A material roll auxiliary device for loading and unloading materials and a double-sided inkjet printer

Abstract

This application relates to the field of inkjet printing equipment technology, and in particular to a material roll auxiliary device for loading and unloading and a double-sided inkjet printer. It includes a frame, on which a support and guiding mechanism and a material roll drive mechanism are mounted. The material roll drive mechanism includes a sliding seat slidably mounted on the support and guiding mechanism, a rotating roller rotating on the sliding seat, an air-expanding roller coaxially fixed to one end of the rotating roller, a first drive assembly mounted on the sliding seat, and a dynamic support assembly mounted on the sliding seat. Two sets of material roll drive mechanisms are provided, and the two sets are positioned opposite each other at both ends of the material roll. By using the support and guiding mechanism and the dynamic support assembly in conjunction, this application simplifies and facilitates the loading process compared to existing loading methods, while also reducing labor costs.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular to a material roll auxiliary device for loading and unloading materials and a double-sided printing machine. Background Art

[0002] A jet printer usually includes three parts: a material unwinding mechanism, a rewinding mechanism and a printing mechanism. The structures and installation methods of the material unwinding mechanism and the rewinding mechanism are similar, that is, both use an expansion roller to connect the material roll. For the material unwinding or rewinding mechanism, the existing loading method is usually that the staff first inserts the expansion roller on the material roll, and then moves the expansion roller with the material roll as a whole to the vicinity of the frame. The frame is provided with a corresponding support port for installing the expansion roller, and then the expansion roller is placed in the support port to complete the installation.

[0003] In the above-mentioned loading process, since the air expansion roller is large in size and heavy in weight, at least two people are usually required to cooperate in the installation and subsequent transportation of the material roll, especially for large vertical double-sided inkjet printers, whose unwinding mechanism and rewinding mechanism are staggered in the upper and lower positions, and the installation position height of the unwinding mechanism or the rewinding mechanism on the frame may be too high. It is usually necessary to use an overhead lifting tool to lift the air expansion roller with the material roll onto the frame, and the staff guides the air expansion roller to descend until it is installed in the corresponding support opening on the frame.

[0004] However, in actual applications, when the overall size and weight of the material roll to be loaded are large, when loading or unloading, the above-mentioned loading method is adopted. In the process of inserting the air roller into the material roll, multiple workers are required to cooperate, and the installation process is more laborious. In the hoisting process after the installation is completed, the weight of the material roll plus the weight of the air roller will also make it more difficult for subsequent workers to guide the air roller to install it into the support port, resulting in high labor costs and low loading efficiency in the overall loading process. Summary of the invention

[0005] In order to solve the problem that the existing loading method requires high labor costs and the loading process is relatively laborious, which easily leads to low loading efficiency, the present application provides a material roll auxiliary device for loading and unloading materials.

[0006] In a first aspect, the present application provides a material roll auxiliary device for loading and unloading materials, which adopts the following technical solution:

[0007] A material roll auxiliary device for loading and unloading materials comprises a frame, on which is provided a supporting and guiding mechanism for supporting and guiding the rotation of the material roll, and a material roll driving mechanism for driving the material roll to rotate. The material roll driving mechanism comprises a sliding seat slidingly arranged on the supporting and guiding mechanism, a rotating roller rotating on the sliding seat, an expansion roller coaxially fixed to one end of the rotating roller, a first driving component arranged on the sliding seat for driving the rotating roller to rotate, and a dynamic supporting component arranged on the sliding seat for balancing the gravity of the expansion roller. The material roll driving mechanism comprises two groups, and the two groups of the material roll driving mechanisms are relatively arranged at the two ends of the material roll.

[0008] In the existing method, it is necessary for multiple workers to lift the expansion roller and the material roll respectively, align the axis of the expansion roller with the material roll, and then cooperate to insert the expansion roller into the material roll. For the expansion roller or material roll with a larger size, the overall operation is more laborious, and when the expansion roller is subsequently guided to be installed on the frame, the weight of the expansion roller and the material roll is superimposed, which is not conducive to the operation. Therefore, by adopting the above technical solution, when in use, the material roll can be first transported to the vicinity of the frame, and the material roll can be directly placed on the supporting guide mechanism through the external overhead lifting equipment, and then The dynamic support component is then used to assist the staff in adjusting the axis of the inflation roller to coincide with the axis of the material roll. After that, the inflation roller can be slid into the material roll through the sliding sliding seat. Finally, the staff inflates the inflation roller so that the surface of the inflation roller protrudes and abuts against the inner wall of the material roll. After that, the first driving component can be used to drive the rotating roller to rotate, thereby driving the inflation roller to rotate, and then realizing the winding or unwinding of the material roll. The overall operation is simple and convenient, and there is no need for multiple people to cooperate in loading, thereby achieving the purpose of improving loading efficiency and saving labor costs.

[0009] Preferably, the supporting and guiding mechanism includes two connecting plates spaced apart on the frame, a transverse plate arranged between the two connecting plates, and a supporting roller arranged between the two connecting plates, one end of the connecting plate is fixed to the frame, the other end of the connecting plate is provided with an embedding groove, both ends of the transverse plate are respectively embedded in the embedding groove of a connecting plate, two supporting rollers are provided, and the two supporting rollers are respectively located on one side of the transverse plate, one end of the supporting roller is rotatably connected to one connecting plate, and the other end of the supporting roller is rotatably connected to the other connecting plate, a placement space for placing material rolls is formed between the two supporting rollers, the sliding seat is slidably arranged on the transverse plate, the expansion roller is located in the placement space, and a supporting component for supporting the supporting roller is also arranged on the transverse plate.

[0010] By adopting the above technical scheme, when in use, after the staff transports the material roll to the vicinity of the frame, the material roll can be hoisted above the two support rollers by means of an overhead crane, and then the staff guides the material roll into the placement space, and makes the outer wall of the material roll respectively abut against the outer walls of the two support rollers. At the same time, since the support roller rotates as a whole on the connecting plate, the rotation of the material roll is facilitated; in addition, the support roller is supported by the support assembly, thereby improving the overall support stability of the support and guiding mechanism for the material roll.

[0011] Preferably, the supporting assembly includes a mounting seat fixed on the transverse plate, and two driven rollers rotating on the mounting seat, the two driven rollers are arranged at intervals, the driven rollers are parallel to the axis of the supporting roller, the supporting roller is located between the two driven rollers, and the outer wall of the supporting roller abuts against the outer walls of the two driven rollers.

[0012] By adopting the above technical solution, the support of the support roller is achieved through the cooperation of two driven rollers. In addition, the driven roller rotates on the mounting seat, which avoids the driven roller affecting the rotation of the support roller. The use is simple and convenient.

[0013] Preferably, the dynamic support assembly includes a fixed frame fixed on the sliding seat, a sliding frame slidingly arranged on the fixed frame, a balancing cylinder arranged on the sliding seat, and a pressure regulating valve for adjusting the pressure in the balancing cylinder. The cylinder body of the balancing cylinder is fixed on the sliding frame, the end of the balancing cylinder piston rod is fixed on the fixed frame, the first drive assembly, the pressure regulating valve, the distance sensor and the proportional valve are all installed on the sliding frame, the rotating roller is rotatably connected to the sliding frame, and the expansion roller is coaxially fixedly connected to the end of the rotating roller away from the first drive assembly.

[0014] By adopting the above technical scheme, when in use, the pressure of the balancing cylinder is first adjusted by the pressure regulating valve to offset the weight balance of the pressure of the balancing cylinder and the overall weight of the inflation roller and the dynamic support assembly, and at the same time, the air outlet of the balancing cylinder is emptied. When the staff lifts the sliding frame, the pressure regulating valve can be used to control the pressure increase at the air inlet end of the balancing cylinder, so that the piston rod of the balancing cylinder is extended, so that the staff can use less force to lift the inflation roller to align with the material roll; when the staff presses the sliding frame, the pressure regulating valve controls the pressure relief at the air inlet end of the balancing cylinder, so that the piston rod of the balancing cylinder is retracted, and the inflation roller can be moved down; then, the inflation roller is inserted into the material roll by moving the sliding seat, and the staff inflates the inflation roller so that the outer side of the inflation roller is pressed against the inner wall of the material roll, thereby forming support for the material roll, and at the same time, it is convenient for the first drive assembly to drive the material roll to unwind, and the overall use is more convenient for the staff to load the material; and.

[0015] Preferably, the sliding frame is provided with a distance sensor for monitoring the outer diameter of the material roll, and a proportional valve for controlling the pressure regulating valve to dynamically adjust the pressure in the balance cylinder. The frame is provided with a PLC device, which is used to receive and process the signal transmitted by the distance sensor and control the proportional valve switch.

[0016] By adopting the above technical solution, when in use, during the unwinding or winding process, since the outer diameter of the material roll is constantly changing, the distance sensor, the proportional valve and the PLC device can be used in combination to achieve dynamic adjustment of the height of the material roll, that is, the diameter of the material roll is detected by the distance sensor, and the detection structure is transmitted to the PLC device in the form of an electrical signal. The PLC device receives and processes the electrical signal, thereby calculating the weight of the material roll according to the detection result, and then transmits it to the proportional valve in the form of an electrical signal, so that the pressure regulating valve is controlled by the proportional valve to automatically adjust the pressure in the balancing cylinder, so that the height of the axis of the air expansion roller will change dynamically while the material roll is continuously wound or unwound, thereby ensuring that the outer wall of the material roll is always in contact with the outer wall of the support roller, thereby ensuring the stability of the material roll during the winding or unwinding process.

[0017] Preferably, a positioning bolt is also provided on the sliding seat, and a positioning hole is opened on the transverse plate. There are a plurality of positioning holes, and the plurality of positioning holes are evenly spaced and distributed along the length direction of the transverse plate. One end of the positioning bolt passes through the sliding seat and is threadedly connected to one of the positioning holes.

[0018] By adopting the above technical solution, when in use, after the sliding seat is slid to the specified position, that is, the air expansion roller is inserted into the material roll, the positioning bolt can be screwed to make the positioning bolt inserted into the positioning hole at the corresponding position, so as to achieve the positioning of the sliding seat, thereby avoiding the sliding seat from moving during the unwinding process and affecting the unwinding quality.

[0019] Preferably, the frame is also provided with a hoisting assembly for hoisting the material roll onto the supporting and guiding mechanism.

[0020] By adopting the above technical solution, when in use, the material roll is hoisted and transported through the hoisting assembly arranged on the frame, which makes it more convenient to use and improves the overall ease of use of the device.

[0021] Preferably, the lifting assembly includes two groups of first sliders slidably arranged on the frame, a second driving assembly arranged on the frame for driving the first slider to slide along the length direction of the frame, a second slider slidably arranged on the first slider, a third driving assembly arranged on the first slider for driving the second slider to slide along the width direction of the frame, and an electric hoist installed on the end of the second slider away from the first slider, and the electric hoist is used for lifting the material roll.

[0022] By adopting the above technical solution, the position of the first slider is adjusted by the second driving component during use to adapt to the material rolls placed at different positions, and then the second slider is driven to slide by the third driving component to extend the electric hoist out of the frame. After that, the two ends of the material roll can be hoisted respectively by the two electric hoists, so as to realize the hoisting of material rolls at different positions. The use is simple and convenient, and the labor cost is effectively saved. In addition, since the frame is relatively high as a whole, when the material roll is placed on the material roll driving mechanism located above the frame, the staff can move one end of the material roll through the auxiliary feeding component and wrap it around the top of the frame, so as to facilitate subsequent printing.

[0023] In the second aspect, the present application provides a double-sided inkjet printer, which adopts the following technical solution:

[0024] A double-sided inkjet printer also includes a conveying roller mechanism arranged on the frame, the conveying roller mechanism includes a first friction roller, a first guide roller, a first guide roller, a second friction roller, a second guide roller and a second guide roller rotating on the frame, the first friction roller and the second friction roller drive the material to move forward through friction force, the first guide roller, the first guide roller, the second guide roller and the second guide roller are used to guide the moving direction of the material, two second guide rollers are provided, and the two second guide rollers and one second friction roller are distributed in a triangle.

[0025] By adopting the above technical solution, the positions of the two second guide rollers and one second friction roller are coordinated during use, so that the material roll has sufficient tension during the transmission process. At the same time, when the equipment as a whole is used for a long time, the middle part of the second guide roller will inevitably have a slight concave. At this time, the second guide roller in the middle can be supported by the second guide roller below, and the reverse effect of the tension of the material itself on the second guide roller can be combined to avoid the situation where the unwinding quality of the material roll is reduced due to the deformation of the second guide roller in the middle, thereby ensuring the quality of printing.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When in use, the material roll is hoisted and transported to the supporting and guiding mechanism by means of an overhead crane, and then the dynamic supporting assembly is used to assist the staff in adjusting the position of the air expansion roller, thereby facilitating the assembly of the air expansion roller and the material roll. After the assembly is completed, the air expansion roller can be driven to rotate by the first driving assembly to drive the material roll to rotate, thereby realizing the winding or unwinding of the material roll. In addition, during the winding or unwinding process, the height of the air expansion roller is dynamically adjusted by the dynamic supporting assembly to ensure that the material roll is always in contact with the supporting and guiding mechanism, thereby ensuring the quality of the winding or unwinding of the material roll. Compared with the existing method, the overall use is simpler and more convenient, and the unwinding or winding quality is also improved on the premise of improving the efficiency of material replacement and saving labor costs;

[0028] 2. The support and guide mechanism formed by the connecting plate, the cross plate and the two supporting rollers provides a space for the material roll, which facilitates the subsequent insertion of the air expansion roller into the material roll. On the other hand, the connected supporting rollers are rotated to avoid affecting the rotation of the material roll during the unwinding process, making it more convenient to use.

[0029] 3. When in use, the two second guide rollers distributed in a triangle and a second friction roller are used in coordination to increase the tension of the material roll unwinding process, thereby further ensuring the quality of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an axonometric diagram mainly showing the overall structure in the first embodiment of the present application;

[0031] Figure 2 It is a cross-sectional view mainly showing the overall structure in the first embodiment of the present application;

[0032] Figure 3 It is an axonometric diagram mainly showing the structure of the support and guide mechanism in the first embodiment of the present application;

[0033] Figure 4 It is an axonometric diagram mainly showing the structure of the support assembly in the first embodiment of the present application;

[0034] Figure 5 It is an axonometric diagram mainly showing the structure of the material roll driving mechanism in the first embodiment of the present application;

[0035] Figure 6 It is an exploded view mainly showing the structure of the dynamic support assembly in the first embodiment of the present application;

[0036] Figure 7 It is an axonometric diagram mainly showing the structure of the hoisting assembly in the first embodiment of the present application;

[0037] Figure 8 It is a schematic diagram mainly showing the structure of the second driving assembly in the first embodiment of the present application;

[0038] Fig. 9 It is an axonometric diagram mainly showing the structure on the first sliding block in the first embodiment of the present application;

[0039] Fig.10 It is an axonometric diagram mainly showing the structure of the conveying roller mechanism in the first embodiment of the present application;

[0040] Fig.11 This is an axonometric diagram mainly showing the overall structure in the second embodiment of the present application;

[0041] Fig.12 It is an axonometric schematic diagram mainly showing the structure on the sliding frame in the second embodiment of the present application.

[0042] Figure numerals: 1, frame; 2, support and guide mechanism; 21, connecting plate; 22, cross plate; 221, positioning hole; 23, support roller; 24, support assembly; 241, mounting seat; 242, driven roller; 3, material roll driving mechanism; 31, sliding seat; 311, positioning structure; 32, rotating roller; 321, driven gear; 33, expansion roller; 34, first driving assembly; 341, first driving motor; 342, driving gear; 35, dynamic support assembly; 351, fixed frame; 352, sliding frame; 353, balancing cylinder; 354, pressure regulating valve; 355, distance sensor device; 356, proportional valve; 357, handle; 4, lifting assembly; 41, first slider; 42, second drive assembly; 421, connecting rod; 422, second drive motor; 423, first gear; 424, first rack; 43, second slider; 44, third drive assembly; 441, third drive cylinder; 442, first connecting block; 45, electric hoist; 5, conveying roller mechanism; 51, first friction roller; 52, first guide roller; 53, first guide roller; 54, second friction roller; 55, second guide roller; 56, second guide roller; 6, PLC equipment; 7, materials. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1 -Attached Fig.12 This application is described in further detail.

[0044] The embodiments of the present application disclose a material roll auxiliary device for loading and unloading materials and a double-sided inkjet printer.

[0045] Embodiment 1:

[0046] Reference Figure 1 and Figure 2 A material roll auxiliary device for loading and unloading materials comprises a frame 1 placed upright on the ground, the frame 1 is provided with a supporting and guiding mechanism 2 and a material roll driving mechanism 3, wherein the supporting and guiding mechanism 2 is used to place the material roll. In the present embodiment, two groups of supporting and guiding mechanisms 2 are provided, and the two groups of supporting and guiding mechanisms 2 are provided on the same side of the frame 1 and are staggered up and down, wherein the supporting and guiding mechanism 2 located on the upper layer is used to place the material roll to be unwound, and the supporting and guiding mechanism 2 located on the lower layer is used to place the material roll to be wound up, and the number of material roll driving mechanisms 3 is the same as that of the supporting and guiding mechanisms 2 and they are provided one-to-one.

[0047] Reference Figure 2 and Figure 3The supporting and guiding mechanism 2 is composed of a connecting plate 21, a transverse plate 22 and a supporting roller 23, wherein two connecting plates 21 and two supporting rollers 23 are each provided, and the two connecting plates 21 are relatively arranged at the two ends of the transverse plate 22, one end of the connecting plate 21 is fixed to the frame 1 by bolts, and the other end of the connecting plate 21 is provided with an embedding groove, and the two ends of the transverse plate 22 are respectively embedded in the embedding groove on a connecting plate 21, and the two supporting rollers 23 are respectively located on both sides of the transverse plate 22, and the two ends of the supporting rollers 23 are respectively rotatably connected to the connecting plates 21 at the corresponding ends, and a placement space is formed between the two supporting rollers 23, and the material roll driving mechanism 3 is arranged on the transverse plate 22; when in use, the material roll is placed in the placement space, and the outer wall of the material roll is made to abut against the outer walls of the two supporting rollers 23, so as to support the material roll, and at the same time, the supporting rollers 23 rotate on the connecting plate 21, and the rotation of the supporting rollers 23 can be coordinated with the rotation of the material roll, so as to facilitate the unwinding of the material roll.

[0048] Reference Figure 3 and Figure 4 In this embodiment, both side walls of the transverse plate 22 are provided with a plurality of groups of support assemblies 24, and the plurality of groups of support assemblies 24 are evenly spaced along the length direction of the transverse plate 22. The support assemblies 24 include a mounting seat 241 fixed on the transverse plate 22 by bolts, and two driven rollers 242 rotating on the mounting seat 241. The two driven rollers 242 are spaced apart along the width direction of the mounting seat 241. The support roller 23 is located between the two driven rollers 242, and the outer wall of the support roller 23 abuts against the outer walls of the two driven rollers 242. When in use, the support roller 23 is supported by the plurality of groups of driven rollers 242 at the same time, so as to ensure the stability of the support roller 23, and the driven roller 242 rotates on the mounting seat 241, and also provides auxiliary force for the rotation of the support roller 23.

[0049] Reference Figure 1 and Figure 2 In actual use, there may be a situation where the material 7 needs to be cut after printing. In this case, there is no need to place a material roll on the support roller 23 below to reel up the material 7, that is, the discharge end of the printed material 7 is directly overlapped on the two support rollers 23, and a paper tube is placed between the two support rollers 23. The material 7 is pressed onto the two support rollers 23 through the paper tube, so that the paper tube and the two support rollers 23 together form a triangular roller limiting structure. At this time, the printed material 7 can be rotated and guided to the ground through the cooperation of the paper tube and the two support rollers 23, so as to facilitate the collection and cutting by subsequent staff.

[0050] Reference Figure 2 and Figure 5There are two groups of material roll driving mechanisms 3, and the two groups of material roll driving mechanisms 3 are relatively arranged at the two ends of the length direction of the cross plate 22. The material roll driving mechanism 3 is composed of a sliding seat 31, a rotating roller 32, an expansion roller 33, a first driving component 34 and a dynamic support component 35, wherein the sliding seat 31 is slidably connected to the cross plate 22 along the length direction of the cross plate 22, and a rotating roller 32 is rotatably arranged on the sliding seat 31, one end of the expansion roller 33 is suspended, and the other end of the expansion roller 33 is coaxially fixedly connected to one end of the rotating roller 32, and the other end of the rotating roller 32 is coaxially fixedly connected to a driven gear 321, and the first driving component 34 and the dynamic support component 35 are both arranged on the sliding seat 31.

[0051] Reference Figure 5 and Figure 6 The first driving assembly 34 is used to drive the driven gear 321 to rotate. The first driving assembly 34 includes a first driving motor 341 and a driving gear 342. The driving gear 342 is coaxially fixed on the output shaft of the first driving motor 341. The first driving motor 341 is arranged on the sliding seat 31. The driving gear 342 is located above the driven gear 321, and the driving gear 342 is meshed with the driven gear 321. When in use, the output shaft of the first driving motor 341 rotates to drive the driving gear 342 to rotate, thereby driving the driven gear 321 to rotate, thereby driving the rotating roller 32 to rotate synchronously, and then driving the inflation roller 33 to rotate.

[0052] Reference Figure 5 and Figure 6 The dynamic support assembly 35 is composed of a fixed frame 351, a sliding frame 352, a balancing cylinder 353 and a pressure regulating valve 354, wherein the bottom end of the fixed frame 351 is fixed to the sliding seat 31 by bolts, the sliding frame 352 is slidably connected to the fixed frame 351 along the vertical direction, the balancing cylinder 353 is invertedly arranged on the fixed frame 351, and the cylinder body end of the balancing cylinder 353 is fixed to the sliding frame 352 by bolts, the piston rod end of the balancing cylinder 353 is fixed to the fixed frame 351 by bolts, and the pressure regulating valve 354 is installed on the sliding frame 352 by bolts. The pressure regulating valve 354 is used to control and adjust the pressure in the balancing cylinder 353 in real time. In this embodiment, the balancing cylinder 353 adopts an ordinary pneumatic cylinder, and the pressure regulating valve 354 adopts a precision pressure regulating valve 354. The air inlet of the balancing cylinder 353 is connected to the external air pump through the pressure regulating valve 354, and the air outlet of the balancing cylinder 353 is vented.

[0053] Reference Figure 5 and Figure 6The two ends of the rotating roller 32 are rotatably connected to the two sides of the sliding frame 352 respectively, and a sliding groove for the rotating roller 32 to slide is opened on the fixed frame 351. The first drive motor 341 and the inflation roller 33 are both located outside the sliding frame 352. The first drive motor 341 is bolted to the sliding frame 352, and a handle 357 is welded to the top of the sliding frame 352. When in use, a cantilever structure is formed by combining the connection method of the rotating roller 32 and the sliding frame 352, so that the cantilever structure provides a lever force for the inflation roller 33, so that the inflation roller 33 is in a suspended state as a whole. The stability, thereby improving the convenience of connecting the inflation roller 33 with the material roll.

[0054] Reference Figure 5 and Figure 6 During the loading process, the staff adjusts the pressure in the balancing cylinder 353 by the preset pressure value of the pressure regulating valve 354, so that the overall weight of the dynamic support assembly 35, the rotating roller 32 and the inflation roller 33 is offset by the pressure in the balancing cylinder 353, so that when the staff pulls the sliding frame 352 through the handle 357, it only takes a small amount of force to pull the sliding frame 352 and drive the first drive motor 341, the rotating roller 32 and the inflation roller 33 to move synchronously, so that it is convenient for the staff to adjust the position of the inflation roller 33 so that the inflation roller 33 is aligned with the center of the material roll, so as to facilitate the insertion of the inflation roller 33 into the material roll; for the unloading process, the staff only needs to deflate the inflation roller 33, and then move the sliding seat 31 to make the inflation roller 33 separate from the material roll, and then the material roll can be directly transported to the designated area, and the overall use is simple and convenient.

[0055] Reference Figure 5 and Figure 6 When the inflation roller 33 is inflated, the surface of the inflation roller 33 extends out and abuts against the inner wall of the material roll. At this time, the friction between the inflation roller 33 and the inner wall of the material roll, combined with the gravity of the material roll itself, can prevent the sliding seat 31 from continuing to slide. In addition, in order to further ensure that the sliding seat 31 slides after the inflation roller 33 and the material roll are installed, a positioning structure 311 is also provided on the sliding seat 31. In this embodiment, the positioning structure 311 is configured as a positioning bolt, and a plurality of positioning holes 221 are provided on the cross plate 22. The plurality of positioning holes 221 are evenly spaced along the length direction of the cross plate 22. When the sliding seat 31 slides to the specified position, the positioning bolt can be screwed so that the bottom end of the positioning bolt is inserted into the positioning hole 221 at the corresponding position, thereby realizing the positioning of the sliding seat 31.

[0056] Reference Figure 1 and Figure 7A hoisting assembly 4 is also provided at the top of the frame 1. The hoisting assembly 4 is used to hoist the material roll onto the supporting and guiding mechanism 2. The hoisting assembly 4 is composed of a first slider 41, a second driving assembly 42, a second slider 43, a third driving assembly 44 and an electric hoist 45. Among them, two first sliders 41 are provided, and the two first sliders 41 are both slidably set at the top of the frame 1. The second driving assembly 42 is set between the two first sliders 41. The second driving assembly 42 is used to drive the two first sliders 41 to slide synchronously and in the same direction along the length direction of the frame 1.

[0057] Reference Figure 7 and Figure 8 The second driving assembly 42 includes a connecting rod 421 arranged between the two first sliders 41, a second driving motor 422 installed on the connecting rod 421, and a first gear 423 coaxially fixed on the output shaft of the second driving motor 422. The connecting rod 421 connects the two first sliders 41 together, and a first rack 424 is fixed to the frame 1 by bolts, and the first gear 423 is meshed with the first rack 424; when in use, the first gear 423 is driven to rotate by the output shaft of the second driving motor 422, and the second driving motor 422 slides under the cooperation of the first rack 424, thereby driving the first slider 41 to slide, thereby moving the hoisting assembly 4 to the upper center position of the material roll, and then when the position of the material roll is offset, the position of the hoisting assembly 4 is adjusted to realize the hoisting and transportation of the material roll.

[0058] Reference Figure 7 and Fig. 9 , a group of second sliders 43, third driving components 44 and electric hoists 45 are correspondingly arranged on each first slider 41, the second slider 43 slides on the first slider 41 along the width direction of the frame 1, and the third driving component 44 is used to drive the second slider 43 to slide. In this embodiment, the third driving component 44 includes a third driving cylinder 441 and a first connecting block 442, the third driving cylinder 441 is installed on the first slider 41, the first connecting block 442 is fixed to the second slider 43 by bolts, and the piston rod end of the third driving cylinder 441 is fixedly connected to the first connecting block 442, and the electric hoist 45 is installed on the end of the second slider 43 away from the first slider 41, and the electric hoist 45 is used to hoist the material roll; when in use, the second slider 43 can be controlled to slide by the extension and retraction of the piston rod of the third driving cylinder 441, so as to drive the electric hoist 45 to move and extend to the top of the supporting and guiding mechanism 2, thereby facilitating the loading or unloading operations on the two supporting and guiding mechanisms 2.

[0059] Reference Figure 2 and Fig.10A double-sided inkjet printer also includes a conveying roller mechanism 5 arranged on a frame 1, and the conveying roller mechanism 5 is composed of a first friction roller 51, a first guide roller 52, a first guide roller 53, a second friction roller 54, a second guide roller 55 and a second guide roller 56, wherein the first friction roller 51, the first guide roller 52 and the first guide roller 53 are a group and are arranged at the upper end of the frame 1, the second friction roller 54, the second guide roller 55 and the second guide roller 56 are a group and are arranged at the lower end of the frame 1, the first friction roller 51 drives the material 7 in the unwinding direction of the material roll to move forward through friction force, and the first guide roller 52 and the first guide roller 53 are used to guide the moving direction of the material 7 in the unwinding direction of the material roll.

[0060] Reference Figure 2 and Fig.10 In addition, during use, since the diameters of the first guide roller 52 and the second guide roller 55 are relatively small, they are prone to slight deformation in the middle part under the influence of their own gravity. Therefore, when manufacturing the first guide roller 52 and the second guide roller 55, the middle part of the first guide roller 52 and the second guide roller 55 can be heightened, that is, the outer diameter of the first guide roller 52 and the second guide roller 55 gradually decreases from the middle part to the two ends; and when manufacturing the first friction roller 51 and the second friction roller 54, a friction surface is set on the outer wall of the first friction roller 51 and the second friction roller 54, such as an anti-slip pattern that increases friction, or an anti-slip material with greater friction, so as to increase the friction between it and the material 7.

[0061] Reference Figure 2 and Fig.10 The second friction roller 54 drives the material 7 in the winding direction to move forward through friction force, and the second guide roller 55 and the second guide roller 56 are used to guide the moving direction of the material 7 in the winding direction. Two second guide rollers 55 are provided, and the two second guide rollers 55 and the second friction roller 54 are triangularly distributed; when in use, on the one hand, the distribution position of the two second guide rollers 55 provides tension for the winding of the material 7, and at the same time, the contact area between the material 7 and the second friction roller 54 is increased, which is more convenient for the transmission of the material 7. On the other hand, even if the middle part of the second guide roller 55 is heightened, it is inevitable that slight deformation will occur after long-term use. At this time, the tension of the material 7 itself can be used to exert a reverse pulling force on the second guide roller 55, thereby reducing the possibility of deformation of the second guide roller 55 during long-term use to a certain extent. At the same time, the tension of the material 7 can also provide pulling force to the two second guide rollers 55 and the second friction roller 54, so as to ensure that the two second guide rollers 55 and the second friction roller 54 are always in a trend of being close to each other.

[0062] The implementation principle of the embodiment of the present application is as follows: when in use, the material roll is first transported to the vicinity of the frame 1, and then the electric hoist 45 is moved and extended to the outside of the frame 1 through the cooperation of the second drive component 42 and the third drive component 44, and then the staff hoists the material roll to the support and guide mechanism 2 through the electric hoist 45, and then the staff inserts the air roller 33 into the material roll through the dynamic support component 35 to complete the material roll loading operation, and then the staff pulls the material 7 to the conveying roller mechanism 5 and winds it around the material roll at the receiving place, and then the material 7 can be wound and unwound by the rotation of the air roller 33; compared with the method of loading by multiple people in the prior art, the above method is more convenient to use as a whole, and the loading efficiency is higher. At the same time, it supports single-person loading, saves labor costs, and is more convenient to use.

[0063] Embodiment 2:

[0064] Reference Fig.11 and Fig.12 The difference between this embodiment and the embodiment 1 is that a PLC device 6 is further installed on the frame 1, and a distance sensor 355 and a proportional valve 356 are installed on the sliding frame 352 by bolts, and the detection head of the distance sensor 355 is set toward the roll; during the winding or unwinding process of the roll, the distance sensor 355 detects the change value of the outer diameter of the roll, and transmits the value to the PLC device 6 by transmitting an electrical signal, and the PLC device 6 receives and processes the electrical signal, that is, calculates the weight of the roll according to the change value of the outer diameter of the roll, thereby controlling the proportional valve 356 to dynamically adjust the preset pressure value of the pressure regulating valve 354 through the weight change of the roll, and then controlling the piston rod of the balancing cylinder 353 to be extended and retracted through the pressure regulating valve 354, so as to achieve the purpose of adjusting the height of the axis of the expansion roller 33 in real time, thereby ensuring that the outer diameter of the roll is constantly changed during the winding or unwinding process of the roll, and the expansion roller 33 dynamically adjusts the height according to the change value of the outer diameter of the roll, so that the outer wall of the roll is always in contact with the outer wall of the support roller 23, thereby ensuring the unwinding quality of the roll.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A material roll auxiliary device for loading and unloading materials, characterized in that: The invention comprises a frame (1), on which a support guide mechanism (2) for supporting and guiding a material roll to rotate and a material roll driving mechanism (3) for driving the material roll to rotate are arranged; the material roll driving mechanism (3) comprises a sliding seat (31) slidingly arranged on the support guide mechanism (2), a rotating roller (32) rotating on the sliding seat (31), an expansion roller (33) coaxially fixed to one end of the rotating roller (32), a first driving component (34) arranged on the sliding seat (31) for driving the rotating roller (32) to rotate, and a dynamic supporting component (35) arranged on the sliding seat (31) for balancing the gravity of the expansion roller (33); the material roll driving mechanism (3) is provided with two groups, and the two groups of the material roll driving mechanism (3) are relatively arranged at the two ends of the material roll.

2. A material roll auxiliary device for loading and unloading materials according to claim 1, characterized in that: The support and guide mechanism (2) comprises two connecting plates (21) arranged on the frame (1) at intervals, a transverse plate (22) arranged between the two connecting plates (21), and a support roller (23) arranged between the two connecting plates (21); one end of the connecting plate (21) is fixed on the frame (1); the other end of the connecting plate (21) is provided with an embedding groove; the two ends of the transverse plate (22) are respectively embedded in the embedding groove of one connecting plate (21); two support rollers (23) are provided, and the two supporting rollers (23) are connected to each other. The rollers (23) are respectively located on one side of the transverse plate (22); one end of the support roller (23) is rotatably connected to a connecting plate (21); the other end of the support roller (23) is rotatably connected to another connecting plate (21); a placement space for placing a material roll is formed between the two support rollers (23); the sliding seat (31) is slidably arranged on the transverse plate (22); the expansion roller (33) is located in the placement space; and a support assembly (24) for supporting the support roller (23) is also arranged on the transverse plate (22).

3. A material roll auxiliary device for loading and unloading materials according to claim 2, characterized in that: The support assembly (24) comprises a mounting seat (241) fixed on the transverse plate (22), and two driven rollers (242) rotating on the mounting seat (241), the two driven rollers (242) being arranged at an interval, the driven rollers (242) being parallel to the axes of the support rollers (23), the support roller (23) being located between the two driven rollers (242), and the outer wall of the support roller (23) being in contact with the outer walls of the two driven rollers (242).

4. A material roll auxiliary device for loading and unloading materials according to claim 1, characterized in that: The dynamic support assembly (35) comprises a fixed frame (351) fixed on the sliding seat (31), a sliding frame (352) slidingly arranged on the fixed frame (351), a balancing cylinder (353) arranged on the sliding seat (31), and a pressure regulating valve (354) for adjusting the pressure in the balancing cylinder (353); the cylinder body of the balancing cylinder (353) is fixed on the sliding frame (352); the end of the piston rod of the balancing cylinder (353) is fixed on the fixed frame (351); the first driving assembly (34) and the pressure regulating valve (354) are both installed on the sliding frame (352); the rotating roller (32) is rotatably connected to the sliding frame (352); and the expansion roller (33) is coaxially fixedly connected to one end of the rotating roller (32) away from the first driving assembly (34).

5. A material roll auxiliary device for loading and unloading materials according to claim 4, characterized in that: The sliding frame (352) is provided with a distance sensor (355) for monitoring the outer diameter of the material roll, and a proportional valve (356) for controlling the pressure regulating valve (354) to dynamically adjust the pressure in the balancing cylinder (353). The frame (1) is provided with a PLC device (6), and the PLC device (6) is used to receive and process the signal transmitted by the distance sensor (355), and control the switch of the proportional valve (356).

6. A material roll auxiliary device for loading and unloading materials according to claim 2, characterized in that: A positioning bolt (311) is also provided on the sliding seat (31), and a positioning hole (221) is provided on the transverse plate (22). A plurality of positioning holes (221) are provided, and the plurality of positioning holes (221) are evenly spaced and distributed along the length direction of the transverse plate (22). One end of the positioning bolt (311) passes through the sliding seat (31) and is threadedly connected to one of the positioning holes (221).

7. A material roll auxiliary device for loading and unloading materials according to claim 1, characterized in that: The frame (1) is also provided with a hoisting assembly (4) for hoisting the material roll onto the supporting guide mechanism (2).

8. A material roll auxiliary device for loading and unloading materials according to claim 7, characterized in that: The hoisting assembly (4) comprises two groups of first sliders (41) slidably arranged on the frame (1), a second driving assembly (42) arranged on the frame (1) for driving the first slider (41) to slide along the length direction of the frame (1), a second slider (43) slidably arranged on the first slider (41), a third driving assembly (44) arranged on the first slider (41) for driving the second slider (43) to slide along the width direction of the frame (1), and an electric hoist (45) installed at one end of the second slider (43) away from the first slider (41), and the electric hoist (45) is used for hoisting the material roll.

9. A double-sided inkjet printer, comprising a roll auxiliary device for loading and unloading materials as claimed in any one of claims 1 to 8, characterized in that: The machine also comprises a conveying roller mechanism (5) arranged on the frame (1), the conveying roller mechanism (5) comprising a first friction roller (51), a first guide roller (52), a first guide roller (53), a second friction roller (54), a second guide roller (55) and a second guide roller (56) rotating on the frame (1), the first friction roller (51) and the second friction roller (54) driving the material (7) to move forward by friction force, the first guide roller (52), the first guide roller (53), the second guide roller (55) and the second guide roller (56) being used to guide the moving direction of the material (7), two second guide rollers (55) being provided, and the two second guide rollers (55) and the one second friction roller (54) being distributed in a triangle.

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