Automatic bolt locking equipment for refrigerator hinge lining box

Abstract

The utility model discloses refrigerator hinge lining box bolt automatic locking equipment which comprises a bolt feeding device, a rotating disc module, a bolt locking device and a discharging stacking mechanism which are electrically connected with a control system, and the bolt feeding device is used for conveying locking bolts to the bolt locking device. When a carrier for containing a lining box workpiece is rotated to the station of the bolt locking device through the rotating disc module, the bolt locking device is used for automatically assembling locking bolts to the lining box workpiece, and when the carrier for containing the lining box workpiece is rotated to the station of the discharging stacking mechanism through the rotating disc module, the locking bolts are automatically assembled to the lining box workpiece. And the discharging stacking mechanism is used for automatically stacking the locked and assembled lining box workpieces in a material collecting box. Multi-station circulation and accurate positioning of workpieces are achieved, automatic material taking and box placing and stacking are achieved after locking is completed, the design is reasonable, the automation degree is high, the labor cost can be effectively reduced, the production efficiency is greatly improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly and production of hinge liner box bolts for refrigerators, in particular to automatic locking equipment for hinge liner box bolts for refrigerators. Background Art

[0002] In the existing technology, hinge liner locks for refrigerator cabinets are primarily secured using manually operated tightening guns and single-station locking devices, but this is inefficient. In the automation industry, similar single-station locking devices, consisting of a frame, a carrier, a bolt locking unit, and a bolt feeding device, fail to meet the 2s / piece production requirement and require manual removal of workpieces, placement in material bins for palletizing, or robotic gripping and placement until a specific location is reached. These devices lack case packing and stacking capabilities. Therefore, current freezer hinge liner bolt locking operations typically require multiple people working in batches, resulting in low locking efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a device for automatically locking the hinge liner box bolts of a refrigerator, so as to solve the problem of low efficiency in locking the hinge liner box bolts of the refrigerator in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A device for automatically locking bolts for hinge liner boxes of refrigerators, comprising a bolt feeding device, a turntable module, a bolt locking device, a material unloading and stacking mechanism, and a control system, wherein the bolt feeding device, the turntable module, the bolt locking device, and the material unloading and stacking mechanism are electrically connected to the control system respectively;

[0006] Wherein, the bolt feeding device is arranged on one side of the bolt locking device and is used to convey the locking bolts to the bolt locking device;

[0007] The bolt locking device and the blanking and stacking mechanism are sequentially arranged along the rotation direction of the turntable module. The turntable module includes a carrier for placing the liner box workpiece, and when the carrier for placing the liner box workpiece is rotated to the bolt locking device station by the turntable module, the bolt locking device is used to automatically assemble the locking bolts to the liner box workpiece;

[0008] When the carrier on which the liner box workpiece is placed is rotated to the blanking and stacking mechanism station by the turntable module, the blanking and stacking mechanism is used to automatically stack the locked and assembled liner box workpieces in the collection box.

[0009] As a further solution of the present invention: the carrier included in the turntable module is fixedly installed on the rotating table, the rotating table is rotatably connected to the frame, and the center position of the turntable is fixedly connected to the workstation cam divider through a flange, and the reducer included in the turntable module is driven and connected to the workstation cam divider.

[0010] As a further solution of the present invention: the turntable module includes 6 carriers, and each of the carriers is respectively provided with 2 workpiece positioning cavities.

[0011] As a further solution of the present invention: a detection notch is opened on the carrier, and the detection notch is symmetrically arranged on both sides of the workpiece positioning cavity.

[0012] As a further solution of the present invention: two bolt locking devices are arranged along the rotation direction of the turntable module, and the bolt locking device includes a lifting mechanism and a tightening mechanism. The lifting mechanism is arranged on the frame, and the tightening mechanism is driven up and down by the lifting mechanism to automatically assemble the locking bolts to the liner box workpiece.

[0013] As a further solution of the present invention: the tightening mechanism includes four locking motors, the output ends of the locking motors are connected to the top end of the connecting rod through a universal joint coupling, and the bottom end of the connecting rod is provided with a cross cutter head;

[0014] The lifting mechanism includes an upper lifting plate and a lower lifting plate, the locking motor is fixedly mounted on the upper lifting plate, the lower lifting plate is guided and connected to the connecting rod through a fixing block with a waist hole, the upper lifting plate and the lower lifting plate are jointly connected through a vertically arranged screw thread transmission, the top of the screw is fixedly connected to the output end of the lifting motor, and both sides of the upper lifting plate and the lower lifting plate are respectively fixedly connected to a guide sleeve, and the guide sleeve is guided and connected to a guide column.

[0015] As a further solution of the present invention: a locking-in-place sensing device is provided at the top end of the connecting rod.

[0016] As a further solution of the present invention: two of the unloading and stacking mechanisms are arranged along the rotation direction of the turntable module, and the unloading and stacking mechanisms include an industrial robot, the execution end of the industrial robot is a claw end, and the claw end is provided with two suction cups.

[0017] As a further solution of the present invention: the bolt feeding device includes a transparent protective box, a feeding table is provided in the transparent protective box, a storage bin, an automatic bolt arrangement mechanism and a bolt dividing mechanism are arranged on the top of the feeding table in sequence, and the bolt dividing mechanism is connected to the bolt locking device through a conveying pipe.

[0018] As a further solution of the present invention: the material collection box is placed on a conveyor line device, and when the locked and assembled liner box workpieces are automatically stacked in the material collection box through the unloading and stacking mechanism, the conveyor line device includes a conveyor line frame provided with multiple rotating cylinders, and the output end of the rotating cylinder is fixedly connected to a baffle, and the baffle is used to block and limit the stacking position of the material collection box.

[0019] The beneficial effects of the present invention are as follows: the present invention realizes the multi-station flow and precise positioning of workpieces, and realizes automatic material picking and box stacking after the locking is completed. The design is reasonable and the degree of automation is high, which can effectively reduce labor costs, greatly improve production efficiency and reduce labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a structural diagram of the bolt feeding device of the utility model;

[0023] Figure 3 This is a schematic diagram of the turntable module structure of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the bolt locking device of the utility model;

[0025] Figure 5 This is a structural diagram of the blanking and stacking mechanism of the utility model;

[0026] Figure 6 This is a schematic structural diagram of the conveyor line device of the present utility model.

[0027] In the figure: 1. Bolt feeding device; 10. Feeding platform; 11. Storage bin; 12. Automatic bolt arrangement mechanism; 13. Bolt distribution mechanism;

[0028] 2. Turntable module; 20. Rotating table; 21. Carrier; 22. Workpiece positioning cavity; 23. Workstation cam divider; 24. Reducer; 25. Detection notch;

[0029] 3. Bolt locking device; 30. Upper lifting plate; 31. Lower lifting plate; 32. Locking motor; 33. Universal joint coupling; 34. Connecting rod; 35. Cross screwdriver bit; 36. Fixing block with waist hole; 37. Locking position sensor; 38. Lifting motor; 39. Screw; 300. Guide post; 301. Guide sleeve; 302. Photoelectric receiver;

[0030] 4. Unloading and palletizing mechanism; 40. Industrial robot; 41. Claw hand; 42. Suction cup;

[0031] 5. Conveyor line device; 50. Rotating cylinder; 51. Baffle;

[0032] 6. Aggregate box;

[0033] 7. Rack. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, the meaning of "multiple" and "several" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0036] See also Figure 1-6 As shown, the utility model is an automatic locking device for the hinge liner box bolts of a refrigerator, including a bolt feeding device 1, a turntable module 2, a bolt locking device 3, a blanking and stacking mechanism 4 and a control system. The bolt feeding device 1, the turntable module 2, the bolt locking device 3 and the blanking and stacking mechanism 4 are all electrically connected to the control system.

[0037] Among them, the bolt feeding device 1 is arranged on one side of the bolt locking device 3, and is used to convey the locking bolts to the bolt locking device 3; the bolt locking device 3 and the unloading and stacking mechanism 4 are sequentially arranged along the rotation direction of the turntable module 2, and the turntable module 2 includes a carrier 21 for placing the liner box workpiece, and when the carrier 21 for placing the liner box workpiece is rotated to the bolt locking device 3 station through the turntable module 2, the bolt locking device 3 is used to automatically assemble the locking bolts to the liner box workpiece; when the carrier 21 for placing the liner box workpiece is rotated to the unloading and stacking mechanism 4 station through the turntable module 2, the unloading and stacking mechanism 4 is used to automatically stack the locked and assembled liner box workpiece in the collection box 6.

[0038] During the use of the automatic locking equipment of the present application, the liner box workpiece is placed on the carrier 21, and the turntable module 2 is used to drive the liner box workpiece to rotate to different processing stations. When the liner box workpiece is driven to rotate to the bolt locking device 3 station, and the locking bolt is transported to the bolt locking device 3 through the bolt feeding device 1, the locking bolt can be quickly and automatically assembled on the liner box workpiece; when the liner box workpiece after locking and assembly is rotated to the unloading and stacking mechanism 4 station, the liner box workpiece after locking and assembly can be automatically stacked in the collection box 6; the present application can realize multi-station flow and precise positioning of workpieces, and realize automatic material picking and box placement and stacking after locking is completed. It has a reasonable design and a high degree of automation, which can effectively reduce labor costs, greatly improve production efficiency, and reduce labor intensity.

[0039] In this specific embodiment, Figure 3 As shown, the turntable module 2 includes a carrier 21, which is fixedly installed on the turntable 20. The turntable 20 is rotatably connected to the frame 7, and the center position of the turntable 20 is fixedly connected to the station cam divider 23 through a flange. The turntable module 2 includes a reducer 24 that drives the station cam divider 23. When the turntable module 2 rotates, it is convenient to decelerate the motor output torque through the reducer 24 and then transmit it to the station cam divider 23, and the turntable 20 is accurately transferred to the corresponding operating station using the station cam divider 23.

[0040] In this specific embodiment, Figure 3 As shown, the turntable module 2 includes 6 carriers 21, and each carrier 21 is provided with 2 workpiece positioning cavities 22. The 6 carriers 21 in the present application can sequentially complete the liner box workpiece loading station, the first locking assembly station, the second locking assembly station, the first unloading and stacking station, the second unloading and stacking station and the empty station. It should be understood that the station cam divider 23 used in the present application is a 6-station cam divider 23, which can realize multi-station flow and precise positioning of workpieces; the workpiece positioning cavity 22 of the present application can accommodate a total of 12 liner box workpieces for flow operations.

[0041] In this specific embodiment, Figure 1 、 Figure 3 and Figure 4 As shown, a detection notch 25 is provided on the carrier 21, and the detection notch 25 is symmetrically arranged on both sides of the workpiece positioning cavity 22; in order to avoid the problem of empty locking of the bolt locking device 3 without a workpiece, detection notches 25 are left on both sides of the workpiece positioning cavity 22, and the presence of a workpiece on the carrier 21 is detected by photoelectric detection. The photoelectric receiving end 302 corresponding to the detection notch 25 on one side is installed on the frame 7 of the bolt locking device 3, and the photoelectric transmitting end corresponding to the detection notch 25 on the other side can be installed on the central bracket of the rotating table 20, and the photoelectric transmitting end does not need to rotate with the rotating table 20.

[0042] In this specific embodiment, Figure 4 As shown, two bolt locking devices 3 are provided along the rotation direction of the turntable module 2. The bolt locking device 3 includes a lifting mechanism and a tightening mechanism. The lifting mechanism is provided on the frame 7. The tightening mechanism is driven up and down by the lifting mechanism so that the locking bolts are automatically assembled to the liner box workpiece. The present application adopts a double-station bolt locking process to greatly improve production efficiency.

[0043] In this specific embodiment, Figure 4 As shown, the tightening mechanism includes four locking motors 32, the output end of the locking motor 32 is connected to the top of the connecting rod 34 through a universal joint coupling 33, and the bottom end of the connecting rod 34 is provided with a cross cutter head 35; the lifting mechanism includes an upper lifting plate 30 and a lower lifting plate 31, the locking motor 32 is fixedly mounted on the upper lifting plate 30, and the lower lifting plate 31 is guided to connect the connecting rod 34 through a fixing block 36 with a waist hole. The upper lifting plate 30 and the lower lifting plate 31 are connected together by a vertically arranged screw rod 39 with a threaded transmission, and the top end of the screw rod 39 is fixedly connected to the output end of the lifting motor 38. The upper and lower lifting plates 30 and 31 are fixedly connected on both sides of the upper and lower lifting plates 30 and 31 respectively, and the guide sleeves 301 are guided inside the guide sleeves 301 to connect the guide posts 300. During the operation of the bolt locking device 3 of the present application, it is convenient to stably move the upper and lower lifting plates 30 and 31 up and down through the threaded transmission of the lifting motor 38, so that the tightening mechanism can quickly reach the liner box workpiece locking bolt operation position. The locking motor 32 of the tightening mechanism is connected to the cross cutter head 35 through the universal joint coupling 33 and supported by the fixed block 36 with waist hole, which can ensure the verticality of the action of the connecting rod 34 and the adjustable spacing.

[0044] It should be understood that the lifting mechanism uses a lifting motor 38 with a brake and a screw 39 transmission mechanism, which can achieve precise positioning to meet the requirements of model change and beat, and can prevent the cross cutter head 35 from falling and damaging it during power outages. In conjunction with the guide mechanism composed of double guide columns 300 and guide sleeves 301, it can ensure that the overall tightening and fixing table does not tilt during long-term movement.

[0045] In this specific embodiment, Figure 4 As shown, a locking-in-place sensing device 37 is provided at the top end of the connecting rod 34. The locking-in-place sensing device 37 can be a limit sensor or a proximity switch. Since the bolt cannot be locked to the bottom when locked, the action position of the connecting rod 34 during the tightening process is sensed and controlled.

[0046] In this specific embodiment, Figure 5As shown, two unloading and stacking mechanisms 4 are arranged along the rotation direction of the turntable module 2, and the unloading and stacking mechanism 4 includes an industrial robot 40. The execution end of the industrial robot 40 is a claw end 41, and the claw end 41 is provided with two suction cups 42; the present application adopts double-station bolt unloading and stacking processing, which greatly improves production efficiency. During operation, the industrial robot 40 is a 4-axis Epson SCARA robot, model LS20-B804S, and the travel range meets the arrival requirements of each workpiece, which is convenient for adsorption, grasping and locking the assembled liner box workpiece through the two suction cups 42 on the claw end 41, and automatically stacking it in the collection box 6.

[0047] In this specific embodiment, Figure 1 As shown, the bolt feeding device 1 includes a transparent protective box, in which a feeding table 10 is provided, and a storage bin 11, an automatic bolt arrangement mechanism 12 and a bolt dividing mechanism 13 are arranged on the top of the feeding table 10 in sequence, and the bolt dividing mechanism 13 is connected to the bolt locking device 3 through a conveying pipe; the bolt feeding device 1 of the present application sets the main mechanism components in the transparent protective box to avoid the influence of falling dust. During the locking bolt feeding operation, the storage bin 11 is used to store bolt locking parts, which can accommodate more than 10,000 bolts at a time, so that the bolts in the storage bin 11 can be conveyed to the dividing mechanism through the automatic bolt arrangement mechanism 12, so that the bolt locking parts can be conveyed from the nail feeding port of the dividing mechanism to the cross cutter head 35 of the tightening mechanism through the PU air pipe, so that each tightening mechanism can obtain a corresponding locking bolt.

[0048] It should be understood that when the bolt feeding device 1 is in use and the automatic bolt arrangement mechanism 12 is utilized, the contoured baffle can be used to identify the large and irregularly shaped bolts and automatically remove them from the queue sequence; in addition, the bolt feeding device 1 and the bolt locking device 3 are arranged in a one-to-one correspondence.

[0049] In this specific embodiment, Figure 6As shown, the collection box 6 is placed on the conveyor line device 5, and when the liner box workpieces after locking and assembly are automatically stacked in the collection box 6 through the unloading and stacking mechanism 4, the conveyor line device 5 includes a conveyor line frame provided with multiple rotating cylinders 50, and the output end of the rotating cylinder 50 is fixedly connected to the baffle 51, and the baffle 51 is used to block and limit the stacking position of the collection box 6; in the process of automatic unloading and stacking, the conveyor line device 5 and the unloading and stacking mechanism 4 are set one by one, and the conveyor line device 5 for the collection box 6 to enter and exit adopts several uniform The cloth is equipped with a non-powered galvanized or stainless steel roller with a diameter of 50mm and a length of 900mm, which can meet the storage needs of 2 material boxes. The material box size is 595*395*330mm (length, width and depth). After the empty aggregate box 6 is manually pushed in, the baffle 51 is used to clamp and fix the aggregate box 6. At this time, the conditions for discharging are met. The aggregate box 6 uses photoelectric detection to prevent the robot from emptying it. When it is full, the rotating cylinder 50 opens to release the restriction on the aggregate box 6, and it can be easily pulled out and replaced manually.

[0050] It should be understood that the control system used in this application is for automated system control. The control system can be a Mitsubishi FX-5U-60MT / ES programmable control system, with a Weiluntong MT8102 i Q touch screen (10 inches) as the human-machine interface to achieve system logic control of the entire device. The touch screen design is beautiful, reasonable and complete, with screens such as manual operation, parameter setting, signal monitoring, current alarm, historical alarm, etc. The homepage displays actual hourly production data and beat data, etc. The whole machine working mode is divided into manual / automatic. All manual operations are implemented on the touch screen. The system needs to enter the automatic state (with light button) before it can start the cycle operation. When a fault alarm occurs, the automatic state fails and automatically switches to the manual state. It needs to be reset to eliminate the alarm and then restart to the automatic state. A two-hand cycle start button (2 signals, mushroom head button) is set at the loading station. It can have start modes such as single start, double start, and automatic start without exit timing (the timing can be set, so the beat can be adjusted). It can be switched by parameter setting. In the event of an operating fault, a restart function is required without manual emptying. The two robots for unloading and palletizing can be switched to single or full activation. The bin count can be modified, and an audio and visual prompt (with a three-color light and buzzer) is provided when the bin is full. Replacing materials at a single unloading station does not affect continued production. A pair of light barriers is installed at the manual loading port, a pair of light barriers is installed between the loading station and the adjacent locking unit, and a pair of light barriers is installed between the loading station and the adjacent empty station. When the light barriers are intruded, the turntable will not move and must be reset and restarted.

[0051] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A device for automatically locking the hinge liner bolts of a refrigerator, characterized in that: It comprises a bolt feeding device (1), a turntable module (2), a bolt locking device (3), a material unloading and stacking mechanism (4) and a control system, wherein the bolt feeding device (1), the turntable module (2), the bolt locking device (3) and the material unloading and stacking mechanism (4) are electrically connected to the control system respectively; Wherein, the bolt feeding device (1) is arranged on one side of the bolt locking device (3) and is used to convey the locking bolts to the bolt locking device (3); The bolt locking device (3) and the blanking and stacking mechanism (4) are sequentially arranged along the rotation direction of the turntable module (2); the carrier (21) included in the turntable module (2) is used to place the liner box workpiece, and when the carrier (21) on which the liner box workpiece is placed is rotated to the working position of the bolt locking device (3) by the turntable module (2), the bolt locking device (3) is used to automatically assemble the locking bolts onto the liner box workpiece; When the carrier (21) on which the liner box workpiece is placed is rotated to the workstation of the unloading and stacking mechanism (4) by the turntable module (2), the unloading and stacking mechanism (4) is used to automatically stack the locked and assembled liner box workpiece in the collection box (6).

2. The automatic locking device for hinge liner bolts of refrigerator according to claim 1 is characterized in that: The turntable module (2) includes a carrier (21) which is fixedly mounted on a rotating platform (20). The rotating platform (20) is rotatably connected to a frame (7). The center position of the rotating platform (20) is fixedly connected to a station cam divider (23) via a flange. The turntable module (2) includes a reducer (24) which is driven and connected to the station cam divider (23).

3. The automatic locking device for hinge liner bolts of refrigerator according to claim 1 is characterized in that: The turntable module (2) includes six carriers (21), and each of the carriers (21) is provided with two workpiece positioning cavities (22).

4. The automatic locking device for hinge box bolts of refrigerator according to claim 3 is characterized in that: The carrier (21) is provided with a detection notch (25), and the detection notch (25) is symmetrically arranged on both sides of the workpiece positioning cavity (22).

5. The automatic locking device for hinge box bolts of refrigerator according to claim 3 is characterized in that: Two bolt locking devices (3) are provided along the rotation direction of the turntable module (2). The bolt locking devices (3) include a lifting mechanism and a tightening mechanism. The lifting mechanism is provided on a frame (7). The tightening mechanism is driven up and down by the lifting mechanism so that the locking bolts are automatically assembled on the liner box workpiece.

6. The automatic locking device for hinge liner bolts of refrigerator according to claim 5 is characterized in that: The tightening mechanism includes four locking motors (32), the output ends of the locking motors (32) are connected to the top end of a connecting rod (34) through a universal joint coupling (33), and the bottom end of the connecting rod (34) is provided with a cross cutter head (35); The lifting mechanism comprises an upper lifting plate (30) and a lower lifting plate (31), the locking motor (32) is fixedly mounted on the upper lifting plate (30), the lower lifting plate (31) is guided and connected to the connecting rod (34) via a fixing block (36) with a waist hole, the upper lifting plate (30) and the lower lifting plate (31) are connected by a screw rod (39) arranged vertically, the top end of the screw rod (39) is fixedly connected to the output end of the lifting motor (38), and both sides of the upper lifting plate (30) and the lower lifting plate (31) are respectively fixedly connected to a guide sleeve (301), and the guide sleeve (301) is guided and connected to a guide column (300).

7. The automatic locking device for hinge box bolts of refrigerator according to claim 6 is characterized in that: The top end of the connecting rod (34) is provided with a locking in place sensing device (37).

8. The automatic locking device for hinge box bolts of refrigerators according to claim 3 is characterized in that: Two of the unloading and stacking mechanisms (4) are provided along the rotation direction of the turntable module (2). The unloading and stacking mechanisms (4) include an industrial robot (40). The execution end of the industrial robot (40) is a claw end (41), and two suction cups (42) are provided on the claw end (41).

9. The automatic locking device for hinge box bolts of refrigerators according to claim 1 is characterized in that: The bolt feeding device (1) comprises a transparent protective box, a feeding platform (10) is provided in the transparent protective box, a storage bin (11), an automatic bolt arrangement mechanism (12) and a bolt distribution mechanism (13) are sequentially arranged on the top of the feeding platform (10), and the bolt distribution mechanism (13) is connected to the bolt locking device (3) via a conveying pipe.

10. The automatic locking device for hinge liner bolts of refrigerator according to claim 1, characterized in that: The material collecting box (6) is placed on the conveyor line device (5), and when the locked and assembled liner box workpieces are automatically stacked in the material collecting box (6) through the unloading and stacking mechanism (4), the conveyor line device (5) includes a conveyor line frame provided with a plurality of rotating cylinders (50), and the output end of the rotating cylinder (50) is fixedly connected to a baffle (51), and the baffle (51) is used to block and limit the stacking position of the material collecting box (6).

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