Ultrasonic welding tool for composite material lower protective plate

Abstract

The utility model relates to the technical field of lower guard plate welding, in particular to a composite material lower guard plate ultrasonic welding tool which comprises a rack, a transverse moving device, a first positioning device, a second positioning device and an ultrasonic welding device. The transverse moving device reciprocates between a welding position and a material taking position; the first positioning device is used for positioning the main plate and the first reinforcing plate of each main body at the same time before welding; the second positioning device reciprocates between an original position and a preset position; a positioning channel group is arranged on the second positioning device; the second reinforcing plate, the third reinforcing plate and the plurality of reinforcing blocks of each main body are all placed on the main plate through the positioning channel group; the ultrasonic welding device is used for welding the first reinforcing plate, the second reinforcing plate, the third reinforcing plate and the multiple reinforcing blocks of each main body to the corresponding main plates. The non-metallic material pre-welding forming device has the advantages that non-metallic materials of different materials are subjected to pre-welding forming through the first positioning device and the second positioning device.

Description

Technical Field

[0001] This utility model relates to the field of lower guard plate welding technology, and in particular to an ultrasonic welding fixture for composite material lower guard plates. Background Technology

[0002] In recent years, some OEMs have adopted GFK (thermosetting resin impregnated glass fiber unidirectional fabric) and LFI (resin and glass fiber mixed spray material) to manufacture the lower guard plate of the battery casing for new energy vehicles using wet molding technology. However, there is currently no design for welding fixtures for lower guard plates with two main bodies made of lighter-weight multi-continuous glass fiber reinforced PP (polypropylene) thermoplastic composite materials. Utility Model Content

[0003] In view of this, the present invention aims to provide an ultrasonic welding fixture for a composite material lower guard plate, which uses a first positioning device, a second positioning device and an ultrasonic welding device to weld a first reinforcing plate, a second reinforcing plate, a third reinforcing plate and multiple reinforcing blocks to the corresponding main plate, and simultaneously completes the welding of the two main bodies.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an ultrasonic welding fixture for a composite material lower guard plate, the lower guard plate comprising two main bodies, each main body comprising a main plate, a first reinforcing plate, a second reinforcing plate, a third reinforcing plate, and multiple reinforcing blocks; the welding fixture comprising: a frame; a transverse movement device disposed on the frame, the transverse movement device reciprocating between a welding position and a material handling position; a first positioning device disposed on the transverse movement device, used to position the main plate and the first reinforcing plate of each main body before welding; a second positioning device disposed on the frame and located above the first positioning device; the second positioning device reciprocating between an original position and a predetermined position; the second positioning device is provided with a positioning channel group, through which the second reinforcing plate, the third reinforcing plate, and multiple reinforcing blocks of each main body are placed on the main plate; and an ultrasonic welding device disposed on the frame, the ultrasonic welding device being used to simultaneously weld the first reinforcing plate, the second reinforcing plate, the third reinforcing plate, and multiple reinforcing blocks of each main body to the corresponding main plate.

[0005] Furthermore, the frame includes a support, a mounting platform, four columns, and a top plate; the mounting platform is mounted on the support; the four columns are respectively located at the four corners of the mounting platform; each column is connected to the mounting platform and the top plate at both ends.

[0006] Furthermore, the transverse movement device includes a motor, a lead screw assembly, two linear guides, and a tray; the two linear guides are spaced apart on the frame; the fixed end of the motor is connected to the frame, the output end of the motor is connected to one end of the lead screw assembly, the other end of the lead screw assembly is rotatably connected to the frame via a bearing, and the lead screw assembly is located between the two linear guides; the tray is connected to the lead screw nut of the lead screw assembly and the sliders of the two linear guides respectively.

[0007] Furthermore, the first positioning device includes a first positioning plate and multiple limiting blocks; the first positioning plate is connected to the transverse movement device; the multiple limiting blocks enclose the first positioning plate into two positioning areas; each positioning area is provided with a positioning groove for positioning the first reinforcing plate of each main body.

[0008] Furthermore, the second positioning device includes a lifting plate assembly, a positioning channel group, and two first cylinders; the lifting plate assembly is provided with a positioning hole group, the positioning channel group passes through the positioning hole group and is connected to the lifting plate assembly; the lifting plate assembly is connected to the column through a first self-lubricating bearing; the two first cylinders are spaced apart along the moving direction of the transverse movement device; the fixed end of each first cylinder is connected to the top plate, and the output end of the first cylinder is connected to the lifting plate assembly; the two first cylinders together drive the lifting plate assembly to move along the length direction of the column.

[0009] Furthermore, the lifting plate assembly includes a lifting frame, a second positioning plate, a positioning block, and a connecting plate; both the second positioning plate and the positioning block are disposed on the lifting frame, and the positioning block is used to limit the position of the second positioning plate; the connecting plate is connected to the four corners of the lifting frame and is connected to the column through a first self-lubricating bearing; a positioning hole group is disposed on the second positioning plate; the positioning hole group includes a first positioning hole, a second positioning hole, and a third positioning hole; there are two first positioning holes, each corresponding to the position of a second reinforcing plate of a main body; there are two second positioning holes, each corresponding to the position of a third reinforcing plate of a main body; there are multiple third positioning holes, each corresponding to the position of a reinforcing block of a main body.

[0010] Furthermore, the positioning channel group includes a first positioning channel, a second positioning channel, and a third positioning channel; the number of first positioning channels is equal to the number of first positioning holes, and each first positioning channel passes through a first positioning hole and is connected to the second positioning plate; the number of second positioning channels is equal to the number of second positioning holes, and each second positioning channel passes through a second positioning hole and is connected to the second positioning plate; the number of third positioning channels is equal to the number of third positioning holes, and each third positioning channel passes through a third positioning hole and is connected to the second positioning plate.

[0011] Furthermore, the ultrasonic welding device includes a second cylinder, a movable plate, a first ultrasonic welding head assembly, and a second ultrasonic welding head assembly; the fixed end of the second cylinder is connected to the top plate, and the output end of the second cylinder is connected to the movable plate, which is connected to the column via a second self-lubricating bearing; the fixed end of the first ultrasonic welding head assembly is connected to the movable plate; the first ultrasonic welding head assembly is used to weld the second reinforcing plate, the third reinforcing plate, and multiple reinforcing blocks of each main body to the corresponding main body; the fixed end of the second ultrasonic welding head assembly is connected to the bracket; the second ultrasonic welding head assembly is used to weld the first reinforcing plate of each main body to the corresponding main body.

[0012] Furthermore, the welding fixture also includes a first laser sensor, a second laser sensor, a third laser sensor, a fourth laser sensor, a fifth laser sensor, a sensing plate, and a sensing switch; the first and second laser sensors are disposed on the tray, the first sensor is used to detect the first reinforcing plate, and the second laser sensor is used to detect the main board; the third, fourth, and fifth laser sensors are disposed on the upper surface of the second positioning device, the third sensor is used to detect the second reinforcing plate; the fourth laser sensor is used to detect the third reinforcing plate, and the fifth laser sensor is used to detect the reinforcing block; the sensing plate is disposed on the upper surface of the first positioning device, and the sensing switch is disposed on the upper surface of the second positioning device.

[0013] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0014] 1) Non-metallic materials of different materials are pre-welded and formed by using the first positioning device and the second positioning device.

[0015] 2) The first and second positioning devices can be used to weld the two main bodies at the same time, saving time and increasing production cycle.

[0016] 3) The first ultrasonic welding head group and the second ultrasonic welding head group can be used to weld the upper and lower surfaces simultaneously.

[0017] 4) By setting up a first laser sensor, a second laser sensor, a third laser sensor, a fourth laser sensor, and a fifth laser sensor, error prevention detection can be achieved to avoid incorrect or missing material loading, thereby improving product qualification rate and production efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is a structural schematic diagram of the lower guard plate provided according to an embodiment of the present utility model;

[0020] Figure 2 This is a structural schematic diagram of the welding fixture provided according to an embodiment of the present utility model;

[0021] Figure 3 This is a structural schematic diagram of the frame and transverse moving device (excluding the tray) provided according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the transverse movement device provided according to an embodiment of the present utility model;

[0023] Figure 5 This is a structural schematic diagram of the tray, the first laser sensor, and the second laser sensor provided according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first positioning device and the sensing plate provided according to an embodiment of the present utility model;

[0025] Figure 7 This is a structural schematic diagram of the second positioning device assembled with the column and top plate according to an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the second positioning plate, positioning channel group, third laser sensor, fourth laser sensor and fifth laser sensor provided according to the embodiments of this utility model;

[0027] Figure 9 This is a structural schematic diagram of the second positioning plate provided according to an embodiment of the present utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the first positioning channel provided according to an embodiment of the present utility model;

[0029] Figure 11 This is a schematic diagram of the assembly of the ultrasonic welding device with the column and the top plate according to the embodiment of this utility model.

[0030] The reference numerals in the attached drawings include: 10, lower guard plate; 11, main plate; 12, first reinforcing plate; 13, second reinforcing plate; 14, third reinforcing plate; 15, reinforcing block;

[0031] 20. Welding fixture; 21. Frame; 211. Bracket; 212. Mounting platform; 213. Column; 214. Top plate; 22. Horizontal movement device; 221. Motor; 222. Lead screw assembly; 223. Linear guide rail; 224. Tray; 2241. First sensing hole; 2242. Second sensing hole; 2243. First mounting slot; 2244. Second mounting slot; 23. First positioning device; 231. First positioning plate; 232. Limiting block; 233. Positioning area; 234. Handle; 235. Positioning groove; 236. Through hole; 237. Third sensing hole; 238. Fourth sensing hole; 24. Second positioning device; 241. Lifting plate assembly; 242. Positioning channel group; 2421. First positioning channel; 2421a. Connection Flange; 2421b, Cylinder; 2422, Second Positioning Channel; 2423, Third Positioning Channel; 243, First Cylinder; 244, Lifting Frame; 245, Second Positioning Plate; 246, Positioning Block; 247, Connecting Plate; 248, Positioning Hole Group; 2481, First Positioning Hole; 2482, Second Positioning Hole; 2483, Third Positioning Hole; 249, Fifth Sensing Hole; 25, Ultrasonic Welding Device; 251, Second Cylinder; 252, Moving Plate; 253, First Ultrasonic Welding Head Group; 254, Second Ultrasonic Welding Head Group; 26a, First Laser Sensor; 26b, Second Laser Sensor; 26c, Third Laser Sensor; 26d, Fourth Laser Sensor; 26e, Fifth Laser Sensor; 27, Sensing Plate; 28, Induction Switch. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and do not constitute a limitation thereof.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] This utility model provides an ultrasonic welding fixture for a composite material lower guard plate, such as... Figure 1 As shown, the lower guard plate 10 includes two main bodies, each including a main plate 11, a first reinforcing plate 12, a second reinforcing plate 13, a third reinforcing plate 14, and a plurality of reinforcing blocks 15. The first reinforcing plate 12 and the second reinforcing plate 13 are respectively disposed on two opposite surfaces of the main plate 11, and their positions correspond to each other. The second reinforcing plate 13, the third reinforcing plate 14, and the plurality of reinforcing blocks 15 are jointly disposed on the first surface of the main plate 11, and the plurality of reinforcing blocks 15 are located between the second reinforcing plate 13 and the third reinforcing plate 14. In this embodiment, the number of reinforcing blocks 15 is three.

[0038] like Figures 2 to 11 As shown, the welding fixture 20 includes: a frame 21, a transverse movement device 22, a first positioning device 23, a second positioning device 24, an ultrasonic welding device 25, a first laser sensor 26a, a second laser sensor 26b, a third laser sensor 26c, a fourth laser sensor 26d, a fifth laser sensor 26e, an induction plate 27, an induction switch 28, and a control system.

[0039] A transverse movement device 22 is mounted on the frame 21 and reciprocates between a welding position and a material handling position. A first positioning device 23 is mounted on the transverse movement device 22 and is used to position the main plate 11 and the first reinforcing plate 12 of each main body before welding. A second positioning device 24 is mounted on the frame 21 and located above the first positioning device 23. The second positioning device 24 reciprocates between the original position and the predetermined position. An ultrasonic welding device 25 is mounted on the frame 21 and is used to simultaneously weld the first reinforcing plate 12, the second reinforcing plate 13, the third reinforcing plate 14, and multiple reinforcing blocks 15 of each main body to the corresponding main plate 11.

[0040] In this embodiment, during ultrasonic welding by the ultrasonic welding device 25, the position of the first positioning device 23 is defined as the welding position. After welding is completed, the lateral movement device 22 moves the first positioning device 23 and the welded lower guard plate 10 out of the welding position to the material removal position, which is defined as the material removal position.

[0041] When the moving rod of the first cylinder 243 of the second positioning device 24 is not extended, the position of the second positioning plate 245 is defined as the original position. When the moving rod of the first cylinder 243 is extended, and the positioning channel group 242 contacts the first positioning plate 231, the position of the second positioning plate 245 is defined as the predetermined position.

[0042] The frame 21 includes a support 211, a mounting platform 212, four uprights 213, and a top plate 214. The mounting platform 212 is mounted on the support 211. The four uprights 213 are respectively located at the four corners of the mounting platform 212, and the two ends of each upright 213 are connected to the mounting platform 212 and the top plate 214, respectively.

[0043] The traversing device 22 includes a motor 221, a lead screw assembly 222, two linear guides 223, and a tray 224. The two linear guides 223 are spaced apart on the mounting platform 212. The fixed end of the motor 221 is connected to the mounting platform 212, and the output end of the motor 221 is connected to one end of the lead screw assembly 222. The other end of the lead screw assembly 222 is rotatably connected to the mounting platform 212 via a bearing, and the lead screw assembly 222 is located between the two linear guides 223. The tray 224 is connected to the lead screw nut of the lead screw assembly 222 and the sliders of the two linear guides 223.

[0044] A first sensing hole 2241 is provided on the tray 224 corresponding to the position of the first reinforcing plate 12, and a second sensing hole 2242 is provided corresponding to the position of the main board 11. A first mounting slot 2243 for mounting the first laser sensor 26a is provided around the first sensing hole 2241, and a second mounting slot 2244 for mounting the second laser sensor 26b is provided around the second sensing hole 2242. The first laser sensor 26a is installed in the first mounting slot 2243 and detects whether the first reinforcing plate 12 is positioned correctly through the first sensing hole 2241. The second laser sensor 26b is installed in the second mounting slot 2244 and detects whether the main board 11 is positioned correctly through the second sensing hole 2242.

[0045] The first positioning device 23 includes a first positioning plate 231, multiple limiting blocks 232, and four handles 234. The first positioning plate 231 is connected to a tray 224, and the multiple limiting blocks 232 enclose the first positioning plate 231 into two positioning areas 233. Each positioning area 233 corresponds to a main plate 11. A positioning groove 235 is provided on the first positioning plate 231 within each positioning area 233 for positioning the first reinforcing plate 12 of the corresponding main body. A through hole 236 is also provided in each positioning groove 235 for the second ultrasonic welding head assembly 254 of the ultrasonic welding device 25 to pass through and weld the first reinforcing plate 12 to the corresponding main plate 11. The four handles 234 are provided on the first positioning plate 231 and located outside the positioning area 233, making it convenient for workers to pick up and put down the first positioning device 23.

[0046] The first positioning plate 231 has a third sensing hole 237 corresponding to the position of the first sensing hole 2241, and a fourth sensing hole 238 corresponding to the position of the second sensing hole 2242. When the first reinforcing plate 12 is placed into the positioning groove 235, the first laser sensor 26a will detect the first reinforcing plate 12 through the first sensing hole 2241 and the third sensing hole 237. At this time, the indicator light of the first reinforcing plate 12 on the visual interface of the control system will turn green. Subsequently, when the main board 11 is placed in the positioning area 233, the second laser sensor 26b will detect the main board 11 through the second sensing hole 2242 and the fourth sensing hole 238. At this time, the indicator light of the main board 11 on the visual interface will also turn green.

[0047] In this embodiment, there are two sensing plates 27. The sensing plates 27 are disposed on the upper surface of the first positioning plate 231 and are respectively located at the opposite two side edges of the first positioning plate 231.

[0048] The second positioning device 24 includes a lifting plate assembly 241, a positioning channel group 242, and two first cylinders 243.

[0049] The lifting plate assembly 241 includes a lifting frame 244, a second positioning plate 245, positioning blocks 246, and a connecting plate 247. The second positioning plate 245 and positioning blocks 246 are both mounted on the lifting frame 244. The positioning blocks 246 are spaced apart along the moving direction of the transverse movement device 22 and located on opposite sides of the second positioning plate 245, used to limit the movement of the second positioning plate 245. The connecting plate 247 is connected to the four corners of the lifting frame 244 and is connected to the column 213 via a first self-lubricating bearing. The second positioning plate 245 has a group of positioning holes 248. A positioning channel group 242 passes through the group of positioning holes 248 and is connected to the second positioning plate 245. A through cylinder hole is also provided on the second positioning plate 245 corresponding to the positions of the two first cylinders 243, allowing the two first cylinders 243 to pass through and connect to the top plate 214. A fifth sensing hole 249 is provided on the second positioning plate 245 corresponding to the position of the sensing plate 27, and a sensing switch 28 is located at the edge of the fifth sensing hole 249.

[0050] The positioning hole group 248 includes a first positioning hole 2481, a second positioning hole 2482, and a third positioning hole 2483. There are two first positioning holes 2481, each corresponding to the position of a second reinforcing plate 13 on the main body. There are also two second positioning holes 2482, each corresponding to the position of a third reinforcing plate 14 on the main body. There are multiple third positioning holes 2483, each corresponding to the position of a reinforcing block 15 on the main body.

[0051] The third laser sensor 26c is located at the edge of the opposite side of each first positioning hole 2481 and is used to detect the second reinforcing plate 13. The fourth laser sensor 26d is located at the edge of the opposite side of the second positioning hole 2482 and is used to detect the third reinforcing plate 14. The fifth laser sensor 26e is located at the edge of the opposite side of the third positioning hole 2483 and is used to detect the reinforcing block 15. When the indicator lights of the second reinforcing plate 13, the third reinforcing plate 14, and the reinforcing block 15 are displayed in green on the visual interface of the control system, the second reinforcing plate 13, the third reinforcing plate 14, and the reinforcing block 15 are in place.

[0052] Two first cylinders 243 are spaced apart along the moving direction of the transverse moving device 22 and located on the outer sides of opposite sides of the second positioning plate 245. The fixed end of each first cylinder 243 is connected to the top plate 214, and the output end of the first cylinder 243 is connected to the lifting frame 244. The two first cylinders 243 together drive the lifting plate assembly 241 to move along the length of the column 213.

[0053] The positioning channel group 242 includes a first positioning channel 2421, a second positioning channel 2422, and a third positioning channel 2423. The number of first positioning channels 2421 is equal to the number of first positioning holes 2481, and each first positioning channel 2421 passes through a first positioning hole 2481 and is connected to the second positioning plate 245. The number of second positioning channels 2422 is equal to the number of second positioning holes 2482, and each second positioning channel 2422 passes through a second positioning hole 2482 and is connected to the second positioning plate 245. The number of third positioning channels 2423 is equal to the number of third positioning holes 2483, and each third positioning channel 2423 passes through a third positioning hole 2483 and is connected to the second positioning plate 245.

[0054] Specifically, the first positioning channel 2421 includes a connecting flange 2421a and a cylindrical body 2421b. The connecting flange 2421a is connected to the second positioning plate 245, and the cylindrical body 2421b extends downward through the first positioning hole 2481. The channel of the cylindrical body 2421b is adapted to the second reinforcing plate 13, allowing the second reinforcing plate 13 to be placed on the main plate 11 through the channel. The connecting flange 2421a has a clearance groove at the position corresponding to the third laser sensor 26c to avoid the third laser sensor.

[0055] The second positioning channel 2422 and the third positioning channel 2423 have the same structure as the first positioning channel 2421, and will not be described in detail here.

[0056] The ultrasonic welding device 25 includes a second cylinder 251, a movable plate 252, a first ultrasonic welding head assembly 253, and a second ultrasonic welding head assembly 254. The fixed end of the second cylinder 251 is connected to the top plate 214, and the output end of the second cylinder 251 is connected to the movable plate 252. The movable plate 252 is connected to the column 213 via a second self-lubricating bearing. The fixed end of the first ultrasonic welding head assembly 253 is connected to the movable plate 252. The first ultrasonic welding head assembly 253 is used to weld the second reinforcing plate 13, the third reinforcing plate 14, and multiple reinforcing blocks 15 of each main body to the corresponding main plate 11. The fixed end of the second ultrasonic welding head assembly 254 is connected to the bracket 211. The second ultrasonic welding head assembly 254 is used to weld the first reinforcing plate 12 of each main body to the corresponding main plate 11.

[0057] The first ultrasonic welding head group 253 consists of multiple first ultrasonic welding heads, which correspond to the welding positions of the second reinforcing plate 13, the third reinforcing plate 14, and the multiple reinforcing blocks 15 of each main body with the main body 11.

[0058] The second ultrasonic welding head group 254 consists of multiple first ultrasonic welding heads, each corresponding to the welding position of the first reinforcing plate 12 and the main plate 11 of each main body.

[0059] Referring to the attached diagram, the working process of the ultrasonic welding fixture for the composite material lower guard plate is as follows: First, the traversing device 22 moves the first positioning device 23 from the material picking position to the welding position. Next, the operator places the first reinforcing plate 12 in the positioning groove 235. At this time, the first laser sensor 26a detects the signal of the first reinforcing plate 12 and feeds it back to the control system of the welding fixture 20. Subsequently, the operator places the main board 11 in the positioning area 233. The second laser sensor 26b detects the signal of the main board 11 again and feeds it back to the control system. Afterward, the operator activates the control button of the control system, and the second positioning plate 245 of the second positioning device 24 descends, causing the inductive switch 28 to contact the inductive plate 27, and the second positioning plate 245 stops descending. At this time, the operator places the second reinforcing plate 13, the third reinforcing plate 14, and multiple reinforcing blocks 15 on the main board 11 through the corresponding first positioning channel 2421, second positioning channel 2422, and third positioning channel 2423. The third laser sensor 26c, the fourth laser sensor 26d, and the fifth laser sensor 26e detect the signals of these components and feed them back to the control system. Finally, the first ultrasonic welding head assembly 253 of the ultrasonic welding device 25 descends from its original position through the positioning hole assembly 248 to a predetermined position, welding the second reinforcing plate 13, the third reinforcing plate 14, and multiple reinforcing blocks 15 to the corresponding main board 11. Simultaneously, the second ultrasonic welding head assembly 254 welds the first reinforcing plate 12 to the corresponding main board 11. Finally, the first ultrasonic welding head assembly 253 returns to its original position, and the traversing device 22 moves the first positioning device 23 from the welding position to the material removal position, whereby the worker removes the welded main body. During this process, if the first laser sensor 26a, the second laser sensor 26b, the third laser sensor 26c, the fourth laser sensor 26d, the fifth laser sensor 26e, the sensing plate 27, and the sensing switch 28 fail to detect the corresponding first reinforcing plate 12, main board 11, second reinforcing plate 13, third reinforcing plate 14, and reinforcing blocks 15, the control system will be unable to execute the next operation.

[0060] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An ultrasonic welding fixture for a composite material lower guard plate, the lower guard plate comprising two main bodies, each main body comprising a main plate, a first reinforcing plate, a second reinforcing plate, a third reinforcing plate, and a plurality of reinforcing blocks; characterized in that, Welding fixtures include: frame; A transverse movement device is mounted on the frame and reciprocates between a welding position and a material handling position. A first positioning device is disposed on the transverse moving device and is used to position the main body and the first reinforcing plate of each of the main bodies before welding. The second positioning device is disposed on the frame and located above the first positioning device; the second positioning device reciprocates between the original position and the predetermined position; the second positioning device is provided with a positioning channel group, and the second reinforcing plate, the third reinforcing plate and multiple reinforcing blocks of each main body are placed on the main board through the positioning channel group; An ultrasonic welding device is mounted on the frame and is used to simultaneously weld the first reinforcing plate, the second reinforcing plate, the third reinforcing plate, and multiple reinforcing blocks of each of the main bodies to the corresponding main body.

2. The ultrasonic welding fixture for the composite material lower guard plate according to claim 1, characterized in that, The frame includes a support, a mounting platform, four columns, and a top plate; the mounting platform is mounted on the support; the four columns are respectively located at the four corners of the mounting platform; each column is connected to the mounting platform and the top plate at both ends.

3. The ultrasonic welding fixture for the composite material lower guard plate according to claim 1, characterized in that, The transverse movement device includes a motor, a lead screw assembly, two linear guides, and a tray; the two linear guides are spaced apart on the frame; the fixed end of the motor is connected to the frame, the output end of the motor is connected to one end of the lead screw assembly, the other end of the lead screw assembly is rotatably connected to the frame via a bearing, and the lead screw assembly is located between the two linear guides; the tray is connected to the lead screw nut of the lead screw assembly and the slider of the two linear guides respectively.

4. The ultrasonic welding fixture for the composite material lower guard plate according to claim 1, characterized in that, The first positioning device includes a first positioning plate and a plurality of limiting blocks; the first positioning plate is connected to the transverse moving device; the plurality of limiting blocks enclose the first positioning plate into two positioning areas; each positioning area is provided with a positioning groove for positioning the first reinforcing plate of each of the main bodies.

5. The ultrasonic welding fixture for the composite material lower guard plate according to claim 2, characterized in that, The second positioning device includes a lifting plate assembly, a positioning channel group, and two first cylinders; The lifting plate assembly is provided with a group of positioning holes, and the positioning channel group passes through the group of positioning holes and is connected to the lifting plate assembly. The lifting plate assembly is connected to the column via a first self-lubricating bearing; Two first cylinders are spaced apart along the moving direction of the transverse device; the fixed end of each first cylinder is connected to the top plate, and the output end of the first cylinder is connected to the lifting plate assembly; the two first cylinders together drive the lifting plate assembly to move along the length direction of the column.

6. The ultrasonic welding fixture for the composite material lower guard plate according to claim 5, characterized in that, The lifting plate assembly includes a lifting frame, a second positioning plate, a positioning block, and a connecting plate; the second positioning plate and the positioning block are both disposed on the lifting frame, and the positioning block is used to limit the position of the second positioning plate; the connecting plate is connected to the four corners of the lifting frame and is connected to the column through a first self-lubricating bearing; The positioning hole group is disposed on the second positioning plate; the positioning hole group includes a first positioning hole, a second positioning hole and a third positioning hole; The number of the first positioning holes is two, and each first positioning hole corresponds to the position of a second reinforcing plate of the main body; The number of the second positioning holes is two, and each second positioning hole corresponds to the position of a third reinforcing plate of the main body; There are multiple third positioning holes, and each third positioning hole corresponds to the position of a reinforcing block of the main body.

7. The ultrasonic welding fixture for the composite material lower guard plate according to claim 6, characterized in that, The positioning channel group includes a first positioning channel, a second positioning channel, and a third positioning channel; The number of the first positioning channels is equal to the number of the first positioning holes, and each of the first positioning channels passes through a first positioning hole and is connected to the second positioning plate; The number of the second positioning channels is equal to the number of the second positioning holes, and each second positioning channel passes through a second positioning hole and is connected to the second positioning plate; The number of the third positioning channels is equal to the number of the third positioning holes, and each of the third positioning channels passes through a third positioning hole and is connected to the second positioning plate.

8. The ultrasonic welding fixture for the composite material lower guard plate according to claim 2, characterized in that, The ultrasonic welding device includes a second cylinder, a movable plate, a first ultrasonic welding head assembly, and a second ultrasonic welding head assembly. The fixed end of the second cylinder is connected to the top plate, and the output end of the second cylinder is connected to the movable plate. The movable plate is connected to the column through a second self-lubricating bearing. The fixed end of the first ultrasonic welding head assembly is connected to the movable plate; the first ultrasonic welding head assembly is used to weld the second reinforcing plate, the third reinforcing plate, and multiple reinforcing blocks of each of the main bodies to the corresponding main body. The fixed end of the second ultrasonic welding head assembly is connected to the bracket; the second ultrasonic welding head assembly is used to weld the first reinforcing plate of each of the main bodies to the corresponding main body.

9. The ultrasonic welding fixture for the composite material lower guard plate according to claim 3, characterized in that, The welding fixture also includes a first laser sensor, a second laser sensor, a third laser sensor, a fourth laser sensor, a fifth laser sensor, an induction plate, and an induction switch; The first sensor and the second laser sensor are disposed on the tray. The first sensor is used to detect the first reinforcing plate, and the second laser sensor is used to detect the motherboard. The third sensor, the fourth laser sensor, and the fifth laser sensor are disposed on the upper surface of the second positioning device. The third sensor is used to detect the second reinforcing plate, the fourth laser sensor is used to detect the third reinforcing plate, and the fifth laser sensor is used to detect the reinforcing block. The sensing plate is disposed on the upper surface of the first positioning device, and the sensing switch is disposed on the upper surface of the second positioning device.

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