CN216503149U - Pre-spot welding positioning device - Google Patents

Abstract

The utility model discloses a pre-spot welding positioning device which comprises a support, a clamp assembly, a mounting plate and a first positioning assembly. The mounting plate is rotatably connected with the support, the mounting plate is provided with a working surface, the working surface is used for placing an aluminum shell with an opening and a top cover covering the opening, the mounting plate is also provided with a first avoiding hole penetrating through the working surface, and the first avoiding hole is used for exposing the contact part of the aluminum shell and the top cover; the clamp assembly is connected to the mounting plate and used for fixing the aluminum shell and the top cover on a working surface so as to determine the relative positions of the aluminum shell and the top cover; the first positioning component comprises two first positioning blocks and two second positioning blocks, the two first positioning blocks are respectively located on two opposite sides of the mounting plate, and the two first positioning blocks are opposite to each other. The pre-spot welding positioning device can complete the pre-spot welding process of the aluminum shell and the top cover in one clamping, the pre-spot welding efficiency is high, and the position precision of the aluminum shell and the top cover before and after overturning is high.

Description

Pre-spot welding positioning device

Technical Field

The utility model relates to the technical field of workpiece positioning devices, in particular to a pre-spot welding positioning device.

Background

In the process of the side welding process of the aluminum shell and the top cover of the lithium ion battery, the aluminum shell and the top cover need to be subjected to pre-spot welding firstly, and then full welding is carried out. In the pre-spot welding process, a special pre-spot welding positioning device is needed to position and compress the top cover and the aluminum shell.

In the prior art, the pre-spot welding positioning device adopts four positioning blocks to position the top cover and the aluminum shell. The pre-spot welding positioning device needs to complete pre-spot welding of one side of the top cover and one side of the aluminum shell, turn over the top cover and the aluminum shell, clamp the top cover and the aluminum shell again for positioning, and finally weld the other side of the top cover and the other side of the aluminum shell. However, the positions of the aluminum shell and the top cover after being turned over are difficult to position, so that the positioning accuracy of the aluminum shell and the top cover which are re-clamped after being turned over is not high. Moreover, the whole pre-spot welding process can be completed by clamping the pre-spot welding positioning device more than twice, so that the use is inconvenient, the pre-spot welding efficiency is low, and the production requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve the problem that the positioning accuracy of the aluminum shell and the top cover is not high after the aluminum shell and the top cover are turned over and clamped again by the pre-spot welding positioning device in the prior art. Therefore, the utility model provides the pre-spot welding positioning device which can complete the pre-spot welding process of the aluminum shell and the top cover in one clamping process, the pre-spot welding efficiency is high, and the position precision of the aluminum shell and the top cover before and after overturning is higher.

According to an embodiment of the present invention, a tack welding positioning device includes:

a support;

the mounting plate is rotatably connected with the support and provided with a working surface, the working surface is used for placing an aluminum shell with an opening and covering the aluminum shell with the opening, the mounting plate is also provided with a first avoiding hole penetrating through the working surface, and the first avoiding hole is used for exposing the contact part of the aluminum shell and the top cover;

the clamp assembly is connected to the mounting plate and used for fixing the aluminum shell and the top cover on the working surface so as to determine the relative positions of the aluminum shell and the top cover;

the first positioning assembly comprises two first positioning blocks and two second positioning blocks, the two first positioning blocks are respectively positioned on two opposite sides of the mounting plate, and the two first positioning blocks are arranged opposite to each other; the two first positioning blocks are connected to the mounting plate, and the second positioning block is connected to the support, or the two first positioning blocks are connected to the support, and the second positioning block is connected to the mounting plate; the second positioning block can be in plug-in fit with any one of the first positioning blocks, so that the mounting plate and the support are relatively fixed.

The pre-spot welding positioning device provided by the embodiment of the utility model at least has the following beneficial effects: after the top cover covers the opening of the aluminum shell, the top cover and the aluminum shell are placed on the working surface of the mounting plate together, the aluminum shell and the top cover are fixed on the working surface under the action of the clamp assembly, and the relative positions of the aluminum shell and the top cover are determined for pre-spot welding; then, the mounting plate and the support are relatively fixed (namely the mounting plate is fixed) through the insertion fit of the second positioning block and one first positioning block, and the spot welding of the contact part of one side of the aluminum shell and one side of the top cover can be completed at the moment; then, the mounting plate is rotated to a position where the second positioning block is in plug fit with the other first positioning block, the mounting plate is turned 180 degrees relative to the support, the positions of the turned aluminum shell and the turned top cover can be accurately positioned, and the aluminum shell and the turned top cover are accurately positioned; then, spot welding of the contact part of the other side of the aluminum shell and the top cover is completed through the first avoidance hole in the mounting plate; the whole spot welding process in advance can both pinpoint aluminium hull and top cap around the mounting panel upset to can improve the position accuracy of spot welding in advance, in addition, use this kind of spot welding positioner in advance, aluminium hull and top cap only need carry out a clamping, and convenient operation can greatly improve spot welding efficiency in advance.

According to some embodiments of the present invention, the clamp assembly includes a first fixing block, a second fixing block, a third fixing block, and a fourth fixing block, the first fixing block, the second fixing block, the third fixing block, and the fourth fixing block are all connected to the mounting plate; the first fixing block and the third fixing block can be close to or far away from each other, the first fixing block is used for abutting against the side face, far away from the top cover, of the aluminum shell, and the third fixing block is used for abutting against the side face, far away from the aluminum shell, of the top cover; the second fixing block and the fourth fixing block can be close to or far away from each other, the second fixing block and the fourth fixing block are respectively used for abutting against two opposite side faces of the aluminum shell, and the second fixing block and the fourth fixing block are also respectively used for abutting against two opposite side faces of the top cover.

According to some embodiments of the utility model, the fixture assembly further comprises a fifth fixing block, the fifth fixing block can be close to or far away from the working surface, the fifth fixing block is used for abutting against the side surface of the aluminum shell far away from the working surface, and the fifth fixing block is also used for abutting against the side surface of the top cover far away from the working surface.

According to some embodiments of the utility model, the fifth fixing block is further provided with a second avoiding hole, and the second avoiding hole is used for exposing a contact part of the aluminum shell and the top cover.

According to some embodiments of the present invention, the second fixing block is provided with a first abutting surface and a second abutting surface, and the fourth fixing block is provided with a third abutting surface and a fourth abutting surface; the first abutting surface and the third abutting surface are arranged oppositely, the first abutting surface and the third abutting surface are respectively used for abutting against two opposite side surfaces of the aluminum shell, and the first abutting surface and the third abutting surface are also respectively used for abutting against two opposite side surfaces of the top cover; the second abutting surface is used for abutting against the side face, far away from the working face, of the aluminum shell and the side face, far away from the working face, of the top cover, and the fourth abutting surface is used for abutting against the side face, far away from the working face, of the aluminum shell and the side face, far away from the working face, of the top cover.

According to some embodiments of the utility model, the first positioning block is provided with a groove, the second positioning block is provided with a protrusion, and the second positioning block can be close to the first positioning block so that the protrusion is inserted into the groove; or the first positioning block is provided with a protrusion, the second positioning block is provided with a groove, and the second positioning block can be close to the first positioning block so that the protrusion is inserted in the groove.

According to some embodiments of the present invention, the inner surface of the groove includes a first inclined surface and a second inclined surface, an included angle between the first inclined surface and the second inclined surface is an acute angle, the outer surface of the protrusion includes a third inclined surface and a fourth inclined surface, the third inclined surface of the protrusion inserted into the groove is attached to the first inclined surface, and the fourth inclined surface of the protrusion inserted into the groove is attached to the second inclined surface.

According to some embodiments of the utility model, the first positioning assembly further comprises a first elastic element for inserting the protrusion into the groove.

According to some embodiments of the utility model, the first positioning assembly further comprises a pull rod, one end of the pull rod is rotatably connected with the second positioning block, the pull rod is provided with a limiting block, the support is provided with a limiting groove, and the limiting block can be inserted into or separated from the limiting groove when the pull rod rotates; when the limiting block is inserted into the limiting groove, the protrusion is separated from the groove.

According to some embodiments of the utility model, the fixture further comprises a second positioning assembly, the fixture assembly comprises a rotating shaft, the rotating shaft is rotatably connected with the support, and one end of the rotating shaft is fixedly connected with the mounting plate; the second positioning assembly comprises a rotary table, an inserting block and a second elastic element, the other end of the rotary shaft is fixedly connected with the rotary table, two arc-shaped grooves are formed in the peripheral surface of the rotary table and are respectively located on two opposite sides of the rotating axis of the rotary table, the inserting block is connected with the support in a sliding mode, and one end of the inserting block is close to the peripheral surface of the rotary table through the second elastic element; when the one end of the insert block is inserted into one of the arc-shaped grooves, the working surface faces upward, and when the one end of the insert block is inserted into the other arc-shaped groove, the working surface faces downward.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a perspective view of a pre-spot welding fixture according to an embodiment of the present invention;

FIG. 2 is a perspective view of a portion of the clamp assembly of the tack welding fixture of FIG. 1;

FIG. 3 is an exploded view of a first locating component of the pre-spot welding locating device of FIG. 1;

FIG. 4 is a perspective view of a fifth fixed block of the pre-spot welding positioning device of FIG. 1;

FIG. 5 is a perspective view of the aluminum shell and top cover;

FIG. 6 is an enlarged view of a portion of the area I in FIG. 5;

FIG. 7 is an exploded view of a fourth mounting assembly of the pre-spot welding fixture of FIG. 1;

FIG. 8 is a left side view of a second fixed block of the pre-spot welding fixture of FIG. 1;

FIG. 9 is a left side view of a fourth fixed block of the pre-spot welding fixture of FIG. 1;

FIG. 10 is a left side view of a first locating block of the pre-spot welding locating device of FIG. 1;

FIG. 11 is a left side view of a second locating block of the pre-spot welding fixture of FIG. 1;

fig. 12 is an exploded view of a second locating component of the pre-spot welding locating device of fig. 1.

Reference numerals: the support 100, the bottom plate 110, the vertical plate 120, the stepped hole 121, the vertical seat 130, the limiting groove 131 and the first through hole 132;

a clamp assembly 200;

a fifth fixing component 210, a fifth fixing block 211, and a second avoidance hole 212;

a second fixing component 220, a second fixing block 221, a first abutting surface 222 and a second abutting surface 223;

a preliminary positioning block 230;

a sixth fixing member 240;

a first fixing member 250, a first fixing block 251;

a rotating shaft 260;

a fourth fixing component 270, a fourth fixing block 271, a second compression spring 272, a sliding rod 273, a pressure plate 274, a connecting rod 275, a fixing frame 276, a second sliding component 277, a third through hole 278 and a limit ring 279;

a third fixing block 280;

the second positioning assembly 300, the sliding seat 310, the sliding plate 311, the sliding slot 312, the base 313, the second elastic element 320, the insertion block 330, the rotating disc 340, and the arc-shaped slot 341;

the first positioning assembly 400, the first sliding assembly 410, the second positioning block 420, the third inclined surface 421, the protrusion 422, the fourth inclined surface 423, the mounting block 430, the first elastic element 440, the pull rod 450, the round rod 451, the limiting block 452, the first positioning block 460, the first inclined surface 461, the groove 462, and the second inclined surface 463;

a bearing 510, a third abutting surface 521, and a fourth abutting surface 522;

an aluminum case 610, a top cover 620;

mounting plate 700, working face 710, first avoidance hole 720.

Detailed Description

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

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description 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 invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present 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 invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means 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 invention. 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.

Referring to fig. 1 to 6, the tack welding positioning apparatus according to the embodiment of the present invention includes a holder 100, a jig assembly 200, a first positioning assembly 400, and a mounting plate 700. The mounting plate 700 is rotatably connected with the support 100, the mounting plate 700 is provided with a working surface 710, and the working surface 710 is used for placing an aluminum shell 610 provided with an opening (a battery cell is placed in the aluminum shell 610) and a top cover 620 covering the opening. The mounting plate 700 is further provided with a first escape hole 720 penetrating the working surface 710, and the first escape hole 720 is used for exposing the contact portions of the aluminum case 610 and the top cover 620. The clamp assembly 200 is attached to the mounting plate 700, and the clamp assembly 200 is used to secure the aluminum housing 610 and the top cover 620 to the work surface 710 to determine the relative positions of the aluminum housing 610 and the top cover 620.

The first positioning assembly 400 includes two first positioning blocks 460 and two second positioning blocks 420, the two first positioning blocks 460 are respectively located at two opposite sides (refer to fig. 2, for example, a front side and a rear side) of the mounting plate 700, and the two first positioning blocks 460 are disposed opposite to each other (the opposite disposition means that the two first positioning blocks 460 are centrosymmetric with respect to the rotation axis of the mounting plate 700 and the support 100). The two first positioning blocks 460 are both connected to the mounting plate 700, and the second positioning block 420 is connected to the support 100, or the two first positioning blocks 460 are both connected to the support 100, and the second positioning block 420 is connected to the mounting plate 700. The second positioning block 420 can be inserted into any one of the first positioning blocks 460 to fix the mounting plate 700 and the support 100 relatively.

In combination with the above, after the top cap 620 covers the opening of the aluminum shell 610, the aluminum shell 610 and the top cap 620 are placed together on the working surface 710 of the mounting plate 700, and under the action of the clamp assembly 200, the aluminum shell 610 and the top cap 620 are fixed on the working surface 710, and the relative positions of the aluminum shell 610 and the top cap 620 are determined to prepare for tack welding. Then, the mounting plate 700 is rotated to the position where the second positioning block 420 is in plug-in fit with the other first positioning block 460, at this time, the mounting plate 700 is turned over 180 degrees relative to the support, the positions of the turned aluminum shell 610 and the turned top cover 620 can be accurately positioned, and the aluminum shell 610 and the turned top cover 620 are accurately positioned. Then, spot welding of the contact portion of the other side of the aluminum case 610 and the top cap 620 is performed through the first escape hole 720 of the mounting plate 700. Whole spot welding process in advance, aluminium hull 610 and top cap 620 can both pinpoint around the upset of mounting panel 700 to can improve the position accuracy of spot welding in advance, in addition, use this kind of spot welding positioner in advance, aluminium hull 610 and top cap 620 only need carry out a clamping, and convenient operation can greatly improve spot welding efficiency in advance.

Then, the second positioning block 420 is inserted into and engaged with one of the first positioning blocks 460, so that the mounting plate 700 and the support 100 are relatively fixed (i.e., the mounting plate 700 is fixed), and at this time, the pre-spot welding of the contact portion of one side (e.g., the upper side) of the aluminum shell 610 and the top cover 620 can be completed. Then, the mounting plate 700 is rotated to mate the second positioning block 420 with the other first positioning block 460, and the pre-spot welding of the contact portion of the aluminum shell 610 and the other side (e.g., the lower side) of the top cover 620 is completed through the first avoiding hole 720 on the mounting plate 700. In the whole pre-spot welding process, the aluminum shell 610 and the top cover 620 only need to be clamped once, and the pre-spot welding positioning device is convenient to use and high in pre-spot welding efficiency.

Specifically, when the second positioning block 420 is inserted into and engaged with one first positioning block 460, the working surface 710 is parallel to the horizontal plane, and when the second positioning block 420 is inserted into and engaged with the other first positioning block 460, the working surface 710 has rotated 180 °, and the working surface 710 is still parallel to the horizontal plane. After the working face 710 rotates, the positioning is still performed through the second positioning block 420, the repeated positioning precision of the aluminum shell 610 and the top cover 620 is high, the spot welding positions of the contact parts on the two sides of the aluminum shell 610 and the top cover 620 are consistent, and the spot welding consistency is high.

Specifically, the first positioning block 460 may be fixed to the mounting plate 700 by screws, or may be fixed to the mounting plate 700 by welding.

Specifically, the two first positioning blocks 460 are fixed to the mounting plate 700, the second positioning block 420 is slidably connected to the support 100 (the drawings in the specification show this embodiment), and the second positioning block 420 slides relative to the support 100 to be close to or far away from one first positioning block 460 (after the mounting plate 700 is turned over, the second positioning block 420 can be close to or far away from another first positioning block 460), so as to complete the insertion and connection. In addition, the two first positioning blocks 460 are respectively connected with the mounting plate 700 in a sliding manner, and the second positioning block 420 is fixedly connected with the support 100, so that the first positioning block 460 is close to or away from the second positioning block 420 by sliding one first positioning block 460, and then the inserting and matching are completed (after the mounting plate 700 is turned over, the other first positioning block 460 is inserted and matched with the second positioning block 420).

Referring to fig. 1, 2 and 5, it should be noted that the top caps 620 are welded and fixed at the left end and the right end of the aluminum shell 610 in fig. 5, that is, the aluminum shell 610 in fig. 5 needs to be clamped twice to complete the tack welding of the two top caps 620, and the tack welding of the aluminum shell 610 and the top cap 620 on the right side is taken as an example hereinafter. In some embodiments of the present invention, the jig assembly 200 includes a first fixing block 251, a second fixing block 221, a third fixing block 280, and a fourth fixing block 271. The first fixing block 251, the second fixing block 221, the third fixing block 280 and the fourth fixing block 271 are connected with the mounting plate 700. The first fixing block 251 and the third fixing block 280 can be close to or far from each other, the first fixing block 251 is used for abutting against the side surface (refer to fig. 5, namely the left side surface of the aluminum shell 610) of the aluminum shell 610 far from the top cover 620, and the third fixing block 280 is used for abutting against the side surface (refer to fig. 5, namely the right side surface of the top cover 620) of the top cover 620 far from the aluminum shell 610. The second fixing block 221 and the fourth fixing block 271 can be close to or far from each other, the second fixing block 221 and the fourth fixing block 271 are respectively used for abutting against two opposite side surfaces of the aluminum case 610 (refer to fig. 5, i.e., a front side surface and a rear side surface of the aluminum case 610), and the second fixing block 221 and the fourth fixing block 271 are also respectively used for abutting against two opposite side surfaces of the top cover 620 (refer to fig. 5, i.e., a front side surface and a rear side surface of the top cover 620).

Therefore, after the first fixing block 251 and the third fixing block 280 are close to each other and the second fixing block 221 and the fourth fixing block 271 are close to each other, the aluminum shell 610 and the top cover 620 are clamped and fixed, and the relative positions are determined, and at this time, pre-spot welding can be performed.

Specifically, the first fixing block 251 and the third fixing block 280 are close to or far from each other and can be respectively driven by an air cylinder or a linear motor; in addition, the first fixing block 251 may be manually and spring-driven (in this case, the structure of the first fixing assembly 250 may refer to the structure of the fourth fixing assembly 270, which will be described later), and the third fixing block 280 may be fixed to the working surface 710. The second fixed block 221 and the fourth fixed block 271 are close to or far away from each other and can be respectively driven by an air cylinder or a linear motor; in addition, the second fixing block 221 may be manually and spring-driven (in this case, the structure of the second fixing member 220 may refer to the structure of the fourth fixing member 270 described below), and the fourth fixing block 271 may be manually and spring-driven (described below).

Specifically, referring to fig. 7, the fourth fixing member 270 includes a fourth fixing block 271, a second compression spring 272, a sliding bar 273, a pressing plate 274, a connecting rod 275, a fixing bracket 276, and a second sliding member 277. The fixing bracket 276 is fixed on the support 100 by screws, the fixing bracket 276 is provided with a third through hole 278, and the sliding rod 273 is inserted into the third through hole 278 and can slide back and forth along the third through hole 278. The front end of the sliding rod 273 is rotatably connected with the rear end of the connecting rod 275, the front end of the connecting rod 275 is rotatably connected with the pressure plate 274, the pressure plate 274 is also rotatably connected with the fixed frame 276, the sliding rod 273, the pressure plate 274, the connecting rod 275 and the fixed frame 276 form a crank-slider mechanism, and the sliding rod 273 can move in the front-back direction by rotating the pressure plate 274.

The outer peripheral surface of the sliding rod 273 is provided with a limit ring 279, and the rear end of the sliding rod 273 passes through the second compression spring 272 and is fixedly connected with the fourth fixed block 271. The second sliding assembly 277 includes a second sliding block and a second sliding rail, the second sliding rail is fixed to the support 100 through a fastener, the second sliding block is slidably connected to the second sliding rail, and the fourth fixing block 271 is fixed to the second sliding block through a screw. Therefore, after the pressure plate 274 rotates forwards, the fourth fixed block 271 also moves forwards, the second compression spring 272 is compressed, when the pressure plate 274 rotates forwards to a certain angle, the fourth fixed block 271 can be locked, and the second compression spring 272 cannot push the fourth fixed block 271 to move backwards. The pressing plate 274 rotates backward to release the locking state, the second compression spring 272 is deformed again, and the fourth fixing block 271 moves backward by the second compression spring 272, thereby abutting against the aluminum case 610 and the top cover 620.

Referring to fig. 1, in some embodiments of the present invention, to further fix the aluminum shell 610, the clamp assembly 200 further includes two sixth fixing assemblies 240, and the two sixth fixing assemblies 240 are respectively used for abutting against the front side and the rear side of the aluminum shell 610. The specific structure of the sixth fixing member 240 may refer to the structure of the fourth fixing member 270 described above.

Referring to fig. 1, in some embodiments of the present invention, the fixture assembly 200 further includes at least two primary positioning blocks 230, the primary positioning blocks 230 are fixed to the working surface 710, the aluminum shell 610 is placed between the two primary positioning blocks 230, and the primary positioning blocks 230 can achieve primary positioning of the aluminum shell 610, thereby reducing positioning time of the aluminum shell 610.

Referring to fig. 1, 2 and 4, in some embodiments of the present invention, the clamp assembly 200 further includes a fifth fixing block 211, the fifth fixing block 211 can be close to or far from the working surface 710, the fifth fixing block 211 is configured to support a side of the aluminum shell 610 far from the working surface 710, and the fifth fixing block 211 is further configured to support a side of the top cover 620 far from the working surface 710.

The fifth fixing block 211 is matched with the working face 710, the aluminum shell 610 and the top cover 620 can be clamped in the up-down direction, when the mounting plate 700 is turned over and the aluminum shell 610 and the top cover 620 are subjected to prespot welding, the aluminum shell 610 and the top cover 620 are not easy to loosen, the welding effect is good, and the consistency of welding positions is good.

Specifically, the fifth fixing block 211 can be close to or far from the working surface 710, and may be implemented by an air cylinder or a linear motor, or the fifth fixing block 211 may be manually far from the working surface 710, and the fifth fixing block 211 may be close to the working surface 710 by a spring (the structure of the fifth fixing assembly 210 may refer to the structure of the fourth fixing assembly 270 above).

Referring to fig. 1 and 4, in a further embodiment of the present invention, the fifth fixing block 211 is further provided with a second escape hole 212, and the second escape hole 212 is used to expose a contact portion of the aluminum case 610 and the top cover 620.

Through setting up second dodge hole 212, can conveniently carry out spot welding to the contact site of aluminum shell 610 and top cap 620 when fifth fixed block 211 compresses tightly aluminum shell 610 and top cap 620 by a large scale.

Specifically, the second avoidance holes 212 may be provided in plurality and spaced apart from each other, so as to perform spot welding on the contact portions of the aluminum case 610 and the top cap 620 a plurality of times.

Referring to fig. 8 and 9, in some embodiments of the present invention, the second fixing block 221 is provided with a first abutting surface 222 and a second abutting surface 223, and the fourth fixing block 271 is provided with a third abutting surface 521 and a fourth abutting surface 522; the first abutting surface 222 and the third abutting surface 521 are disposed opposite to each other, the first abutting surface 222 and the third abutting surface 521 are respectively used for abutting two opposite side surfaces of the aluminum shell 610, and the first abutting surface 222 and the third abutting surface 521 are also respectively used for abutting two opposite side surfaces of the top cover 620. The second abutting surface 223 abuts against a side surface of the aluminum shell 610 far away from the working surface 710 and a side surface of the top cover 620 far away from the working surface 710, and the fourth abutting surface 522 abuts against a side surface of the aluminum shell 610 far away from the working surface 710 and a side surface of the top cover 620 far away from the working surface 710.

The first abutting surface 222 and the third abutting surface 521 are respectively used for abutting two opposite side surfaces of the aluminum shell 610, the first abutting surface 222 and the third abutting surface 521 are also respectively used for abutting two opposite side surfaces of the top cover 620, so that the first abutting surface 222 can align the rear side surface of the aluminum shell 610 with the rear side surface of the top cover 620, and the third abutting surface 521 can align the front side surface of the aluminum shell 610 with the front side surface of the top cover 620. The second abutting surface 223 is used for abutting against the side face, away from the working face 710, of the aluminum shell 610 and the side face, away from the working face 710, of the top cover 620, the fourth abutting surface 522 is used for abutting against the side face, away from the working face 710, of the aluminum shell 610 and the side face, away from the working face 710, of the top cover 620, namely the second abutting surface 223 and the fourth abutting surface 522 jointly abut against the upper surface of the aluminum shell 610 and the upper surface of the top cover 620, when the mounting plate 700 is turned over and spot welding is conducted, the aluminum shell 610 and the top cover 620 are not prone to loosening, and the spot welding position is good in consistency.

Referring to fig. 10 and 11, in some embodiments of the present invention, the first positioning block 460 is provided with a groove 462, the second positioning block 420 is provided with a protrusion 422, and the second positioning block 420 can be adjacent to the first positioning block 460 such that the protrusion 422 is inserted into the groove 462. Or, the first positioning block 460 is provided with a protrusion, the second positioning block 420 is provided with a groove, and the second positioning block 420 can be close to the first positioning block 460, so that the protrusion is inserted into the groove.

Thus, the positioning of the mounting plate 700 can be quickly achieved through the plug-in fit of the protrusion 422 and the groove 462.

Specifically, the second positioning block 420 is close to the first positioning block 460, and may be implemented by an air cylinder or a linear motor. In addition, the second positioning block 420 is adjacent to the first positioning block 460, which may also be implemented by a compressed spring (specifically, refer to the description of the first positioning assembly 400 below).

Referring to fig. 10 and 11, in a further embodiment of the present invention, the inner surface of the groove 462 includes a first slope surface 461 and a second slope surface 463, the first slope surface 461 and the second slope surface 463 form an acute angle, the outer surface of the protrusion 422 includes a third slope surface 421 and a fourth slope surface 423, the third slope surface 421 of the protrusion 422 inserted in the groove 462 is attached to the first slope surface 461, and the fourth slope surface 423 of the protrusion 422 inserted in the groove 462 is attached to the second slope surface 463.

After the third inclined plane 421 is attached to the first inclined plane 461 and the fourth inclined plane 423 is attached to the second inclined plane 463, the second positioning block 420 can accurately position the first positioning block 460, that is, the aluminum shell 610 and the top cap 620 before and after the turning can be accurately positioned, thereby being beneficial to improving the position accuracy of spot welding.

Specifically, the included angle between the first and second sloped surfaces 461, 463 may be 30 °, 45 °, 60 °, or other values.

Referring to fig. 3, in some embodiments of the present invention, the first positioning assembly 400 further includes a first elastic member 440, and the first elastic member 440 is used to insert the protrusion 422 into the groove 462.

The protrusion 422 can be inserted into the groove 462 by the elastic force of the first elastic member 440, and the protrusion 422 is maintained in a state of being inserted into the groove 462.

Referring to fig. 3, in a further embodiment of the present invention, the first positioning assembly 400 further includes a pull rod 450, one end (e.g., a rear end) of the pull rod 450 is rotatably connected to the second positioning block 420, the pull rod 450 is provided with a stopper 452, the support 100 is provided with a stopper groove 131, and the stopper 452 can be inserted into or separated from the stopper groove 131 when the pull rod 450 is rotated. When the stopper 452 is inserted into the stopper groove 131, the protrusion 422 is disengaged from the groove 462.

Therefore, the stop block 452 is inserted into the stop groove 131 by rotating the pull rod 450, so that the protrusion 422 is kept away from the groove 462, and the mounting plate 700 is not interfered when rotated, and the pre-spot welding positioning device is more convenient to use.

Specifically, referring to fig. 3, the first positioning assembly 400 further includes a first sliding assembly 410 and a mounting block 430, and the second positioning block 420 is fixed to the mounting block 430 by screws. The first sliding assembly 410 includes a first sliding block and a first sliding rail, the first sliding block is slidably connected to the first sliding rail, the first sliding block is fixed to the mounting block 430, and the first sliding rail is fixed to the support 100, so that the second positioning block 420 can slide relative to the support 100.

The support 100 comprises a base plate 110 and a vertical seat 130, the vertical seat 130 is fixed on the base plate 110 through screws, the vertical seat 130 is provided with a first through hole 132 and a limiting groove 131, and the first through hole 132 is communicated with the limiting groove 131. The pull rod 450 further includes a round rod 451, the rear end of the round rod 451 is rotatably connected with the mounting block 430 (a second through hole can be formed in the mounting block 430, a screw is inserted into the second through hole, the screw is in threaded connection with the rear end of the round rod 451, the head of the screw abuts against the mounting block 430, so that the round rod 451 is rotatably connected with the mounting block 430), the round rod 451 is inserted into the first through hole 132, and the limiting block 452 is fixed on the outer peripheral surface of the round rod 451.

The first elastic element 440 includes a first compression spring, the first compression spring is sleeved on the round bar 451, and two ends of the first compression spring respectively abut against the mounting block 430 and the vertical seat 130. When the stopper 452 is disposed in the stopper groove 131, the first compression spring is compressed, and the stopper 452 and the inner surface of the stopper groove 131 maintain a contact state. By rotating the pull rod 450, the stopper 452 is disengaged from the stopper groove 131, and at this time, the second positioning block 420 slides backward under the action of the first compression spring, thereby approaching the first positioning block 460.

Furthermore, the first elastic element 440 may also comprise an elastic sleeve or a bellows.

Referring to fig. 12, in some embodiments of the present invention, the tack welding positioning device further comprises a second positioning assembly 300. The clamp assembly 200 includes a rotating shaft 260, the rotating shaft 260 is rotatably connected to the support 100, and one end of the rotating shaft 260 is fixedly connected to the mounting plate 700. The second positioning assembly 300 includes a second elastic element 320, an insert block 330 and a rotating disc 340, the other end of the rotating shaft 260 is fixedly connected with the rotating disc 340, the outer peripheral surface of the rotating disc 340 is provided with two arc-shaped grooves 341, the two arc-shaped grooves 341 are respectively located at two opposite sides (for example, upper side and lower side) of the rotating axis of the rotating disc 340, the insert block 330 is slidably connected with the support 100, and the second elastic element 320 is used for enabling one end of the insert block 330 to be close to the outer peripheral surface of the rotating disc 340. The working surface 710 faces upward when one end of the insert 330 is inserted into one of the arc-shaped grooves 341, and the working surface 710 faces downward when one end of the insert 330 is inserted into the other arc-shaped groove 341.

Therefore, the rotary plate 340 is fixedly connected with the mounting plate 700 through the rotating shaft 260, so that synchronous rotation is realized. The outer peripheral surface of the rotating disc 340 is provided with two opposite arc-shaped grooves 341, when one end of the inserting block 330 is inserted into one arc-shaped groove 341, the working surface 710 faces upwards, when one end of the inserting block 330 is inserted into the other arc-shaped groove 341, the working surface 710 faces downwards, therefore, when the mounting plate 700 rotates to the position (when the working surface 710 faces upwards or downwards), one end of the inserting block 330 can be inserted into one arc-shaped groove 341, so that the mounting plate 700 can be initially positioned, the time for positioning the mounting plate 700 is reduced, and the positioning efficiency is improved.

The inner surface of the arc-shaped groove 341 is smooth, when the rotating disc 340 rotates, one end of the inserting block 330 can automatically slide out of the arc-shaped groove 341, and the inserting block 330 cannot be clamped by the arc-shaped groove 341.

Specifically, when one end of the insertion block 330 is inserted into one arc-shaped groove 341, the working surface 710 faces upward and is parallel to the horizontal plane; when one end of the insert block 330 is inserted into the other arc-shaped groove 341, the working surface 710 faces downward and is parallel to the horizontal plane.

Specifically, the second positioning assembly 300 further includes a sliding seat 310, the sliding seat 310 includes a sliding plate 311 and a base 313, the sliding plate 311 is provided with a sliding slot 312, the insertion block 330 is inserted into the sliding slot 312, the second elastic element 320 includes a third compression spring, the third compression spring is located in the sliding slot 312, a lower end of the third compression spring abuts against a lower end of the base 313, and an upper end of the third compression spring abuts against the insertion block 330. After the insert block 330 and the third compression spring are installed into the slide groove 312, the sliding plate 311 and the base 313 are fixed (by screws).

Specifically, the base 100 includes two vertical plates 120, and the two vertical plates 120 are respectively fixed to the left end and the right end of the bottom plate 110 (see fig. 1). The vertical plate 120 is provided with a step hole 121, the clamp assembly 200 further includes a bearing 510, the bearing 510 is disposed in the step hole 121, and the rotating shaft 260 is fixedly connected (by tightening a screw) to the rotating disc 340 after passing through the bearing 510.

Referring to fig. 2, in some embodiments of the present invention, the third fixing block 280 is fixed to the working surface 710. Thus, the third fixing block 280 may serve as a reference for positioning such that the aluminum case 610 and the top cover 620 are placed at fixed positions on the working surface 710.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Spot welding positioner in advance, its characterized in that includes:

a support;

the mounting plate is rotatably connected with the support and provided with a working surface, the working surface is used for placing an aluminum shell with an opening and covering the aluminum shell with the opening, the mounting plate is also provided with a first avoiding hole penetrating through the working surface, and the first avoiding hole is used for exposing the contact part of the aluminum shell and the top cover;

the clamp assembly is connected to the mounting plate and used for fixing the aluminum shell and the top cover on the working surface so as to determine the relative positions of the aluminum shell and the top cover;

the first positioning assembly comprises two first positioning blocks and two second positioning blocks, the two first positioning blocks are respectively positioned on two opposite sides of the mounting plate, and the two first positioning blocks are arranged opposite to each other; the two first positioning blocks are connected to the mounting plate, and the second positioning block is connected to the support, or the two first positioning blocks are connected to the support, and the second positioning block is connected to the mounting plate; the second positioning block can be in plug-in fit with any one of the first positioning blocks, so that the mounting plate and the support are relatively fixed.

2. The pre-spot welding positioning device according to claim 1, wherein the fixture assembly comprises a first fixing block, a second fixing block, a third fixing block and a fourth fixing block, and the first fixing block, the second fixing block, the third fixing block and the fourth fixing block are connected with the mounting plate; the first fixing block and the third fixing block can be close to or far away from each other, the first fixing block is used for abutting against the side face, far away from the top cover, of the aluminum shell, and the third fixing block is used for abutting against the side face, far away from the aluminum shell, of the top cover; the second fixing block and the fourth fixing block can be close to or far away from each other, the second fixing block and the fourth fixing block are respectively used for abutting against two opposite side faces of the aluminum shell, and the second fixing block and the fourth fixing block are also respectively used for abutting against two opposite side faces of the top cover.

3. The tack welding positioning device of claim 2, wherein the fixture assembly further comprises a fifth fixing block, the fifth fixing block can be close to or far away from the working surface, the fifth fixing block is used for abutting against the side face, far away from the working surface, of the aluminum shell, and the fifth fixing block is also used for abutting against the side face, far away from the working surface, of the top cover.

4. The pre-spot welding positioning device according to claim 3, wherein a second avoiding hole is further formed in the fifth fixing block, and the second avoiding hole is used for exposing a contact portion of the aluminum shell and the top cover.

5. The pre-spot welding positioning device according to claim 2, wherein the second fixing block is provided with a first abutting surface and a second abutting surface, and the fourth fixing block is provided with a third abutting surface and a fourth abutting surface; the first abutting surface and the third abutting surface are arranged oppositely, the first abutting surface and the third abutting surface are respectively used for abutting against two opposite side surfaces of the aluminum shell, and the first abutting surface and the third abutting surface are also respectively used for abutting against two opposite side surfaces of the top cover; the second abutting surface is used for abutting against the side face, far away from the working face, of the aluminum shell and the side face, far away from the working face, of the top cover, and the fourth abutting surface is used for abutting against the side face, far away from the working face, of the aluminum shell and the side face, far away from the working face, of the top cover.

6. The tack welding positioning device according to any one of claims 1 to 5, wherein the first positioning block is provided with a groove, and the second positioning block is provided with a protrusion, the second positioning block being capable of being brought close to the first positioning block so that the protrusion is inserted in the groove; or the first positioning block is provided with a protrusion, the second positioning block is provided with a groove, and the second positioning block can be close to the first positioning block so that the protrusion is inserted in the groove.

7. The tack welding positioning device of claim 6, wherein the inner surface of the groove comprises a first inclined surface and a second inclined surface, an included angle between the first inclined surface and the second inclined surface is an acute angle, the outer surface of the protrusion comprises a third inclined surface and a fourth inclined surface, the third inclined surface of the protrusion inserted into the groove is attached to the first inclined surface, and the fourth inclined surface of the protrusion inserted into the groove is attached to the second inclined surface.

8. The tack welding positioning device of claim 6, wherein the first positioning assembly further comprises a first resilient element for inserting the projection into the recess.

9. The tack welding positioning device according to claim 8, wherein the first positioning assembly further comprises a pull rod, one end of the pull rod is rotatably connected with the second positioning block, the pull rod is provided with a limiting block, the support is provided with a limiting groove, and the limiting block can be inserted into or separated from the limiting groove when the pull rod is rotated; when the limiting block is inserted into the limiting groove, the protrusion is separated from the groove.

10. The tack welding positioning device according to any one of claims 1 to 5, further comprising a second positioning assembly, wherein the clamp assembly comprises a rotating shaft, the rotating shaft is rotatably connected with the support, and one end of the rotating shaft is fixedly connected with the mounting plate; the second positioning assembly comprises a rotary table, an inserting block and a second elastic element, the other end of the rotary shaft is fixedly connected with the rotary table, two arc-shaped grooves are formed in the peripheral surface of the rotary table and are respectively located on two opposite sides of the rotating axis of the rotary table, the inserting block is connected with the support in a sliding mode, and one end of the inserting block is close to the peripheral surface of the rotary table through the second elastic element; when the one end of the insert block is inserted into one of the arc-shaped grooves, the working surface faces upward, and when the one end of the insert block is inserted into the other arc-shaped groove, the working surface faces downward.

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