Device for automatically fixing screws

Abstract

The invention discloses a device for automatically fixing screws. The device comprises a jacking assembly, a positioning assembly, a pressing assembly and a screw hitting assembly. The jacking assembly is used for vertically jacking the first workpiece and the second workpiece in the assembled state from the conveying line to the set height. The positioning assembly is used for positioning the jacked first workpiece and the jacked second workpiece; the pressing assembly is used for aligning and pressing the first workpiece and the second workpiece; the screw hitting assembly is used for conducting screw hitting and fixing on the first workpiece and the second workpiece which are pressed tightly at set positions. According to the device for automatically fixing the screws, through cooperation of the jacking assembly, the positioning assembly and the clamping assembly with the conveying line, the alignment screw fixing process of the two workpieces is achieved, the whole process is automatic, the machining efficiency is high, and the labor intensity of workers and errors of manual operation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic screw driving equipment, and particularly to a device for automatically fixing screws between an outdoor unit of an air conditioner and a top cover. Background Art

[0002] In the current air conditioner industry, the fixation between the outdoor unit and the top cover highly relies on manual operation. Workers need to repeat the positioning and alignment actions for a long time, and it is easy to have the phenomena of missing screws and skewed screwing. In the manual assembly method, the labor intensity of workers is high, the production efficiency is low, and the processing quality is unreliable. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for automatically fixing screws, so as to solve the technical problems of low efficiency and high working intensity caused by the existing manual assembly of the outdoor unit and the top cover.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An embodiment of the present invention provides a device for automatically fixing screws, which includes: a lifting assembly, a positioning assembly, a pressing assembly, and a screw driving assembly;

[0006] The lifting assembly is used to vertically lift the first workpiece and the second workpiece in the assembled state from the conveyor line to a set height;

[0007] The positioning assembly is used to position the lifted first workpiece and second workpiece;

[0008] The pressing assembly is used to press and align the first workpiece and the second workpiece;

[0009] The screw driving assembly is used to fix the pressed first workpiece and second workpiece with screws at a set position.

[0010] Among them, the lifting assembly includes: a lifting bracket, at least one group of lifting units connected to the lifting bracket, and each lifting unit includes a lifting power component and a lifting support plate connected to the moving end of the lifting power component.

[0011] Among them, the lifting support plate includes: a horizontal support plate and a side plate vertically bent from one side edge of the horizontal support plate.

[0012] Among them, the positioning assembly includes: a positioning bracket, a lifting power component connected to the positioning bracket, a horizontal power component connected to the moving end of the lifting power component, and a positioning plate connected to the moving end of the horizontal power component.

[0013] Wherein, the positioning component further includes a process pallet and a correction driving member disposed at the bottoms of the first workpiece and the second workpiece. Two vertically distributed positioning side plates are provided on the process pallet. One of the positioning side plates is disposed opposite to the positioning plate, and the correction driving member is disposed opposite to the other positioning side plate.

[0014] Wherein, the pressing component includes: a gantry, and at least one set of pressing units connected to the gantry. The pressing units perform lifting actions to press the first workpiece and the second workpiece in alignment.

[0015] Wherein, the pressing unit includes: a connecting plate, a pressing power member connected to the connecting plate, and a pressing plate connected to the moving end of the pressing power member.

[0016] Wherein, at least two strip holes are provided on the connecting plate. The connecting plate is adjustably connected to the gantry through screws passing through the strip holes.

[0017] Wherein, adjusting plates are respectively provided on each leg of the gantry. Strip adjusting holes are provided on the adjusting plates, and screws are inserted into the strip adjusting holes.

[0018] Wherein, the device for automatically fixing screws further includes a chain transmission line for conveying the first workpiece and the second workpiece. The lifting component and the positioning component are disposed below the chain transmission line, and the pressing component is disposed above the chain transmission line.

[0019] The device for automatically fixing screws of the present invention realizes the process of aligning and screwing two workpieces through the cooperation of the lifting component, the positioning component and the clamping component with the conveyor line, with the whole process being automated, high processing efficiency, and reduced labor intensity of workers and errors in manual operations.

[0020] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following preferred embodiments are specifically described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the device for automatically fixing screws according to an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of a partial structure of the lifting component of the device for automatically fixing screws according to an embodiment of the present invention.

[0023] Figure 3 It is a top view of a partial structure of the lifting component of the device for automatically fixing screws according to an embodiment of the present invention.

[0024] Figure 4 Front view of the lifting component part of the automatic screw fixing device according to an embodiment of the present invention.

[0025] Figure 5 Side view of the lifting component part of the automatic screw fixing device according to an embodiment of the present invention.

[0026] Figure 6 Schematic structural diagram of the positioning component part of the automatic screw fixing device according to an embodiment of the present invention.

[0027] Figure 7 Top view of the positioning component part of the automatic screw fixing device according to an embodiment of the present invention.

[0028] Figure 8 Front view of the positioning component part of the automatic screw fixing device according to an embodiment of the present invention.

[0029] Figure 9 Side view of the positioning component part of the automatic screw fixing device according to an embodiment of the present invention.

[0030] Figure 10 Schematic structural diagram of the clamping component part of the automatic screw fixing device according to an embodiment of the present invention.

[0031] Figure 11 Front view of the clamping component part of the automatic screw fixing device according to an embodiment of the present invention.

[0032] Figure 12 is Figure 1 Schematic enlarged structural diagram of the local part A in

[0033] Explanation of reference numerals:

[0034] Automatic screw fixing device 100, air conditioner outdoor unit 200, process pallet 300, chain transmission line 1, lifting component 2, positioning component 3, pressing component 4, screw driving component 5, lifting bracket 21, fixing plate 22, lifting power member 23, lifting pallet 24, horizontal push plate 241, side plate 242, positioning bracket 31, fixed bottom plate 32, lifting power member 33, connecting plate 34, horizontal power member 35, positioning plate 36, gantry 41, pressing power member 42, pressing plate 43, assembly plate 44, gantry support leg 411, transverse support bar 412, adjusting plate 413, strip-shaped adjusting hole 4131, strip-shaped hole 441, outdoor unit main body 201, top cover 202, positioning side plate 301. Detailed implementation manners

[0035] In order to make the purpose, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] In the current air-conditioning industry, the fixing of the external unit and the top cover is highly dependent on manual operation. Workers need to repeat positioning and alignment actions for a long time, which is prone to omission and crookedness. The manual assembly method has high labor intensity, low production efficiency, and unreliable processing quality. Therefore, based on the above requirements, this embodiment provides a device 100 for automatically fixing screws.

[0043] See also Figures 1 to 12 The present embodiment discloses an automatic screw fixing device 100, which is used to position and screw the outer body 201 of the air conditioner outer unit 200 and the top cover 202. The outer body 201 is also referred to as the first workpiece, and the top cover 202 is also referred to as the second workpiece. The automatic screw fixing device 100 includes: a lifting component 2, a positioning component 3, a pressing component 4, and a screw driving component 5.

[0044] The lifting assembly 2 is used to lift the first and second workpieces in the assembled state vertically from the conveyor line to a set height; the lifting assembly 2 is used to lift the first and second workpieces in the assembled state from the conveyor line to separate them from the conveyor line, and on the other hand, to lift the first and second workpieces to a set height so as to cooperate with the positioning assembly 3 to accurately position them. The first and second workpieces include but are not limited to the external machine body 201 and the top cover 202 of the present application. Before entering the lifting assembly 2, the first and second workpieces have been preliminarily assembled, but the two have not been locked and fixed. The automatic screw fixing device 100 of this embodiment performs the screw fixing process of the first and second workpieces.

[0045] The positioning assembly 3 is used to position the first workpiece and the second workpiece after being lifted; the positions of the first workpiece and the second workpiece need to be accurately corrected before screwing, so that they can be precisely matched with the screwing assembly 5 and screwed in the corresponding screw holes.

[0046] The pressing assembly 4 is used to press the first workpiece and the second workpiece in alignment. Since the first workpiece and the second workpiece will bear a certain pressure when screwing the corresponding screw holes of the first workpiece and the second workpiece, the second workpiece located above is likely to partially warp or the overall alignment will have a slight displacement, resulting in missed screwing, loose screws or screws being only screwed into one of the workpieces. Therefore, in this embodiment, the clamping assembly 4 is added to press the first workpiece and the second workpiece before screwing to avoid the above failures.

[0047] The screw driving assembly 5 is used to screw and connect the pressed first workpiece and the second workpiece at a set position. That is, the screw driving assembly 5 is used to accurately align and drive screws into the aligned screw holes on the first workpiece and the second workpiece, and finally lock and fix the two.

[0048] In order to improve the efficiency of screwing, the screw driving assembly 5 can be provided with two or more groups, and the setting positions can be flexibly selected according to actual needs.

[0049] Please refer to again Figures 2 to 5 , the lifting assembly 2 includes: a lifting bracket 21, at least one group of lifting units connected to the lifting bracket 21, and each lifting unit includes a lifting power member 23 and a lifting support plate 24 connected to the moving end of the lifting power member 23.

[0050] Among them, the lifting support plate 24 includes: a horizontal support plate 241 and a side plate 242 vertically bent from one side edge of the horizontal support plate 241.

[0051] The lifting bracket 21 is a support frame fixedly connected by profiles. At the bottom of the support feet of the lifting bracket 21, there is also a fixing plate 22. Screws are passed through the fixing plate 22 to integrally fix and connect the lifting assembly 2 to the base or the factory floor.

[0052] In this embodiment, two groups of lifting units are provided. Both groups of lifting units are arranged on the cross bar of the lifting bracket 21, and the two are synchronously controlled to perform lifting actions to vertically lift the first workpiece and the second workpiece to a set height.

[0053] In this embodiment, the lifting power member 23 is a cylinder. In other embodiments, the lifting power member 23 can also adopt power units such as linear modules, lead screw modules, electric cylinders, and servo drives.

[0054] Please refer to again Figures 6 to 9 , the positioning assembly 3 includes: a positioning bracket 31, a lifting power member 33 connected to the positioning bracket 31, a horizontal power member 35 connected to the moving end of the lifting power member 33, and a positioning plate 36 connected to the moving end of the horizontal power member 35.

[0055] The positioning bracket 31 is a support frame fixedly connected by profiles, and a fixed bottom plate 32 is further provided at the bottom of its support feet. Through this fixed bottom plate 32, the positioning assembly 3 can be integrally connected to the equipment base or the factory floor.

[0056] A connecting member 34 is further provided at the moving end of the lifting power member 33, and the housing of the horizontal power member 35 is fixedly connected to this connecting member 34. The length direction of the positioning plate 36 is arranged in the horizontal direction and is used to horizontally push the first workpiece together with the jacking assembly 2 to complete accurate positioning.

[0057] Similarly, both the lifting power member 33 and the horizontal power member 35 adopt cylinders. In other embodiments, linear modules, lead screw modules, electric cylinders, servo drives and other power units can also be selected.

[0058] Please refer to again Figure 12 , the positioning assembly 4 further includes a process support plate 300 provided at the bottoms of the first workpiece and the second workpiece and a correction driving member 32. Two vertically distributed positioning side plates 301 are provided on the process support plate 300. One of the positioning side plates is arranged in alignment with the positioning plate 36, specifically in parallel, and the correction driving member 32 is arranged in alignment with the other positioning side plate. The process support plate 300 is used to carry the first workpiece and the second workpiece during transfer in each process. The two mutually perpendicular positioning side plates 301 respectively cooperate with the controllably moving positioning plate 36 and the correction driving member 32 to achieve two-way positioning of the first workpiece and the second workpiece in the X direction and the Y direction in the horizontal plane. The X direction and the Y direction refer to two mutually perpendicular directions in the Cartesian coordinate system. The bearing surface of the process support plate 300 is a horizontal plane. Therefore, after positioning the first workpiece and the second workpiece in the X direction and the Y direction, accurate positioning of the first workpiece and the second workpiece in the three-dimensional direction can be completed. The correction driving member 32 is a cylinder.

[0059] Please refer to again Figures 10 to 12 , the pressing assembly 4 includes: a gantry 41, and at least one set of pressing units connected to the gantry 41. The pressing units perform lifting actions to press the first workpiece and the second workpiece in alignment.

[0060] Among them, the pressing unit includes: an assembly plate 44, a pressing power member 42 connected to the assembly plate 44, and a pressing plate 43 connected to the moving end of the pressing power member 42. In this embodiment, the pressing plate 43 is controlled by the pressing power member 42 to perform a lifting action in the vertical direction, so as to press the first workpiece and the second workpiece in the vertical direction.

[0061] In this embodiment, there are two sets of pressing units, and the two sets of pressing units are controlled to lift synchronously to complete the pressing of the first workpiece and the second workpiece.

[0062] Since the external dimensions of different air conditioners are different, in order to improve the compatibility of the device, at least two strip holes 441 are provided on the assembly plate 44, and the assembly plate 44 is adjustably connected to the gantry 41 through screws passing through the strip holes 441. Specifically, by adjusting the front-back docking position of the assembly plate 44 and the gantry 41 in the horizontal direction, the position of the pressing power member 42 can be adjusted, and correspondingly, the position of the pressing plate 43 will change.

[0063] To further adjust the pressing action stroke of the pressing assembly 4, the gantry 41 includes gantry feet 411 and a horizontal support rod 412 horizontally connected to the gantry feet 411. Adjusting plates 413 are respectively provided on each foot 411 of the gantry 41, and strip adjustment holes 4131 are provided on the adjusting plates 413, and screws are inserted through the strip adjustment holes 4131.

[0064] As Figure 12 shown, the adjusting plate 413 is also connected to the conveyor line by screws. When the pressing stroke needs to be adjusted, loosen the screws, adjust the gantry 41 to an appropriate height along the strip adjustment hole 4131, and then tighten the screws again to complete the height adjustment of the pressing assembly 4.

[0065] Please refer to Figure 1 again. The automatic screw fixing device 100 further includes a chain conveyor line 1 for conveying the first workpiece and the second workpiece. The lifting assembly 2 and the positioning assembly 3 are arranged below the chain conveyor line 1, and the pressing assembly 4 is arranged above the chain conveyor line 1. The screw driving assembly 5 is arranged on both sides of the chain conveyor line 1. Of course, it can be understood that in other embodiments, the relative positional relationship between the chain conveyor line 1, the lifting assembly 2, the positioning assembly 3, the pressing assembly 4, and the screw driving assembly 5 can be changed according to actual needs.

[0066] The screw driving assembly 5 is an existing mature functional unit, which includes a vibrating screw feeding module, a manipulator, and an electric screwdriver. The manipulator controls the vibrating screw feeding module and the electric screwdriver to move to the screw driving position, and then the electric screwdriver aligns and drives the screw into the screw hole.

[0067] It should be noted that the automatic screw fixing device 100 of this embodiment further includes a controller, such as an industrial computer, a PLC, etc., which is used to control each component to execute according to a preset logic according to the screw driving process.

[0068] Next, again in combination with Figures 1 to 12 the following, briefly describe the working process of the automatic screw fixing device 100 of this embodiment:

[0069] Step 1: The chain conveyor line 1 transports the air conditioner outdoor unit 200 placed on the process pallet 300 above the lifting assembly 2, and its conveying position is detected by a position sensor.

[0070] Step 2: Control the lifting assembly 2 to perform a lifting action, lift the process pallet 300 and the air conditioner outdoor unit 200 together, so that they are separated from the chain conveyor line 1 and reach the set height.

[0071] Step 3: Control the positioning assembly 3 to act. The positioning assembly 3 first performs a rising action, and then performs a horizontal extending action, pushing the air conditioner outdoor unit 200 forward in the horizontal direction until one side of the air conditioner outdoor unit 200 abuts against one of the positioning side plates 301. Then control the correction driving member 32 to act, and continue to push the air conditioner outdoor unit 200 closer to the other positioning side plate 301, so as to complete the accurate positioning of the air conditioner outdoor unit 200.

[0072] Step 4: Control the pressing assembly 4 to start. The pressing power member 42 drives the pressing plate 43 to descend until the top cover 202 and the outdoor unit main body 201 are pressed tightly.

[0073] Step 5: Control the screw driving assembly 5 to start, and drive screws into the connection holes at the corresponding positions to complete the locking and fixing of the screws between the top cover 202 and the outdoor unit main body 201.

[0074] The device for automatically fixing screws in this embodiment realizes the process of aligning and screwing and fixing two workpieces through the cooperation of the lifting assembly, the positioning assembly and the clamping assembly with the conveyor line, which is fully automated, has high processing efficiency, reduces the labor intensity of workers and the errors of manual operation.

[0075] The above only further illustrates the technical content of the present invention with embodiments to make it easier for readers to understand, but it does not mean that the implementation manners of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. An automatic screw fixing device, characterized in that, Including: A jacking assembly, a positioning assembly, a pressing assembly, and a screw driving assembly; The jacking assembly is used to vertically jack up the first workpiece and the second workpiece in the assembled state from the conveyor line to a set height; The positioning assembly is used to position the jacked-up first workpiece and second workpiece; The pressing assembly is used to press the positioned first workpiece and second workpiece in alignment; The screw driving assembly is used to screw-fix the pressed first workpiece and second workpiece at a set position.

2. The device for automatically fixing screws according to claim 1, wherein, The jacking assembly includes: a jacking bracket, at least one set of jacking units connected to the jacking bracket, and each jacking unit includes a jacking power component and a jacking support plate connected to the moving end of the jacking power component.

3. The device for automatically fixing screws according to claim 2, characterized in that, The jacking support plate includes: a horizontal support plate and a side plate vertically bent out from one side edge of the horizontal support plate.

4. The device for automatically fixing screws according to claim 1, characterized in that, The positioning assembly includes: a positioning bracket, a lifting power component connected to the positioning bracket, a horizontal power component connected to the moving end of the lifting power component, and a positioning plate connected to the moving end of the horizontal power component.

5. The device for automatically fixing screws according to claim 4, characterized in that, The positioning assembly further includes a process support plate and a correction driving component arranged at the bottoms of the first workpiece and the second workpiece. Two vertically distributed positioning side plates are provided on the process support plate. One of the positioning side plates is arranged in alignment with the positioning plate, and the correction driving component is arranged in alignment with the other positioning side plate.

6. The device for automatically fixing screws according to claim 1, characterized in that, The pressing assembly includes: a gantry and at least one set of pressing units connected to the gantry, and each pressing unit performs a lifting action to press the first workpiece and the second workpiece in alignment.

7. The device for automatically fixing screws according to claim 6, characterized in that, Each pressing unit includes: a connecting plate, a pressing power component connected to the connecting plate, and a pressing plate connected to the moving end of the pressing power component.

8. The device for automatically fixing screws according to claim 7, characterized in that, At least two strip holes are provided on the connecting plate, and the connecting plate is adjustably connected to the gantry through screws passing through the strip holes.

9. The device for automatically fixing screws according to claim 8, characterized in that, Adjusting plates are respectively provided on each leg of the gantry, and strip adjusting holes are provided on the adjusting plates, and screws are passed through the strip adjusting holes.

10. The automatic screw fixing device according to any one of claims 1 to 9, characterized in that, The automatic screw-fixing device further includes a chain conveyor line for conveying the first workpiece and the second workpiece. The jacking assembly and the positioning assembly are arranged below the chain conveyor line, and the pressing assembly is arranged above the chain conveyor line.

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