Negative pressure paper suction transfer machine

Abstract

This utility model discloses a negative pressure paper conveying machine, including a paper carrier platform with an inner cavity. A suction wheel extending from the paper carrier platform is installed within the inner cavity. The suction wheel includes a column and a ring. The outer curved surface of the column has an annular groove, and the ring is fixed within the annular groove. A gap exists between the inner curved surface of the annular groove and the inner curved surface of the ring. The ring has multiple through-holes. A negative pressure mechanism is also included to generate negative pressure within the gap. This utility model is used for single-sheet conveying of stacked papers. The suction wheel is used to absorb and transport the bottommost sheet of paper. This paper conveying method is efficient and stable. A bending spring is included to prevent the paper from being stacked and transported out. An adjustable side plate is provided to ensure the paper is aligned and to prevent displacement during transport.

Description

Technical Field

[0001] This utility model relates to the field of paper transportation technology, and in particular to a negative pressure paper suction transfer machine. Background Technology

[0002] During the printing process, sheets of paper need to be fed into the printing equipment one by one. However, the sheet-fed printing presses commonly found on the market are prone to paper jams during the feeding process.

[0003] To address the aforementioned issues, application number 202121346903.7 discloses a conveying mechanism for a sheet-fed printing press, in which a vacuum suction cup capable of moving left and right and up and down is used to move the paper located on the uppermost side of the tray.

[0004] However, the above-mentioned paper transport method has certain drawbacks, namely, the large stroke range of the vacuum suction cup, which reduces the paper transport efficiency. In addition, as the thickness of the stacked paper decreases, the stroke of the vacuum suction cup will further increase, further reducing the paper transport efficiency. Therefore, improvements are needed to address this drawback. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a negative pressure paper suction and transfer machine to solve the problems mentioned in the background section.

[0006] This utility model provides the following technical solution: a negative pressure paper suction transfer machine, including a paper carrier platform, the paper carrier platform having an inner cavity, and a suction wheel extending to the paper carrier platform installed in the inner cavity;

[0007] The suction wheel includes a column and a ring. The outer curved surface of the column is provided with an annular groove. The ring is fixed in the annular groove. There is a gap between the inner curved surface of the annular groove and the inner curved surface of the ring. The ring is provided with a plurality of ventilation holes that are connected inside and outside. It also includes a negative pressure mechanism that generates negative pressure in the gap.

[0008] It also includes a paper conveying device, which includes two fixed rods fixed inside the inner cavity of the table. A rotating shaft is rotatably connected to the fixed rods. A feeding belt is connected between the rotating shaft and the suction wheel, and the upper edge of the feeding belt is located on the paper carrying table. A motor for driving the suction wheel to rotate is also provided inside the inner cavity of the table.

[0009] The paper carrier is also equipped with a baffle.

[0010] Preferably, the rotating shaft and the feeding belt are provided in two sets distributed in front and behind, and the two feeding belts are respectively located on the front and rear sides of the ring body.

[0011] Preferably, the upper side of the inner cavity of the platform is provided with an upward through groove for accommodating the feeding belt, the rotating shaft and the suction wheel. A connecting plate extending to the lower left is integrally formed on the right side of the through groove, and the connecting plate is located between the two feeding belts.

[0012] Preferably, the outer curved surface of the ring is coplanar with the outer curved surface of the cylinder.

[0013] Preferably, the negative pressure mechanism includes a pump installed in the inner cavity of the platform, an installation plate is fixedly installed in the inner cavity of the platform, and an inner cylinder is provided on the installation plate. One end of the suction wheel is connected to the output shaft in the motor, and the other end of the suction wheel is integrally formed with a connecting rod. The connecting rod is sleeved on the outside of the inner cylinder and can rotate relative to the inner cylinder.

[0014] The end of the connecting rod is provided with an air intake groove, which is connected to the annular groove. The air intake port in the pump is connected to the inner cylinder and the air intake groove through an air intake pipe.

[0015] Preferably, the paper carrier has two fixed plates distributed at the front and back. A crossbar is fixed on the fixed plate, a fixed platform is fixed on the crossbar, and a sliding rod is provided on the fixed platform. A lifting platform is slidably connected to the sliding rod, and an adjusting bolt threaded to the lifting platform is rotatably connected to the fixed platform. The baffle is fixed to the left side of the lifting platform and extends to the lower side of the crossbar.

[0016] Preferably, two sliders are slidably connected to the crossbar, and a locking bolt is internally threaded onto the slider. The locking bolt can abut against the crossbar, and a side baffle extending to the left is fixed on the slider. The side baffle is located on the front and rear sides of the fixed platform.

[0017] Preferably, two second sliders are slidably connected to the crossbar, and the second slider is internally threaded with a second locking bolt. The second locking bolt can abut against the crossbar, and a curved spring plate extending downward and bending to the right is fixed on the left side of the second slider.

[0018] Preferably, the suction wheel and the rotating shaft are respectively provided with positioning grooves in their curved surfaces, and the depth of the positioning grooves is not greater than the thickness of the feeding belt.

[0019] This utility model provides a negative pressure paper suction and transfer machine, which has the following beneficial effects:

[0020] This invention is used to transport single sheets of paper that are stacked. The invention uses a suction wheel to adsorb and transport the paper at the bottom. This method of paper transport is efficient and stable. In addition, a bending spring plate is provided in this application to avoid the situation where the paper is stacked and transported out.

[0021] This invention features an adjustable side plate, which allows the paper to be aligned and prevents it from shifting during transport. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0023] Figure 2 yes Figure 1 Enlarged schematic diagram of the central fixed platform;

[0024] Figure 3 yes Figure 1 A schematic diagram of the appearance of the middle crossbar from another perspective;

[0025] Figure 4 This is a schematic diagram of the left-side structure within this utility model;

[0026] Figure 5 yes Figure 4 Enlarged schematic diagram of the middle suction impeller.

[0027] In the picture:

[0028] 11. Paper carrier; 12. Suction wheel; 13. Fixing rod; 14. Feeding belt; 15. Motor; 16. Receiving plate; 21. Column; 22. Ring; 23. Ring groove; 31. Pump; 32. Mounting plate; 33. Inner cylinder; 34. Air groove; 35. Rotating shaft; 36. Connecting rod; 41. Fixing plate; 42. Crossbar; 43. Fixing platform; 44. Baffle; 45. Lifting platform; 51. No. 1 slider; 52. No. 1 locking bolt; 53. Side baffle; 54. Spring plate; 61. No. 2 slider; 62. No. 2 locking bolt; 91. Platform inner cavity. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Reference Figures 1-5 According to an embodiment of the negative pressure suction paper transfer machine of the present invention, it includes a paper carrier 11, the paper carrier 11 is provided with an inner cavity 91, and the upper side of the inner cavity 91 is provided with an upward through groove. The inner cavity 91 is equipped with a suction wheel 12 and a paper conveying device that extend through the through groove to the paper carrier 11.

[0034] The paper feeding device includes a fixed rod fixed in the inner cavity 91 of the table, and a rotating shaft 35 rotatably connected to the fixed rod and entering the through groove. A feeding belt 14 is connected between the suction wheel 12 and the rotating shaft 35, and the upper edge of the feeding belt 14 is located on the upper side of the paper table 11. A motor 15 for driving the suction wheel 12 to rotate is also provided in the inner cavity 91 of the table.

[0035] The specific structure of the suction wheel 12 is as follows: the suction wheel 12 includes a column 21 and a ring 22. The outer curved surface of the column 21 is provided with an annular groove 23. The ring 22 is fixed in the annular groove 23 and is coaxial with the annular groove 23. The outer curved surface of the ring 22 is coplanar with the outer curved surface of the column 21. There is a gap between the inner curved surface of the annular groove 23 and the inner curved surface of the ring 22. The ring 22 is provided with a plurality of ventilation holes that are connected inside and outside. It also includes a negative pressure mechanism that generates negative pressure in the gap. In addition, the paper carrier 11 is also equipped with a baffle 44.

[0036] When the paper carrier 11 is loaded with stacked papers, the bottommost paper will abut against the suction wheel 12. When it is necessary to transport the paper out individually, the motor 15 is energized to drive the feed belt 14 to move and drive the suction wheel 12 to rotate. The negative pressure mechanism creates a negative pressure inside the suction wheel 12 and adsorbs the paper located at the bottom. During this process, the suction wheel 12 will cooperate with the feed belt 14 to transport the bottommost paper to the right, while the remaining upper papers will not be displaced left or right under the action of the baffle 44.

[0037] In this embodiment, in order to ensure stable paper transport, the rotating shaft 35 and the feeding belt 14 are provided in two sets distributed in front and behind, and the two feeding belts 14 are respectively located on the front and rear sides of the ring body 22.

[0038] Furthermore, to prevent the feeding belt 14 from shifting back and forth on the column 21 during movement, positioning grooves are provided in the curved surfaces of the suction wheel 12 (the column 21) and the rotating shaft 35, respectively. The feeding belt 14 is embedded in the positioning groove to avoid shifting. In addition, in this embodiment, the depth of the positioning groove is less than the thickness of the feeding belt 14, that is, the feeding belt 14 extends outside the positioning groove.

[0039] In order to reduce paper wrinkling under the action of the suction wheel 12 and to prevent paper from getting stuck in the through groove, a connecting plate 16 extending to the lower left is integrally formed on the right side of the through groove. The connecting plate 16 is located between the two feeding belts 14 at the front and rear.

[0040] The negative pressure mechanism includes a pump 31 disposed within the inner cavity 91 of the platform. The connection between the pump 31 and the suction wheel 12 is as follows: Figure 5 As shown, an installation plate 32 is fixedly installed inside the inner cavity 91 of the table, and an inner cylinder 33 is provided on the installation plate 32. One end of the suction wheel 12 is connected to the output shaft inside the motor 15, and the other end of the suction wheel 12 is integrally formed with a connecting rod 36. An air suction groove 34 is provided inside the end of the connecting rod 36, and the connecting rod 36 is sleeved outside the inner cylinder 33, and the inner cylinder 33 is rotatably connected to the air suction groove 34. The air suction groove 34 is also connected to the annular groove 23. The air suction port inside the pump 31 is connected to the inner cylinder 33 through an air suction pipe. When the pump 31 is powered on, a negative pressure airflow is generated in the vent and adsorbs the paper. Air flows through the air suction groove 34 in the annular groove 23 to the inner cylinder 33 and is sucked in by the air suction pipe.

[0041] To allow the baffle 44 to be adjusted vertically to accommodate papers of different thicknesses, two fixed plates 41 are distributed front to back on the paper carrier 11. A crossbar 42 is fixed on the fixed plate 41, and a fixed platform 43 is fixed on the crossbar 42. A sliding rod is provided on the fixed platform 43, and a lifting platform 45 is slidably connected to the sliding rod. An adjusting bolt threaded to the lifting platform 45 is rotatably connected to the fixed platform 43. The baffle 44 is fixed to the left side of the lifting platform 45 and extends to the lower side of the crossbar 42. During working hours, personnel can adjust the vertical position of the lifting platform 45 and the baffle 44 by rotating the adjusting bolt.

[0042] To prevent the paper from shifting, two sliders 51 are slidably connected to the crossbar 42. Each slider 51 is internally threaded with a locking bolt 52, which abuts against the crossbar 42 to fix the position of the slider 51. A side baffle 53 extending to the left is fixed on the slider 51. The side baffle 53 is located on the front and rear sides of the fixed platform 43. The operator can loosen the locking bolt 52 and adjust the front and rear position of the side baffle 53 so that the front and rear sides of the paper stacked on the paper carrier 11 can be attached to the side baffle 53.

[0043] To avoid transporting multiple sheets of paper at once due to friction between the sheets, two second sliders 61 are slidably connected to the crossbar 42. The second slider 61 is internally threaded with a second locking bolt 62, which can abut against the crossbar 42. A curved spring plate 54 extending downward and bending to the right is fixed on the left side of the second slider 61. If two sheets of paper are transported on the suction wheel 12, the curved spring plate 54 will press down on the upper sheet and stop its movement.

[0044] It should be further noted that the connection between the motor 15 and the suction wheel 12 is such that a vertical plate is also fixed in the inner cavity 91 of the platform, and a controlled shaft is integrally formed on the left end of the suction wheel, as shown below. Figure 4 As shown, a pulley is mounted on the controlled shaft and the output shaft respectively, and the two pulleys are connected by a synchronous belt.

[0045] Furthermore, this invention can adjust the force of the suction wheel 12 pressing on the paper by adjusting the power of the pump 31, thereby reducing the wrinkles caused to the paper.

[0046] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A negative pressure paper conveying machine, comprising a paper carrier platform (11), wherein the paper carrier platform (11) is provided with an inner cavity (91), characterized in that: The inner cavity (91) of the table is equipped with a suction wheel (12) extending to the paper carrier (11). The suction wheel (12) includes a column (21) and a ring (22). The outer curved surface of the column (21) is provided with a ring groove (23). The ring (22) is fixed in the ring groove (23). There is a gap between the inner curved surface of the ring groove (23) and the inner curved surface of the ring (22). The ring (22) is provided with a plurality of ventilation holes that are connected inside and outside. It also includes a negative pressure mechanism that generates negative pressure in the gap. It also includes a paper conveying device, which includes two fixed rods fixed inside the inner cavity (91) of the table, and a rotating shaft (35) is rotatably connected to the outside of the fixed rods. A feeding belt (14) is connected between the rotating shaft (35) and the suction wheel (12), and the upper edge of the feeding belt (14) is located on the paper carrying table (11). The inner cavity (91) of the table is also provided with a motor (15) for driving the suction wheel (12) to rotate. The paper carrier (11) is also equipped with a baffle (44).

2. The negative pressure paper conveying machine according to claim 1, characterized in that: The rotating shaft (35) and the feeding belt (14) are provided in two sets distributed in front and behind, and the two feeding belts (14) are located on the front and back sides of the ring body (22) respectively.

3. The negative pressure paper conveying machine according to claim 2, characterized in that: The upper side of the inner cavity (91) of the platform is provided with an upward through groove for accommodating the feeding belt (14), the rotating shaft (35) and the suction wheel (12). A connecting plate (16) extending to the lower left is integrally formed on the right side of the through groove. The connecting plate (16) is located between the two feeding belts (14).

4. The negative pressure paper conveying machine according to claim 1, characterized in that: The outer curved surface of the ring (22) is coplanar with the outer curved surface of the cylinder (21).

5. A negative pressure paper conveying machine according to claim 1, characterized in that: The negative pressure mechanism includes a pump (31) located in the inner cavity (91) of the platform. A mounting plate (32) is also fixedly installed in the inner cavity (91), and an inner cylinder (33) is provided on the mounting plate (32). One end of the suction wheel (12) is connected to the output shaft in the motor (15), and the other end of the suction wheel (12) is integrally formed with a connecting rod (36). The connecting rod (36) is sleeved on the outer side of the inner cylinder (33) and can rotate relative to the inner cylinder (33). The end of the connecting rod is provided with an air intake groove (34) for accommodating the inner cylinder (33). The air intake groove (34) is connected to the annular groove (23). The air intake port in the pump (31) is connected to the inner cylinder (33) and the air intake groove (34) through an air intake pipe.

6. The negative pressure paper conveying machine according to claim 1, characterized in that: The paper carrier (11) has two fixed plates (41) distributed in front and behind. A crossbar (42) is fixed on the fixed plate (41). A fixed platform (43) is fixed on the crossbar (42). A sliding rod is provided on the fixed platform (43). A lifting platform (45) is slidably connected to the sliding rod. An adjusting bolt threaded to the lifting platform (45) is rotatably connected to the fixed platform (43). The baffle (44) is fixed to the left side of the lifting platform (45) and extends to the lower side of the crossbar (42).

7. A negative pressure paper conveying machine according to claim 6, characterized in that: Two sliders (51) are slidably connected to the crossbar (42) in the front and back. A locking bolt (52) is threaded onto the slider (51). The locking bolt (52) can abut against the crossbar (42). A side baffle (53) extending to the left is fixed on the slider (51). The side baffle (53) is located on the front and back sides of the fixed platform (43).

8. A negative pressure paper conveying machine according to claim 7, characterized in that: Two second sliders (61) are slidably connected to the crossbar (42) in the front and back. The second slider (61) is internally threaded with a second locking bolt (62). The second locking bolt (62) can abut against the crossbar (42). A curved spring plate (54) extending downward and bending to the right is fixed on the left side of the second slider (61).

9. A negative pressure paper conveying machine according to claim 1, characterized in that: The suction wheel (12) and the rotating shaft (35) are respectively provided with positioning grooves in their curved surfaces, and the depth of the positioning grooves is not greater than the thickness of the feeding belt (14).

Images