Electromagnetic valve coil terminal welding device

Abstract

The utility model discloses an electromagnetic valve coil terminal welding device which comprises a front electrode, a rear electrode, a bottom plate, a support, a front electrode lifting assembly, a rear electrode moving assembly, a workpiece seat and a workpiece seat moving assembly. The plurality of workpiece seats are transversely and movably arranged on the bottom plate through workpiece seat moving assemblies respectively, the plurality of workpieces are correspondingly arranged on the plurality of workpiece seats respectively, and an enameled wire is wound in a metal terminal of each workpiece; the support is vertically installed on the bottom plate, and the front electrode is arranged on the support in a lifting mode through the front electrode lifting assembly, so that the front electrode can make contact with a metal terminal of one workpiece. The pair of rear electrodes can be longitudinally and movably installed on the bottom plate through the pair of rear electrode moving assemblies, so that the rear electrodes can abut against the metal terminals of the workpiece. The utility model relates to the technical field of welding equipment, and can solve the problems that a tin immersion welding mode in the prior art is unreliable in welding and not environment-friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a solenoid valve coil terminal welding device. Background Art

[0002] The enameled wire on the traditional solenoid valve coil terminal and the metal terminal are welded by tin immersion, which is similar to the way an electric soldering iron melts the solder wire. The high-temperature solder wire melts the surface insulation layer of the enameled wire, and then the enameled wire and the metal sheet are bonded together. For example: Chinese utility model CN219254412U discloses a wiring harness assembly welding device, which adopts the traditional tin immersion welding method. The welding part is easily affected by high temperature, vibration, etc., which is not only unreliable, but also easy to crack and fall off, and is not environmentally friendly, and the cost is also high. Therefore, it is necessary to provide a solenoid valve coil terminal welding device that can solve the problems of unreliable and environmentally unfriendly tin immersion welding in the prior art. Summary of the invention

[0003] The utility model aims to provide a solenoid valve coil terminal welding device, which can solve the problems of unreliable and environmentally unfriendly tin immersion welding in the prior art.

[0004] The utility model is achieved in this way:

[0005] A solenoid valve coil terminal welding device comprises a front electrode, a rear electrode, a base plate, a bracket, a front electrode lifting assembly, a rear electrode moving assembly, a workpiece seat and a workpiece seat moving assembly; a plurality of workpiece seats are respectively arranged on the base plate in a transversely movable manner through the workpiece seat moving assembly, a plurality of workpieces are respectively placed on the plurality of workpiece seats, and an enameled wire is wound inside the metal terminal of each workpiece; the bracket is vertically mounted on the base plate, and the front electrode is liftably mounted on the bracket through the front electrode lifting assembly so that the front electrode can contact the metal terminal of one of the workpieces; a pair of rear electrodes are respectively arranged on the base plate in a longitudinally movable manner through a pair of rear electrode moving assemblies so that the rear electrodes can be pressed against the metal terminal of the workpiece.

[0006] The front electrode lifting assembly includes an upper cylinder, an upper slide rail, an upper slider and a front electrode mounting block; the upper cylinder is mounted on the top of the bracket through a mounting plate, and the output end of the upper cylinder is connected to the upper slider; the upper slide rail is vertically arranged on the mounting plate, and the upper slider can be vertically slidably embedded on the upper slide rail; the front electrode mounting block is arranged at the bottom of the upper slider, and the front electrode is detachably mounted on the front electrode mounting block through a front electrode cover plate, and the front electrode mounting block is externally connected to the positive pole of the welding power supply.

[0007] A cooling water through hole is formed in the front electrode mounting block, and front electrode quick connectors are installed at both ends of the cooling water through hole. The front electrode quick connectors are externally connected to a cooling water pipe.

[0008] A floating joint is arranged between the output end of the upper cylinder and the upper sliding block.

[0009] Each group of the rear electrode moving components includes a rear cylinder, a pressure sensor and a rear electrode mounting block; the rear cylinder is arranged on a base plate, the output end of the rear cylinder is connected to the pressure sensor, and the rear electrode mounting block is mounted on the pressure sensor; the rear electrode is detachably mounted on the rear electrode mounting block through a rear electrode cover plate, and the rear electrode mounting block is externally connected to the negative pole of a welding power supply.

[0010] A cooling water through hole is formed in the rear electrode mounting block, and rear electrode quick connectors are installed at both ends of the cooling water through hole. The rear electrode quick connectors are externally connected to a cooling water pipe.

[0011] The workpiece seat moving assembly includes a servo motor, a lead screw, a moving seat and a limit mounting seat; the U-shaped limit mounting seat is installed on the base plate, and the two ends of the lead screw are rotatably mounted on the two side plates of the limit mounting seat; the servo motor is installed on one of the side plates of the limit mounting seat, and the output shaft of the servo motor passes through the side plate and is coaxially fixed to one end of the lead screw; the moving seat is threadedly screwed on the lead screw, and a number of workpiece seats are respectively arranged on the moving seat.

[0012] Two position sensors are arranged on the bottom plate of the position-limiting mounting seat at intervals, and the two position sensors are arranged facing the moving seat.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a front electrode and a rear electrode, the front electrode is mounted on the front electrode mounting block, the rear electrode is mounted on the rear electrode mounting block, the front electrode mounting block and the rear electrode mounting block are externally connected to a high-frequency precision inverter welding power supply, and outputs a DC high-frequency large current (low voltage) to the front electrode and the rear electrode, thereby melting the enameled wire and the metal terminal into one, realizing welding, which is more environmentally friendly and energy-saving than the traditional tinning welding method, and the welding result is reliable.

[0015] 2. The utility model is provided with a front electrode cover mounting block and a rear electrode cover mounting block, and the front electrode cover plate and the rear electrode cover plate make the disassembly, assembly and replacement of the front electrode and the rear electrode more convenient. At the same time, by providing cooling water through holes in the front electrode cover mounting block and the rear electrode cover mounting block, the heat in the front electrode cover mounting block and the rear electrode cover mounting block can be quickly taken away by cooling water, thereby cooling the front electrode and the rear electrode, thereby extending the service life of the front electrode and the rear electrode while ensuring the welding quality.

[0016] 3. The utility model is provided with a workpiece seat and a workpiece seat moving assembly, and the metal terminals required for welding on the workpiece on the workpiece seat are accurately moved to the welding position through the rotation control of the lead screw by the servo motor and the threaded transmission between the lead screw and the moving seat, thereby ensuring the welding effect, facilitating the automatic control of the welding process, and improving the welding efficiency and the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front perspective view of the solenoid valve coil terminal welding device of the utility model;

[0018] Figure 2 It is a rear perspective view of the solenoid valve coil terminal welding device of the utility model;

[0019] Figure 3 It is a partial enlarged view of the solenoid valve coil terminal welding device of the utility model.

[0020] In the figure, 1 is the front electrode, 2 is the rear electrode, 3 is the bottom plate, 4 is the bracket, 5 is the workpiece seat, 6 is the workpiece, 601 is the metal terminal, 701 is the upper cylinder, 702 is the upper slide rail, 703 is the upper slider, 704 is the front electrode mounting block, 705 is the mounting plate, 706 is the front electrode cover plate, 707 is the front electrode quick connector, 708 is the floating connector, 801 is the rear cylinder, 802 is the pressure sensor, 803 is the rear electrode mounting block, 804 is the rear electrode cover plate, 805 is the rear electrode quick connector, 901 is the servo motor, 902 is the lead screw, 903 is the moving seat, 904 is the limit mounting seat, and 905 is the position sensor. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Please see attached Figure 1 To Attachment Figure 3 A solenoid valve coil terminal welding device comprises a front electrode 1, a rear electrode 2, a bottom plate 3, a bracket 4, a front electrode lifting assembly, a rear electrode moving assembly, a workpiece seat 5 and a workpiece seat moving assembly; a plurality of workpiece seats 5 are respectively arranged on the bottom plate 3 in a transversely movable manner through the workpiece seat moving assembly, a plurality of workpieces 6 are respectively placed on the plurality of workpiece seats 5, and a metal terminal 601 of each workpiece 6 is wound with enameled wire; the bracket 4 is vertically mounted on the bottom plate 3, and the front electrode 1 is lifted and arranged on the bracket 4 through the front electrode lifting assembly, so that the front electrode 1 can contact with the metal terminal 601 of one of the workpieces 6; a pair of rear electrodes 2 are respectively arranged on the bottom plate 3 in a longitudinally movable manner through a pair of rear electrode moving assemblies, so that the rear electrode 2 can be pressed against the metal terminal 601 of the workpiece 6.

[0023] Preferably, a high-frequency precision inverter welding power supply can be used to output a high-frequency DC large current (low voltage). The front electrode 1 and the rear electrode 2 contact and discharge with the metal terminal 601. The current passes through the metal terminal 601 to heat the metal terminal 601 and melt the insulating layer of the enameled wire. Then the current is conducted from the enameled wire body to melt the enameled wire and the metal terminal 601 into one, thereby achieving welding. Compared with the traditional tin immersion welding method, it is more energy-saving and environmentally friendly, and can ensure that the welding result is firm and reliable.

[0024] By placing a plurality of workpieces 6 on a plurality of workpiece seats 5, and driving the plurality of workpiece seats 5 to move by the workpiece seat moving assembly, the plurality of workpieces 6 can be welded sequentially by the front electrode 1 and the rear electrode 2, thereby improving the welding efficiency. At the same time, since the solenoid valve coil is usually provided with two left and right metal terminals 601, by providing a pair of rear electrodes 2 and a pair of rear electrode moving assemblies, the left and right metal terminals 601 can be welded sequentially by the pair of rear electrodes 2, thereby ensuring reliable welding and improving the welding efficiency.

[0025] Please see attached Figure 1 The front electrode lifting assembly includes an upper cylinder 701, an upper slide rail 702, an upper slider 703 and a front electrode mounting block 704; the upper cylinder 701 is mounted on the top of the bracket 4 through a mounting plate 705, and the output end of the upper cylinder 701 is connected to the upper slider 703; the upper slide rail 702 is vertically arranged on the mounting plate 705, and the upper slider 703 can be vertically slidably embedded on the upper slide rail 702; the front electrode mounting block 704 is arranged at the bottom of the upper slider 703, and the front electrode 1 is detachably mounted on the front electrode mounting block 704 through a front electrode cover plate 706, and the front electrode mounting block 704 is externally connected to the positive pole of the welding power supply.

[0026] Preferably, a stroke nut and a locking nut can be set on the top of the upper cylinder 701. The extension range of the upper cylinder 701 can be controlled by rotating the stroke nut, and then locked by the locking nut, so as to accurately control the sliding and lifting range of the upper slider 703 on the upper slide rail 702, and then accurately control the front electrode 1 to descend to the welding position, thereby ensuring reliable and accurate welding.

[0027] The upper slide rail 702 is provided to provide guidance and limit for the upper slider 703, thereby ensuring the linearity and stability of the lifting of the front electrode 1. The front electrode mounting block 704 is used to connect the positive electrode of the high-frequency precision inverter welding power supply to the positive electrode of the high-frequency precision inverter welding power supply, so that the front electrode 1 is connected to the positive electrode of the high-frequency precision inverter welding power supply.

[0028] The front electrode cover plate 706 is mounted on the front electrode mounting block 704 by means of bolts, and the front electrode 1 is locked on the front electrode mounting block 704 , so as to facilitate the disassembly, assembly and replacement of the front electrode 1 .

[0029] Please see attached Figure 1 and attached Figure 3 A cooling water through hole (not shown in the figure) is formed in the front electrode mounting block 704, and front electrode quick connectors 707 are installed at both ends of the cooling water through hole, and the front electrode quick connector 707 is externally connected to a cooling water pipe.

[0030] Cooling water is circulated through the cooling water pipe. When the cooling water flows through the cooling water through hole, it takes away the heat in the front electrode mounting block 704, thereby cooling the front electrode 1, ensuring the stable and safe operation of the front electrode 1, ensuring the welding effect and extending the service life of the front electrode 1.

[0031] Please see attached Figure 1 A floating joint 708 is provided between the output end of the upper cylinder 701 and the upper slider 703.

[0032] The floating joint 708 can provide a certain floating space for the upper slider 703 to further ensure the lifting stability of the front electrode 1 and avoid collision and extrusion between the front electrode 1 and the workpiece 6.

[0033] Please see attached Figure 1 and attached Figure 2 Each group of the rear electrode moving components includes a rear cylinder 801, a pressure sensor 802 and a rear electrode mounting block 803; the rear cylinder 801 is arranged on the base plate 3, the output end of the rear cylinder 801 is connected to the pressure sensor 802, and the rear electrode mounting block 803 is installed on the pressure sensor 802; the rear electrode 2 is detachably mounted on the rear electrode mounting block 803 through the rear electrode cover plate 804, and the rear electrode mounting block 803 is externally connected to the negative pole of the welding power supply.

[0034] Preferably, a stroke nut and a locking nut can be provided at the rear of the rear cylinder 801. The extension range of the rear cylinder 801 can be controlled by rotating the stroke nut, and then locked by the locking nut, so as to accurately control the longitudinal movement range of the pressure sensor 802 and the rear electrode mounting block 803, and then accurately control the movement of the rear electrode 1 to the welding position, thereby ensuring reliable and accurate welding.

[0035] The rear electrode cover plate 804 is mounted on the rear electrode mounting block 803 by means of bolts, and the rear electrode 2 is locked on the rear electrode mounting block 803 , so as to facilitate the disassembly, assembly and replacement of the rear electrode 2 .

[0036] Preferably, the pressure sensor 802 can adopt the pressure sensing component and pressure following component of the existing technology. After the rear electrode 2 contacts the metal terminal 601, a reaction force is generated on the pressure sensor 802, so that the pressure change of the rear electrode 2 when contacting and abutting the metal terminal 601 can be monitored in real time through the pressure sensing component and the pressure following component, so that the pressure can be accurately controlled within the welding pressure range, and the stability of the welding pressure can be guaranteed during the welding process.

[0037] Please see attached Figure 1 and attached Figure 3 A cooling water through hole (not shown in the figure) is formed in the rear electrode mounting block 803, and rear electrode quick connectors 805 are installed at both ends of the cooling water through hole, and the rear electrode quick connectors 805 are externally connected to a cooling water pipe.

[0038] Cooling water is circulated through the cooling water pipe. When the cooling water flows through the cooling water through hole, it takes away the heat in the rear electrode mounting block 803, thereby cooling the rear electrode 2, ensuring the stable and safe operation of the rear electrode 2, ensuring the welding effect and extending the service life of the rear electrode 2.

[0039] Please see attached Figure 1 The workpiece seat moving assembly includes a servo motor 901, a lead screw 902, a moving seat 903 and a limit mounting seat 904; the U-shaped limit mounting seat 904 is installed on the base plate 3, and the two ends of the lead screw 902 are rotatably mounted on the two side plates of the limit mounting seat 904 through rotating bearings; the servo motor 901 is installed on one of the side plates of the limit mounting seat 904, and the output shaft of the servo motor 901 passes through the side plate and is coaxially fixed to one end of the lead screw 902; the moving seat 903 is threadedly screwed on the lead screw 902, and a plurality of workpiece seats 5 are respectively arranged on the moving seat 903.

[0040] Preferably, the movable seat 903 can adopt a rectangular parallelepiped structure, and the bottom of the movable seat 903 can be slidably connected to the bottom plate of the limit mounting seat 904 through a slider and a slide rail, thereby limiting the rotation of the movable seat 903 and ensuring stable linear movement of the movable seat 903.

[0041] When the servo motor 901 is started, it can drive the screw 902 to rotate forward or reversely. Under the threaded transmission of the screw 902 and the moving seat 903, the rotation of the screw 902 is converted into a linear motion of the moving seat 903 along the axis of the screw 902, thereby driving the movement of the workpiece seat 5, and then accurately moving the workpiece 6 to the welding position.

[0042] The servo motor 901 has high control accuracy and is easy to be automatically controlled, which can improve the automation degree and welding efficiency of the welding operation.

[0043] Please see attached Figure 1 Two position sensors 905 are spaced apart on the bottom plate of the position limiting mounting seat 904 , and the two position sensors 905 are arranged facing the movable seat 903 .

[0044] Preferably, the position sensor 905 can be a contact sensor, an infrared sensor, etc., which can be used to sense the moving position of the moving seat 903, thereby determining the position of each workpiece seat 5, and then determining that the metal terminal 601 required to be welded on the workpiece 6 is located at the welding position. The number and setting position of the position sensor 905 can be adaptively adjusted according to actual positioning requirements.

[0045] Please see attached Figure 1 To Attachment Figure 3 , the welding process and working principle of the utility model are:

[0046] The front electrode mounting block 704 is connected to the positive electrode of the external welding power source, and the left and right rear electrode mounting blocks 803 are both connected to the negative electrode of the external welding power source. The two workpieces 6 are placed on the two workpiece seats 5 respectively.

[0047] After starting welding, the servo motor 901 drives the lead screw 902 to rotate, and under the transmission of the thread, the moving seat 903 is driven to move linearly along the axial direction of the lead screw 902, and the metal terminal 601 on the left side of the first workpiece 6 is moved to the welding position directly below the front electrode 1, and the servo motor 901 stops rotating.

[0048] The output end of the upper cylinder 701 pushes the upper slider 703 to slide downward along the upper slide rail 702, so that the front electrode 1 moves downward to contact the front end of the metal terminal 601 on the left side of the first workpiece 6, and the upper cylinder 701 stops moving.

[0049] The rear cylinder 801 on the left side pushes the pressure sensor 802 and the rear electrode mounting block 803 to move forward, so that the rear electrode 2 on the left side moves forward to abut against the rear end of the metal terminal 601 on the left side of the first workpiece 6, and the rear cylinder 801 on the left side stops moving. The contact pressure between the rear electrode 2 and the left metal terminal 601 can be detected by the pressure sensor 802, thereby controlling the welding pressure.

[0050] A high-frequency precision inverter welding power supply is used to output a high-frequency DC large current (low voltage). The front electrode 1 and the rear electrode 2 begin to discharge. The current passes through the metal terminal 601 to heat the metal terminal 601 and melt the insulating layer of the enameled wire. Then the current is conducted from the enameled wire body to melt the enameled wire and the metal terminal 601 into one, completing the welding of the metal terminal 601 on the left side of the workpiece 6.

[0051] The rear cylinder 801 on the left side moves in the reverse direction, driving the rear electrode 2 on the left side to move backward and separate from the metal terminal 601 .

[0052] The rear cylinder 801 on the right side pushes the pressure sensor 802 and the rear electrode mounting block 803 to move forward, so that the rear electrode 2 on the right side moves forward to abut against the rear end of the metal terminal 601 on the right side of the first workpiece 6, and the rear cylinder 801 on the right side stops moving. The contact pressure between the rear electrode 2 and the right metal terminal 601 can be detected by the pressure sensor 802, thereby controlling the welding pressure.

[0053] The metal terminal 601 on the right side is welded. The welding process of the metal terminal 601 on the right side is the same as that of the metal terminal 601 on the left side, which will not be repeated here.

[0054] The rear cylinder 801 on the right side moves in the reverse direction to drive the rear electrode 2 on the right side to move backward and disengage from the metal terminal 601. The servo motor 901 drives the lead screw 902 to rotate, moves the second workpiece 6 to the welding position, and then welds the metal terminal 601 of the second workpiece 6. The welding process of the metal terminal 601 of the second workpiece 6 is the same as that of the metal terminal 601 of the first workpiece 6, which will not be repeated here.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A solenoid valve coil terminal welding device, characterized in that: The invention comprises a front electrode (1), a rear electrode (2), a bottom plate (3), a bracket (4), a front electrode lifting assembly, a rear electrode moving assembly, a workpiece seat (5) and a workpiece seat moving assembly; a plurality of workpiece seats (5) are respectively arranged on the bottom plate (3) in a movably transverse manner through the workpiece seat moving assembly, a plurality of workpieces (6) are respectively arranged on the plurality of workpiece seats (5), and an enameled wire is wound inside a metal terminal (601) of each workpiece (6); the bracket (4) is vertically mounted on the bottom plate (3), and the front electrode (1) is arranged on the bracket (4) in a movably transverse manner through the front electrode lifting assembly, so that the front electrode (1) can contact the metal terminal (601) of one of the workpieces (6); a pair of rear electrodes (2) are respectively arranged on the bottom plate (3) in a movably longitudinal manner through a pair of rear electrode moving assemblies, so that the rear electrodes (2) can press against the metal terminal (601) of the workpiece (6).

2. The solenoid valve coil terminal welding device according to claim 1, characterized in that: The front electrode lifting assembly comprises an upper cylinder (701), an upper slide rail (702), an upper slider (703) and a front electrode mounting block (704); the upper cylinder (701) is mounted on the top of the bracket (4) via a mounting plate (705), and the output end of the upper cylinder (701) is connected to the upper slider (703); The upper slide rail (702) is vertically arranged on the mounting plate (705), and the upper slider (703) can be vertically slidably embedded in the upper slide rail (702); the front electrode mounting block (704) is arranged at the bottom of the upper slider (703), and the front electrode (1) is detachably mounted on the front electrode mounting block (704) through the front electrode cover plate (706), and the front electrode mounting block (704) is externally connected to the positive electrode of the welding power supply.

3. The solenoid valve coil terminal welding device according to claim 2, characterized in that: A cooling water through hole is formed in the front electrode mounting block (704), and front electrode quick connectors (707) are installed at both ends of the cooling water through hole. The front electrode quick connectors (707) are externally connected to a cooling water pipe.

4. The solenoid valve coil terminal welding device according to claim 2, characterized in that: A floating joint (708) is provided between the output end of the upper cylinder (701) and the upper slider (703).

5. The solenoid valve coil terminal welding device according to claim 1, characterized in that: Each group of the rear electrode moving components comprises a rear cylinder (801), a pressure sensor (802) and a rear electrode mounting block (803); the rear cylinder (801) is arranged on the bottom plate (3), the output end of the rear cylinder (801) is connected to the pressure sensor (802), and the rear electrode mounting block (803) is mounted on the pressure sensor (802); the rear electrode (2) is detachably mounted on the rear electrode mounting block (803) through the rear electrode cover plate (804), and the rear electrode mounting block (803) is externally connected to the negative pole of the welding power supply.

6. The solenoid valve coil terminal welding device according to claim 5, characterized in that: A cooling water through hole is formed in the rear electrode mounting block (803), and rear electrode quick connectors (805) are installed at both ends of the cooling water through hole. The rear electrode quick connectors (805) are externally connected to a cooling water pipe.

7. The solenoid valve coil terminal welding device according to claim 1, characterized in that: The workpiece seat moving assembly comprises a servo motor (901), a lead screw (902), a moving seat (903) and a limit mounting seat (904); the limit mounting seat (904) of a U-shaped structure is mounted on a bottom plate (3), and the two ends of the lead screw (902) are rotatably mounted on two side plates of the limit mounting seat (904); the servo motor (901) is mounted on one of the side plates of the limit mounting seat (904), and the output shaft of the servo motor (901) passes through the side plate and is coaxially fixedly connected to one end of the lead screw (902); the moving seat (903) is threadedly screwed on the lead screw (902), and a plurality of workpiece seats (5) are respectively arranged on the moving seat (903).

8. The solenoid valve coil terminal welding device according to claim 7, characterized in that: Two position sensors (905) are arranged at intervals on the bottom plate of the position-limiting mounting seat (904), and the two position sensors (905) are arranged facing the movable seat (903).

Images