Lifting mechanism, transfer mechanism and printing equipment

Abstract

The utility model discloses a lifting mechanism which comprises an installation platform, a scissor fork device, a driving assembly and a grabbing device. The two sets of shear fork devices are arranged at the two ends of the mounting platform correspondingly, one end of each shear fork device is fixedly connected with the mounting platform, the other end of each shear fork device is fixedly connected with the grabbing device, and the shear fork devices control the lifting stability of the printing medium through unfolding or folding; the driving assembly is arranged on the mounting platform and connected with the grabbing device through a rope, and the driving assembly is used for driving the grabbing device to move in the height direction; the grabbing device is used for grabbing a printing medium. According to the technical scheme, the printing medium can be effectively prevented from being indented or damaged in the transferring process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of lifting mechanism, transfer mechanism and printing equipment. BACKGROUND

[0002] Large-format printing technology has been widely used in the field of advertising signs, building materials decoration, industrial material pretreatment, etc., printing medium is stacked in one place by transport device to be transferred to printing equipment for printing, the present application discloses a kind of negative pressure transfer mechanism and printing equipment, its patent application number is CN202521605480.4, the technical scheme is transferred to printing medium by the way of swing arm, but this transfer mode is prone to cause bruise to printing medium, leading to obvious indentation or damage of printing medium, so that printing medium does not meet production standards after printing. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a kind of lifting mechanism, transfer mechanism and printing equipment to avoid indentation or damage in the printing medium transfer process.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of lifting mechanism, including installation platform, scissor device, drive assembly, grabbing device;The scissor device is provided with two groups and is respectively arranged at the two ends of installation platform, one end of the scissor device is fixedly connected with installation platform, and the other end is fixedly connected with grabbing device, and the stability when printing medium is lifted is controlled by the scissor device through unfolding or folding;The drive assembly is arranged on installation platform and is connected with grabbing device by rope, and the drive assembly is used to drive the activity of grabbing device in height direction;The grabbing device is used to grab printing medium.

[0005] As a further improvement of the utility model, the drive assembly includes a transmission assembly fixedly connected to the installation platform, and a rotating shaft mounted on the transmission assembly, the installation platform is provided with a support seat for supporting the rotation of the rotating shaft, and the rope drives the rotating shaft to rotate through the transmission assembly to control the activity of the grabbing device in the height direction.

[0006] As a further improvement of the utility model, the rotating shaft is provided with a winding wheel, the diameter of the winding wheel is greater than the diameter of the rotating shaft, and the rope is wound on the winding wheel, and the free end of the rope is fixedly connected with the grabbing device.

[0007] As a further improvement of the utility model, the winding wheel is provided with at least two groups, each winding wheel is provided with a rope, and the two winding wheels are coaxially mounted on the rotating shaft and are respectively mounted on the rotating shaft close to the scissor device.

[0008] As a further improvement of this utility model, the installation platform is provided with a cover plate above the reel, and the cover plate is provided with a limiting block for limiting the rope winding height.

[0009] As a further improvement of this utility model, the cover plate is provided with limiting plates at both ends corresponding to the axial direction of the reel, and the limiting plates are used to limit the range of axial displacement of the rope on the reel.

[0010] As a further improvement of this utility model, the transmission assembly includes a speed reducer and a drive motor that provides power to the speed reducer. The rotating shaft is mounted on the speed reducer, and the speed reducer and the drive motor are supported on the mounting platform by a bracket plate to reduce the burden on the rotating shaft.

[0011] As a further improvement of this utility model, the gripping device includes a frame, a number of negative pressure suction cups arranged on the frame, and the scissor device is fixedly connected to the frame.

[0012] A transfer mechanism includes the aforementioned lifting mechanism and a horizontal drive component. The mounting platform is connected to the horizontal drive component and is driven to move horizontally. The printing medium is controlled in height by the lifting mechanism and then moved horizontally by the horizontal drive component, thereby transporting the transfer object.

[0013] A printing device includes the aforementioned transfer mechanism and a printing platform, wherein the printing platform is used to receive the printing medium transferred by the transfer mechanism and to print the printing medium.

[0014] The beneficial effects of this utility model are: it can effectively prevent printing media from being dented or damaged during transportation. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Fig. 2 This is a schematic diagram of the installation of the drive component according to an embodiment of the present utility model;

[0017] Fig. 3 This is a schematic diagram of the installation of the reel in an embodiment of the present invention.

[0018] Reference numerals: 1. Mounting platform; 2. Scissor lift device; 3. Drive assembly; 31. Transmission assembly; 32. Shaft; 33. Roller; 34. Reducer; 35. Drive motor; 36. Support plate; 4. Gripping device; 41. Frame; 42. Negative pressure suction cup; 43. Lifting ring; 5. Rope; 6. Cover plate; 7. Limiting block; 8. Limiting plate. Detailed Implementation

[0019] The utility model will make further detailed below combining with the embodiment shown in the drawings.

[0020] Referring to Figs. 1-3 As shown in the figure, a lifting mechanism, including installation platform 1, scissor device 2, drive assembly 3, grabbing device 4, scissor device 2 is equipped with two groups and is arranged at the both ends of installation platform 1 respectively, one end of scissor device 2 is fixedly connected with installation platform 1, and the other end is fixedly connected with grabbing device 4, and scissor device 2 controls the stability when lifting printing medium through unfolding or folding, drive assembly 3 is arranged on installation platform 1 and is connected with grabbing device 4 through rope 5, and drive assembly 3 is used to drive the activity of grabbing device 4 in the height direction, and grabbing device 4 is used to grab printing medium.

[0021] In the embodiment, two groups of scissor device 2 are installed on installation platform 1 and correspond to the two ends of grabbing device 4, so that grabbing device 4 can be stable in the process of lifting, drive assembly 3 is used to control the winding and unwinding of rope 5, one end of rope 5 is woundly connected with drive assembly 3, and the other end is fixed with grabbing device 4, when lifting printing medium is needed, drive assembly 3 works to realize the winding or release of rope 5, and rope 5 pulls grabbing device 4 to rise or descend, and scissor device 2 unfolds or folds synchronously with the movement of grabbing device 4, two groups of scissor device 2 are stressed from both sides synchronously, can effectively offset the tilting force generated by the weight of grabbing device 4 and printing medium, ensure that printing medium is in horizontal state, drive assembly 3 can accurately control the lifting height of grabbing device 4 by the driving mode of rope 5, meet the transfer needs of different heights, and when grabbing device 4 is lowered to grab printing medium by the driving mode of rope 5, printing medium will only be subjected to the pressure of the weight of grabbing device 4, even if drive assembly 3 is excessively payed out, will not produce additional impact force to printing medium, compared with the transfer mode of swing arm in the background art, can avoid the impact force brought by mechanical operation, thereby avoiding damage to printing medium.

[0022] In an alternative, the drive assembly 3 of the above lifting mechanism is optimized, the drive assembly 3 includes a transmission assembly 31 fixedly connected to the installation platform 1, a rotating shaft 32 installed on the transmission assembly 31, the installation platform 1 is provided with a support seat for supporting the rotation of the rotating shaft 32, and the rope 5 drives the rotating shaft 32 to rotate through the transmission assembly 31 to control the activity of the grabbing device 4 in the height direction.

[0023] The support seat is fixedly connected to the mounting platform 1 by welding or a connecting piece, and in this embodiment, two support seats are provided, and the two ends of the rotating shaft 32 are respectively arranged in the two support seats, and the rotating shaft 32 is connected with the support seat through a bearing, and when the transmission assembly 31 works, the rotating shaft 32 rotates to realize winding or releasing of the rope 5, thereby controlling lifting of the grabbing device 4; the support seat can position the rotating shaft 32 at both ends, avoid bending deformation of the rotating shaft 32 due to its own weight or the tension of the rope 5, improve the smoothness of rotation of the rotating shaft 32, and reduce shaking during lifting.

[0024] Further optimization can be performed in the following manner: the rotating shaft 32 is provided with a winding wheel 33, the diameter of the winding wheel 33 is greater than the diameter of the rotating shaft 32, and the rope 5 is wound on the winding wheel 33, and the free end of the rope 5 is fixedly connected with the grabbing device 4.

[0025] In this embodiment, the winding wheel 33 is connected with the rotating shaft 32 by a key to ensure that the winding wheel 33 rotates synchronously with the rotating shaft 32, and when the rotating shaft 32 drives the winding wheel 33 to rotate, the winding wheel 33 guides the rope 5 to be wound or released, and compared with the rope 5 being directly wound on the rotating shaft 32, the diameter of the winding wheel 33 can increase the length of one winding of the rope 5, thereby improving the efficiency of lifting of the printing medium.

[0026] In order to balance the force on both sides of the grabbing device 4 and avoid tilting during lifting due to excessive tension of the rope 5 on one side, in some options, the winding wheel 33 can be optimized, and the winding wheel 33 is provided with at least two groups, each group of winding wheels 33 is provided with the rope 5, and the two winding wheels 33 are coaxially installed on the rotating shaft 32 and are respectively installed at positions close to the scissors devices 2.

[0027] The two winding wheels 33 are installed on the rotating shaft 32 and are respectively close to the two groups of scissors devices 2, and when the rotating shaft 32 rotates, the two winding wheels 33 synchronously wind or release the rope 5, so that the force on both sides of the grabbing device 4 is balanced, and tilting of the grabbing device 4 or deviation of the printing medium due to excessive unilateral tension is avoided, thereby further improving the stability during lifting.

[0028] In some options, the mounting platform 1 is provided with a cover plate 6 above the winding wheel 33, and the cover plate 6 is provided with a limiting block 7 for limiting the winding height of the rope 5.

[0029] The lower surface of the cover plate 6 is spaced apart from the upper surface of the winding wheel 33, and the limiting block 7 arranged on the cover plate 6 can be fixed through a clamping groove or a connecting piece. When the rope 5 is wound on the winding wheel 33, the height of the rope 5 gradually rises with the increase of the winding turns. When the height of the rope 5 approaches the lower surface of the limiting block 7, the limiting block 7 blocks the rope 5 from continuing to rise, so as to prevent the rope 5 from being wound too high to exceed the range of the winding wheel 33, and to prevent the rope 5 from being pressed, knotted or separated from the winding wheel 33, so as to ensure the order of the winding and unwinding of the rope 5, reduce the wear of the rope 5 and prolong the service life.

[0030] In order to further limit the axial deviation of the rope 5 on the winding wheel 33 and prevent the rope 5 from sliding from the axial ends of the winding wheel 33, the following optimization can be made on the basis of the above-mentioned cover plate 6. The cover plate 6 is provided with limiting plates 8 corresponding to the axial ends of the winding wheel 33, and the limiting plates 8 are used to limit the axial deviation range of the rope 5 on the winding wheel 33,

[0031] The limiting plates 8 are rectangular plates perpendicular to the cover plate 6 and are integrally formed with or fixed on the cover plate 6 by welding. The two limiting plates 8 are respectively located at the axial ends of the winding wheel 33. The limiting plates 8 are arranged to prevent the rope 5 from sliding from the axial ends of the winding wheel 33 and causing the imbalance of the grabbing device 4, so as to ensure the normal operation of the lifting mechanism.

[0032] In order to improve the power output stability of the transmission assembly 31 and reduce the load of the rotating shaft 32, the structure of the transmission assembly 31 can be optimized on the basis of the above-mentioned driving assembly 3 or the lifting mechanism of the winding wheel 33. The transmission assembly 31 includes a speed reducer 34 and a driving motor 35 for providing power for the speed reducer 34. The rotating shaft 32 is installed on the speed reducer 34. The speed reducer 34 and the driving motor 35 are supported on the mounting platform 1 through a support plate 36, so as to reduce the load on the rotating shaft 32.

[0033] The support plate 36 stably supports the speed reducer 34 and the driving motor 35, so that the weight of the speed reducer 34 and the driving motor 35 is borne by the support plate 36 instead of being transmitted to the mounting platform 1 through the rotating shaft 32, thereby reducing the load of the rotating shaft 32, avoiding deformation of the rotating shaft 32 caused by long-term bearing of additional weight, and ensuring the transmission accuracy and service life of the rotating shaft 32.

[0034] In some options, the grabbing device 4 includes a frame 41 and a plurality of negative pressure suction cups 42 arranged on the frame 41. The scissor device 2 is fixedly connected to the frame 41.

[0035] The frame 41 is made of aluminum alloy material and has the characteristics of light weight and high strength. The scissor device 2 is fixed on the frame 41 by bolts and corresponds to the position of the scissor device 2 on the mounting platform 1. A plurality of negative pressure suction cups 42 are uniformly arranged on the lower surface of the frame 41. The top of each negative pressure suction cup 42 is connected to an air pipe through an air pipe joint. The printing medium is grabbed and adsorbed by the negative pressure suction cups 42.

[0036] In some options, the frame 41 is provided with a lifting ring 43 for connecting with the rope 5, the lifting ring 43 is detachably mounted on the frame 41, and the lifting ring 43 is arranged to facilitate the cooperation with the position of the rope 5.

[0037] A transfer mechanism, comprising the lifting mechanism, the horizontal driving assembly 3, the mounting platform 1 is connected with the horizontal driving assembly 3, and is driven to move in the horizontal direction by the horizontal driving assembly 3, the printing medium is controlled in the height direction by the lifting mechanism, and then moves in the horizontal direction by the horizontal driving assembly 3, so that the transfer object is transported, and in actual application, the horizontal driving assembly 3 can adopt a linear guide rail, a sliding block slidingly matched with the linear guide rail, and a synchronous belt transmission mechanism for driving the sliding block to move, the mounting platform 1 is fixedly connected with the sliding block, so that the printing medium moves in the horizontal direction.

[0038] A printing device, comprising the transfer mechanism, and a printing platform, the printing platform is used for receiving the printing medium transferred by the transfer mechanism, and printing the printing medium.

[0039] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme belonging to the idea of the present application is within the protection scope of the present application. It should be pointed out that for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A lifting mechanism, characterized in that The installation platform, the scissor device, the driving assembly and the grabbing device are included. The scissor device is provided with two groups and is arranged at two ends of the installation platform respectively. The driving assembly is arranged on the installation platform and is connected with the grabbing device through a rope. The grabbing device is used for grabbing the printing medium.

2. The lifting mechanism of claim 1, wherein, The driving assembly includes a transmission assembly fixedly connected to the installation platform and a rotating shaft arranged on the transmission assembly.

3. The lifting mechanism of claim 2, wherein, The installation platform is provided with a support seat for supporting the rotation of the rotating shaft.

4. The lifting mechanism of claim 3, wherein, The rope is wound on the winding wheel and the free end of the rope is fixedly connected to the grabbing device.

5. A lifting mechanism according to claim 3 or 4, characterised in that, The rotating shaft is provided with a winding wheel.

6. The lifting mechanism of claim 5, wherein, The installation platform is provided with a cover plate corresponding to the winding wheel.

7. The lift mechanism of claim 2, wherein, The cover plate is provided with a limiting block for limiting the winding height of the rope.

8. The lift mechanism of claim 1, wherein, The cover plate is provided with a limiting plate corresponding to the axial direction of the winding wheel.

9. A transfer mechanism, characterized by, The transmission assembly includes a speed reducer and a driving motor for providing power for the speed reducer.

10. A printing device, characterized by, The rotating shaft is arranged on the speed reducer. The speed reducer and the driving motor are supported on the installation platform through a support plate to reduce the burden on the rotating shaft. The grabbing device includes a frame and a plurality of negative pressure suction cups arranged on the frame. The scissor device is fixedly connected to the frame. The installation platform is connected with the horizontal driving assembly and is driven to move in the horizontal direction through the horizontal driving assembly. The printing medium is controlled in the height direction through the lifting mechanism and is moved in the horizontal direction through the horizontal driving assembly to transport the transfer object. The printing platform is used for receiving the printing medium transferred by the transfer mechanism and printing the printing medium.

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