Automatic screw turning equipment

Abstract

The utility model relates to the technical field of mechanical assembly, and discloses an automatic screw turning device which comprises a bottom plate and a fixing frame on the top of the bottom plate, an adjusting screw turning mechanism for installing screws on a pot cover is arranged in the fixing frame, and a feeding mechanism for feeding the pot cover is arranged on the top of the bottom plate. The top of the bottom plate is provided with screw feeding equipment used for feeding screws needed for installing the adjusting screw turning mechanism. The adjusting screw turning mechanism for installing screws on the pot cover is arranged in the fixing frame, the space between the four sets of loading plates can be dynamically adjusted according to the positions where the screws need to be installed on the pot cover, so that the space between the four sets of electric screwdrivers can be dynamically adjusted, the screws can be automatically screwed, and the machining efficiency is guaranteed; the feeding mechanism for feeding the pot cover is arranged at the top of the bottom plate, so that the containing disc can rotate intermittently, continuous assembling of multiple sets of pot cover screws is achieved, and the assembling efficiency of the pot cover screws is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical assembly, in particular to an automatic screw - tightening device. Background Technique

[0002] Screw connection is a common connection method in assembly. The assembly of many products requires the use of screw - nut connection. For example, when assembling the lids of rice cookers, slow cookers, etc., in order to ensure the stable connection between the pot top and the lid, screw - nut connection is often used. Generally, nuts are preset inside the pot tops of rice cookers and slow cookers. During the assembly process, screws need to be screwed into the preset nuts. However, through traditional manual screwing, the labor cost is high and the efficiency is low.

[0003] In order to speed up the screw - tightening speed and improve the processing efficiency, an automatic screw - tightening device is often used. For example, an automatic screw - locking machine (authorized publication number: CN112809356B) disclosed on the patent website. This existing device uses a product transfer device to sequentially move products to the workstations of each link. The nut supply and placement device simultaneously supplies and places nuts at different positions, and the automatic screw - tightening device simultaneously tightens the screws at different positions on one product to improve the screw - locking efficiency. However, in actual application, due to the relatively fixed distance between multiple groups of automatic screw - tightening devices, it is difficult to correspondingly adjust the distance between multiple groups of automatic screw - tightening devices according to the spacing of the screws required for different workpieces to be processed, resulting in poor practicability. And because this existing device needs to adjust the position of the automatic screw - tightening device multiple times in one operation to process different workpieces to be processed, there are problems of cumbersome operation and low processing efficiency. Therefore, aiming at the disadvantages existing in this existing device, we urgently need to improve an automatic screw - tightening device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic screw - tightening device to solve the problems raised in the above background technique.

[0005] To achieve the above - mentioned purpose, the utility model provides the following technical solution: An automatic screw - tightening device, including a bottom plate and a fixed frame on its top. An adjustable screw - tightening mechanism for installing screws on the lid is arranged inside the fixed frame. A feeding mechanism for feeding the lid is arranged on the top of the bottom plate, and a screw feeding device for feeding the screws required for installing the adjustable screw - tightening mechanism is arranged on the top of the bottom plate.

[0006] Preferably, the adjusting screw-tightening mechanism includes an adjusting component for changing the assembly position according to the position of the screws required for installing different pot covers, a fixing frame is provided in the adjusting component, the fixing frame is fixedly installed inside the fixing frame, a driving motor is fixedly installed inside the fixing frame, a bevel gear disk is fixedly installed on the output shaft of the driving motor, a connecting plate is fixedly installed on the bottom of the fixing frame, a threaded rod is rotatably installed inside the connecting plate, a limiting rod is fixedly installed on the outside of the connecting plate, a bevel gear is fixedly installed on the outside of the threaded rod close to the bevel gear disk, a loading plate is threadedly installed on the outside of the threaded rod, and an isolation frame is fixedly installed on the bottom of the fixing frame, so as to facilitate dynamic adjustment of the spacing between the four groups of loading plates according to the position where the screws need to be installed on the pot cover.

[0007] Preferably, four groups of connecting plates are provided, and the four groups of connecting plates are distributed at the bottom of the fixed frame. The bevel gear is engaged with the bevel gear disc, and a through hole for the limiting rod to pass through is opened inside the loading plate to facilitate stable adjustment of the loading plate.

[0008] Preferably, the adjusting screw-tightening mechanism also includes a screw-tightening assembly for screwing the pot cover with screws transmitted by the screw feeding device, and the screw-tightening assembly is provided with a mounting frame and a connecting frame, and the mounting frame is fixedly installed on the outside of the loading plate, and the mounting frame is provided with a lifting unit for adjusting the height of the connecting frame to screw-tighten pot covers of different thicknesses, and the connecting frame is provided with a feeder, and the top of the feeder is fixedly installed with a material transfer tube that can be connected to the screw feeding device, and the bottom of the loading plate is fixedly installed with a positioning frame, and the bottom of the feeder is provided with an electric screwdriver for screwing, and the output end of the electric screwdriver is provided with a detachable screw head, which facilitates the automatic tightening of the pot cover screws and ensures processing efficiency.

[0009] Preferably, a slot is provided in the positioning frame through which the output end of the power supply screw passes. The feeder can deliver the screws to the bottom of the screw head, and the screw head can magnetically attract the screws, so as to facilitate stable installation of the screws and avoid the screws falling off before installation.

[0010] Preferably, the feeding mechanism includes a mounting rod, which is rotatably mounted on the top of the base plate, a sub-turntable is fixedly mounted on the top of the mounting rod, a first motor is fixedly mounted on the top of the base plate, a connecting disk is fixedly mounted on the output shaft of the first motor, a toggle column is fixedly mounted on the top of the connecting disk, a material receiving tray is fixedly mounted on the top of the sub-turntable, and a placement groove for placing pot lids is opened inside the material receiving tray, which facilitates intermittent rotation of the material receiving tray to realize continuous processing of multiple groups of pot lids, improve processing efficiency, and enhance the practicality of the device.

[0011] Preferably, the connecting disk and the toggle column are in contact with the sub-rotary disk, which facilitates the intermittent and stable rotation of the sub-rotary disk. An annular groove for the material receiving disk to rotate is provided inside the bottom plate, which facilitates the stable rotation of the material receiving disk.

[0012] Compared with the prior art, the present invention provides an automatic screw tightening device with the following beneficial effects:

[0013] 1. The automatic screw-tightening equipment sets an adjustment screw-tightening mechanism for the pot cover mounting screws in the fixed frame. During use, the spacing between the four groups of loading plates can be dynamically adjusted according to the position where the screws need to be installed on the pot cover, so as to dynamically adjust the spacing between the four groups of electric batches, and the screws can be automatically tightened to ensure processing efficiency.

[0014] 2. The automatic screw-tightening device is provided with a loading mechanism for loading the pot cover on the top of the bottom plate. During use, the loading tray can be rotated intermittently to realize the continuous installation of multiple groups of pot cover screws, thereby improving the installation efficiency of the automatic screw-tightening device for the pot cover screws and enhancing the practicality of the automatic screw-tightening device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of this automatic screw tightening equipment Figure 1 .

[0016] Figure 2 Schematic diagram of the three-dimensional structure of this automatic screw tightening equipment Figure 2 .

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the screw-tightening mechanism for adjusting the screw in this automatic screw-tightening equipment.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustment component in this automatic screw tightening equipment.

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the screw tightening assembly in this automatic screw tightening equipment.

[0020] Figure 6 This is a schematic diagram of the disassembled structure of the feeding mechanism in this automatic screw driving equipment.

[0021] In the figure: 1. Bottom plate; 2. Fixed frame; 3. Adjusting and screwing mechanism; 31. Adjusting component; 311. Fixed frame; 312. Driving motor; 313. Bevel gear disc; 314. Connecting plate; 315. Threaded rod; 316. Limiting rod; 317. Bevel gear; 318. Loading plate; 319. Isolation frame; 32. Screwing component; 321. Mounting frame; 322. Lifting unit; 323. Connecting frame; 324. Feeder; 325. Feeding pipe; 326. Positioning frame; 327. Electric screwdriver; 328. Bit; 4. Loading mechanism; 41. Mounting rod; 42. Dividing turntable; 43. First motor; 44. Connecting disc; 45. Poking column; 46. Material holding tray; 47. Placing groove; 5. Screw feeding device; 6. Pot lid. Detailed implementation mode

[0022] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0023] Embodiment 1: Please refer to Figures 1-5 , the present invention provides a technical solution: an automatic screwing device, including a bottom plate 1 and a fixed frame 2 on its top. An adjusting and screwing mechanism 3 for installing screws on the pot lid 6 is arranged inside the fixed frame 2. A loading mechanism 4 for loading the pot lid 6 is arranged on the top of the bottom plate 1. A screw feeding device 5 for feeding the screws required for installing the adjusting and screwing mechanism 3 is arranged on the top of the bottom plate 1.

[0024] Furthermore, the adjusting and screwing mechanism 3 includes an adjusting component 31 for changing the assembly position according to the positions of the screws required to be installed on different pot lids 6. A fixed frame 311 is arranged inside the adjusting component 31. The fixed frame 311 is fixedly installed inside the fixed frame 2. A driving motor 312 is fixedly installed inside the fixed frame 311. A bevel gear disc 313 is fixedly installed on the output shaft of the driving motor 312. A connecting plate 314 is fixedly installed at the bottom of the fixed frame 311. A threaded rod 315 is rotatably installed inside the connecting plate 314. A limiting rod 316 is fixedly installed outside the connecting plate 314. A bevel gear 317 is fixedly installed on the outside of the threaded rod 315 close to the bevel gear disc 313. A loading plate 318 is threadedly installed on the outside of the threaded rod 315. An isolation frame 319 is fixedly installed at the bottom of the fixed frame 311, which is convenient for dynamically adjusting the spacing of the four groups of loading plates 318 according to the positions where the pot lid 6 needs to install screws.

[0025] Furthermore, there are four groups of connecting plates 314, which are distributed at the bottom of the fixed frame 311. The bevel gear 317 meshes with the bevel gear disc 313. Through holes for the limiting rod 316 to penetrate are formed inside the loading plate 318, which is convenient for stably adjusting the loading plate 318.

[0026] Furthermore, the screw-tightening mechanism 3 also includes a screw-tightening assembly 32 for screwing the pot cover 6 using the screws transmitted by the screw feeding device 5. The screw-tightening assembly 32 is provided with a mounting frame 321 and a connecting frame 323. The mounting frame 321 is fixedly installed on the outside of the loading plate 318. The mounting frame 321 is provided with a lifting unit 322 for adjusting the height of the connecting frame 323 to screw the pot covers 6 of different thicknesses. A feeder 324 is provided inside the connecting frame 323. A material transfer tube 325 that can be connected to the screw feeding device 5 is fixedly installed on the top of the feeder 324. A positioning frame 326 is fixedly installed at the bottom of the loading plate 318. An electric screwdriver 327 for screwing is provided at the bottom of the feeder 324. A detachable screwdriver head 328 is provided at the output end of the electric screwdriver 327, which facilitates the automatic tightening of the screws of the pot cover 6 and ensures processing efficiency.

[0027] Furthermore, a slot is provided in the positioning frame 326 through which the output end of the power supply screw 327 passes. The feeder 324 can deliver the screws to the bottom of the screw head 328, and the screw head 328 can magnetically attract the screws, thereby facilitating stable installation of the screws and avoiding the screws from falling off before installation.

[0028] Example 2: Please refer to Figures 2-6 , and combined with Example 1, it is further obtained that the feeding mechanism 4 includes a mounting rod 41, the mounting rod 41 is rotatably mounted on the top of the base plate 1, a sub-rotary disk 42 is fixedly mounted on the top of the mounting rod 41, a first motor 43 is fixedly mounted on the top of the base plate 1, a connecting disk 44 is fixedly mounted on the output shaft of the first motor 43, a toggle column 45 is fixedly mounted on the top of the connecting disk 44, a material receiving tray 46 is fixedly mounted on the top of the sub-rotary disk 42, and a placement groove 47 for placing the pot cover 6 is opened inside the material receiving tray 46, which facilitates the intermittent rotation of the material receiving tray 46 to realize continuous processing of multiple groups of pot covers 6, improve processing efficiency, and enhance the practicality of the automatic screw tightening equipment.

[0029] Furthermore, the connecting plate 44 and the toggle post 45 are in contact with the sub-rotating plate 42, which facilitates the intermittent and stable rotation of the sub-rotating plate 42. An annular groove for the material receiving plate 46 to rotate is provided inside the bottom plate 1, which facilitates the stable rotation of the material receiving plate 46.

[0030] During actual operation, when it is necessary to install screws on the pot cover 6, the pot cover 6 to be processed can be placed inside the placement groove 47, and then the spacing of the four groups of electric screwdrivers 327 can be adjusted according to the position where the screws need to be installed on the pot cover 6, and the driving motor 312 can be turned on to rotate the bevel gear disc 313 to rotate the four groups of bevel gears 317 meshing with the bevel gear disc 313, so that the threaded rod 315 can rotate. Under the limit of the limiting rod 316, the provided loading plate 318 can be moved, thereby driving the mounting bracket 321 to move accordingly, so as to change the spacing of the four groups of electric screwdrivers 327. After the requirement is met, the driving motor 312 can be turned off, and then the screws to be installed can be added to the screw feeding device 5. Under the action of the screw feeding device 5 and the transfer pipe 325, the screws can be conveyed, and the screws can be supplied to the batch head through the action of the feeder 324. 328 bottom, then the lifting unit 322 can be opened to drive the electric screwdriver 327 to descend as a whole to contact the pot cover 6, place the screws into the screw holes inside the pot cover 6, and then open the electric screwdriver 327 to drive the screwdriver head 328 to rotate to install the screws into the inside of the pot cover 6 to achieve the purpose of automatically tightening the screws. After the installation is completed, the lifting unit 322 is controlled to restore the electric screwdriver 327 to its initial position, and then the first motor 43 can be turned on to rotate the connecting disk 44 to make the toggle column 45 to toggle the sub-turntable 42 intermittently rotate, so that the material receiving tray 46 intermittently rotates, and with the assistance of the annular groove inside the bottom plate 1, the rotation stability of the material receiving tray 46 can be guaranteed. When the material receiving tray 46 rotates, the next group of material receiving trays 46 can be rotated to the bottom of the electric screwdriver 327. At this time, the electric screwdriver 327 completes the screw removal work again, and then the installation of this group of pot cover 6 screws can be completed.

[0031] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automatic screw-tightening device, comprising a bottom plate (1) and a fixing frame (2) on top of it, characterized in that: An adjusting and screwing mechanism (3) for installing screws on the pot lid (6) is arranged inside the fixing frame (2). A feeding mechanism (4) for feeding the pot lid (6) is arranged at the top of the bottom plate (1), and a screw feeding device (5) for feeding the screws required for installing the adjusting and screwing mechanism (3) is arranged at the top of the bottom plate (1).

2. The automatic screw-tightening device according to claim 1, characterized in that: The adjusting and screwing mechanism (3) includes an adjusting component (31) for changing the assembly position according to the positions where screws need to be installed on different pot lids (6). A fixed frame (311) is arranged inside the adjusting component (31). The fixed frame (311) is fixedly installed inside the fixing frame (2). A driving motor (312) is fixedly installed inside the fixed frame (311). A bevel gear disc (313) is fixedly installed on the output shaft of the driving motor (312). A connecting plate (314) is fixedly installed at the bottom of the fixed frame (311). A threaded rod (315) is rotatably installed inside the connecting plate (314). A limiting rod (316) is fixedly installed outside the connecting plate (314). A bevel gear (317) is fixedly installed on the outer side of the threaded rod (315) close to the bevel gear disc (313). A loading plate (318) is threadedly installed on the threaded rod (315). An isolation frame (319) is fixedly installed at the bottom of the fixed frame (311).

3. An automatic screw-tightening device according to claim 2, characterized in that: Four groups of the connecting plates (314) are arranged. The four groups of the connecting plates (314) are distributed at the bottom of the fixed frame (311). The bevel gear (317) is meshed with the bevel gear disc (313). Through holes for the limiting rod (316) to penetrate are formed inside the loading plate (318).

4. The automatic screw-tightening device according to claim 2, characterized in that: The adjusting and screwing mechanism (3) further includes a screwing component (32) for installing screws on the pot lid (6) by using the screws conveyed by the screw feeding device (5). An installation frame (321) and a connecting frame (323) are arranged inside the screwing component (32). The installation frame (321) is fixedly installed outside the loading plate (318). A lifting unit (322) for adjusting the height of the connecting frame (323) to install screws on pot lids (6) with different thicknesses is arranged inside the installation frame (321). A feeder (324) is arranged inside the connecting frame (323). A conveying pipe (325) that can be connected to the screw feeding device (5) is fixedly installed at the top of the feeder (324). A positioning frame (326) is fixedly installed at the bottom of the loading plate (318). An electric screwdriver (327) for screwing the screws is arranged at the bottom of the feeder (324). A detachable bit (328) is arranged at the output end of the electric screwdriver (327).

5. The automatic screw-tightening device according to claim 4, characterized in that: A groove for the output end of the electric screwdriver (327) to penetrate is formed inside the positioning frame (326). The feeder (324) can convey the screws to the bottom of the bit (328), and the bit (328) can magnetically attract the screws.

6. An automatic screw-tightening device according to claim 1, characterized in that: The feeding mechanism (4) comprises a mounting rod (41), the mounting rod (41) being rotatably mounted on the top of the base plate (1), a sub-rotating disc (42) being fixedly mounted on the top of the mounting rod (41), a first motor (43) being fixedly mounted on the top of the base plate (1), a connecting disc (44) being fixedly mounted on the output shaft of the first motor (43), a toggle column (45) being fixedly mounted on the top of the connecting disc (44), a material receiving disc (46) being fixedly mounted on the top of the sub-rotating disc (42), and a placement groove (47) for placing a pot cover (6) being provided inside the material receiving disc (46).

7. An automatic screw-tightening device according to claim 6, characterized in that: The connecting disc (44) and the shifting column (45) are both in contact with the sub-rotating disc (42), and an annular groove for the material holding disc (46) to rotate is provided inside the bottom plate (1).

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