Double-station device for screwing washing machine door
By designing a dual-station device and a material distribution assembly, combined with a feeding belt and a pneumatic screwdriver, the problem of low efficiency in single-station automated operation was solved, and efficient and fully automated installation of washing machine door screws was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 荆州市亿卓实业股份有限公司
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-08
AI Technical Summary
In the current process of installing washing machine door screws, the efficiency of single-station automated operation is low, and there is a problem of missing screws.
Design a dual-station device that combines a feeding belt and a material distribution assembly. Through the cooperation of incomplete gears and racks, it can realize the uninterrupted feeding, pushing and screwing operations of workpieces. Combined with cylinders and pneumatic screwdrivers, it can achieve fully automated operation.
It significantly improves the efficiency of washing machine door screw installation, realizes fully automated and continuous operation, and avoids the phenomenon of missing screws.
Smart Images

Figure CN224209455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of washing machine door related devices, and in particular to a dual-station device for screws on washing machine doors. Background Technology
[0002] The washing machine door consists of an outer ring and an inner ring. After the outer ring and the inner ring are engaged, 13 more screws are needed to securely assemble them. In the past, when this work was done manually, the efficiency was low and it was easy to miss screws. Later, it was replaced by an automated pneumatic screw-driving operation. However, the single-station tooling still requires sequential loading and unloading, and there is still room for improvement in operating efficiency. Therefore, a dual-station device is needed to improve efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a dual-station device for screws on washing machine doors, which has the effect of high efficiency in dual-station operation.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A workbench is included, with two adjacent support seats 1 on one side of the workbench. A portal plate is vertically fixed on the workbench with the two support seats 1 located away from each other. A pneumatic screwdriver is provided on the bottom surface of the horizontal plate of the portal plate, located above the support seats 1. A feeding mechanism is provided on the other side of the workbench. The feeding mechanism includes a feeding belt located between the two support seats 1 and perpendicular to the support seats 1. A material distribution assembly is provided on the workbench between the support seats 1 and the feeding belt. The material distribution assembly includes a sliding plate 1. Three support seats 2 are spaced apart on the sliding plate 1. The spacing between adjacent support seats 2 is the same as the distance between support seats 1. After sliding, the support seats 2 can be fitted and connected to the support seats 1.
[0005] A further feature of this invention is that: a rack is fixed to the bottom of the sliding plate, and straight teeth are provided on both sides of the rack. The rack is slidably connected to a groove, which is located on the upper surface of the support plate. Three gears are also provided in the bottom surface of the support plate. The three gears mesh adjacently. Two gears on both sides are coaxially fixed with incomplete gears, and the two incomplete gears mesh with the straight teeth on both sides of the rack.
[0006] A further feature of this invention is that the incomplete gear two is semi-circular, and the toothed portion of the incomplete gear two includes two spaced teeth, the central angle corresponding to the arc length formed by the teeth is 45°.
[0007] A further feature of this invention is that the first support base and the second support base are U-shaped, and a slider is slidably connected to the vertical plates of the first support base and the second support base. A through groove is provided in the slider, and a push plate slides and moves up and down in the through groove.
[0008] A further feature of this invention is that: a parallel lead screw and a slide rod are provided on the horizontal plate of the door-shaped plate; a sliding plate is slidably connected to the lead screw and the slide rod; a cylinder is fixed on the sliding plate; a supporting circular plate is connected to the bottom surface of the cylinder; and a plurality of pneumatic screwdrivers are evenly spaced around the periphery of the supporting circular plate.
[0009] A further feature of this invention is that: a sliding groove 2 is provided in one side vertical plate of the support base 1 and the support base 2, a lead screw 2 is provided in the sliding groove 2, and one end of the slider is located in the sliding groove 2 and slidably connected to the lead screw 2.
[0010] A further feature of this invention is that baffles perpendicular to the platform are attached to both sides of the feed belt.
[0011] A further feature of this invention is that a cylinder is also provided on the slider, and the piston rod end of the cylinder is connected to the push plate.
[0012] A further feature of this invention is that the end of the lead screw is coaxially and fixedly connected to the output shaft of the motor.
[0013] A further feature of this invention is that the lead screw two is coaxially and fixedly connected to the output shaft of the motor two.
[0014] The beneficial effects of this utility model are:
[0015] 1. The feed belt is used to transport workpieces. In the initial state, the sliding plate 1 is located at the leftmost end, and the two support seats 2 at the right end correspond one-to-one with the two support seats 1. The incomplete gear 2 on one side rotates until its half-turn toothless part contacts the rack 1, and the half-turn toothed part of the incomplete gear 2 on the other side begins to contact the rack 1. As the gear 2 rotates, the rack 1 slides to the right in the slide groove 2, and the sliding plate 1 slides to the right. As the incomplete gear 1 rotates to 45°, the middle support seat 2 slides between the two support seats 1, and the middle support seat 2 is connected to the feed belt. As the incomplete gear 2 continues to rotate, during the rotation from 45° to 90°, due to the incomplete gear... At this point, the toothless part of the gear rotates to the side of the rack, so rack one stops. The workpiece on the feed belt is then conveyed to the middle support seat two; this is loading. As the incomplete gear two continues to rotate, from 90° to 135°, sliding plate one continues to slide to the right, and the middle support seat two slides to the right until it corresponds to and connects with the right-end support seat one. As the incomplete gear two continues to rotate, from 135° to 180°, because the toothless part of the incomplete gear two rotates to the side of the rack, rack one stops again. At this point, the workpiece on the middle support seat two can be pushed into the right-side support seat one; this is pushing. The incomplete gear two rotates... After reaching 180°, the half-circle spacer tooth of the other incomplete gear two begins to contact rack one. Since the two incomplete gears two rotate in the same direction, when the other incomplete gear two rotates from 0° to 45°, rack one slides to the left, and the middle support seat one engages with the feed belt; from 45° to 90°, rack one stops, and the middle support seat two can be loaded; from 90° to 135°, rack one slides to the left, driving the two support seats two on the right end to engage with the two support seats one; from 135° to 180°, rack one remains stationary, and during this period, the workpiece on the rightmost support seat one can be pushed into the rightmost support seat two after the screw is tightened. The workpiece can be fed into the external collection device through support seat 2. The workpiece that has just been loaded into support seat 2 in the middle can be loaded into support seat 1 on the left. The two support seats 2 on the right end are connected to support seats 1 one by one, returning to the initial state. This cycle repeats continuously, realizing uninterrupted feeding, pushing in, screwing, and pushing out. The dual-station design combined with the design of the material distribution component enables efficient screwing, full automation, and significantly improved efficiency. In addition, when the middle support seat 2 is connected to support seat 1 on the right end, support seat 1 on the left end is connected to support seat 2, and the workpiece in support seat 1 on the left end can be pushed out into support seat 2, and then fed into the external collection device.
[0016] 2. Cylinder 1 pushes the push plate to rise and fall within the slider. When the push plate descends, it does not affect the workpiece entering the support seat 1 and support seat 2. At the same time, the slider drives the push plate to slide within the support seat 1 and support seat 2. When the push plate rises, it slides and fits against the working end face, which can push the workpiece into the support seat 1, support seat 2 and external collection device, ensuring the continuity of the whole process.
[0017] 3. The support round plate can slide on the gantry plate and corresponds to the two support seats. When the workpiece is pushed into the support seat, the lead screw rotates and pushes the sliding plate to slide above the support seat. The cylinder drives the support round plate, i.e., the pneumatic screwdriver, to screw the workpiece. The one-to-one cooperation significantly saves the entire working time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of this utility model.
[0020] Figure 2 yes Figure 1 A structural diagram of the other side.
[0021] Figure 3 This is a schematic diagram of the material distribution component in this utility model.
[0022] Figure 4 yes Figure 3 A schematic diagram of the structure from another side.
[0023] In the diagram, 1. Workbench; 2. Support base one; 3. Gate-shaped plate; 4. Pneumatic screwdriver; 5. Feed belt; 6. Material distribution assembly; 61. Slide groove one; 62. Sliding plate one; 63. Support base two; 64. Rack one; 65. Support plate; 66. Gear one; 67. Gear two; 7. Slider; 8. Push plate; 9. Cylinder one; 10. Lead screw one; 11. Slide rod one; 12. Sliding plate two; 13. Baffle; 14. Support circular plate; 15. Cylinder two; 16. Lead screw two; 17. Slide groove two. Detailed Implementation
[0024] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0025] An example is a dual-station device for screws on washing machine doors, such as... Figure 1-4As shown, the device includes a workbench. Two adjacent support seats are positioned on one side of the workbench. A portal-shaped plate is vertically fixed to the workbench on the side of the two support seats. A pneumatic screwdriver is mounted on the bottom surface of the portal-shaped plate above the support seats. A feeding mechanism is located on the other side of the workbench. The feeding mechanism includes a feed belt positioned between the two support seats and perpendicular to them. A material distribution assembly is located on the workbench between the support seats and the feed belt. The material distribution assembly includes a sliding plate. Three support seats are spaced apart on the sliding plate, with the spacing between adjacent support seats being the same as the distance between support seats. The support seats can slide and connect with the support seats. A rack is fixed to the bottom of the sliding plate, with straight teeth on both opposite sides. The sliding plate is connected to the slide groove 1, which is located on the upper surface of the support plate. Three gears 1 are also installed on the bottom surface of the support plate, meshing adjacently. Two gears on each side are coaxially fixed with incomplete gears 2. Each of the two incomplete gears 2 meshes with the straight teeth on both sides of the rack 1. The incomplete gears 2 are semi-circular, with the toothed portion consisting of two spaced teeth. The central angle corresponding to the arc length formed by the teeth is 45°. A feed belt is used to transport the workpiece. Initially, the sliding plate 1 is located at the leftmost end, and the two support seats 2 on the right end correspond one-to-one with the two support seats 1. One side of the incomplete gear 2 rotates until its half-turn toothless portion contacts the rack 1, while the other side of the incomplete gear 2's half-turn toothed portion begins to contact the rack 1. As... As the second gear rotates, the first rack slides to the right in the second slide groove, and the first sliding plate slides to the right. As the incomplete gear rotates to 45°, the second intermediate support slides between the two first supports, and the second intermediate support is connected to the feed belt. As the second incomplete gear continues to rotate, from 45° to 90°, the toothless portion of the second incomplete gear rotates to the side of the second rack, causing the first rack to stop. At this time, the workpiece on the feed belt is conveyed to the second intermediate support; this is the loading process. As the second incomplete gear continues to rotate, from 90° to 135°, the first sliding plate continues to slide to the right, and the second intermediate support slides to the right until it corresponds to and connects with the first support on the right end. As the second incomplete gear continues to rotate, from 135°... During the rotation from 0° to 180°, since the toothless part of the incomplete gear 2 rotates to the side of the rack 2, the rack 1 stops again. At this time, the workpiece on the middle support seat 2 can be pushed into the right support seat 1. This is called pushing. After the incomplete gear 2 rotates to 180°, the half-circle spacer tooth of the other incomplete gear 2 begins to contact the rack 1. Since the two incomplete gears 2 rotate in the same direction, when the incomplete gear 2 on the other side rotates from 0° to 45°, the rack 1 slides to the left, and the middle support seat 1 is in contact with the feed belt. During the period from 45° to 90°, the rack 1 stops, and the middle support seat 2 can be loaded. During the period from 90° to 135°, the rack 1 slides to the left, driving the two support seats 2 on the right end to be in contact with the two support seats 1 one by one.Between 135° and 180°, rack one remains stationary. During this period, the workpiece on the rightmost support seat one can be pushed into the rightmost support seat two after being screwed in. It can then be unloaded into the external collection device via support seat two. The workpiece just loaded into support seat two in the middle can be loaded into support seat one on the left. The two support seats two on the right end then connect with the two support seats one, returning to the initial state. This cycle repeats continuously, achieving uninterrupted loading, pushing in, screwing in, and pushing out. The dual-station design, combined with the material distribution component, achieves efficient screwing, full automation, and significantly improved efficiency. Furthermore, when the middle support seat two connects with the rightmost support seat one, the leftmost support seat one connects with support seat two, allowing the workpiece in the leftmost support seat one to be pushed out into support seat two, and then unloaded into the external collection device.
[0026] like Figure 1-4 As shown, support base one and support base two are U-shaped. Slider blocks are slidably connected to the vertical plates of support base one and support base two. A through groove is provided in the slider, and a push plate slides and rises and falls in the through groove. Cylinder one is also provided on the slider. The piston rod end of cylinder one is connected to the push plate. A sliding groove two is provided in one side vertical plate of support base one and support base two. A lead screw two is provided in the sliding groove two. One end of slider one is located in the sliding groove two and is slidably connected to the lead screw two. Cylinder one pushes the push plate to rise and fall in the slider. When the push plate falls, it does not affect the workpiece entering support base one and support base two. At the same time, the slider drives the push plate to slide in support base one and support base two. When the push plate rises, the push plate slides and fits against the working end face, which can push the workpiece into support base one, support base two and external collection device, ensuring the continuity of the whole process.
[0027] like Figure 1-4 As shown, a parallel lead screw and a slide rod are installed on the horizontal plate of the portal frame. A sliding plate is slidably connected to the lead screw and slide rod. A cylinder is fixed on the sliding plate. A support circular plate is connected to the bottom of the cylinder. Several pneumatic screwdrivers are evenly spaced around the periphery of the support circular plate. The support circular plate can slide on the portal frame and is positioned above two support seats. When a workpiece is pushed into the support seat, the lead screw rotates and pushes the sliding plate to slide above the support seat. The cylinder drives the support circular plate, i.e., the pneumatic screwdriver, to screw the workpiece. This coordinated operation significantly saves the overall working time.
[0028] like Figure 1-4 As shown, baffles perpendicular to the platform are attached to both sides of the feed belt.
[0029] like Figure 1-4 As shown, the end of lead screw one is coaxially and fixedly connected to the output shaft of motor one, and lead screw two is coaxially and fixedly connected to the output shaft of motor two.
[0030] Working principle of a dual-station device for screws on washing machine doors:
[0031] The feed belt is used to transport the workpiece. Initially, the sliding plate 1 is located at the leftmost end, and the two support seats 2 at the right end correspond one-to-one with the two support seats 1. One side of the incomplete gear 2 rotates until its half-turn toothless portion contacts the rack 1, while the other side of the incomplete gear 2's half-turn toothed portion begins to contact the rack 1. As the gear 2 rotates, the rack 1 slides to the right in the slide groove 2, and the sliding plate 1 slides to the right. As the incomplete gear 1 rotates to 45°, the middle support seat 2 slides between the two support seats 1, and the middle support seat 2 is connected to the feed belt. As the incomplete gear 2 continues to rotate, during the rotation from 45° to 90°, due to the incomplete gear 2... When the toothless part of the gear rotates to the side of the rack, rack one stops. At this time, the workpiece on the feed belt is conveyed to the middle support seat two; this is loading. As the incomplete gear two continues to rotate, from 90° to 135°, sliding plate one continues to slide to the right, and the middle support seat two slides to the right until it corresponds to and connects with the right support seat one. As the incomplete gear two continues to rotate, from 135° to 180°, because the toothless part of the incomplete gear two rotates to the side of the rack, rack one stops again. At this time, the workpiece on the middle support seat two can be pushed into the right support seat one; this is pushing. The incomplete gear two rotates to... After 180°, the half-circle spacer tooth of the other incomplete gear two begins to contact rack one. Since the two incomplete gears two rotate in the same direction, when the other incomplete gear two rotates from 0° to 45°, rack one slides to the left, and the middle support seat one engages with the feed belt; from 45° to 90°, rack one stops, and the middle support seat two can be loaded; from 90° to 135°, rack one slides to the left, driving the two support seats two on the right end to engage with the two support seats one; from 135° to 180°, rack one remains stationary, and during this period, the workpiece on the rightmost support seat one can be pushed into the rightmost support seat two after the screw is tightened. Support seat 2 can be fed into the external collection device. The workpiece in support seat 2, which has just been loaded in the middle, can be fed into support seat 1 on the left. The two support seats 2 on the right end are connected to support seats 1 one by one, returning to the initial state. This cycle repeats continuously, enabling uninterrupted feeding, pushing in, screwing, and pushing out. The dual-station design, combined with the design of the material distribution component, achieves efficient screwing, full automation, and significantly improves efficiency. In addition, when support seat 2 in the middle is connected to support seat 1 on the right end, support seat 1 on the left end is connected to support seat 2, allowing the workpiece in support seat 1 on the left to be pushed out into support seat 2, and then fed into the external collection device.
[0032] The support circular plate can slide on the gantry plate, corresponding to the two support seats. When the workpiece is pushed into the support seat, the lead screw rotates and pushes the sliding plate to slide above the support seat. The cylinder drives the support circular plate, i.e., the pneumatic screwdriver, to screw the workpiece. The one-to-one cooperation significantly saves the entire working time.
Claims
1. A dual-station device for screws on washing machine doors, characterized in that: The device includes a workbench. Two adjacent support seats are located on one side of the workbench. A portal plate is vertically fixed to the workbench on the side of the two support seats. A pneumatic screwdriver is located above the support seats on the bottom surface of the portal plate. A feeding mechanism is located on the other side of the workbench. The feeding mechanism includes a feed belt located between the two support seats and perpendicular to them. A material distribution assembly is located on the workbench between the support seats and the feed belt. The material distribution assembly includes a sliding plate. Three support seats are spaced apart on the sliding plate. The spacing between adjacent support seats is the same as the distance between support seats. After sliding, the support seats can be fitted and connected to the support seats.
2. The dual-station device for screws on washing machine doors according to claim 1, characterized in that: A rack is fixed to the bottom of the sliding plate. The rack has straight teeth on both sides. The rack is slidably connected to a groove. The groove is located on the upper surface of the support plate. Three gears are also provided in the bottom surface of the support plate. The three gears mesh with each other. Two gears on both sides are coaxially fixed with incomplete gears. The two incomplete gears mesh with the straight teeth on both sides of the rack.
3. A dual-station device for screws on washing machine doors according to claim 2, characterized in that: The incomplete gear two is semi-circular, and the toothed part of the incomplete gear two includes two spaced teeth, the central angle corresponding to the arc length formed by the teeth is 45°.
4. A dual-station device for screws on washing machine doors according to claim 3, characterized in that: The first support base and the second support base are U-shaped. A slider is slidably connected to the vertical plate of the first support base and the second support base. A through groove is provided in the slider, and a push plate slides and moves up and down in the through groove.
5. A dual-station device for screws on washing machine doors according to claim 4, characterized in that: The horizontal plate of the gate-shaped plate is provided with a parallel lead screw and a slide rod. A sliding plate is slidably connected to the lead screw and the slide rod. A cylinder is fixed on the sliding plate. A supporting circular plate is connected to the bottom surface of the cylinder. Several pneumatic screwdrivers are evenly spaced around the periphery of the supporting circular plate.
6. A dual-station device for screws on washing machine doors according to claim 5, characterized in that: The vertical plate on one side of the support base one and support base two has a sliding groove two, and a lead screw two is provided in the sliding groove two. One end of the slider is located in the sliding groove two and is slidably connected to the lead screw two.
7. A dual-station device for screws on washing machine doors according to claim 6, characterized in that: The feed belt has baffles that are perpendicular to the platform attached to both sides.
8. A dual-station device for screws on washing machine doors according to claim 7, characterized in that: The slider is also equipped with a cylinder, and the piston rod end of the cylinder is connected to the push plate.
9. A dual-station device for screws on washing machine doors according to claim 8, characterized in that: The end of the lead screw is coaxially and fixedly connected to the output shaft of the motor.
10. A dual-station device for screws on a washing machine door according to claim 9, characterized in that: The lead screw two is coaxially and fixedly connected to the output shaft of the motor two.