Ultrasonic welding jig

Abstract

The utility model discloses an ultrasonic welding jig which comprises a movable seat arranged on a machine table, a bottom die is arranged on the movable seat, a plurality of rows of inlaying grooves which are transversely arranged at intervals and longitudinally arranged at intervals are formed in the bottom die, a cushion block is arranged in each inlaying groove, the cushion blocks and the inlaying grooves enclose to form a containing groove, and the bottom die is movably connected with an upper die in a butt joint mode. Welding grooves are formed in the positions, right opposite to the containing grooves, of the upper die, welding holes penetrating through the upper die are formed in the welding grooves, and the bottom die is used for bearing the battery module collection flat cables and positioning and fixing connecting points of the battery module collection flat cables through the containing grooves; the upper die is used for pressing a battery module collection flat cable, so that each welding hole is aligned with one corresponding connection point; the movable seat is used for driving the bottom die, the upper die and the battery module collection flat cable for die assembly to transversely and intermittently move, so that one welding hole of at least one row of welding holes is aligned with a welding head of the ultrasonic welding machine; and the ultrasonic welding machine is used for driving the welding heads to penetrate into the corresponding welding holes so as to weld the connecting points supported by the cushion blocks.

Description

Technical Field

[0001] This utility model relates to the field of battery pack acquisition harness processing technology, and in particular to ultrasonic welding fixtures. Background Technology

[0002] In related technologies, the CCS integrated busbar is an electrical connection structure within the battery module. By integrating information acquisition components (wire harness / FPC / FFC+FCC+FDC, etc.), plastic structural components, aluminum busbars, and other components into a module and installing it within the battery module, it enables functions such as high-voltage series and parallel connection of battery cells, battery temperature sampling, battery cell voltage sampling, and overcurrent fuse protection.

[0003] In related technologies, for FPC acquisition busbars, the FPC cables need to be welded to the acquisition busbars. Although ultrasonic welding machines are used to weld the busbars and cables to the FPC acquisition busbars, the connection points between the busbars and cables are not supported during the welding process, and there are deviations between the welding points and the connection points, resulting in weak welds or welding errors on the FPC acquisition busbars after welding. At the same time, due to the limited stroke of the welding head of the ultrasonic welding machine, ultrasonic welding is only suitable for fixed-point welding. The ultrasonic welding machines in these technologies cannot perform multi-point continuous welding, resulting in low welding efficiency for FPC acquisition busbars.

[0004] There is no effective solution yet to address the problems of high welding defect rate and low welding efficiency of FPC acquisition busbars in existing related technologies. Utility Model Content

[0005] In view of this, it is necessary to provide an ultrasonic welding fixture to at least solve the problems of high welding defect rate and low welding efficiency of FPC acquisition busbar in related technologies.

[0006] The present invention adopts the following technical solution: an ultrasonic welding fixture, installed on the machine base of an ultrasonic welding machine, includes a movable base movably mounted on the machine base, a bottom mold on the movable base, and multiple rows of horizontally spaced and vertically spaced slots on the bottom mold. Each slot contains a pad to seal the bottom of the slot, the pad and the slot forming a receiving groove. The bottom mold is also movably connected to an upper mold located directly above it. The upper mold has a welding groove at the position corresponding to each receiving groove, and the welding groove has a welding hole penetrating the upper mold.

[0007] The bottom mold is used to support the battery module acquisition cable to be welded, and the connection point of the battery module acquisition cable is positioned and fixed through the receiving groove.

[0008] The upper mold is used to close with the bottom mold to press the battery module acquisition cable together and align each welding hole with a corresponding connection point.

[0009] The movable seat is used to drive the bottom mold, the upper mold and the battery module acquisition cable to move laterally intermittently during the driven lateral movement, so that one of the welding holes in at least one row of welding holes is aligned with the welding head of the ultrasonic welding machine.

[0010] The ultrasonic welding machine is used to drive the welding head to pass through the corresponding welding hole in order to weld the connection point supported by the pad.

[0011] In some embodiments, a mounting base is fixedly mounted on the machine base, and a plurality of guide members are provided on the mounting base extending laterally and spaced longitudinally. The movable seat is movably connected to the guide members and can move laterally along the guide members to drive the bottom mold, the upper mold and the battery module acquisition cable to move laterally.

[0012] In some embodiments, the guide includes one of the following: a linear guide rail or a limiting groove slide rail.

[0013] In some embodiments, a row of horizontally spaced limiting holes is provided on the longitudinally spaced space between two adjacent guide members on the mounting base. The upper mold, the bottom mold, and the movable seat are respectively provided with a first pin hole and a second pin hole spaced along the longitudinal direction on their lateral sides. A first positioning pin is provided in the first pin hole, and a second positioning pin is provided in the second pin hole. After the movable seat drives the bottom mold and the upper mold to move laterally so that a welding hole is aligned with the welding head, the first positioning pin passes through the first pin hole on the bottom mold and falls down to be embedded in the corresponding limiting hole, and the second positioning pin passes through the second pin hole on the bottom mold and falls down to be embedded in the corresponding limiting hole, so that the mounting base is fixedly positioned with the movable seat, the bottom mold, and the upper mold.

[0014] In some embodiments, each of the top corners on both sides of the movable seat is provided with a stop, and the four stops surround to form an accommodating space. After the bottom mold and the upper mold are closed, the bottom mold is pushed longitudinally into the accommodating space, and in conjunction with a preset reference point, the bottom mold and the upper mold are placed in a set position.

[0015] In some embodiments, lifting handles are fixed to the sides of both sides of the bottom mold in the lateral direction.

[0016] In some embodiments, positioning posts are provided at the four top corners of the bottom mold, and positioning holes are provided at the positions of the upper mold directly opposite the positioning posts. After the battery module acquisition cable is assembled onto the bottom mold and the positioning posts pass through the positioning through holes of the battery module acquisition cable, they are inserted into the corresponding positioning holes so that the bottom mold and the upper mold are positioned and closed, and the battery module acquisition cable is positioned and loaded.

[0017] In some embodiments, the bottom mold has four rows of receiving grooves, and the upper mold has four rows of welding grooves.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This application provides an ultrasonic welding fixture, including a movable base movably mounted on a machine platform. The movable base has a bottom mold, and the bottom mold has multiple rows of horizontally spaced and vertically spaced slots. Each slot has a pad block that seals the bottom of the slot. The pad block and the slot form a receiving groove. The bottom mold is also movably connected to an upper mold located directly above it. The upper mold has a welding groove at the position corresponding to each of the receiving grooves. The welding groove has a welding hole that penetrates the upper mold. The bottom mold carries the battery module acquisition cable to be welded and positions and fixes the connection point of the battery module acquisition cable through the receiving groove. The upper mold presses the battery module acquisition cable together and aligns each welding hole with a corresponding connection point. The movable base drives the closed bottom mold, upper mold, and battery module acquisition cable to move laterally intermittently so that at least one welding hole in one row of welding holes is aligned with the welding head of the ultrasonic welding machine. The pad block is used as a support to make the ultrasonic welding... When the welding head is inserted into the welding hole and aligned with the connection point of a battery module acquisition cable for welding, the support is positioned below the connection point to prevent the cable from detaching from the busbar due to being suspended below, ensuring a firm weld between the cable and the busbar. Multiple welding grooves are set on the upper mold, with welding holes at these grooves for the welding head to insert into. When the connection point is placed within the welding hole, the cable and busbar are connected at the welding position, preventing deviation between the connection point and the welding point and reducing the welding defect rate. Furthermore, a transmission moving seat drives the bottom mold, upper mold, and battery module acquisition cable in a laterally intermittent movement after mold closing, sequentially moving multiple connection points of the battery module acquisition cable below the welding head for welding, achieving continuous welding and improving welding efficiency. Additionally, by rotating the bottom mold, upper mold, and battery module acquisition cable in the closed state and then performing another laterally intermittent movement, the welding of all connection points of the entire battery module acquisition cable is completed through two laterally movements, further improving welding efficiency. Attached Figure Description

[0019] Figure 1 This is a perspective view of an embodiment of this application;

[0020] Figure 2This is another perspective view of an embodiment of this application;

[0021] Figure 3 This is an exploded view of an embodiment of this application;

[0022] Figure 4 This is a partially exploded view of an embodiment of this application.

[0023] Attached Figure

[0024] 001. Receiving groove; 002. First pin hole; 003. Second pin hole; 004. Receiving space;

[0025] 100. Ultrasonic welding machine; 11. Machine base; 12. Welding head;

[0026] 200. Movable seat; 21. Clip;

[0027] 300. Bottom mold; 301. Insert groove; 302. Positioning post;

[0028] 400, spacer blocks;

[0029] 500. Upper mold; 501. Welding groove; 502. Welding hole; 503. Positioning hole;

[0030] 600. Mounting base; 601. Limiting hole;

[0031] 700. Guide components;

[0032] 800, positioning pin;

[0033] 900, Raise your hand;

[0034] 110. Second positioning pin; Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] See Figures 1 to 4 This application provides an ultrasonic welding fixture, mounted on the machine base 11 of an ultrasonic welding machine 100. It includes a movable base 200 movably mounted on the machine base 11, a bottom mold 300 on the movable base 200, and multiple rows of horizontally spaced and vertically spaced slots 301 on the bottom mold 301. Each slot 301 contains a pad 400 for bottom sealing, and the pad 400 and the slot 301 together form a receiving groove 001. The bottom mold 300 is also movably connected to an upper mold 500 located directly above it. The upper mold 500 has welding grooves 501 at positions corresponding to each receiving groove 001, and each welding groove 501 has a welding hole 502 penetrating the upper mold 500.

[0039] The bottom mold 300 is used to support the battery module acquisition cable to be welded, and the connection point of the battery module acquisition cable is located through the receiving groove 001.

[0040] In this embodiment, the pad 400 blocks each corresponding groove 301 from the bottom end of the bottom mold 300 upwards, thereby forming a receiving groove 001 at the upper end of the bottom mold 300 and the upper mold 500 when they are molded together. It can be understood that each receiving groove 001 is matched with the connection point of the battery module acquisition cable (e.g., CCS integrated busbar) in the set position. When the battery module acquisition cable is placed on the bottom mold 300, each connection point (the point to be welded) will be embedded in the receiving groove 001. The receiving groove 001 is used to accommodate and accurately position and fix the battery module acquisition cable, and also fixes the welding point in the set position.

[0041] The upper mold 500 is used to close with the bottom mold 300 to press together the battery module acquisition wiring and to align each welding hole 502 with a corresponding connection point.

[0042] In this embodiment, after the upper mold 500 and the bottom mold 300 are closed, the upper mold 500 will press the battery module acquisition cable onto the bottom mold 300 and press each connection point into the receiving groove 001. At the same time, the upper mold 500 above the receiving groove 001 is provided with a welding groove 501, and the welding hole 502 is directly opposite the receiving groove 001.

[0043] It is understood that the bottom mold 300 and the upper mold 500 in this embodiment can also be used as a single-sided pressing fixture for hot-pressing battery module acquisition cables. That is, the battery module acquisition cables to be molded are placed on the bottom mold 300, and then the upper mold 500 and the bottom mold 300 are closed and pressed by a pressing machine. After pressing the product, the closed mold is sent to the machine base 11 of the ultrasonic welding machine 100 for ultrasonic direct welding of the battery module acquisition cables. The movable seat 200 is used to drive the closed bottom mold 300 and the upper mold 500 to move the battery module acquisition cables laterally intermittently during the driven lateral movement, so that one welding hole 502 of at least one row of welding holes 502 is aligned with the welding head 12 of the ultrasonic welding machine 100.

[0044] In this embodiment, four rows of welding holes 502 are formed on the bottom mold 300 and the upper mold 500. During a single lateral movement of the moving seat 200, the longitudinal stroke of the welding head 12 of the ultrasonic welding machine 100 is sufficient to weld the connection points placed in the two rows of welding holes 502. That is, when the moving seat 200 moves laterally once intermittently, the welding head 12 will weld the connection points in the two welding holes 502 placed in the corresponding positions. It should be understood that, due to the limitation of the longitudinal stroke of the welding head of the ultrasonic welding machine 100, it is not possible to complete the welding of the connection points in the four rows of welding holes 502 in one go. After completing the welding of the two rows of welding holes 502 on one side of the longitudinal direction, the bottom mold 300, the upper mold 500 and the battery module acquisition cable after mold closing are rotated and reversed before being laterally conveyed again to weld the connection points in the two rows of welding holes 502 on the other side of the longitudinal direction.

[0045] An ultrasonic welding machine 100 is used to drive the welding head 12 to penetrate the corresponding welding hole 12 in order to weld the connection point supported by the pad 400.

[0046] In the aforementioned ultrasonic welding fixture, a bottom mold 300 supports the battery module acquisition cable to be welded, and the connection point of the battery module acquisition cable is positioned and fixed by a receiving groove 001. An upper mold 500 presses the battery module acquisition cable together, aligning each welding hole 502 with a corresponding connection point. A movable seat 200 drives the closed bottom mold 300, upper mold 500, and battery module acquisition cable to move laterally intermittently, so that at least one welding hole 502 of a row of welding holes 502 is aligned with the welding head 12 of the ultrasonic welding machine 100. A pad 400 is used as a support, so that when the ultrasonic welding machine 100 drives the welding head 12 to extend into the welding hole 502 and align with the connection point of a battery module acquisition cable for welding, the pad supports the connection point below, preventing the cable from detaching from the busbar due to the lower part being suspended during welding, ensuring a firm weld between the cable and the busbar. Multiple welding grooves 501 are set on the upper mold 500, and welding holes 502 are set at the welding grooves 501 for the welding head 12 to extend into. When the connection point is placed in the welding hole 502, the cable and the busbar are connected at the welding position, avoiding deviation between the connection point and the welding point and reducing the welding defect rate. The transmission moving seat 200 drives the bottom mold 300, the upper mold 500 and the battery module acquisition cable after the mold is closed to move laterally in an intermittent manner, so that multiple connection points of the battery module acquisition cable are moved sequentially to the underside of the welding head 12 for welding, realizing continuous welding and improving welding efficiency. Furthermore, by rotating the bottom mold 300, the upper mold 500 and the battery module acquisition cable in the mold-closed state and changing their direction, another intermittent lateral movement is performed. The welding of all connection points of the entire battery module acquisition cable is completed through two lateral movements, which improves welding efficiency.

[0047] To enable the movable seat 200 to move laterally, refer to Figures 1 to 3 In some embodiments, a mounting base 600 is fixed on the machine base 11. The mounting base 600 is provided with a plurality of guide members 700 that extend laterally and are spaced apart longitudinally. The movable seat 200 is movably connected to the guide members 700 and can move laterally along the guide members 700 to drive the bottom mold 300, the upper mold 500 and the battery module acquisition cable to move laterally.

[0048] Understandably, with this setup, by manually pushing the movable seat 200, the movable seat 200 drives the bottom mold 300 and the upper mold 500 to move laterally, so that each of the welding holes 502 in a row of welding holes 502 located at the rear end of the longitudinal side is moved sequentially to a position directly below the welding head 12. In conjunction with the longitudinal stroke allowed by the welding head 12, the connection points in the two rows of welding holes 502 located on the longitudinal side are welded, thereby improving welding accuracy and welding efficiency.

[0049] In some of the alternative embodiments, the guide 700 that enables the movable seat 200 to move laterally all meet the requirements of the guide 700 in the embodiments of this application. For example, the guide 700 can be a linear guide or a limiting groove slide rail.

[0050] To achieve the positioning and fixation of the movable base 200, bottom mold 300, and upper mold 500 after the movable base 200 drives the bottom mold 300 and upper mold 500 to move laterally into place, refer to... Figures 1 to 4 In some embodiments, a row of laterally spaced limiting holes 601 are provided on the longitudinally spaced space between two adjacent guide members 700 on the mounting base 600. The upper mold 500, bottom mold 300, and movable seat 200 each have first pin holes 002 and second pin holes 003 spaced longitudinally on their lateral sides. A first positioning pin 800 is provided in the first pin hole 002, and a second positioning pin 110 is provided in the second pin hole 003. The movable seat 200... After the movable bottom mold 300 and the upper mold 500 move laterally to align a welding hole 001 with the welding head 12, the first positioning pin 800 passes through the first pin hole 002 on the bottom mold 300 and falls into the corresponding limiting hole 601, and the second positioning pin 110 passes through the second pin hole 002 on the bottom mold 300 and falls into the corresponding limiting hole 601, so that the mounting base 600 is limited and fixed with the movable base 200, the bottom mold 300 and the upper mold 500.

[0051] In this embodiment, the length of the first positioning pin 800 is greater than the length of the second positioning pin 110. Through the cooperation of the long pin and the short pin, the upper mold 500, the bottom mold 300, the movable seat 200 and the mounting base 600 are relatively fixed during welding. The first positioning pin 800 is used to fix the upper mold 500, the bottom mold 300, the movable seat 200 and the mounting base 600, and the second positioning pin 110 is used to fix the upper mold 500, the bottom mold 300 and the movable seat 200.

[0052] It is understandable that this setting, using the limiting holes 601 set at preset intervals, ensures that after the first positioning pin 800 and the second positioning pin 110 fall and are correspondingly embedded in the limiting holes 601, it not only fixes the moving seat 200, the bottom mold 300 and the upper mold 500, but also places a welding hole 502 directly below the welding head 12, achieving lateral positioning matching between the welding hole 502 and the welding head 12, avoiding welding errors caused by deviations between the welding point and the connection point, and ensuring accurate welding of the connection point.

[0053] To enable rapid assembly of the bottom mold 300 and upper mold 500 after rotation and edge changing, refer to Figures 1 to 4In some embodiments, each of the top corners on both sides of the movable seat 200 is provided with a stop 21, and the four stops 21 surround to form a receiving space 004. After the bottom mold 300 and the upper mold 500 are closed, they are pushed longitudinally into the receiving space 004, and in conjunction with the preset reference point, the bottom mold 300 and the upper mold 500 are placed in a set position.

[0054] To achieve the lifting of the bottom mold 300 and the upper mold 500 after mold closing, refer to Figures 1 to 4 In some embodiments, lifting handles 900 are fixed on both sides of the bottom mold 300 in the lateral direction.

[0055] With this setup, it can be understood that by lifting the handle 900, the bottom mold 300 and the upper mold 500 can be lifted together; at the same time, by lifting the handle 900, the bottom mold 300 can also be pushed laterally, thereby causing the movable seat 200 to move laterally.

[0056] To achieve mold closing between the bottom mold 300 and the upper mold 500, refer to Figure 4 In some embodiments, positioning posts 302 are provided at the four top corners of the bottom mold 300, and positioning holes 503 are provided at the positions of the upper mold 500 directly opposite the positioning posts 302. When the battery module acquisition cable is assembled onto the bottom mold 300, the positioning posts 302 are inserted into the corresponding positioning holes 503 after passing through the positioning through holes of the battery module acquisition cable, so that the bottom mold 300 and the upper mold 500 are positioned and closed, and the battery module acquisition cable is positioned and loaded.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. An ultrasonic welding jig installed on a machine table (11) of an ultrasonic welding machine (100), characterized by, The mobile seat (200) is movably arranged on the machine table (11), and a bottom die (300) is arranged on the mobile seat (200). The bottom die (300) is provided with a plurality of rows of transversely spaced and longitudinally arranged inlay grooves (301). Each inlay groove (301) is provided with a gasket (400) for sealing the bottom of the inlay groove (301). The gasket (400) and the inlay groove (301) form a containing groove (001). The bottom die (300) is movably connected with an upper die (500) arranged above the bottom die (300). The upper die (500) is provided with a welding groove (501) corresponding to each containing groove (001). The welding groove (501) is provided with a welding hole (502) penetrating through the upper die (500). The bottom die (300) is used for bearing the battery module collection flat cable to be welded and positioning and fixing the connection point of the battery module collection flat cable through the containing groove (001). The upper die (500) is used for closing with the bottom die (300) to press the battery module collection flat cable and align each welding hole (502) with a corresponding connection point. The mobile seat (200) is used for driving the closed bottom die (300), the upper die (500) and the battery module collection flat cable to move transversely intermittently during transverse movement to align one welding hole (502) of at least one row of welding holes (502) with the welding head (12) of the ultrasonic welding machine (100). The ultrasonic welding machine (100) is used for driving the welding head (12) to penetrate into the corresponding welding hole (502) to weld the connection point supported by the gasket (400).

2. The ultrasonic welding tool of claim 1, wherein, The machine table (11) is provided with a mounting base (600) fixedly arranged thereon. The mounting base (600) is provided with a plurality of guide members (700) extending transversely and arranged longitudinally. The mobile seat (200) is movably connected with the guide members (700) and can move transversely along the guide members (700) to drive the closed bottom die (300), the upper die (500) and the battery module collection flat cable to move transversely.

3. The ultrasonic welding tool of claim 2, wherein, The guide member (700) includes one of the following: a linear guide rail and a limiting groove sliding rail.

4. The ultrasonic welding tool of claim 2, wherein, The installation base (600) is provided with a row of transversely spaced limiting holes (601) in the space longitudinally spaced between two adjacent guide members (700), the upper die (500), the bottom die (300) and the moving seat (200) are respectively provided with a first pin hole (002) and a second pin hole (003) spaced in the longitudinal direction on the two lateral sides, the first pin hole (002) is provided with a first positioning pin (800), and the second pin hole (003) is provided with a second positioning pin (110), wherein after the moving seat (200) drives the bottom die (300) and the upper die (500) to move transversely to make one of the welding holes (502) opposite to the welding head (12), the first positioning pin (800) falls and is embedded in the corresponding limiting hole (601) after penetrating out of the first pin hole (002) on the bottom die (300), and the second positioning pin (110) falls and is embedded in the corresponding limiting hole (601) after penetrating out of the second pin hole (003) on the bottom die (300), so that the installation base (600) is limited and fixed with the moving seat (200), the bottom die (300) and the upper die (500).

5. The ultrasonic welding tool of claim 2, wherein, Each of the four corners of the moving seat (200) is provided with a clamping stop (21), and the four clamping stops (21) form a containing space (004), wherein the bottom die (300) and the upper die (500) are longitudinally pushed into the containing space (004) after being combined, and cooperate with the preset reference point to make the bottom die (300) and the upper die (500) be positioned at the set position.

6. The ultrasonic welding tool of claim 1, wherein, The side of the bottom die (300) is provided with a lifting hand (900).

7. The ultrasonic welding tool of claim 1, wherein, The four corners of the bottom die (300) are provided with positioning columns (302), and the upper die (500) is provided with positioning holes (503) opposite to the positioning columns (302), wherein after the battery module collection flat cable is assembled on the bottom die (300) and the positioning columns (302) pass through the positioning through holes of the battery module collection flat cable and are inserted into the corresponding positioning holes (503), the bottom die (300) and the upper die (500) are positioned and combined, and the battery module collection flat cable is positioned and loaded.

8. The ultrasonic welding tool of claim 1, wherein, The bottom die (300) is formed with four rows of containing grooves (001), and the upper die (500) is provided with four rows of welding grooves (501).

Images