Automatic assembly device for battery pack cover

Abstract

The present invention discloses an automatic assembly device for the upper cover of a battery pack, comprising a clamping and conveying mechanism, a shaping mechanism, a pressing mechanism, and a side locking mechanism which are arranged above the upper cover conveying mechanism and the base conveying mechanism. The shaping mechanism is arranged at the side of the battery pack, and is used to adjust the parallelism of a thin sheet that has been assembled on the base to keep it vertical and ensure that it matches the corresponding position of the upper cover; the clamping and conveying mechanism is arranged across the upper cover conveying mechanism and the base conveying mechanism, and is used to clamp and convey the upper cover to the top of the base, and then drive the upper cover to move downward, so that the upper cover passes through the thin sheet and is placed on the battery pack; the pressing mechanism is arranged above the base, and is used to assemble the upper cover to the base with the help of downward pressure; the side locking mechanism is arranged behind the pressing mechanism, and is used to perform locking operations on different positions of the battery pack while applying downward pressure to the side of the battery pack on which the upper cover is assembled.

Description

Technical Field

[0001] The invention belongs to the technical field of battery assembly, and in particular relates to an automatic assembly device for a battery pack upper cover. Background Art

[0002] As the degree of electrification continues to increase, many industries have put forward higher requirements for the output and quality of various batteries. The battery assembly process is often complicated and dangerous, and manual assembly is not only inefficient, but also easily affected by the workers' assembly proficiency, resulting in a high scrap rate. In addition, the existing automatic assembly devices for battery packs generally have complicated control systems, and most of them only perform simple battery pack assembly. There is no corresponding actuator for the fine assembly that requires the top cover and the battery pack sheet to match accurately.

[0003] Faced with the continuous expansion of market demand, traditional assembly methods can no longer meet manufacturers' requirements for battery output and quality. Therefore, it is of great practical significance to develop an automatic assembly device for battery pack covers that can greatly improve production efficiency. Summary of the invention

[0004] The present invention provides an automatic assembly device for a battery pack upper cover, which solves the problems that the existing manual assembly efficiency is low and the general automatic assembly method can only perform simple assembly but cannot perform fine assembly.

[0005] The present invention can be achieved through the following technical solutions:

[0006] An automatic assembly device for a battery pack upper cover comprises a clamping and conveying mechanism, a shaping mechanism, a pressing mechanism, and a side locking mechanism arranged above an upper cover conveying mechanism and a base conveying mechanism. The upper cover conveying mechanism and the base conveying mechanism are arranged in parallel and are used to convey the upper cover of the battery pack and the base of the battery pack, respectively.

[0007] The shaping mechanism is arranged on the side of the base, and is used to adjust the parallelism of the sheet assembled on the base, so that it remains vertical and ensures that it matches the corresponding position of the upper cover;

[0008] The clamping and conveying mechanism is arranged across the upper cover conveying mechanism and the base conveying mechanism, and is used to clamp and convey the upper cover to the top of the base, and then drive the upper cover to move downward, so that the upper cover passes through the sheet and is placed on the base;

[0009] The downward pressing mechanism is arranged above the base and is used to assemble the upper cover onto the base by means of downward pressure;

[0010] The side locking mechanism is arranged behind the pressing mechanism, and is used to perform locking operations on different positions of the upper cover and the base while applying downward pressure to the side of the battery pack assembled with the upper cover.

[0011] Furthermore, the side locking mechanism includes a side pressure mechanism, an adjustment mechanism and a locking mechanism. The side pressure mechanism is arranged above the battery pack assembled with the upper cover, and is used to apply downward pressure to the side of the battery pack assembled with the upper cover; the adjustment mechanism is arranged at the bottom of the battery pack assembled with the upper cover, and is used to drive the battery pack assembled with the upper cover to perform lifting and rotating movements, so that the locking mechanism can perform locking operations and support or release the support between the battery pack assembled with the upper cover; the locking mechanism is arranged on the side of the battery pack assembled with the upper cover, and is used to drive the locking driver to move and perform locking operations on different positions of the upper cover and the base.

[0012] Further, the locking mechanism includes an X-axis guide rail parallel to the conveying direction of the base conveying mechanism, an X-axis slider is arranged on the X-axis guide rail, the X-axis slider is connected to the bottom surface of the first Y-axis guide rail, and its side is connected to the X-axis cylinder, a first Y-axis slider is arranged on the first Y-axis guide rail, the first Y-axis slider is connected to the bottom surface of the locking driver, and its side is connected to the Y-axis cylinder, the X-axis cylinder is used to drive the X-axis slider and the first Y-axis guide rail to reciprocate along the X-axis guide rail, and the Y-axis cylinder is used to drive the first Y-axis slider and the locking driver to reciprocate along the first Y-axis guide rail, thereby driving the locking driver to approach or move away from the battery pack assembled with the upper cover, and performing locking operations on different positions of the upper cover and the base;

[0013] The side pressure mechanism comprises a plurality of side pressure guide columns arranged at intervals around the battery pack assembled with the upper cover, a first pressure plate is mounted on all the side pressure guide columns, the tops of the first pressure plates are connected to the side pressure top plates, a side pressure cylinder is arranged on the side pressure top plates, a piston rod of the side pressure cylinder passes through the side pressure top plates and is connected to the top surface of the first pressure plate, two side pressure blocks are arranged at intervals on the bottom surface of the first pressure plate, notches matching the side edges of the battery pack assembled with the upper cover are arranged at the bottoms of the two side pressure blocks, the side pressure cylinder is used to drive the first pressure plate together with the two side pressure blocks to move towards or away from the battery pack assembled with the upper cover, so that the notches thereof clamp the corresponding side edges, so that the locking mechanism performs the locking operation, or releases the clamping of the notches with the corresponding side edges, so that the adjustment mechanism drives the battery assembled with the upper cover to perform a rotational movement;

[0014] The adjustment mechanism includes a first L-shaped support plate, the top surface of the first L-shaped support plate cooperates with the bottom surface of the battery pack assembled with the upper cover, and the bottom surface of the first L-shaped support plate is connected to the rotary cylinder, and the rotary cylinder is arranged on the lifting base plate, and the bottom surface of the lifting base plate is connected to the first lifting cylinder. The first lifting cylinder is used to drive the lifting base plate together with the rotary cylinder and the first L-shaped support plate to perform lifting motion along the Z-axis direction, and the rotary cylinder is used to drive the first L-shaped support plate to perform rotational motion around the Z-axis direction.

[0015] Further, the gripping and conveying mechanism includes a gantry frame arranged across the upper cover conveying mechanism and the base conveying mechanism, a second Y-axis guide rail and a rodless cylinder are arranged on the crossbeam of the gantry frame in parallel along the Y-axis direction, a second Y-axis slider is arranged on the second Y-axis guide rail, the pistons of the second Y-axis slider and the rodless cylinder are both connected to one end of the connecting member, the other end of the connecting member is connected to the Z-axis guide rail, a Z-axis slider is arranged on the Z-axis guide rail, one end of the Z-axis slider is connected to the Z-axis cylinder, and the other end is connected to the pneumatic clamp, the pneumatic clamp is used to clamp the upper cover, the rodless cylinder is used to drive the Z-axis guide rail together with the Z-axis slider and the pneumatic clamp to move along the second Y-axis guide rail, and the Z-axis cylinder is used to drive the pneumatic clamp together with the upper cover to move along the Z-axis guide rail, so that the corresponding position of the upper cover passes through the sheet and is placed on the base;

[0016] A pushing base plate is arranged below the cross beam of the gantry frame and on the upper cover conveying mechanism. A slope is arranged on the side of the pushing base plate facing the conveying direction, and a double-rod cylinder and a U-shaped positioning block are arranged opposite the interval thereon. The double-rod cylinder is used to push the upper cover entering the gap into the interior of the U-shaped positioning block.

[0017] Further, the shaping mechanism includes a side pushing mechanism arranged on the side of the base and a lifting mechanism arranged on the bottom surface of the base, the side pushing mechanism includes side blocks respectively matched with the two sides of the base, the two side blocks are arranged opposite to each other at the same height, and are provided with bayonet holes matched with the side surfaces of the base, a third Y-axis guide rail is arranged on one of the side blocks, a third Y-axis slider is arranged on the third Y-axis guide rail, one side of the third Y-axis slider is connected to the shaping plate, and the other side is connected to the third Y-axis cylinder, two guide slits are arranged on the shaping plate, and the positions and sizes of the two guide slits are matched with the positions and sizes of the two thin sheets assembled on the base, and the third Y-axis cylinder is used to drive the shaping plate to move along the Y-axis direction so that the thin sheet can pass through the guide slit, thereby completing the shaping of the thin sheet;

[0018] The lifting mechanism includes a second L-shaped support plate matched with the bottom surface of the base, the second L-shaped support plate is connected to a second lifting cylinder, and the second lifting cylinder is used to drive the second L-shaped support plate to perform lifting movement along the Z-axis direction;

[0019] The pressing mechanism includes a plurality of pressing guide columns arranged at intervals around the base, a second pressing plate is mounted on all the pressing guide columns, the tops of which are connected to the pressing top plate, a pressing cylinder is arranged on the pressing top plate, a piston rod of the pressing cylinder passes through the pressing top plate and is connected to the top surface of the second pressing plate, four pressing blocks are arranged at intervals on the bottom surface of the second pressing plate, the four pressing blocks correspond to the four corners of the upper cover respectively, and the pressing cylinder is used to drive the second pressing plate together with the two pressing blocks to move towards or away from the battery pack to assemble the upper cover to the base.

[0020] Furthermore, the bottoms of the downward pressing guide columns are respectively connected to the lateral stoppers, and the guide slits extend to the edges of the shaping plates, and V-shaped notches are provided at the edges thereof.

[0021] The beneficial technical effects of the present invention are as follows:

[0022] (1) With the help of the clamping and conveying mechanism, the upper cover to be assembled is positioned by the double-rod cylinder and the U-shaped positioning block fixed on the pusher base plate. The pneumatic clamp can move in the Y-axis direction and the Z-axis direction under the drive of the rodless cylinder in the Y-axis direction and the Z-axis cylinder in the Z-axis direction, and can effectively place the upper cover to the designated position, ensuring the subsequent assembly work and improving the assembly efficiency;

[0023] (2) With the help of the shaping mechanism, the upper end of the sheet is adjusted to a vertical state to ensure that the upper cover can pass through the sheet and be correctly placed on the battery base, thereby avoiding the displacement of the upper cover assembly position and improving the qualified rate;

[0024] (3) With the help of the adjustment mechanism, the battery pack can be effectively pressed and fixed, which provides a guarantee for the subsequent installation of the screws on the side of the battery pack. At the same time, the use of the rotary cylinder makes the installation of the screws on the side of the battery pack more convenient and efficient.

[0025] (4) With the help of the side locking mechanism, the side screws between the upper cover and the battery base can be quickly locked, which greatly improves the locking efficiency and is more practical for mass production, with great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The overall structure of the automatic assembly device of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The overall structure of the automatic assembly device of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 It is a structural schematic diagram of the shaping mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the clamping and conveying mechanism of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the pressing mechanism of the present invention;

[0031] Figure 6 The structure diagram of the side locking mechanism of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 7 The structure diagram of the side locking mechanism of the present invention is shown in FIG. Figure 2 ;

[0033] Among them, 1-upper cover conveying mechanism, 2-base conveying mechanism, 3-gripping and conveying mechanism, 301-gantry stand, 302-pushing base plate, 303-double-rod cylinder, 304-U-shaped positioning block, 305-second Y-axis guide rail, 306-rodless cylinder, 307-connecting piece, 308-Z-axis guide rail, 309-Z-axis cylinder, 310-pneumatic clamp, 4-shaping mechanism, 41-lateral block, 42-third Y-axis guide rail, 43-third Y-axis slider, 44-shaping plate, 441-guide slit, 442-V-shaped notch, 45-third Y-axis cylinder, 46-second L-shaped support plate, 47-second Lifting cylinder, 5-pressing mechanism, 51-pressing guide column, 52-second pressing plate, 53-pressing top plate, 54-pressing cylinder, 55-pressing block, 6-side locking mechanism, 601-side pressing guide column, 602-first pressing plate, 603-side pressing top plate, 604-side pressing cylinder, 605-side pressing block, 606-first L-shaped support plate, 607-rotating cylinder, 608-lifting base plate, 609-first lifting cylinder, 610-X-axis guide rail, 611-first Y-axis guide rail, 612-X-axis cylinder, 613-locking drive, 614-Y-axis cylinder, 7-upper cover, 8-base, 9-thin sheet. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0035] like Figure 1 and 2As shown, the present invention proposes an automatic assembly device for the upper cover of a battery pack, comprising a clamping and conveying mechanism 3, a shaping mechanism 4, a pressing mechanism 5, and a side locking mechanism 6 arranged above an upper cover conveying mechanism 1 and a base conveying mechanism 2. The upper cover conveying mechanism 1 and the base conveying mechanism 2 are arranged in parallel, and are respectively used to convey the upper cover 7 and the base 8 of the battery pack. The shaping mechanism 4 is arranged on the side of the base 8, and is used to adjust the parallelism of the thin sheet 9 assembled on the base 8 to keep it vertical and ensure that it matches the corresponding position of the upper cover 7; The clamping and conveying mechanism 3 is arranged across the upper cover conveying mechanism 1 and the base conveying mechanism 2, and is used to clamp and convey the upper cover 7 to the top of the base 8, and then drive the upper cover 7 to move downward, so that the corresponding position of the upper cover 7 passes through the thin sheet 9 and is placed on the base 8; the pressing mechanism 5 is arranged above the base 8, and is used to assemble the upper cover 7 to the base 8 with the help of downward pressure; the side locking mechanism 6 is arranged behind the pressing mechanism 5, and is used to apply downward pressure to the side of the battery pack to assemble the upper cover, and perform locking operations on different positions of the upper cover 7 and the base 8. In this way, with the help of the shaping mechanism, the thin sheet is kept vertical, ensuring that the corresponding position of the thin sheet and the upper cover matches, providing a basis for the precise assembly of the upper cover and the base, facilitating the accurate placement of the upper cover at the designated position, and improving the accuracy of assembly, and then the upper cover is transported and assembled with the help of the clamping and conveying mechanism and the pressing mechanism, and finally the upper cover and the base are locked by the side locking mechanism to complete the assembly of the entire battery pack upper cover, which can effectively improve the assembly efficiency and meet the manufacturer's requirements for battery production and quality.

[0036] The conveying directions of the upper cover conveying mechanism 1 and the base conveying mechanism 2 are defined as the X-axis direction, the direction perpendicular to the conveying direction is defined as the Y-axis direction, and the normal direction perpendicular to the plane where the X-axis and Y-axis are located is defined as the Z-axis direction. The above-mentioned mechanisms are described in detail below.

[0037] like Figure 3As shown, the shaping mechanism 4 includes a side push mechanism arranged on the side of the base 8 and a lifting mechanism arranged on the bottom surface of the base 8, which are mostly implemented by pneumatic mechanisms. Specifically, the side push mechanism includes side stoppers 41 respectively matched with the two sides of the base 8, and the two side stoppers 41 are arranged opposite to each other at the same height, and are provided with bayonet holes matched with the side surfaces of the base 8 to avoid shaping failure caused by the base tilting during subsequent side push shaping. A third Y-axis guide rail 42 is arranged on one of the side stoppers 41, and a third Y-axis slider 43 is arranged on the third Y-axis guide rail 42. One side of the third Y-axis slider 43 is connected to the shaping plate 44, and the other side of the third Y-axis slider 43 is connected to the shaping plate 44. One side is connected to the third Y-axis cylinder 45, and two guide slits 441 are arranged on the shaping plate 44. The positions and sizes of the two guide slits 441 match the positions and sizes of the two thin sheets 9 assembled on the base 8. They all extend to the edge of the shaping plate 44, and a V-shaped notch 442 is arranged at the edge. The V-shaped notch 442 is used to facilitate the thin sheet 9 to enter the guide slit 441, so as to perform shaping. The third Y-axis cylinder 45 drives the shaping plate 44 to move along the Y-axis direction, so that the thin sheet 9 can pass through the guide slit 441, thereby completing the shaping of the thin sheet 9, and then the third Y-axis cylinder 45 drives the reset;

[0038] In order to cooperate with the execution of the side-pushing mechanism, we also set up a lifting mechanism on the bottom surface of the base 8, which includes a second L-shaped support plate 46 that cooperates with the bottom surface of the base 8. The second L-shaped support plate 46 is connected to a second lifting cylinder 47. The second lifting cylinder 47 is used to drive the second L-shaped support plate 46 to perform lifting movement along the Z-axis direction to complete the support of the base 8, which is convenient for subsequent shaping, pressing down and other operations. The base in the transmission movement will have forward inertia. With the help of the short side of the second L-shaped support plate 46, the movement inertia of the base 8 can be offset, so that the base 8 is stabilized on the second L-shaped support plate 46.

[0039] like Figure 4 As shown, the gripping and conveying mechanism 3 includes a gantry stand 301 arranged across the upper cover conveying mechanism 1 and the base conveying mechanism 2, and a pushing base plate 302 is arranged below the crossbeam of the gantry stand 301 and on the upper cover conveying mechanism 1, and a slope is arranged on the side of the pushing base plate 302 facing the conveying direction, and a double-rod cylinder 303 and a U-shaped positioning block 304 are arranged opposite to each other at intervals, and the double-rod cylinder 303 is used to push the upper cover 7 entering the gap into the interior of the U-shaped positioning block 304, and the U-shaped positioning block 304 is closed on three sides and open on one side, which can play a role in limiting positioning and facilitate the subsequent pneumatic clamp to perform the gripping operation;

[0040] A second Y-axis guide rail 305 and a rodless cylinder 306 are arranged parallel to the Y-axis direction on the crossbeam of the gantry stand 301, a second Y-axis slider is arranged on the second Y-axis guide rail 305, the second Y-axis slider and the piston of the rodless cylinder 306 are connected to one end of a connecting piece 307, the other end of the connecting piece 307 is connected to a Z-axis guide rail 308, a Z-axis slider is arranged on the Z-axis guide rail 308, and one end of the Z-axis slider is connected to the Z-axis gas cylinder 306. The first end is connected to the cylinder 309, and the other end is connected to the pneumatic clamp 310. The pneumatic clamp 310 has a clamping claw and can be used to clamp the upper cover 7. The rodless cylinder 306 is used to drive the Z-axis guide rail 308 together with the Z-axis slider and the pneumatic clamp 310 to move along the second Y-axis guide rail 305. The Z-axis cylinder 309 is used to drive the pneumatic clamp 310 together with the upper cover 7 to move along the Z-axis guide rail 308, so that the corresponding position of the upper cover 7 passes through the thin sheet 9 and is placed on the base 8.

[0041] like Figure 5 As shown, the pressing mechanism 5 includes a plurality of pressing guide columns 51, such as four, which are arranged at intervals around the base. A second pressing plate 52 is mounted on all the pressing guide columns 51, the tops of which are fixedly connected to the pressing top plate 53, and the bottoms are fixedly arranged on two lateral stoppers 41. A pressing cylinder 54 is arranged on the pressing top plate 53, and the piston rod of the pressing cylinder 54 passes through the pressing top plate 53 and is connected to the top surface of the second pressing plate 52. Four pressing blocks 55 are arranged at intervals on the bottom surface of the second pressing plate 52. The positions of the four pressing blocks 55 match the four corners of the upper cover, and they are arranged symmetrically so as to evenly apply the downward pressure to the upper cover 7. The pressing cylinder 54 drives the second pressing plate 52 together with the two pressing blocks 55 to move in a direction close to or away from the base 8, so that the upper cover 7 can be pressed against the base 8 to complete the assembly.

[0042] like Figure 6 , 7 As shown, the side locking mechanism 6 includes a side pressing mechanism, an adjustment mechanism and a locking mechanism, which can fix the battery pack with the upper cover assembled from the upper and lower directions, and then perform the locking operation, as follows:

[0043] The side pressure mechanism is arranged above the battery pack with the upper cover assembled, and is used to apply downward pressure to the side of the battery pack with the upper cover assembled, including a plurality of side pressure guide columns 601, such as four, arranged at intervals around the battery pack with the upper cover assembled, and a first pressure plate 602 is mounted on all the side pressure guide columns 601, and the tops of the first pressure plates 602 are connected to the side pressure top plates 603, and a side pressure cylinder 604 is arranged on the side pressure top plates 603, and the piston rod of the side pressure cylinder 604 passes through the side pressure top plates 603 and is connected to the top surface of the first pressure plate 602, and the bottom surface of the first pressure plate 602 is spaced apart by two side pressure blocks 60 5. Notches that match the side edges of the battery pack assembled with the upper cover are provided at the bottom of the two side pressure blocks 605, so as to facilitate the fixation of the battery pack assembled with the upper cover. In this way, the side pressure cylinder 604 can drive the first pressure plate 602 together with the two side pressure blocks 605 to move in the direction close to or away from the battery pack assembled with the upper cover, i.e., move along the Z-axis direction, so that the notches can clamp the corresponding side edges, and the battery pack assembled with the upper cover can be fixed from above, so that the subsequent locking mechanism can perform the locking operation, or release the clamping of the notches and the corresponding side edges, so that the adjustment mechanism can drive the assembled battery to rotate;

[0044] The adjustment mechanism is arranged at the bottom of the battery pack with the upper cover assembled, and is used to drive the battery pack with the upper cover assembled to perform lifting and rotating movements, so as to facilitate the locking mechanism to implement the locking operation, and to support or release the support between the battery pack with the upper cover assembled, and comprises a first L-shaped support plate 606, the top surface of which cooperates with the bottom surface of the battery pack with the upper cover assembled, and the bottom surface of which is connected to a rotary cylinder 607, and the rotary cylinder 607 is arranged on a lifting base plate 608, and the bottom surface of the lifting base plate 608 is connected to a first lifting cylinder 609, so that the first lifting cylinder 60 9 drives the lifting base plate 608 together with the rotary cylinder 607 and the first L-shaped support plate 606 to perform lifting movement along the Z-axis direction, so as to complete the support or release of the battery pack with the upper cover, that is, to implement fixation from the bottom of the battery pack with the upper cover. The rotary cylinder 607 is used to drive the first L-shaped support plate 606 to perform rotational movement around the Z-axis direction, thereby driving the battery pack with the upper cover on the first L-shaped support plate 606 to rotate, such as rotating 180 degrees, so as to facilitate the subsequent locking mechanism to implement locking operations on different positions on two sides of different positions in the battery pack with the upper cover;

[0045] The locking mechanism is arranged on the side of the battery pack assembled with the upper cover, and is used to drive the locking driver to move and perform a locking operation on the upper cover and the base, including an X-axis guide rail 610 parallel to the conveying direction of the base conveying mechanism 2, an X-axis slider is arranged on the X-axis guide rail 610, the X-axis slider is connected to the bottom surface of the first Y-axis guide rail 611, and its side is connected to the X-axis cylinder 612, a first Y-axis slider is arranged on the first Y-axis guide rail 611, the first Y-axis slider is connected to the bottom surface of the locking driver 613, and its side is connected to the Y-axis cylinder 614, the X-axis cylinder 612 is used to drive the X-axis slider and the first Y-axis guide rail 611 to reciprocate along the X-axis guide rail, and the Y-axis cylinder 614 is used to drive the first Y-axis slider and the locking driver 613 to reciprocate along the first Y-axis guide rail 611, thereby driving the locking driver 613 to approach or move away from the battery pack assembled with the upper cover, and performing locking operations on different positions in the battery pack assembled with the upper cover.

[0046] When the automatic assembly device of the present invention is used to assemble the upper cover, the working process is as follows:

[0047] S1: The thin sheet assembled on the top of the base of the battery pack is adjusted to a vertical state through the shaping mechanism, and the two are kept parallel to ensure that the upper cover can pass through the thin sheet during the descent process;

[0048] S2: The upper cover is clamped and transported from the designated position of the upper cover conveying mechanism to the top of the base by the clamping and transporting mechanism;

[0049] S3: Driven by the Z-axis cylinder, the upper cover is driven through the sheet and placed on the base, and the pneumatic clamp releases the upper cover. At this time, the shaping mechanism is reset under the drive of the third Y-axis cylinder;

[0050] S4: Use the pressing mechanism to press down and lock the upper cover. At this time, the lifting mechanism is still working. The second lifting cylinder is used to lift the base, and the pressing mechanism and the pressing mechanism are used to press and fix the upper cover.

[0051] S5: The second lifting cylinder is used to drive the base to descend, so that the battery pack with the upper cover assembled can continue to be transported to the next station by the base transmission mechanism to implement the lateral locking operation;

[0052] S6: Use the first Y-axis cylinder in the lateral locking mechanism to adjust the position of the locking driver, such as the air-blowing locking gun, in the Y-axis direction, and use the X-axis cylinder to adjust the distance between the locking driver and the screw hole. After the alignment of the gun head and the screw hole is completed, the screw is screwed into the screw hole with the help of the locking driver to complete the locking of one side of the battery pack with the upper cover assembled. Then, the position of the battery pack with the upper cover assembled is adjusted by the rotary cylinder, and the screws on the other side are installed to complete the assembly of the entire battery pack.

[0053] It has been verified that the automatic assembly device of the present invention can accurately position and transport the upper cover of the battery pack, ensure that the upper cover of the battery pack is correctly placed on the base of the battery pack through the thin sheet through the shaping mechanism, and efficiently complete the fixation of the battery pack, use an air-blowing locking gun to assemble the screws, and use an adjustment mechanism to assist in tightening the screws on both sides. At the same time, the structure of the entire device is reasonable and the degree of automation is high, which not only ensures the assembly accuracy but also improves the assembly efficiency, and is more practical for mass production and has great application prospects.

[0054] Although specific embodiments of the present invention are described above, those skilled in the art should understand that these are merely examples and that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is limited by the appended claims.

Claims

1. An automatic assembly device for a battery pack cover, characterized in that: The battery pack includes a clamping and conveying mechanism, a shaping mechanism, a pressing mechanism, and a side locking mechanism arranged above the upper cover conveying mechanism and the base conveying mechanism. The upper cover conveying mechanism and the base conveying mechanism are arranged in parallel and are used to convey the upper cover of the battery pack and the base of the battery pack respectively. The shaping mechanism is arranged on the side of the base, and is used to adjust the parallelism of the sheet assembled on the base, so that it remains vertical and ensures that it matches the corresponding position of the upper cover; The clamping and conveying mechanism is arranged across the upper cover conveying mechanism and the base conveying mechanism, and is used to clamp and convey the upper cover to the top of the base, and then drive the upper cover to move downward, so that the upper cover passes through the sheet and is placed on the base; The downward pressure mechanism is arranged above the base and is used to assemble the upper cover onto the base by means of downward pressure; The side locking mechanism is arranged behind the pressing mechanism, and is used to perform locking operations on different positions of the upper cover and the base while applying downward pressure to the side of the battery pack assembled with the upper cover; The side locking mechanism includes a side pressing mechanism, an adjustment mechanism and a locking mechanism. The side pressing mechanism is arranged above the battery pack with the upper cover assembled, and is used to apply downward pressure to the side of the battery pack with the upper cover assembled; the adjustment mechanism is arranged at the bottom of the battery pack with the upper cover assembled, and is used to drive the battery pack with the upper cover assembled to perform lifting and rotating movements, so that the locking mechanism can perform locking operations and support or release the support between the battery pack with the upper cover assembled; the locking mechanism is arranged on the side of the battery pack with the upper cover assembled, and is used to drive the locking driver to move and perform locking operations on different positions of the upper cover and the base; The locking mechanism includes an X-axis guide rail parallel to the conveying direction of the base conveying mechanism, an X-axis slider is arranged on the X-axis guide rail, the X-axis slider is connected to the bottom surface of the first Y-axis guide rail, and its side is connected to the X-axis cylinder, a first Y-axis slider is arranged on the first Y-axis guide rail, the first Y-axis slider is connected to the bottom surface of the locking driver, and its side is connected to the Y-axis cylinder, the X-axis cylinder is used to drive the X-axis slider and the first Y-axis guide rail to reciprocate along the X-axis guide rail, and the Y-axis cylinder is used to drive the first Y-axis slider and the locking driver to reciprocate along the first Y-axis guide rail, thereby driving the locking driver to approach or move away from the battery pack assembled with the upper cover, and performing locking operations on different positions of the upper cover and the base; The side pressure mechanism comprises a plurality of side pressure guide columns arranged at intervals around the battery pack assembled with the upper cover, a first pressure plate is mounted on all the side pressure guide columns, the tops of the first pressure plates are connected to the side pressure top plates, a side pressure cylinder is arranged on the side pressure top plates, a piston rod of the side pressure cylinder passes through the side pressure top plates and is connected to the top surface of the first pressure plate, two side pressure blocks are arranged at intervals on the bottom surface of the first pressure plate, notches matching the side edges of the battery pack assembled with the upper cover are arranged at the bottoms of the two side pressure blocks, the side pressure cylinder is used to drive the first pressure plate together with the two side pressure blocks to move towards or away from the battery pack assembled with the upper cover, so that the notches thereof clamp the corresponding side edges, so that the locking mechanism performs the locking operation, or releases the clamping of the notches with the corresponding side edges, so that the adjustment mechanism drives the battery assembled with the upper cover to perform a rotational movement; The adjustment mechanism includes a first L-shaped support plate, the top surface of the first L-shaped support plate cooperates with the bottom surface of the battery pack assembled with the upper cover, and the bottom surface of the first L-shaped support plate is connected to the rotary cylinder, and the rotary cylinder is arranged on the lifting base plate, and the bottom surface of the lifting base plate is connected to the first lifting cylinder. The first lifting cylinder is used to drive the lifting base plate together with the rotary cylinder and the first L-shaped support plate to perform lifting motion along the Z-axis direction, and the rotary cylinder is used to drive the first L-shaped support plate to perform rotational motion around the Z-axis direction.

2. The automatic assembly device for the upper cover of the battery pack according to claim 1, characterized in that: The clamping and conveying mechanism includes a gantry frame arranged across the upper cover conveying mechanism and the base conveying mechanism, a second Y-axis guide rail and a rodless cylinder are arranged on the crossbeam of the gantry frame in parallel along the Y-axis direction, a second Y-axis slider is arranged on the second Y-axis guide rail, the second Y-axis slider and the piston of the rodless cylinder are both connected to one end of the connecting member, the other end of the connecting member is connected to the Z-axis guide rail, a Z-axis slider is arranged on the Z-axis guide rail, one end of the Z-axis slider is connected to the Z-axis cylinder, and the other end is connected to the pneumatic clamp, the pneumatic clamp is used to clamp the upper cover, the rodless cylinder is used to drive the Z-axis guide rail together with the Z-axis slider and the pneumatic clamp to move along the second Y-axis guide rail, and the Z-axis cylinder is used to drive the pneumatic clamp together with the upper cover to move along the Z-axis guide rail, so that the corresponding position of the upper cover passes through the sheet and is placed on the base; A pushing base plate is arranged below the cross beam of the gantry frame and on the upper cover conveying mechanism. A slope is arranged on the side of the pushing base plate facing the conveying direction, and a double-rod cylinder and a U-shaped positioning block are arranged opposite the interval thereon. The double-rod cylinder is used to push the upper cover entering the gap into the interior of the U-shaped positioning block.

3. The automatic assembly device for the upper cover of the battery pack according to claim 1, characterized in that: The shaping mechanism includes a side pushing mechanism arranged on the side of the base and a lifting mechanism arranged on the bottom surface of the base, the side pushing mechanism includes side blocks respectively matched with the two sides of the base, the two side blocks are arranged opposite to each other at the same height, and are provided with bayonet holes matched with the side surfaces of the base, a third Y-axis guide rail is arranged on one of the side blocks, a third Y-axis slider is arranged on the third Y-axis guide rail, one side of the third Y-axis slider is connected to the shaping plate, and the other side is connected to the third Y-axis cylinder, two guide slits are arranged on the shaping plate, and the positions and sizes of the two guide slits are matched with the positions and sizes of the two thin sheets already assembled on the base, and the third Y-axis cylinder is used to drive the shaping plate to move along the Y-axis direction so that the thin sheet can pass through the guide slit, thereby completing the shaping of the thin sheet; The lifting mechanism includes a second L-shaped support plate matched with the bottom surface of the base, the second L-shaped support plate is connected to a second lifting cylinder, and the second lifting cylinder is used to drive the second L-shaped support plate to perform lifting movement along the Z-axis direction; The pressing mechanism includes a plurality of pressing guide columns arranged at intervals around the base, a second pressing plate is mounted on all the pressing guide columns, the tops of which are connected to the pressing top plate, a pressing cylinder is arranged on the pressing top plate, a piston rod of the pressing cylinder passes through the pressing top plate and is connected to the top surface of the second pressing plate, four pressing blocks are arranged at intervals on the bottom surface of the second pressing plate, the four pressing blocks correspond to the four corners of the upper cover respectively, and the pressing cylinder is used to drive the second pressing plate together with the two pressing blocks to move towards or away from the battery pack to assemble the upper cover to the base.

4. The automatic assembly device for the upper cover of a battery pack according to claim 3, characterized in that: The bottoms of the downward pressing guide columns are respectively connected to the lateral stoppers, and the guide slits extend to the edges of the shaping plates, at the edges of which V-shaped notches are arranged.

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