Double-PIN seat welding and assembling equipment of ultrasonic sensor

Abstract

The utility model discloses double-PIN seat welding and assembling equipment for an ultrasonic sensor. The double-PIN seat welding and assembling equipment comprises a plurality of carriers, a turntable, a turntable driving mechanism, a feeding detection mechanism, a wire cutting mechanism, a welding mechanism, an assembling mechanism and an electric control device, the multiple carriers are evenly arranged on the rotary disc in the circumferential direction, and each carrier is used for flatly placing and positioning the double-PIN base and positioning the two wires to be welded. The feeding detection mechanism is used for detecting whether the carrier bears the double-PIN seat to be subjected to wire bonding or not and sending a detection result to the electrical control device. The wire cutting mechanism is used for cutting out two wires with preset lengths and transferring the two cut wires to the carrier. The welding mechanism is used for welding the two sheared wires to the first ends of a pair of PINs of the double-PIN seat respectively. And the assembling mechanism is used for installing the welded double-PIN seat in the ultrasonic sensor shell. The welding device is high in welding efficiency, and the quality stability of welded products is good.

Description

Technical Field

[0001] The utility model relates to the manufacturing technology of ultrasonic sensors. Background Art

[0002] Figure 1 The cross-sectional schematic diagram of an existing ultrasonic sensor without filling material is shown. Please refer to Figure 1 , the ultrasonic sensor includes an ultrasonic sensor housing 91, a piezoelectric ceramic sheet 93 and a double PIN socket 95.

[0003] The ultrasonic sensor housing 91 includes an ultrasonic sensor housing body 91a and a top shell 91b. The ultrasonic sensor housing body 91a is made of a metal material (usually aluminum), includes a bottom wall 911 and a peripheral wall portion 912. The bottom end of the peripheral wall portion 912 is connected to the periphery of the bottom wall 911, and the top end of the peripheral wall portion 912 is connected to the top shell 91b. The ultrasonic sensor housing body 91a and the top shell 91b jointly define an inner cavity 910. Among them, the top shell 91b includes a front cover 913, an upper shell 914 and an elastic shock-absorbing sleeve 915. The front cover 913 and the upper shell 914 are made of plastic, and the elastic shock-absorbing sleeve 915 is made of rubber. The elastic shock-absorbing sleeve 915 is sleeved outside the upper part of the ultrasonic sensor housing body 91a, the front cover 913 is sleeved outside the elastic shock-absorbing sleeve 915, and the bottom of the upper shell 914 is detachably connected to the top of the front cover 913.

[0004] The piezoelectric ceramic sheet 93 is arranged on the bottom wall 911 by pasting. Please refer to Figure 2 As shown, the double PIN socket 95 is arranged in the inner cavity 910, and the housing 91 (top shell 91b) is provided with a positioning groove for accommodating the double PIN socket 95. The double PIN socket 95 includes a double PIN socket body 951 and a pair of PIN pins 952. The pair of PIN pins 952 passes through the double PIN socket body 951. Among them, the first ends 953 of the pair of PIN pins 952 extend out of the bottom of the double PIN socket body 951 and are used to be welded to the positive and negative electrodes of the piezoelectric ceramic sheet 93 through wires, and the second ends 954 of the pair of PIN pins extend out of the top of the double PIN socket body 951 and are used to be welded and connected to the PCBA board.

[0005] At present, the work of welding the double PIN socket 95 to the positive and negative electrodes of the piezoelectric ceramic sheet 93 through wires mainly relies on manual operation, and only one wire is welded each time. There are disadvantages such as high labor intensity of workers and low welding efficiency, which are difficult to meet the requirements of mass production. Moreover, the wires currently used are relatively thick, affecting the performance of the product. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a double PIN socket welding and assembling device for ultrasonic sensors with high automation degree, high welding efficiency and good quality stability of welded products.

[0007] An embodiment of the utility model provides a double PIN socket welding and assembling device for an ultrasonic sensor, which includes a plurality of carriers, a turntable, a turntable driving mechanism, a feeding detection mechanism, a wire cutting mechanism, a welding mechanism, an assembling mechanism and an electrical control device; the plurality of carriers are uniformly arranged on the turntable in the circumferential direction, and each carrier is used for laying flat and positioning the double PIN socket and positioning two wires to be welded. The double PIN socket includes a double PIN socket body and a pair of PIN needles, and the pair of PIN needles pass through the double PIN socket body. Among them, the first ends of the pair of PIN needles extend out of the bottom of the double PIN socket body, and the second ends of the pair of PIN needles extend out of the top of the double PIN socket body; the turntable driving mechanism is used to drive the turntable to rotate intermittently, so as to drive each carrier to pass through the workstations corresponding to the wire cutting mechanism, the welding mechanism and the assembling mechanism in turn; the feeding detection mechanism is used to detect whether the carrier has received the double PIN socket to be welded, and send the detection result to the electrical control device; the wire cutting mechanism is used to cut out two wires with a predetermined length and transfer the cut two wires to the carrier; the welding mechanism is used to weld the cut two wires to the first ends of a pair of PIN needles of the double PIN socket respectively; the assembling mechanism is used to install the welded double PIN socket in the ultrasonic sensor housing; the electrical control device is used to control the operation of the turntable driving mechanism, the wire cutting mechanism, the welding mechanism and the assembling mechanism.

[0008] The embodiment of the utility model has at least the following advantages:

[0009] 1. Compared with the prior art, the double PIN socket welding and assembling device for the ultrasonic sensor according to the embodiment of the utility model has a high degree of automation, reduces the workload and labor cost of operators, improves the welding efficiency, and can meet the needs of large-scale production;

[0010] 2. The double PIN socket welding and assembling device for the ultrasonic sensor according to the embodiment of the utility model can ensure that the welding position and the assembling position are completely consistent, and improves the quality stability of the ultrasonic sensor products. Description of the Drawings

[0011] Figure 1 Shows a cross-sectional schematic view of an ultrasonic sensor that has not been filled with filling material yet.

[0012] Figure 2 Shows a schematic diagram of an existing PIN socket.

[0013] Figure 3 Shows a schematic diagram of the overall structure of a double PIN socket welding and assembling device for an ultrasonic sensor according to an embodiment of the utility model.

[0014] Figure 4Shows a schematic diagram of a vehicle, a turntable, a turntable drive mechanism, and a feeding detection mechanism according to an embodiment of the present invention.

[0015] Figure 5 Shows a partial schematic diagram of a vehicle according to an embodiment of the present invention.

[0016] Figure 6 Shows a schematic diagram of a vehicle and its cover plate switching mechanism according to an embodiment of the present invention.

[0017] Figures 7 to 11 Respectively show partial schematic diagrams of a wire cutting mechanism according to an embodiment of the present invention from different angles.

[0018] Figure 12 Shows a schematic diagram of a bending assembly according to an embodiment of the present invention.

[0019] Figure 13 Shows a schematic diagram of a welding mechanism according to an embodiment of the present invention.

[0020] Figure 14 Shows a structural schematic diagram of an assembly mechanism according to an embodiment of the present invention.

[0021] Figure 15 Shows a structural schematic diagram of a wire correction mechanism according to an embodiment of the present invention.

[0022] Figure 16 Shows an electrical control schematic diagram of a double PIN socket welding and assembly device for an ultrasonic sensor according to an embodiment of the present invention. Detailed implementation manners

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please refer to Figures 3 to 16 . The double PIN socket welding and assembly device for an ultrasonic sensor according to an embodiment of the present invention includes a plurality of carriers 1, a turntable 21, a turntable drive mechanism 22, a feeding detection mechanism 3, a wire cutting mechanism 4, a welding mechanism 5, an assembly mechanism 6, and an electrical control device 7.

[0025] A plurality of carriers 1 are uniformly arranged on the turntable 21 in the circumferential direction. Each carrier 1 is used to horizontally place and position the double PIN socket 95 and position the two wires to be welded. Specifically, each carrier 1 includes a base 11, a cover plate 12, a pivot 13, a pivot seat 14 and a first torsion spring 15. The base 11 is arranged on the turntable 21. On the top surface of the base 11, there is a positioning groove 115 for accommodating the double PIN socket 95 and two wire positioning parts 116 for respectively positioning the two wires 80 to be welded. The positioning groove 115 penetrates the bottom surface of the turntable 21 at a position 115a corresponding to the first ends 953 of a pair of PIN pins 952, so as to facilitate the implementation of resistance welding. The cover plate 12 is used to cover the positioning groove 115 to further fix the positions of the double PIN socket 95 placed in the positioning groove 115 and the two wires placed in the wire positioning parts. The pivot seat 14 is fixed to the base 11. The middle part of the cover plate 12 is pivotally connected to the pivot seat 14 through the pivot 13. The first torsion spring 15 is sleeved outside the pivot 14 and applies an elastic force to the cover plate 12 to close the cover plate 12. Each wire positioning part 116 includes two rows of pins 117 arranged side by side. The wire is positioned in the gap between the two rows of pins 117, which can ensure that the wire 80 does not deform inside the carrier and is accurately aligned with the first ends 953 of a pair of PIN pins 952.

[0026] The turntable driving mechanism 22 is used to drive the turntable 21 to rotate intermittently, so as to drive each carrier 1 to sequentially pass through the workstations corresponding to the loading and inspection mechanism 3, the wire cutting mechanism 4, the welding mechanism 5 and the assembly mechanism 6.

[0027] In this embodiment, the turntable 21 is annular, the number of carriers 1 is four, and the interval between every two adjacent carriers 1 is 90°. The turntable driving mechanism includes a turntable driving motor 221. Each time the turntable 21 rotates, one carrier 1 corresponding to the workstations of the loading and inspection mechanism 3, the wire cutting mechanism 4, the welding mechanism 5 and the assembly mechanism 6 runs into place. The ultrasonic sensor double PIN socket welding and assembly equipment includes a central disk 81 and three groups of cover plate switching mechanisms 82; the central disk 81 is arranged at the central hole of the turntable 21, and the three groups of cover plate switching mechanisms are fixed on the central disk 81 and are respectively arranged at the workstations corresponding to the loading and inspection mechanism, the wire cutting mechanism and the assembly mechanism; each group of cover plate switching mechanisms 82 includes an opening cylinder 821, the push rod 822 of the opening cylinder 821 extends downward, and a roller 823 is arranged at the top end of the push rod 822, and the roller 823 abuts against the top surface of the cover plate 12.

[0028] The loading and detecting mechanism 3 is used to detect whether the carrier 1 has received the double PIN socket 95 of the wire to be welded, and send the detection result to the electric control device 7. The loading and detecting mechanism 3 includes a first distance measuring sensor 31; the first distance measuring sensor 31 is arranged above the turntable 21 to detect the distance between the first distance measuring sensor 31 and the double PIN socket 95 placed in the positioning groove 115, compare the distance measuring result with a preset distance range, and send the comparison result to the electric control device 7. When the distance does not exceed the preset distance range, it indicates that the carrier 1 has received the double PIN socket 95, and when it exceeds the preset distance range, it indicates that the carrier 1 has not received the double PIN socket 95. In other embodiments, if the first distance measuring sensor 31 itself does not have the function of setting the distance range and comparing the distance measuring result with the preset distance range, the detected distance can be directly sent to the electric control device 7, and the electric control device 7 sets the distance range and compares the distance measuring result with the preset distance range to obtain the comparison result. In this embodiment, the first distance measuring sensor 31 is an infrared distance measuring sensor.

[0029] The wire cutting mechanism 4 is used to cut out two wires 80 with a predetermined length and transfer the two cut wires 80 to a pair of wire positioning parts 116 of the carrier 1 respectively. The wire cutting mechanism 4 includes a cutting base 41, a bending and cutting fixing frame 42, two pairs of wire clamping parts, a pair of bending assemblies 44, a pair of wire cutting assemblies 45, a wire feeding sub-mechanism and a handling sub-mechanism.

[0030] The cutting base 41 is arranged beside the turntable 21, and the bending and cutting fixing frame 42 is fixed on the cutting base 41 and is in the shape of a gantry. Each pair of wire clamping parts includes a movable wire clamping part 431 and a fixed wire clamping part 432. The fixed wire clamping part 432 is fixedly arranged on the cutting base 41. The movable wire clamping part 431 is located in front of the fixed wire clamping part 432 and is movably arranged on the cutting base 41 to pick up wires from the wire feeding sub-mechanism. Specifically, a guide rail is arranged on the cutting base 41, and a slider matched with the guide rail is arranged at the bottom of the movable wire clamping part 431. The movable wire clamping part 431 is driven by a translation cylinder 46. Each movable wire clamping part 431 and each fixed wire clamping part 432 are pneumatic clamps.

[0031] A pair of bending assemblies 44 and a pair of wire cutting assemblies 45 are respectively installed on the bending and cutting fixing frame 42; each bending assembly 44 is used to bend the wire clamped by a movable wire clamping part 431 and a fixed wire clamping part 432, and each wire cutting assembly 45 is used to cut the bent wire into a wire with a predetermined length.

[0032] In this embodiment, each bending assembly 44 includes a rotary electric cylinder 441, a bending sleeve 442, and a rotary electric cylinder translation mechanism 443. The bending sleeve 442 is connected to the rotary electric cylinder 441. A pair of convex columns 444 are provided at the top of the bending sleeve 442. The gap between the pair of convex columns 444 is used to accommodate the wire 80. The rotary electric cylinder 441 is used to drive the bending sleeve 442 to rotate from the initial position to the bending position. When the bending sleeve 442 is in the initial position, the pair of convex columns 444 are arranged horizontally side by side, as Figure 12 shown. When the bending sleeve 442 is in the bending position, the pair of convex columns 444 are arranged vertically, that is, the rotary electric cylinder 441 drives the bending sleeve 442 to rotate by 90°. The rotary electric cylinder translation mechanism 443 is used to drive the rotary electric cylinder 441 to translate, so as to approach or move away from the wire to be bent. Optionally, the rotary electric cylinder translation mechanism 443 is a rotary electric cylinder translation cylinder 443. The rotary electric cylinder translation cylinder 443 is fixed to the bending and cutting fixing frame 42 and is connected to the rotary electric cylinder 441.

[0033] In this embodiment, each wire cutting assembly 45 includes a pneumatic scissors 451 and a lifting cylinder 452 for driving the pneumatic scissors 451 to lift.

[0034] The wire supply sub-mechanism is used to convey the wire 80 to the movable wire clamping parts 431 of the two pairs of wire clamping parts. Specifically, the wire supply sub-mechanism includes a pair of wire winding wheels 471 for winding the wire 80 and a plurality of wire seats 472. Each wire seat 472 includes a seat body 4721 and a wire hole 4722 provided on the seat body 4721. In this embodiment, the wire hole 4722 is the hole of a wire tube. The wire 80 is a silver wire with a diameter of 0.1 mm. The silver wire has characteristics such as high tension, strong flexibility, and easy deformation. Preferably, the silver wire is a silver-coated copper wire with high tension. The above-mentioned plurality of wire seats 472 include intermediate wire seats located between the movable wire clamping parts and the fixed wire clamping parts of each pair of wire clamping parts. Each bending assembly 44 is used to bend the section of the wire located between the movable wire clamping part and the intermediate wire seat, and each wire cutting assembly 45 is used to cut the section of the wire that has been bent and is located between the movable wire clamping part and the intermediate wire seat.

[0035] The handling sub - mechanism is used to transfer two wires cut to a predetermined length to the two wire positioning parts 116 of the carrier 1. Specifically, the handling sub - mechanism includes a handling fixed seat 480, a pneumatic gripper 481, a gripper lifting mechanism 482 and a gripper translation mechanism 483. The gripper lifting mechanism 482 is connected to the pneumatic gripper 481 and is used to drive the pneumatic gripper 481 to rise or fall; the gripper translation mechanism 483 is connected to the gripper lifting mechanism 482 and is used to drive the gripper lifting mechanism to translate. In a specific implementation manner, the gripper lifting mechanism 482 and the gripper translation mechanism 483 are respectively composed of a Z - axis electric cylinder 482 and an X - axis electric cylinder 483. The handling fixed seat 480 is fixed on the cutting base 41, the X - axis electric cylinder 483 is fixed on the handling fixed seat 480 and can move along the X - axis direction; the Z - axis electric cylinder 482 is fixed on the side of the X - axis electric cylinder 483.

[0036] The welding mechanism 5 is used to weld the two cut wires to the first ends 953 of a pair of PIN pins 952 of the double - PIN seat 95 respectively. The welding mechanism 5 includes a resistance welder 51, a frame 52 and a frame translation mechanism 53. The resistance welder 51 is arranged on the frame 52, the frame 52 is arranged beside the turntable 21 in a horizontally movable manner, and the frame translation mechanism 53 is used to drive the frame 52 to translate to approach or move away from the turntable 21. The resistance welder 51 itself has a positive welding electrode, a negative welding electrode and a mechanism for driving the positive and negative welding electrodes to move up and down. Optionally, the frame translation mechanism 53 is composed of a frame translation cylinder 53.

[0037] The assembly mechanism 6 is used to install the welded double - PIN seat in the ultrasonic sensor housing 91. The assembly mechanism includes a workbench 61, a tooling base 62, a double - PIN seat handling mechanism 63 and a wire straightening mechanism 64. The workbench 61 is arranged beside the turntable 21, the tooling base 62 is arranged on the workbench 61, and the tooling base 62 is used to carry the ultrasonic sensor housing 91; the double - PIN seat handling mechanism 63 is used to rotate the double - PIN seat 95 with welded wires by 90°, so that the double - PIN seat 95 changes from a horizontal placement to a vertical placement, then transports it to the wire straightening mechanism 64, and puts the double - PIN seat 95 with straightened wires into the ultrasonic sensor housing 91.

[0038] The double - PIN seat handling mechanism 63 includes a manipulator 631, a manipulator base 632, a manipulator rotation electric cylinder 633 for driving the manipulator to rotate, a manipulator translation electric cylinder 634 for driving the manipulator to translate, a manipulator lifting electric cylinder 635 for driving the manipulator to lift and an electric cylinder seat 636. The manipulator rotation electric cylinder 633 is fixed to the manipulator base 632 and is connected to the manipulator 631. The manipulator 631 is connected to an air pipe and can suck the double - PIN seat 95 in the form of air extraction when it is displaced above the double - PIN seat 95. The manipulator translation electric cylinder 634 is fixed to the electric cylinder seat 636, and the manipulator lifting electric cylinder 635 is connected to the manipulator translation electric cylinder 634.

[0039] The wire correction mechanism 64 is used to bend the wire connected to the negative electrode of the piezoelectric ceramic sheet 93 of the ultrasonic sensor to a predetermined position to achieve the correction effect, so as to ensure the consistency of the wire position after the double PIN socket 95 is placed into the ultrasonic sensor housing 91 after welding. Please refer to Figure 14 The wire correction mechanism 64 includes a movable clamping plate 641, a fixed seat 642, a pivot shaft 643, a second torsion spring (not shown in the figure), and a bending cylinder 645. The fixed seat 642 is vertically arranged. The middle part of the movable clamping plate 641 is pivotally connected to the fixed seat 642 through the pivot shaft 643. The second torsion spring is sleeved outside the pivot shaft 643 and applies an elastic force to the movable clamping plate 641 to make the top of the movable clamping plate 641 away from the fixed seat 642. The push rod of the bending cylinder 645 is connected to the bottom of the movable clamping plate 641 to drive the top of the movable clamping plate 641 to approach or move away from the fixed seat 642, so that the wire connected to the negative electrode of the piezoelectric ceramic sheet of the ultrasonic sensor is pressed by the movable clamping plate 641 on the surface of the fixed seat 642 or can be removed from between the top of the movable clamping plate 641 and the fixed seat 642.

[0040] Further, the assembly mechanism 6 includes a second distance measuring sensor 65. The second distance measuring sensor 65 is arranged on the side of the tooling base 62 to detect the distance between the second distance measuring sensor 65 and the ultrasonic sensor housing 91 placed in the tooling base 62, compare the distance measurement result with a preset distance range, and send the comparison result to the electrical control device 7. When the preset distance range is not exceeded, it indicates that the ultrasonic sensor housing 91 is received on the tooling base 62, and when the preset distance range is exceeded, it indicates that the ultrasonic sensor housing 91 is not received on the tooling base 62. In other embodiments, if the second distance measuring sensor 65 itself does not have the function of setting a distance range and comparing the distance measurement result with a preset distance range, the detected distance can be directly sent to the electrical control device 7, and the electrical control device 7 sets the distance range and compares the distance measurement result with the preset distance range to obtain a comparison result. In this embodiment, the second distance measuring sensor 65 is an infrared distance measuring sensor.

[0041] The electrical control device 7 is used to control the operation of the turntable drive mechanism 22, the wire cutting mechanism 4, the welding mechanism 5, and the assembly mechanism 6.

[0042] In this embodiment, the electrical control device 7 includes a control switch 71 and a controller 72. The output terminals of the first distance measuring sensor 31, the second distance measuring sensor 65, and the control switch 71 are respectively connected to the controller 72. The controller 72 is configured to control the operations of the turntable drive motor 221, the lid opening cylinder 821, the movable wire clamping member 431, the fixed wire clamping member 432, the translation cylinder 46, the rotary cylinder 441, the rotary cylinder translation cylinder 443, the pneumatic scissors 451, the lifting cylinder 452, the pneumatic gripper 481, the Z-axis cylinder 482, the X-axis cylinder 483, the frame translation cylinder 53, the manipulator translation cylinder 634, the manipulator lifting cylinder 635, and the bending cylinder 645. Optionally, the control switch 71 is a push-button switch, and the controller 72 is a PLC controller.

[0043] The working process of the double PIN socket welding and assembling device for the ultrasonic sensor according to the embodiment of the present invention is generally as follows.

[0044] During operation, first place the first double PIN socket 95 of the wire to be welded on the carrier 1 at the corresponding station of the loading and inspection mechanism 3, and place the first ultrasonic sensor housing 91 to be assembled into the tooling base 62. If the detection by the first distance measuring sensor 31 and the second distance measuring sensor 65 fails, the controller 72 will give an alarm prompt message to remind the operator to place the corresponding parts. After the detection passes, the operator presses the control switch 71, and the controller 72 will control the turntable drive motor 221 to drive the turntable 21 to rotate until the turntable 21 rotates to the station corresponding to the wire cutting mechanism 4 and then stops. Subsequently, the movable wire clamping member 431 in each pair of wire clamping members moves forward, clamps the wire 80 from the intermediate wire seat 472 between the pair of wire clamping members, and then retreats to the original position. The rotary cylinder translation cylinder 443 drives the rotary cylinder 441 to move forward and enters the area between the movable wire clamping member 431 and the intermediate wire seat 472. The wire 80 enters between a pair of convex columns 444, and then the rotary cylinder 441 drives the bending sleeve 442 to rotate from the initial position to the bending position to fold the wire 80 into a Z shape. Subsequently, the pneumatic scissors 451 descend and enter the area between the movable wire clamping member 432 and the intermediate wire seat 472 to cut the bent wire. The handling sub-mechanism transfers the two Z-shaped wires cut to a predetermined length to a pair of wire positioning parts 116 of the carrier 1. When the handling sub-mechanism is handling, the controller 72 controls the cover plate switch mechanism 82 at the same station to open the cover plate 12 on the carrier 1 and controls the cover plate switch mechanism 82 to close the cover plate 12 on the carrier 1 after the handling operation is completed. During this period, another carrier 1 will rotate to the station corresponding to the loading and inspection mechanism 3. Each time the turntable 21 rotates, the controller 72 will control the cover plate switch mechanism 82 at the corresponding stations of the loading and inspection mechanism 3 and the assembly mechanism 6 to open the cover plate 12 of the carrier 1. The second group of double PIN sockets 95 are placed on the carrier 1 at the corresponding station of the loading and inspection mechanism 3 by manual or robotic arm feeding for the aforementioned loading and inspection operation. After the operator presses the control switch 71 again, the controller 72 will control the turntable drive motor 221 to drive the turntable 21 to continue rotating forward, driving the first group of double PIN sockets 95 to rotate to the station corresponding to the welding mechanism 5 and then stop. The frame translation cylinder 53 pushes the frame 52 forward, and then the resistance welder 51 welds the two cut wires to the first ends 953 of a pair of PIN pins 952 of the double PIN socket 95 respectively. When the first group of double PIN sockets 95 are being welded, the second group of double PIN sockets 95 rotate to the station corresponding to the wire cutting mechanism 4 to perform wire cutting, and the third group of double PIN sockets 95 are placed on the carrier 1 at the corresponding station of the loading and inspection mechanism 3 by manual or robotic arm feeding to perform loading and inspection. After the welding is completed and the operator presses the control switch 71 again, the controller 72 will control the turntable drive motor 221 to drive the turntable 21 to rotate, driving the first group of double PIN sockets 95 to rotate to the station corresponding to the assembly mechanism 6 and then stop.The controller 72 controls the operation of the double PIN socket handling mechanism 63, rotates the double PIN socket 95 with the wires welded in the carrier 1 by 90°, changes the double PIN socket 95 from horizontal placement to vertical placement, and then transports it to the wire straightening mechanism 64. The push rod of the bending cylinder 645 extends, and the movable clamping plate 641 rotates and presses the wire connected to the negative electrode of the piezoelectric ceramic sheet of the ultrasonic sensor against the surface of the fixed seat 642 to achieve straightening. Subsequently, the double PIN socket handling mechanism 63 places the double PIN socket 95 with the wires straightened into the ultrasonic sensor housing 91, and then the assembled ultrasonic sensor housing 91 is taken away by a human or a robotic arm.

[0045] Compared with the prior art, the double PIN socket welding and assembly equipment of the ultrasonic sensor according to the embodiment of the present invention has a high degree of automation, reduces the workload and labor cost of operators, improves the welding efficiency, and can meet the needs of large-scale production.

[0046] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A double PIN socket welding assembly equipment for ultrasonic sensors, characterized in that: It includes multiple carriers, turntables, turntable driving mechanisms, feeding and detecting mechanisms, wire cutting mechanisms, welding mechanisms, assembly mechanisms and electrical control devices; The plurality of carriers are evenly arranged on the turntable along the circumferential direction, and each carrier is used to lay and position the double PIN seat and two wires to be welded, the double PIN seat comprises a double PIN seat body and a pair of PIN needles, the pair of PIN needles pass through the double PIN seat body, wherein the first ends of the pair of PIN needles extend out of the bottom of the double PIN seat body, and the second ends of the pair of PIN needles extend out of the top of the double PIN seat body; The turntable driving mechanism is used to drive the turntable to rotate intermittently, so as to drive each of the carriers to pass through the workstations corresponding to the wire cutting mechanism, the welding mechanism and the assembly mechanism in sequence; The feeding detection mechanism is used to detect whether the carrier has received the double PIN socket of the wire to be welded, and send the detection result to the electrical control device; The wire cutting mechanism is used to cut out two wires of a predetermined length and transfer the cut two wires to a carrier; The welding mechanism is used to weld the two cut wires to the first ends of a pair of PIN pins of the double PIN socket respectively; The assembly mechanism is used to install the welded double PIN socket in the ultrasonic sensor housing; The electrical control device is used to control the operation of the turntable driving mechanism, the wire cutting mechanism, the welding mechanism and the assembling mechanism.

2. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 1, characterized in that: Each of the carriers includes a base, which is arranged on the turntable. The top surface of the base is provided with a positioning groove for accommodating the double PIN seat and two wire positioning parts for respectively positioning two wires to be welded. The positioning groove passes through the bottom surface of the turntable at a position corresponding to the first end of a pair of PIN needles.

3. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 2, characterized in that: Each of the carriers comprises a cover plate, a pivot, a pivot seat and a first torsion spring, wherein the cover plate is used to cover the positioning groove, the pivot seat is fixed to the base, the middle part of the cover plate is pivotally connected to the pivot seat through the pivot, and the first torsion spring is sleeved outside the pivot and applies an elastic force to the cover plate to close the cover plate; The turntable is annular; the double PIN socket welding assembly equipment of the ultrasonic sensor includes a center disk and three groups of cover switch mechanisms; the center disk is arranged at the center hole of the turntable, and the three groups of cover switch mechanisms are fixed on the center disk and are respectively arranged at the workstations corresponding to the feeding detection mechanism, the wire cutting mechanism, and the assembly mechanism; each group of cover switch mechanisms includes a cover opening cylinder, a push rod of the cover opening cylinder extends downward, a roller is provided at the top end of the push rod, and the roller abuts against the top surface of the cover.

4. The double PIN socket welding assembly equipment of the ultrasonic sensor as claimed in claim 2, characterized in that: The feeding detection mechanism includes a first distance measuring sensor; The first distance measuring sensor is arranged above the turntable to detect the distance between the first distance measuring sensor and the double PIN seat placed in the positioning groove, compare the distance measuring result with the preset distance range, and send the comparison result to the electrical control device.

5. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 1, characterized in that: The wire cutting mechanism comprises a cutting base, a bending and cutting fixing frame, two pairs of wire clamping parts, a pair of bending components, a pair of wire cutting components, a wire supply sub-mechanism and a conveying sub-mechanism; The cutting base is arranged beside the rotating disk, and the bending and cutting fixing frame is fixed on the cutting base; Each pair of thread clamping parts includes a movable thread clamping part and a fixed thread clamping part, the fixed thread clamping part is fixedly arranged on the cutting base, and the movable thread clamping part is located in front of the fixed thread clamping part and can be moved forward and backward on the cutting base to take the thread from the thread supply sub-mechanism; The pair of bending assemblies and the pair of wire cutting assemblies are respectively installed on the bending, cutting and fixing frame; each bending assembly is used to bend the wire clamped by a movable wire clamping component and a fixed wire clamping component, and each wire cutting assembly is used to cut the bent wire into a wire of a predetermined length; The wire supply sub-mechanism is used to deliver the wire to the movable wire clamping parts of the two pairs of wire clamping parts; The transport sub-mechanism is used to transfer the two wires cut into a predetermined length to the carrier.

6. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 5, characterized in that: The wire supply sub-mechanism includes a pair of winding wheels for winding wires and a plurality of wire seats, each of which includes a seat body and a wire hole arranged on the seat body; The multiple wire seats include an intermediate wire seat arranged between a movable wire clamping part and a fixed wire clamping part of each pair of wire clamping parts, each bending assembly is used to bend the section of wire located between the movable wire clamping part and the intermediate wire seat, and each wire cutting assembly is used to cut the section of wire that has been bent and is located between the movable wire clamping part and the intermediate wire seat.

7. The double PIN socket welding assembly equipment of the ultrasonic sensor as claimed in claim 5, characterized in that: Each of the bending assemblies comprises a rotary electric cylinder, a bending sleeve and a rotary electric cylinder translation mechanism; The bending sleeve is connected to the rotating electric cylinder, and a pair of convex columns are provided on the top of the bending sleeve, and the gap between the pair of convex columns is used to accommodate the wire; the rotating electric cylinder is used to drive the bending sleeve to rotate from the initial position to the bending position, when the bending sleeve is in the initial position, the pair of convex columns are arranged horizontally side by side, and when the bending sleeve is in the bending position, the pair of convex columns are arranged up and down; The rotary electric cylinder translation mechanism is used to drive the rotary electric cylinder to translate so as to approach or move away from the wire to be bent.

8. The double PIN socket welding assembly equipment of the ultrasonic sensor as claimed in claim 5, characterized in that: Each of the wire cutting assemblies comprises a pneumatic scissors and a lifting cylinder for driving the pneumatic scissors to rise and fall, and each of the movable wire clamping parts and each of the fixed wire clamping parts are pneumatic clamps.

9. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 5, characterized in that: The transport sub-mechanism includes a pneumatic clamp, a clamp lifting mechanism and a clamp translation mechanism; the clamp lifting mechanism is connected to a pair of pneumatic clamps and is used to drive the pneumatic clamps to rise or fall; the clamp translation mechanism is connected to the clamp lifting mechanism and is used to drive the clamp lifting mechanism to translate.

10. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 1, characterized in that: The welding mechanism comprises a resistance welding machine, a frame and a frame translation mechanism; the resistance welding machine is arranged on the frame, the frame is horizontally movably arranged beside the turntable, and the frame translation mechanism is used to drive the frame to translate to approach or move away from the turntable.

11. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 1, characterized in that: The assembly mechanism includes a workbench, a tooling base, a double PIN seat transport mechanism and a wire correction mechanism; The workbench is arranged beside the turntable, the tooling base is arranged on the workbench, and the tooling base is used to carry the ultrasonic sensor housing; The double PIN seat transport mechanism is used to change the double PIN seat after the wire is welded from horizontal to vertical placement and then transport it to the wire correction mechanism, and put the double PIN seat after the wire correction into the ultrasonic sensor housing; The wire correction mechanism is used to bend the wire connected to the negative electrode of the piezoelectric ceramic sheet of the ultrasonic sensor to a predetermined position.

12. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 11, characterized in that: The assembly mechanism includes a second distance measuring sensor, which is arranged on the side of the tooling base to detect the distance between the second distance measuring sensor and the ultrasonic sensor housing placed in the tooling base, compare the distance measurement result with a preset distance range, and send the comparison result to the electrical control device.

13. The double PIN socket welding assembly equipment of the ultrasonic sensor according to claim 11, characterized in that: The wire correction mechanism includes a movable clamping plate, a fixed seat, a pivot shaft, a second torsion spring and a bending cylinder, wherein the fixed seat is vertically arranged, the middle part of the movable clamping plate is pivotally connected to the fixed seat through the pivot shaft, and the second torsion spring is sleeved outside the pivot shaft and applies an elastic force to the movable clamping plate to make the top of the movable clamping plate away from the fixed seat; The push rod of the bending cylinder is connected to the bottom of the movable splint to drive the top of the movable splint to move closer to or away from the fixed seat, so that the wire connected to the negative electrode of the piezoelectric ceramic piece of the ultrasonic sensor is pressed by the movable splint against the surface of the fixed seat or can be removed from between the top of the movable splint and the fixed seat.

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