A paper direction changing device for a digital printer

Abstract

The present invention provides a paper direction changing device for a digital printer, which relates to the technical field of conveying devices and includes a conveying frame. A placing component is arranged inside the conveying frame, and the placing component includes front and rear fences. Left and right fences are arranged on both sides of the front and rear fences, and both the front and rear fences and the left and right fences are composed of three vertical plates. Roller shafts are rotatably installed at the tops of the vertical plates of the front and rear fences and the left and right fences. Insertion plates are slidably inserted at equal intervals between the adjacent vertical plates of the front and rear fences and the left and right fences. The printed papers are stacked and placed inside the placing component. The front and rear fences and the left and right fences of the placing component can be adjusted according to the width and length of the papers. Subsequently, the position of the fence facing the sending plate is lower than that of the two sides, and the two sides limit the position of the papers to prevent displacement. When the direction needs to be changed, the placing component is driven to rotate by a driving component, and the position of the hanging ring fence corresponds to the sending plate, without the need to take out the papers for manual adjustment, which is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying devices, and particularly to a paper direction changing device for a digital printer. Background Art

[0002] When an existing printer is working, when the content printed by the printer is horizontal, this usually means that the printing settings or the paper direction need to be adjusted. After the paper enters the printer, it can only move in the same direction and cannot achieve automatic paper commutation. Therefore, it is necessary to manually adjust the paper entry direction additionally.

[0003] Currently, most of the printer papers are conveyed in stacks. The papers are driven into the printer interior by rolling friction on the uppermost end of the papers. In this process, it is inconvenient for people to take out the stacked papers and then reverse the direction, and it is necessary to re-keep the neatness of the paper stack. Otherwise, it is easy to cause the phenomenon of paper displacement during paper conveyance, affecting the printing effect. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a paper direction changing device for a digital printer to solve the problems raised in the above background art. The structure of the present invention is novel. The printed papers are stacked and placed inside the placing component. The front and rear fences and the left and right fences of the placing component can be adjusted according to the width and length of the papers. Subsequently, the position of the fence facing the sending plate is lower than that of the two sides, and the two sides limit the paper to prevent displacement. When the direction needs to be changed, the placing component is driven to rotate by the driving component, and the position of the hanging ring fence corresponds to the sending plate, without the need to take out the papers for manual adjustment, which is more convenient.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions: A paper direction changing device for a digital printer, including a conveying frame. A placing component is arranged inside the conveying frame, and the placing component includes front and rear fences. The two sides of the front and rear fences are provided with left and right fences, and both the front and rear fences and the left and right fences are composed of three vertical plates. Roller shafts are rotatably installed at the tops of the vertical plates of the front and rear fences and the left and right fences. Insertion plates are slidably inserted at equal intervals between the adjacent vertical plates of the front and rear fences and the left and right fences. The bottoms of the front and rear fences and the left and right fences are provided with support frames, and the support frames are composed of circular plates and two straight plates. The two straight plates of the support frames are slidably inserted at the bottoms of the middle vertical plates of the front and rear fences and the left and right fences. Driving components are arranged on both sides of the conveying frame. The driving components include slide rails. Slide rails are fixed to the inner walls on both sides of the conveying frame, and slide plates are slidably connected inside the slide rails. A circular ring frame is fixed to the outer side of the slide plates. The front and rear fences and the left and right fences are installed inside the circular ring frame. An outlet is opened at the top of one side of the conveying frame, and a sending plate is arranged at the outlet end of the conveying frame. A top frame is fixed to the top of the conveying frame, and two groups of rubber friction rollers are installed at the top of the top frame corresponding to the protected areas of the front and rear fences and the left and right fences.

[0006] Further, two groups of electric push rods are fixed to the top of the top frame, and two telescopic frames are fixed to the extending ends of the electric push rods. Both ends of the telescopic frame are respectively connected and installed with two rubber friction rollers.

[0007] Further, the placing assembly further includes a vertical column. The vertical column is fixed to the bottom of the circular plate of the support frame, and the bottom surface of the vertical column is slidably sleeved with a bottom plate. Top rods are provided at the four corners of the top of the bottom plate, and extrusion pads are fixed to the tops of the top rods.

[0008] Further, side grooves are formed on the side edges of the vertical plates on both sides of the front and rear fences and the left and right fences, and insertion frames are slidably connected inside the side grooves. Right-angle plates are equidistantly arranged in the side grooves where the front and rear fences and the left and right fences are at right angles, and both ends of the right-angle plates are slidably inserted inside the insertion frames of the front and rear fences and the left and right fences.

[0009] Further, a connecting shaft is fixed at the middle position of the right-angle plate, and a second telescopic plate is rotatably connected to the bottom of the connecting shaft through a rotating shaft. The top rod is slidably inserted on the extending end of the second telescopic plate, and the other end of the second telescopic plate is rotatably installed on the bottom surface of the circular plate of the support frame through a rotating shaft. A first spring is sleeved on the surface of the top rod between the second telescopic plate and the bottom plate. A sliding groove is formed on the surface of the bottom plate, and the bottom of the top rod slides along the sliding groove through a slider.

[0010] Further, moving grooves are formed at the bottoms of the middle vertical plates of the front and rear fences and the left and right fences, and fastening frames are slidably connected inside the moving grooves. The cross plate of the support frame slidably passes through the fastening frame, and a second spring is fixed to the top of the fastening frame. The other end of the second spring is fixed to the inner wall of the top of the moving groove.

[0011] Further, adjusting screws are rotatably installed at the bottoms of the two straight plates of the support frame through bearings. The two adjusting screws are arranged in a staggered manner, and the bottoms of the fastening frames are threadedly sleeved on the surfaces of their respective adjusting screws.

[0012] Further, first telescopic plates are fixed to the outer sides of the middle vertical plates of the front and rear fences and the left and right fences, and vertical rods are fixed to the bottoms of the first telescopic plates. The bottoms of the vertical rods slide along the inside of the circular ring frame through sliders, and the slopes on both sides of the circular ring frame are higher than the height in the front and back.

[0013] Further, the driving assembly further includes a lead screw. The lead screw is rotatably installed inside the slide rail through a bearing, and the slide plate is threadedly sleeved on the surface of the lead screw. A first motor is fixed to the outer end of the slide rail, and the output end of the first motor is fixed to the lead screw.

[0014] Furthermore, a second gear is rotatably mounted on the surface of the inlet end of the conveying rack through a bearing, and a socket is fixed to the top of the center of the second gear. The vertical column is slidably clamped inside the socket. A second motor is fixed to the bottom surface of the conveying rack on one side of the second gear, and a first gear is fixed to the output end of the second motor. The first gear is meshed with the second gear.

[0015] Advantages of the present invention:

[0016] 1. In the present invention, the placing assembly moves along the slide rail to the top of the second gear driven by the lead screw. The socket has two openings, and rubber pads are provided on the inner wall, which can increase the stability after being clamped with the vertical column. The vertical column is a square column. After being inserted through the front opening of the socket, the first gear can be driven by the second motor to rotate and mesh with the second gear, so that the placing assembly is driven to rotate by the clamping of the socket and the vertical column. At this time, the front and rear fences and the left and right fences on the top of the placing assembly are swapped. During the rotation, the vertical rods on the outside of the front and rear fences and the left and right fences slide along the circular ring frame. The two sides of the circular ring frame are provided with inclined surfaces and are higher in the front and rear. The vertical rods will drive the corresponding fences to generate vertical displacement. Therefore, the top height of the fences in the front and rear positions is lower than that of the left and right fences. This height difference is the space for sending out the paper. The paper can be sent out from the front and rear directions while being limited on both sides. Then, the vertical column of the placing assembly is sent out from another outlet through the lead screw. The two outlets of the socket are set at 90 degrees, and both can send out the vertical column.

[0017] 2. In the present invention, the first motor drives the lead screw to rotate, and the slide plate is in threaded cooperation with the lead screw to drive the circular ring frame and the placing assembly to move to a position away from the sending plate, which can facilitate the rotation of the placing assembly to swap the sending direction. At the same time, it is also convenient to move the placing assembly to the inlet end of the conveying rack to refill the printing paper after the paper in the placing assembly is used up.

[0018] 3. In the present invention, each vertical plate between the front and rear fences and the left and right fences is connected to each other through an insertion plate, and the right-angled sides of the front and rear fences and the left and right fences are connected through a right-angled plate to maintain the stability of the overall frame. At the same time, the lengths of the front and rear and the left and right can be adjusted to meet the use of papers of different sizes. The specific adjustment method is to rotate two staggered adjustment screws. The adjustment screws are bidirectional screws. The buckle frame is in threaded cooperation with the adjustment screws to adjust the lengths of the front and rear fences and the left and right fences. When adjusting the length, the first telescopic plate expands and contracts to maintain the connection between the outside of the fence and the vertical rod, and cooperates with the support frame to wrap the stacked papers.

[0019] 4. The four ejector rods and the extrusion pads of the present invention are located at the four corner positions of the support frame. Through the connection of the second telescopic plate and the connecting shaft, when adjusting the sizes of the front and rear fences and the left and right fences, the length of the second telescopic plate and the position of the ejector rods are synchronously adjusted. The bottom of the ejector rod slides along the chute to avoid interfering with the adjustment of the lengths of the front and rear fences and the left and right fences. When the vertical rod moves to the low point position of the circular ring frame, the second spring in the moving groove will drive the fence at this position to move downward, maintaining a height difference between the front and rear and the two sides all the time. While using the height difference to limit the paper, it is convenient to send out the paper. The paper is held inside the placement component by the elastic force of the four ejector rods and the first spring, and as the paper is used, the ejector rods gradually push the lower-layer paper upward, ensuring that there is always paper at the uppermost end for conveyance.

[0020] 5. Compared with the prior art, the present invention stacks the printing paper inside the placement component. The front and rear fences and the left and right fences of the placement component can be adjusted according to the width and length of the paper. Subsequently, the position of the fence facing the delivery plate is lower than that on both sides, and the two sides limit the paper to prevent displacement. When it is necessary to change the direction, the driving component drives the placement component to rotate, and the position of the hanging ring fence corresponds to the delivery plate, without having to take out the paper for manual adjustment, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a paper direction changing device for a digital printer according to the present invention;

[0022] Figure 2 It is a schematic diagram of the inside of the conveying frame of a paper direction changing device for a digital printer according to the present invention;

[0023] Figure 3 It is a schematic diagram of the connection between the placement component and the driving component of a paper direction changing device for a digital printer according to the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the placement component of a paper direction changing device for a digital printer according to the present invention;

[0025] Figure 5 It is a schematic diagram of the connection between the front and rear fences and the left and right fences and the circular ring frame of a paper direction changing device for a digital printer according to the present invention;

[0026] Figure 6 It is a schematic diagram of the bottom structure of the placement component of a paper direction changing device for a digital printer according to the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the front and rear fences of a paper direction changing device for a digital printer according to the present invention.

[0028] In the figure: 1. Conveyor frame; 11. Sending plate; 12. Top frame; 13. Electric push rod; 14. Rubber friction roller; 15. Telescopic frame; 2. Driving assembly; 21. Slide rail; 22. First motor; 23. Lead screw; 24. Second motor; 25. First gear; 26. Second gear; 27. Socket; 28. Ring frame; 29. Slide plate; 3. Placing assembly; 31. Front and rear fences; 32. Left and right fences; 33. Roller shaft; 34. Insert plate; 35. Right-angle plate; 36. Connecting shaft; 37. Bottom plate; 38. Vertical column; 39. Top rod; 310. First spring; 311. First telescopic plate; 312. Vertical rod; 313. Support frame; 314. Chute; 315. Second telescopic plate; 316. Extrusion pad; 317. Side groove; 318. Moving groove; 319. Buckle frame; 320. Second spring; 321. Insert frame; 322. Adjusting screw. Detailed implementation manners

[0029] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0030] Please refer to Figures 1 to 7, the present invention provides a technical solution: a paper direction changing device for a digital printer, including a conveying frame 1. Inside the conveying frame 1, there is a placing component 3, and the placing component 3 includes front and rear fences 31. On both sides of the front and rear fences 31, there are left and right fences 32. Both the front and rear fences 31 and the left and right fences 32 are composed of three vertical plates. At the top of the vertical plates of the front and rear fences 31 and the left and right fences 32, there are roller shafts 33 rotatably installed. Between the adjacent vertical plates of the front and rear fences 31 and the left and right fences 32, there are insertion plates 34 slidably inserted at equal intervals. At the bottom of the front and rear fences 31 and the left and right fences 32, there is a support frame 313, and the support frame 313 is composed of a circular plate and two straight plates. The two straight plates of the support frame 313 are slidably inserted at the bottom of the middle vertical plates of the front and rear fences 31 and the left and right fences 32. On both sides of the conveying frame 1, there is a driving component 2. The driving component 2 includes a slide rail 21. The slide rails 21 are fixed to the inner walls on both sides of the conveying frame 1, and a slide plate 29 is slidably connected inside the slide rail 21. On the outer side of the slide plate 29, there is a circular ring frame 28. The front and rear fences 31 and the left and right fences 32 are installed inside the circular ring frame 28. At the top of one side of the conveying frame 1, there is an outlet, and at the outlet end of the conveying frame 1, there is a sending plate 11. On the top of the conveying frame 1, there is a top frame 12. At the top corresponding to the protected areas of the front and rear fences 31 and the left and right fences 32, there are two groups of rubber friction rollers 14 installed. When using the device, stack the papers and put them inside the placing component 3. The front and rear fences 31 and the left and right fences 32 of the placing component 3 adjust the length and width according to the size of the papers and wrap around the periphery of the papers. Then, through the driving component 2, it is moved to the outlet position of the conveying frame 1. The rubber friction rollers 14 roll and press the topmost paper of the placing component 3 and send it into the printer through the sending plate 11. When it is necessary to change the paper sending direction, the driving component 2 cooperates with the placing component 3 to rotate the paper by ninety degrees and re-convey it.

[0031] In this embodiment, two groups of electric push rods 13 are fixed to the top of the top frame 12, and the extending ends of the electric push rods 13 are fixed with two groups of telescopic frames 15. The two ends of the telescopic frames 15 are respectively connected and installed with two groups of rubber friction rollers 14. The rubber friction rollers 14 can prevent the generation of static electricity. At the same time, this structure is divided into a mounting frame and an electrically driven friction roller, which can be installed at the bottom of the telescopic frame 15 according to the size of the paper. Then, adjust the length of the telescopic frame 15 to adjust the distance between the two friction rollers. The electric push rods 13 drive the rubber friction rollers 14 to contact the topmost paper of the placing component 3 and send it into the printer through the sending plate 11.

[0032] In this embodiment, the placement component 3 further includes a vertical column 38. The vertical column 38 is fixed to the bottom of the circular plate of the support frame 313, and the bottom surface of the vertical column 38 is slidably sleeved with a bottom plate 37. At the four corners of the top of the bottom plate 37, there are ejector rods 39, and the top of the ejector rod 39 is fixed with an extrusion pad 316. Side grooves 317 are formed on the side edges of the vertical plates on both sides of the front and rear fences 31 and the left and right fences 32, and an insertion frame 321 is slidably connected inside the side grooves 317. Right-angle plates 35 are equidistantly arranged in the side grooves 317 where the front and rear fences 31 and the left and right fences 32 are at right angles, and both ends of the right-angle plate 35 are slidably inserted into the insertion frames 321 of the front and rear fences 31 and the left and right fences 32. A connecting shaft 36 is fixed at the middle position of the right-angle plate 35, and the bottom of the connecting shaft 36 is rotatably connected to a second telescopic plate 315 through a rotating shaft. The ejector rod 39 is slidably inserted into the extended end of the second telescopic plate 315, and the other end of the second telescopic plate 315 is rotatably installed on the bottom surface of the circular plate of the support frame 313 through a rotating shaft. A first spring 310 is sleeved on the surface of the ejector rod 39 between the second telescopic plate 315 and the bottom plate 37. A sliding groove 314 is formed on the surface of the bottom plate 37, and the bottom of the ejector rod 39 slides along the sliding groove 314 through a slider. A moving groove 318 is formed at the bottom of the middle vertical plate of the front and rear fences 31 and the left and right fences 32, and a fastening frame 319 is slidably connected inside the moving groove 318. The cross plate of the support frame 313 slides through the fastening frame 319, and a second spring 320 is fixed to the top of the fastening frame 319. The other end of the second spring 320 is fixed to the inner wall of the top of the moving groove 318. The bottoms of the two straight plates of the support frame 313 are rotatably installed with adjusting screws 322 through bearings. The two adjusting screws 322 are arranged in a staggered manner, and the bottom of the fastening frame 319 is threadedly sleeved on the surface of its respective adjusting screw 322. Each vertical plate of the front and rear fences 31 and the left and right fences 32 is connected to each other through an insertion plate 34, and the right-angle sides of the front and rear fences 31 and the left and right fences 32 are connected through a right-angle plate 35 to maintain the stability of the overall frame. At the same time, the lengths in the front-back and left-right directions can be adjusted to meet the use of papers of different sizes. The specific adjustment method is to rotate the two staggered adjusting screws 322. The adjusting screw 322 is a bidirectional screw, and the fastening frame 319 is threadedly engaged with the adjusting screw 322 to adjust the lengths of the front and rear fences 31 and the left and right fences 32. When adjusting the length, the telescopic property of the first telescopic plate 311 is used to maintain the connection between the outer side of the fence and the vertical rod 312, and the stacked papers are wrapped in cooperation with the support frame 313. The four ejector rods 39 and the extrusion pads 316 are located at the four corner positions of the support frame 313. Through the connection of the second telescopic plate 315 and the connecting shaft 36, when the front and rear fences 31 and the left and right fences 32 adjust the size, the length of the second telescopic plate 315 and the position of the ejector rod 39 are synchronously adjusted. The bottom of the ejector rod 39 slides along the sliding groove 314 to avoid interfering with the adjustment of the lengths of the front and rear fences 31 and the left and right fences 32. When the vertical rod 312 moves to the low point position of the circular ring frame 28,The second spring 320 in the moving slot 318 drives the fence at this position to move downward, maintaining a height difference between the front and back and on both sides all the time. While using the height difference to limit the paper, it is convenient to send out the paper. The paper is held inside the placing assembly 3 by the elastic force of the four ejector rods 39 and the first spring 310. And as the paper is used, the ejector rods 39 gradually push the lower layer of paper upward, ensuring that there is always paper at the uppermost end for conveyance.

[0033] In this embodiment, the driving assembly 2 further includes a lead screw 23. The lead screw 23 is rotatably installed inside the slide rail 21 through a bearing, and the sliding plate 29 is threadedly sleeved on the surface of the lead screw 23. The outer end of the slide rail 21 is fixed with a first motor 22, and the output end of the first motor 22 is fixedly connected to the lead screw 23. By driving the lead screw 23 to rotate with the first motor 22, the sliding plate 29 is in threaded cooperation with the lead screw 23 to drive the circular ring frame 28 and the placing assembly 3 to move to a position away from the sending plate 11, which can facilitate the rotation of the placing assembly 3 to change the sending direction. At the same time, it is also convenient for the placing assembly 3 to move to the inlet end of the conveying rack 1 after the paper inside is used up to refill the printing paper.

[0034] In this embodiment, a first telescopic plate 311 is fixed to the outer side of the middle vertical plate of the front and rear fences 31 and the left and right fences 32, and a vertical rod 312 is fixed to the bottom of the first telescopic plate 311. The bottom of the vertical rod 312 slides along the inside of the circular ring frame 28 through a slider, and the slopes on both sides of the circular ring frame 28 are higher than the height in the front and rear directions. A second gear 26 is rotatably mounted on the surface of the inlet end of the conveying frame 1 through a bearing, and a socket 27 is fixed to the top of the center of the second gear 26. The vertical column 38 is slidably clamped inside the socket 27. A second motor 24 is fixed to the bottom surface of the conveying frame 1 on one side of the second gear 26, and a first gear 25 is fixed to the output end of the second motor 24. The first gear 25 is meshed with the second gear 26. The placing assembly 3 moves along the slide rail 21 to the top of the second gear 26 driven by the lead screw 23. The socket 27 has two openings, and rubber pads are provided on the inner wall, which can increase the stability after being clamped with the vertical column 38. The vertical column 38 is a square column. After being inserted through the front opening of the socket 27, the first gear 25 can be driven by the second motor 24 to rotate and mesh with the second gear 26, so that the placing assembly 3 is driven to rotate by the clamping of the socket 27 and the vertical column 38. At this time, the front and rear fences 31 and the left and right fences 32 on the top of the placing assembly 3 are swapped. During the rotation process, the vertical rods 312 on the outer sides of the front and rear fences 31 and the left and right fences 32 slide along the circular ring frame 28. The two sides of the circular ring frame 28 are provided with inclined surfaces and are higher than the front and rear. The vertical rod 312 will drive the corresponding fence to generate a vertical displacement. Therefore, the height of the top of the fences in the front and rear positions is lower than that of the left and right fences. This height difference is the space for sending out the paper. The paper can be sent out from the front and rear directions while being limited on both sides. Subsequently, the vertical column 38 of the placing assembly 3 is sent out from another outlet through the lead screw 23. The two outlets of the socket 27 are set at 90 degrees, and both can send out the vertical column 38.

[0035] When using the device, stack the papers and place them inside the placement component 3. Each vertical plate between the front and rear fences 31 and the left and right fences 32 is connected to each other by an insertion plate 34, and the right-angled sides of the front and rear fences 31 and the left and right fences 32 are connected by a right-angled plate 35 to maintain the stability of the overall frame. At the same time, the lengths in the front-back and left-right directions can be adjusted to meet the use of papers of different sizes. The specific adjustment method is to rotate two staggered adjustment screws 322. The adjustment screw 322 is a bidirectional screw, and the buckle frame 319 is threadedly engaged with the adjustment screw 322 to adjust the lengths of the front and rear fences 31 and the left and right fences 32. When adjusting the length, the first telescopic plate 311 expands and contracts to maintain the connection between the outside of the fence and the vertical rod 312, and cooperates with the support frame 313 to wrap the stacked papers. The four ejector rods 39 and the extrusion pads 316 are located at the four corner positions of the support frame 313. Through the connection of the second telescopic plate 315 and the connecting shaft 36, when the front and rear fences 31 and the left and right fences 32 adjust the size, the length of the second telescopic plate 315 and the position of the ejector rod 39 are synchronously adjusted. The bottom of the ejector rod 39 slides along the chute 314 to avoid interfering with the adjustment of the lengths of the front and rear fences 31 and the left and right fences 32. When the vertical rod 312 moves to the low point position of the circular ring frame 28, the second spring 320 in the moving groove 318 will drive the fence at this position to move downward, maintaining a height difference between the front-back and the two sides at all times. While using the height difference to limit the papers, it is convenient to send them out. The papers are held inside the placement component 3 by the elastic force of the four ejector rods 39 and the first spring 310. And as the papers are used, the ejector rod 39 gradually pushes the lower-layer papers upward to keep the uppermost layer always having papers that can be conveyed. Subsequently, it is moved to the outlet position of the conveying frame 1 by the driving component 2, and the rubber friction roller 14 rolls and presses the papers at the top of the placement component 3 to send them into the printer through the sending plate 11. When it is necessary to change the paper sending direction, the vertical column 38 is a square column. After being inserted along the front opening of the socket 27, the second motor 24 can drive the first gear 25 to rotate and engage with the second gear 26, so that the socket 27 and the vertical column 38 are clamped to drive the placement component 3 to rotate. At this time, the front and rear fences 31 and the left and right fences 32 at the top of the placement component 3 are swapped positions. During the rotation, the vertical rods 312 on the outside of the front and rear fences 31 and the left and right fences 32 slide along the circular ring frame 28. The two sides of the circular ring frame 28 are provided with inclined surfaces and are higher than the front and rear. The vertical rod 312 will drive the corresponding fence to generate a vertical displacement. Therefore, the height of the fences at the front and rear positions is lower than that of the left and right fences. This height difference is the space for sending out the papers. While the papers are limited on both sides, they can be sent out in the front-back direction. Subsequently, the vertical column 38 of the placement component 3 is sent out from another outlet through the lead screw 23. The two outlets of the socket 27 are set at 90 degrees, and both can send out the vertical column 38, rotating the direction of the papers by 90 degrees and re-conveying them.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0037] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper direction changing device for a digital printer, comprising a conveying frame (1), characterized in that: The conveying frame (1) is provided with a placement component (3) inside, and the placement component (3) includes a front and rear fence (31), and left and right fences (32) are provided on both sides of the front and rear fences (31), and the front and rear fences (31) and the left and right fences (32) are each composed of three vertical plates, and rollers (33) are rotatably installed on the tops of the vertical plates of the front and rear fences (31) and the left and right fences (32), and plug plates (34) are equidistantly slidably inserted between the adjacent vertical plates of the front and rear fences (31) and the left and right fences (32), and a support frame (313) is provided at the bottom of the front and rear fences (31) and the left and right fences (32), and the support frame (313) is composed of a circular plate and two straight plates, and the two straight plates of the support frame (313) are slidably inserted between the front and rear fences (31) and the left and right fences (32). The conveying frame (1) is provided with a driving assembly (2) on both sides of the conveying frame (1), and the driving assembly (2) includes a slide rail (21). The inner walls of the two sides of the conveying frame (1) are fixed with slide rails (21), and the slide rails (21) are slidably connected to the inside of the slide rails (21). A circular frame (28) is fixed on the outside of the slide rail (29). The front and rear fences (31) and the left and right fences (32) are installed inside the circular frame (28). An outlet is opened on the top of one side of the conveying frame (1), and a delivery plate (11) is provided at the outlet end of the conveying frame (1). A top frame (12) is fixed on the top of the conveying frame (1), and the top frame (12) is installed at the top of the protection area corresponding to the front and rear fences (31) and the left and right fences (32). Two groups of rubber friction rollers (14), a moving groove (318) is provided at the bottom of the middle vertical plate of the front and rear fences (31) and the left and right fences (32), and a buckle frame (319) is slidably connected in the moving groove (318), a horizontal plate of the support frame (313) slides through the buckle frame (319), and a second spring (320) is fixed on the top of the buckle frame (319), and the other end of the second spring (320) is fixedly connected to the inner wall of the top of the moving groove (318), a first telescopic plate (311) is fixed on the outer side of the middle vertical plate of the front and rear fences (31) and the left and right fences (32), and a vertical rod (312) is fixed at the bottom of the first telescopic plate (311), and the bottom of the vertical rod (312) slides along the inside of the circular frame (28) through a slider, and the circular frame (28) is connected to the vertical plate of the support frame (313). The slopes of both sides of the frame (28) are higher than the heights of the front and rear sides. A second gear (26) is rotatably mounted on the surface of the inlet end of the conveying frame (1) via a bearing, and a socket (27) is fixed to the top of the center of the second gear (26). The placement component (3) further comprises a vertical column (38), and the vertical column (38) can be slidably engaged in the socket (27). A second motor (24) is fixed on the bottom surface of the conveying frame (1) at one side of the second gear (26), and a first gear (25) is fixed to the output end of the second motor (24), and the first gear (25) is meshedly connected with the second gear (26). The driving component (2) further comprises a screw rod (23), and a screw rod (23) is rotatably mounted on the inside of the slide rail (21) via a bearing.The slide plate (29) is threadedly sleeved on the surface of the screw rod (23), a first motor (22) is fixed to the outer end of the slide rail (21), and an output end of the first motor (22) is fixedly connected to the screw rod (23).

2. The paper direction changing device for a digital printer according to claim 1, characterized in that: Two groups of electric push rods (13) are fixed on the top of the top frame (12), and two groups of telescopic frames (15) are fixed on the extended ends of the electric push rods (13), and the two ends of the telescopic frames (15) are respectively connected and installed with two groups of rubber friction rollers (14).

3. The paper direction changing device for a digital printer according to claim 1, characterized in that: A vertical column (38) is fixed to the bottom of the circular plate of the support frame (313), and a bottom plate (37) is slidably sleeved on the bottom surface of the vertical column (38). Top rods (39) are provided at the four corners of the top of the bottom plate (37), and a pressing pad (316) is fixed to the top of the top rod (39).

4. The paper direction changing device for a digital printer according to claim 3, characterized in that: Side grooves (317) are provided on the sides of the vertical plates on both sides of the front and rear fences (31) and the left and right fences (32), and an insertion frame (321) is slidably connected inside the side grooves (317), and right-angle plates (35) are equidistantly provided inside the side grooves (317) of the front and rear fences (31) and the left and right fences (32), and two ends of the right-angle plates (35) are slidably inserted inside the insertion frames (321) of the front and rear fences (31) and the left and right fences (32).

5. The paper direction changing device for a digital printer according to claim 4, characterized in that: A connecting shaft (36) is fixed at the middle position of the right-angle plate (35), and the bottom of the connecting shaft (36) is rotatably connected to the second telescopic plate (315) via a rotating shaft. The push rod (39) is slidably inserted into the extended end of the second telescopic plate (315), and the other end of the second telescopic plate (315) is rotatably mounted on the bottom surface of the circular plate of the support frame (313) via a rotating shaft. The push rod (39) is located between the second telescopic plate (315) and the bottom plate (37) and is sleeved with a first spring (310). A sliding groove (314) is provided on the surface of the bottom plate (37), and the bottom of the push rod (39) slides along the sliding groove (314) via a slider.

6. The paper direction changing device for a digital printer according to claim 1, characterized in that: The bottom of the two straight plates of the support frame (313) are rotatably mounted with adjusting screws (322) via bearings. The two adjusting screws (322) are staggered, and the bottom of the buckle frame (319) is threadedly sleeved on the surface of each adjusting screw (322).

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