 in the left-right direction also increases. That is, the first jaw 201 and the second jaw 202 are in the open position.

With continued reference to fig. 1, when the first driver 204 is in the lower position, the first jaw 201 abuts against the upper portion of the first guide surface 213, the distance of the first jaw 201 from the middle of the first driver 204 in the left-right direction decreases, and at the same time, the second jaw 202 abuts against the upper portion of the second guide surface 214, the distance of the second jaw 202 from the middle of the first driver 204 in the left-right direction also decreases. That is, the first jaw 201 and the second jaw 202 are in the closed position.

In this embodiment, the first power device of the assembly line may be disposed below the clamping device 200, for example, and pushes the first driving member 204 from bottom to top. Namely: in this embodiment, the direction in which the first driving member 204 moves from bottom to top is the extending direction. In addition, in other embodiments, the first power device may pull the first driving member 204 from top to bottom, that is: the direction in which the first driving member 204 moves from the top to the bottom can also be used as the extending direction. In this case, it is only necessary to change the guide trajectories of the first guide surface 213 and the second guide surface 214.

With continued reference to fig. 3, in some embodiments, to reduce friction between the first jaw 201 (or the first connecting plate 211) and the second jaw 202 (or the second connecting plate 212), and the first driving member 204, and improve smoothness of the clamping device 200, the clamping device 200 may further include: a first roller 215 and a second roller 216. Wherein the first rolling member 215 and the first jaw 201 are rollingly connected and abut the first guide surface 213. The second roller 216 and the second jaw 202 are rollingly connected to and abut the second guide surface 214. With the first jaw 201 mounted to the first connecting plate 211 and the second jaw 202 mounted to the second connecting plate 212, the first roller 215 may also be mounted to the first connecting plate 211, the second roller 216 may also be mounted to the second connecting plate 212. The first rolling member 215 and the second rolling member 216 may be selected as rollers, respectively, and the first rolling member 215 and the second rolling member 216 may be mounted to the first coupling plate 211 and the second coupling plate 212, respectively, by a known mounting means.

With continued reference to fig. 1 and 3, as described above, the first elastic assembly 205 is configured to apply a force to the first jaw 201 and the second jaw 202 so as to cause the first jaw 201 and the second jaw 202 to approach each other in the first direction. In some embodiments, the first elastic component 205 may include: a first elastic member 217 and a second elastic member 218. The first elastic member 217 may be provided on one side of the first jaw 201, and may urge the first roller 215 so that the first roller 215 is held in contact with the first guide surface 213. The second elastic member 218 may be provided on one side of the second jaw 202, and may urge the second roller 216 in such a manner as to hold the second roller 216 in abutment with the second guide surface 214. The first elastic member 217 and the second elastic member 218 have substantially the same structure, and only the first elastic member 217 will be described as an example, and only the second elastic member 218 will be referred to as necessary. Specifically, the first elastic member 217 may be, for example, a compression spring. One end of the first elastic member 217 abuts against the first connection plate 211, and the other end of the first elastic member 217 is fixed, for example, to a side of the first base 210 away from the first connection plate 211 in the left direction. Thereby, the first elastic member 217 can push the first connection plate 211 in the right direction, so that the first rolling member 215 mounted on the first connection plate 211 is kept abutting against the first guide surface 213. Further, the second elastic member 218 may also push the second connecting plate 212 in the left direction, thereby keeping the second rolling member 216 mounted on the second connecting plate 212 abutting against the second guide surface 214.

Thereby, the first elastic member 217 and the second elastic member 218 abut the first connection plate 211 and the second connection plate 212, respectively, in a compressed state. After power is removed from, for example, the first power means of the line, the first and second elastic members 217 and 218 retract the first driving member 204 by driving the first connecting plate 211 against the first guide surface 213 and the second connecting plate 212 against the second guide surface 214. Thus, after the power of the first power means of the assembly line is removed, the first and second elastic members 217 and 218 restore the first and second jaws 201 and 202 to the closed state (i.e., the clampable state).

In addition, although the first elastic member 205 has been described above as having the first elastic member 217 and the second elastic member 218, the present invention is not limited thereto. In other embodiments, the first elastic assembly 205 may also include a tension spring, and both ends of the tension spring respectively pull the first connecting plate 211 and the second connecting plate 212, so that the first clamping jaw 201 and the second clamping jaw 202 can be kept in the closed state (i.e., the clamping state) without power from the outside.

With continuing reference to figure 3 and with additional reference to figure 2, in some embodiments, to enable precise control of the positional accuracy of the opening (away from each other) or closing (toward each other) of the first jaw 201 and the second jaw 202, the clamping device 200 may further comprise: a first stop 219 and a second stop 220, wherein the first stop 219 is configured to stop the first driver 204 in the extending direction of the first driver 204, and the second stop 220 is configured to stop the first driver 204 in the retracting direction of the first driver 204. The first blocking member 219 and the second blocking member 220 may be mounted on the first base 210, respectively, for example. The first stopper 219 is installed above the first base 210, for example, and limits the upward travel of the first driving member 204. The second stopper 220 is installed below the first base 210, for example, and limits a downward movement stroke of the first driving member 204. Thus, the stroke of the first and second jaws 201 and 202 that can be opened or closed can be limited by limiting the stroke of the first driver 204 driven in the up-down direction, and the positional accuracy of the first and second jaws 201 and 202 that are opened or closed can be thereby improved.

With reference to fig. 1 and 2, a top cover 701 of a power battery having a rectangular parallelepiped shape will be described as an example of the clamping device 200. Specifically, the power battery (not shown) having a rectangular parallelepiped shape includes, for example, a battery cell (not shown) and a top cover 701. The two ends of the top cover 701 in the length direction are respectively provided with a tab connecting sheet 702 for connecting with a tab of a battery cell of the power battery. Specifically, the clamping device 200 for clamping the top cover 701 may include, for example: the method comprises the following steps: a first clamping jaw 201, a second clamping jaw 202, a first guide component 203, a first driving component 204 and a first elastic component 205. The first clamping jaw 201 and the second clamping jaw 202 are close to or away from each other along a first direction parallel to the length direction of the top cover 701, and when the first clamping jaw 201 and the second clamping jaw 202 are close to each other, the top cover 701 can be clamped. The first guide assembly 203 has a first guide 206, a first mount 207, and a second mount 208. The first guide 206 extends in a first direction. The first mounting member 207 and the second mounting member 208 are respectively movable along the first guide member 206. The first jaw 201 is supported to a first mount 207. The second jaw 202 is supported to a second mount 208. The first driving member 204 is located between the first clamping jaw 201 and the second clamping jaw 202 and is in transmission connection with the first clamping jaw 201 and the second clamping jaw 202 respectively. The first drive member 204 is driven to extend or retract in a second direction orthogonal to the first direction. The first driving member 204 is provided with a first guide portion 209. The first guide 209 is formed to move the first jaw 201 and the second jaw 202 away from each other in the first direction when the first driver 204 is driven to extend. The first guide 209 is also formed to allow the first jaw 201 and the second jaw 202 to approach each other in the first direction when the first driver 204 is driven to retract. The first elastic member 205 is provided to urge the first jaw 201 and the second jaw 202 toward each other in the first direction so that the first jaw 201 and the second jaw 202 are brought close to each other.

In the present embodiment, since the first elastic member 205 biases the first jaw 201 and the second jaw 202 so as to approach each other in the first direction, the first jaw 201 and the second jaw 202 can be held in a state of sandwiching the top cover 701 of the power battery without external power. Thus, the clamping device 200 can be applied to the carrier 100 of an assembly line for welding the tabs of the battery, for example.

Specifically, the clamping device 200 can be used in the tab welding carrier 100a, for example. The tab welding carrier 100a according to the present embodiment is used, for example, to place a battery cell (not shown) of a rectangular parallelepiped power battery and convey the battery cell in a line. The battery cell carried by the tab welding carrier 100a has two tabs, and is different from the battery cell of the related art in that the two tabs of the battery cell carried by the tab welding carrier 100a are respectively provided on both sides in the longitudinal direction of the battery cell (that is, opposite to the tab connecting piece 702 in the left-right direction in fig. 2).

With continued reference to fig. 1 and 2, the tab welding carrier 100a according to the present embodiment may include: the cell holding portion 102, and the clamping device 200 of each of the above embodiments. The cell holder 102 holds a cell. The clamping device 200 clamps the top cover 701, and makes the tab connecting pieces 702 on both sides of the top cover 701 in the longitudinal direction contact with the tabs on both sides of the battery cell in the longitudinal direction, respectively.

According to the tab welding carrier 100a of the present embodiment, since the clamping device 200 can maintain the clamped state without external power, it is not necessary to additionally provide driving power to the tab welding carrier 100a, and the tab welding carrier 100a can be easily transported in a circulating manner on a production line.

The cell holder 102 may hold a cell by an existing holding device, for example. The clamping device 200 is provided on the front side of the cell holding portion 102, for example, in the front-rear direction. The cells may be fed to the cell holder 102 by an existing automatic feeding device such as a robot, and similarly, the top cover 701 may be fed to the clamping device 200 by an existing automatic feeding device such as a robot. The position between the clamping device 200 and the cell holding portion 102 may be set as appropriate depending on the position of welding of the tab. That is, the clamping device 200 may be configured such that the tab connecting pieces 702 on both sides in the longitudinal direction of the top cover 701 can contact the tabs in a state of clamping the top cover 701, thereby achieving accurate welding.

In some embodiments, the welded cells and caps 701 are blanked for ease of existing automatic blanking apparatus, such as robots and the like. The tab welding carrier 100a according to the present embodiment may further include a second guide member 221 and a second elastic member 224. As the second guide member 221, for example, a second guide member 222 and a third mounting member 223 may be provided. The second guide 222 extends in a third direction orthogonal to the first direction and the second direction, respectively. The third mount 223 is movable along the first guide 206. The clamping device 200 is supported to the third mount 223. That is, the first base 210 of the clamping device 200 is mounted on the third mount 223. The second elastic member 224 urges the clamping device 200 so that the clamping device 200 approaches the cell holding portion 102. Specifically, the second guide member 221 and the second elastic member 224 may be mounted on the substrate 101 of the carrier 100, for example. As the second guide member 221, reference may be made to the first guide member 203, and for example, a linear slide member may be used as the second guide member 221. Likewise, the second elastic element 224 may also be arranged with reference to the first elastic element 205.

By providing the second guide member 221 and the second elastic member 224, the clamping device 200 can be held close to the cell holding portion 102. Specifically, for example, a second power unit may be provided at a preset position of the assembly line (e.g., a position close to the first power unit), and the second power unit drives the clamping device 200 away from the cell holding part 102 while the first power unit drives the clamping device 200 to open. In addition, after the power of the second power means is removed, the clamping means 200 can be restored to the original position by the second elastic member 224.

Although the description has been given by taking the example in which the clip device 200 is applied to the tab welding carrier 100a, the present invention is not limited thereto. As described above, the holding device 200 of the above embodiments can be mounted on various carriers 100 for being carried in a production line as needed. These carriers 100 may include, for example: the clamping device 200 is provided on the substrate 101, and the workpiece 700 is clamped by the clamping device 200 on the substrate 101. Since the chucking device 200 can maintain the chucking state without external power, it is not necessary to additionally provide driving power to the carrier 100, and thus the cyclic conveyance of the carrier 100 can be easily performed on the production line.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present implementation. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present embodiments have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. Clamping device (200), characterized in that it comprises:

a first clamping jaw (201) and a second clamping jaw (202), wherein the first clamping jaw (201) and the second clamping jaw (202) are close to or far away from each other along a first direction;

a first guide assembly (203) having a first guide (206), a first mount (207) and a second mount (208), the first guide (206) extending in the first direction, the first mount (207) and the second mount (208) being respectively movable along the first guide (206), the first jaw (201) being supported by the first mount (207) and the second jaw (202) being supported by the second mount (208);

a first driving part (204) which is positioned between the first clamping jaw (201) and the second clamping jaw (202) and is in transmission connection with the first clamping jaw (201) and the second clamping jaw (202), the first driving part (204) is driven to extend or retract along a second direction orthogonal to the first direction, a first guiding part (209) is arranged on the first driving part (204), the first guiding part (209) is formed to enable the first clamping jaw (201) and the second clamping jaw (202) to be far away from each other along the first direction when the first driving part (204) is driven to extend, and is formed to enable the first clamping jaw (201) and the second clamping jaw (202) to be close to each other along the first direction when the first driving part (204) is driven to retract;

a first elastic member (205) configured to urge the first jaw (201) and the second jaw (202) toward each other in the first direction so that the first jaw (201) and the second jaw (202) are brought close to each other.

2. The clamping device (200) of claim 1, wherein the first guide (209) comprises:

a first guide surface (213) provided on a side of the first driver (204) opposite the first jaw (201);

a second guide surface (214) disposed on an opposite side of the first driver (204) from the second jaw (202).

3. The clamping device (200) according to claim 2, wherein the distance between the first guiding surface (213) and the second guiding surface (214) in the first direction is gradually smaller in the protruding direction of the first drive element (204).

4. The clamping device (200) of claim 2 or 3, further comprising:

a first rolling member (215) which is in rolling connection with the first clamping jaw (201) and abuts against the first guide surface (213);

a second rolling member (216) in rolling contact with the second jaw (202) and abutting the second guide surface (214).

5. The clamping device (200) of claim 4, wherein the first resilient assembly (205) comprises:

a first elastic member (217) that is provided on one side of the first jaw (201) and that biases the first roller (215) so that the first roller (215) is held in contact with the first guide surface (213);

and a second elastic member (218) that is provided on one side of the second jaw (202) and that biases the second roller (216) so that the second roller (216) is held in contact with the second guide surface (214).

6. The clamping device (200) of claim 1, further comprising:

a first blocking member (219) arranged to block the first driving member (204) in an extending direction of the first driving member (204);

a second blocking member (220) arranged to block the first drive member (204) in a retraction direction of the first drive member (204).

7. Clamping device (200) for the top cap (701) of the power battery that the centre gripping is the cuboid form, wherein, the length direction's of top cap (701) both ends are provided with respectively be used for with utmost point ear connection piece (702) that the utmost point ear of power battery's electric core is connected, its characterized in that, clamping device (200) include:

a first clamping jaw (201) and a second clamping jaw (202), wherein the first clamping jaw (201) and the second clamping jaw (202) are close to or far away from each other along a first direction parallel to the length direction of the top cover (701), and when the first clamping jaw (201) and the second clamping jaw (202) are close to each other, the top cover (701) can be clamped;

a first guide assembly (203) having a first guide (206), a first mount (207) and a second mount (208), the first guide (206) extending in the first direction, the first mount (207) and the second mount (208) being respectively movable along the first guide (206), the first jaw (201) being supported by the first mount (207) and the second jaw (202) being supported by the second mount (208);

a first driving part (204) which is positioned between the first clamping jaw (201) and the second clamping jaw (202) and is in transmission connection with the first clamping jaw (201) and the second clamping jaw (202), the first driving part (204) is driven to extend or retract along a second direction orthogonal to the first direction, a first guiding part (209) is arranged on the first driving part (204), the first guiding part (209) is formed to enable the first clamping jaw (201) and the second clamping jaw (202) to be far away from each other along the first direction when the first driving part (204) is driven to extend, and is formed to enable the first clamping jaw (201) and the second clamping jaw (202) to be close to each other along the first direction when the first driving part (204) is driven to retract;

a first elastic member (205) configured to urge the first jaw (201) and the second jaw (202) toward each other in the first direction so that the first jaw (201) and the second jaw (202) are brought close to each other.

8. Carrier (100) to be handled in a production line for transferring workpieces (700) placed on said carrier (100), characterized by comprising: a substrate (101), on which substrate (101) a clamping device (200) according to any one of claims 1 to 6 is arranged, the workpiece (700) being clamped by the clamping device (200).

9. Utmost point ear welding is with carrier (100a) for carry the electric core that is the power battery of cuboid form, carried in the assembly line in order to shift electric core, wherein, electric core has two utmost point ears, two utmost point ears set up respectively the length direction's of electric core both sides, its characterized in that includes:

a cell holding unit (102) that holds the cell;

the clamping device (200) of claim 7, clamping the top cover (701) and bringing the tab connecting pieces (702) on both longitudinal sides of the top cover (701) into contact with the tabs on both longitudinal sides of the cell.

10. The tab welding carrier (100a) according to claim 9, wherein the tab welding carrier (100a) further comprises:

a second guide assembly (221) having a second guide member (222) and a third mounting member (223), the second guide member (222) extending in a third direction orthogonal to the first direction and the second direction, respectively, the third mounting member (223) being movable along the first guide member (206), respectively, the clamp device (200) being supported to the third mounting member (223);

a second elastic member (224) that urges the clamping device (200) so that the clamping device (200) approaches the cell holding section (102).

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