Front edge paper feeding device of die-cutting machine

Abstract

The invention relates to a front edge paper feeding device of a die-cutting machine, and relates to the technical field of paper production equipment, the front edge paper feeding device of the die-cutting machine comprises a bearing table, a plurality of pulleys are arranged at the feeding end of the bearing table, and the pulleys are located at the same height and rotationally connected to the bearing table; a plurality of pulleys are arranged at the feeding end of the bearing table, a pressing roller used for pressing a paperboard on the pulleys is arranged on one side of the feeding end of the bearing table, a traction assembly used for sucking the paperboard on the pulleys is arranged at the feeding end of the bearing table, a paper feeding belt is installed at the discharging end of the bearing table, and a transmission assembly is arranged on the bearing table. A pressing assembly is arranged above the discharging end of the bearing table, the bearing table is rotationally connected with a pair of rubber wheel sets used for conveying paperboards and a driving assembly used for driving the rubber wheel sets to rotate, and a limiting assembly used for limiting the number of the paperboards entering the rubber wheel sets at a time is arranged above the rubber wheel sets. The paper feeding device has the effect of improving the working efficiency and stability of the whole paper feeding device.

Description

Technical Field

[0001] This application relates to the technical field of paper production equipment, and particularly to a front-end paper feeding device for a die-cutting machine. Background Art

[0002] As an indispensable processing equipment in modern industry, the die-cutting machine is widely used in fields such as packaging and printing. Its main function is to precisely cut and form various materials. The front-end paper feeding device, as an important part of the die-cutting machine, directly affects the efficiency and accuracy of the entire die-cutting process. With the continuous growth of market demand, higher requirements are put forward for the working efficiency and reliability of the die-cutting machine, which promotes the continuous optimization and innovation of the front-end paper feeding technology. By improving the design of the paper feeding mechanism, the stability of cardboard transportation can be significantly improved, thereby enhancing production efficiency and product quality.

[0003] In the prior art, in order to solve the stability problem during the cardboard transportation process, various means are usually adopted for improvement. For example, a pressing device is added to prevent the cardboard from shifting during transportation. However, the paper feeding devices in the prior art still have some deficiencies in actual applications. Especially when dealing with cardboard feeding, it is easy for multiple pieces of cardboard to enter simultaneously, resulting in paper jams, and it is difficult to ensure both the stability of the cardboard and the transportation efficiency at the same time. Summary of the Invention

[0004] In order to improve the working efficiency and stability of the entire paper feeding device, this application provides a front-end paper feeding device for a die-cutting machine.

[0005] The front-end paper feeding device for a die-cutting machine provided by this application adopts the following technical solutions: A front-end paper feeding device for a die-cutting machine includes a bearing table. A plurality of pulleys are provided at the feeding end of the bearing table. The plurality of pulleys are located at the same height and are rotatably connected to the bearing table. A pressure roller is provided on one side of the feeding end of the bearing table for pressing the cardboard onto the plurality of pulleys. A traction assembly is provided at the feeding end of the bearing table for sucking the cardboard onto the pulleys. A paper feeding belt is installed at the discharging end of the bearing table. A transmission assembly is provided on the bearing table for driving the paper feeding belt to drive. A pressing assembly is provided above the discharging end of the bearing table for pressing the cardboard onto the paper feeding belt. A pair of rubber wheel groups for conveying the cardboard are rotatably connected to the bearing table, and a driving assembly for driving the rubber wheel groups to rotate is provided. A limiting assembly is provided above the rubber wheel groups for restricting the number of cardboard entering the inside of the rubber wheel groups at one time.

[0006] By adopting the above technical solution, the cardboard can be steadily pressed onto the pulley by the pressing roller during the feeding process, ensuring the smooth entry of the cardboard into the device. Meanwhile, the suction force generated by the traction assembly stably adsorbs the cardboard onto the surface of the pulley, further improving the reliability of feeding. Subsequently, the paper feeding belt realizes continuous and stable transmission under the drive of the transmission assembly, ensuring the accurate positioning of the cardboard during the conveying process. The pressing assembly above the discharge end can effectively press the cardboard onto the paper feeding belt, preventing the cardboard from shifting or slipping. In addition, the rubber wheel group realizes efficient transmission under the action of the drive assembly, ensuring the smooth transition of the cardboard to the subsequent process. The setting of the limiting assembly effectively limits the number of cardboard entering the rubber wheel group at one time, reducing the paper jamming phenomenon caused by the superposition of multiple cardboard, thereby significantly improving the working efficiency and stability of the entire paper feeding device.

[0007] Optionally, the traction assembly includes a negative pressure fan and an air collecting hood. The negative pressure fan is connected to the air collecting hood in communication. The air collecting hood and the negative pressure fan are fixedly connected inside the bearing platform, and a plurality of the pulleys are placed above the air collecting hood.

[0008] By adopting the above technical solution, the setting of the negative pressure fan and the air collecting hood can form a stable negative pressure environment, effectively adsorbing the lowermost cardboard among multiple cardboard onto the pulley, ensuring the smooth and accurate traction of the cardboard during the feeding process, thereby improving the stability and accuracy of paper feeding.

[0009] Optionally, the transmission assembly includes a transmission roller rotatably connected to the end of the discharge end of the bearing platform. The paper feeding belt is sleeved on the transmission roller. A transmission motor for driving the transmission roller to rotate is fixedly connected to the bearing platform, and the transmission motor is shaft-connected to the transmission roller.

[0010] By adopting the above technical solution, the transmission motor can drive the transmission roller to rotate, thereby driving the paper feeding belt to run smoothly, ensuring a smoother and more accurate conveying process of the cardboard at the discharge end.

[0011] Optionally, the rubber wheel group includes a plurality of upper rubber wheels arranged at the same height and coaxially, and a plurality of lower rubber wheels arranged at the same height and coaxially. The drive assembly includes an upper transmission shaft passing through and fixedly connected to the plurality of upper rubber wheels, and a lower transmission shaft passing through and fixedly connected to the lower rubber wheels. The upper transmission shaft and the lower transmission shaft are both rotatably connected to the bearing platform. A first drive motor for driving the lower transmission shaft to rotate and a second drive motor for driving the upper transmission shaft to rotate are provided on one side of the bearing platform.

[0012] By adopting the above technical solution, the coaxial arrangement of multiple gluing wheels and lower gluing wheels ensures the smoothness of cardboard transmission. The upper transmission shaft and the lower transmission shaft are respectively fixedly connected to the upper gluing wheel and the lower gluing wheel, ensuring the reliability of power transmission. The first driving motor and the second driving motor respectively drive the upper transmission shaft and the lower transmission shaft to rotate, realizing the independent control of the upper gluing wheel and the lower gluing wheel. Thus, the conveying speed and pressure of the cardboard can be adjusted according to actual needs, improving the adaptability and working efficiency of the equipment.

[0013] Optionally, the limiting component includes a support frame erected above the bearing platform. A plurality of fixing plates arranged along the length direction of the support frame are fixedly connected to the support frame. A limiting groove is formed in the fixing plate, and a limiting plate is slidably connected in the limiting groove. A height-adjusting component for adjusting the height of the limiting plate is arranged on the support frame.

[0014] By adopting the above technical solution, the limiting component can effectively limit the number of cardboard sheets entering the inside of the gluing wheel group at one time. Specifically, the support frame provides a stable installation foundation for the fixing plate and the limiting plate, ensuring the reliability of the structure. The cooperation between the limiting groove on the fixing plate and the slidably connected limiting plate can adjust the position of the limiting plate according to actual needs, thereby accurately controlling the number of cardboard sheets entering. The height-adjusting component further improves the flexibility and accuracy of the height adjustment of the limiting plate, enabling the device to adapt to cardboard of different thicknesses or sizes and enhancing the stability and efficiency of the overall paper feeding process.

[0015] Optionally, an operation box body is arranged on one side of the bearing platform. A partition is fixedly connected inside the operation box body. The height-adjusting component includes a rotating rod passing through and rotatably connected to the side wall of the operation box body. A worm is rotatably connected inside the partition. One end of the rotating rod placed inside the operation box body is axially connected to the worm. A worm gear is meshed on one side of the worm. The worm gear is rotatably connected to the partition. An adjusting rod is rotatably connected to the support frame. The adjusting rod is fixedly connected to the worm gear. A plurality of cams are fixedly connected to the adjusting rod. The cams correspond to the limiting plates one by one. A lifting groove is formed on one side of the limiting plate close to the cam. The eccentric end of the cam is placed inside the limiting groove.

[0016] By adopting the above technical solution, the rotation of the rotating rod drives the worm to rotate. The meshing transmission between the worm and the worm gear further drives the adjusting rod to rotate. The plurality of cams on the adjusting rod rotate accordingly. The eccentric ends of the cams slide inside the limiting groove and push the limiting plate to rise and fall along the limiting groove on the fixing plate, causing the limiting plate to rise and fall, thereby realizing the precise control of the height of the limiting plate. The flexibility of the position adjustment of the limiting plate is improved.

[0017] Optionally, the pressing assembly includes a lower pressing frame body rotatably connected to the carrying platform. A plurality of pressing wheels are provided below the lower pressing frame body. A connecting rod is provided between the pressing wheel and the lower pressing frame body. The pressing wheel is rotatably connected to one end of the connecting rod. The end of the connecting rod away from the pressing wheel is rotatably connected to the lower pressing frame body. Adjusting bolts are provided above both sides of the rotation point of the connecting rod and the lower pressing frame body. The adjusting bolts are threadedly connected to the lower pressing frame body, and the rod portion of the adjusting bolt abuts against the upper side wall of the connecting rod.

[0018] By adopting the above technical solution, the pressing assembly can effectively ensure the stability and accuracy of the cardboard during the paper feeding process. Specifically, the lower pressing frame body is connected to a plurality of pressing wheels through the connecting rod, enabling the pressing wheels to flexibly adjust their positions to adapt to cardboard of different thicknesses. At the same time, the design of the adjusting bolts allows for precise adjustment of the pressure of the pressing wheels, thereby preventing the cardboard from shifting or being damaged during the paper feeding process, and further improving the working efficiency and reliability of the paper feeding device.

[0019] Optionally, lowering cylinders are provided at both ends of the lower pressing frame body. The bottom end of the lowering cylinder is hinged to the carrying platform, and the other end of the lowering cylinder is hinged to the lower pressing frame body.

[0020] By adopting the above technical solution, the setting of the lowering cylinders can realize the automatic lifting adjustment of the lower pressing frame body, thereby flexibly adjusting the pressure between the pressing wheels and the paper feeding belt according to actual needs, and improving the stability of cardboard transportation.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing pulleys, pressure rollers and a traction assembly, the cardboard is stably fixed on the pulleys by means of negative pressure adsorption, effectively preventing the cardboard from shifting during the feeding process and improving the stability of cardboard transportation; 2. The transmission assembly is used to drive the paper feeding belt to drive, and the pressing assembly is used to press the cardboard against the paper feeding belt, ensuring that the cardboard can be smoothly and efficiently transported from the feeding end to the discharging end, improving the transportation efficiency; 3. A rubber wheel group and a limiting assembly are provided. The number of cardboard sheets entering the rubber wheel group is limited by the limiting plate, avoiding the phenomenon of paper jamming caused by multiple cardboard sheets entering at the same time, thereby ensuring the continuity of the die-cutting process and the reliability of equipment operation. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the structural schematic diagram of the traction assembly after hiding part of the carrying platform in the embodiment of the present application; Figure 3 is Figure 2Schematic enlarged view of the structure of part A; Figure 4 Schematic diagram of the structure of the rubber wheel assembly according to an embodiment of the present application; Figure 5 Schematic diagram of the structure of the first driving motor according to an embodiment of the present application.

[0023] In the figure, 1 is a carrier table; 2 is a pulley; 3 is a pressure roller; 4 is a traction assembly; 41 is an air collecting hood; 42 is a negative pressure fan; 5 is a paper feeding belt; 6 is a transmission assembly; 61 is a transmission roller; 62 is a transmission motor; 7 is a pressing assembly; 71 is a lower pressing frame body; 72 is a pressing wheel; 73 is a connecting rod; 74 is an adjusting bolt; 8 is a driving assembly; 81 is an upper transmission shaft; 82 is a lower transmission shaft; 83 is a first driving motor; 84 is a second driving motor; 9 is a limiting assembly; 91 is a support frame; 92 is a fixing plate; 921 is a limiting groove; 93 is a limiting plate; 931 is a lifting groove; 10 is a rubber wheel group; 101 is an upper rubber wheel; 102 is a lower rubber wheel; 11 is a height adjusting assembly; 111 is a rotating rod; 112 is a worm; 113 is a worm gear; 114 is an adjusting rod; 115 is a cam; 12 is an operation box body; 121 is a partition board; 13 is a lower cylinder. Detailed implementation manners

[0024] The following Figure 1 - Figure 5 in conjunction with the attached

[0025] Embodiments of the present application are as follows: A front paper feeding device for a die cutting machine, referring to Figure 1 and Figure 2 , includes a carrier table 1. The carrier table 1 is set in a cuboid shape. A plurality of pulleys 2 are provided at the feeding end of the carrier table 1. In this embodiment, the pulleys 2 are set in two columns. The plurality of pulleys 2 are at the same height and are rotatably connected to the carrier table 1. Part of the side wall above the pulleys 2 is placed outside the carrier table 1. A motor for driving the pulleys 2 to rotate is installed on the carrier table 1. The motor is shaft-connected to the plurality of pulleys 2 in the same column.

[0026] A pressure roller 3 for pressing the cardboard against the plurality of pulleys 2 is provided on one side of the feeding end of the carrier table 1. The pressure roller 3 is installed on the operation table of the previous process. A traction assembly 4 for sucking the cardboard onto the pulleys 2 is provided at the feeding end of the carrier table 1.

[0027] The traction assembly 4 includes a negative pressure fan 42 and an air collecting hood 41. The negative pressure fan 42 is communicated with the air collecting hood 41 and both are placed inside the carrier table 1. The air collecting hood 41 and the negative pressure fan 42 are fixedly connected inside the carrier table 1. The plurality of pulleys 2 are placed above the air collecting hood 41. Then, the negative pressure fan 42 is started, and the negative pressure fan 42 can adsorb the cardboard placed on the plurality of pulleys 2 onto the plurality of pulleys 2, so that it is in close contact with the pulleys 2.

[0028] Reference Figure 2 、 Figure 3 and Figure 4 As shown in FIGS. 0, 1, and 2, a paper feeding belt 5 is installed at the discharging end of the carrying table 1. A plurality of paper feeding belts 5 are arranged along the end face of the discharging end of the carrying table 1. A transmission assembly 6 for driving the paper feeding belt 5 to move is provided on the carrying table 1. The transmission assembly 6 includes a transmission roller 61 rotatably connected to the end of the discharging end of the carrying table 1. There are two transmission rollers 61, and the paper feeding belt 5 is sleeved on the two transmission rollers 61. A transmission motor 62 for driving the transmission roller 61 to rotate is fixedly connected to the carrying table 1. The transmission motor 62 is axially connected to the transmission roller 61. Then, by starting the transmission motor 62, the transmission motor 62 can drive the transmission roller 61 to rotate, and further drive the paper feeding belt 5 to move.

[0029] Above the discharging end of the carrying table 1, a pressing assembly 7 for pressing the cardboard onto the paper feeding belt 5 is provided. The pressing assembly 7 includes a lower pressing frame body 71 rotatably connected to the carrying table 1. The lower pressing frame body 71 covers the upper part of the discharging end of the entire carrying table 1. A plurality of pressing wheels 72 are provided below the lower pressing frame body 71. The plurality of pressing wheels 72 are at the same height and are arranged equidistantly along the width direction of the lower pressing frame body 71. A connecting rod 73 is provided between the pressing wheel 72 and the lower pressing frame body 71. The pressing wheel 72 is rotatably connected to one end of the connecting rod 73. The other end of the connecting rod 73 away from the pressing wheel 72 is rotatably connected to the lower pressing frame body 71. Adjusting bolts 74 are provided above both sides of the rotation point of the connecting rod 73 and the lower pressing frame body 71. The adjusting bolts 74 are threadedly connected to the lower pressing frame body 71. The rod portion of the adjusting bolt 74 abuts against the upper side wall of the upper end of the connecting rod 73.

[0030] Thus, by rotating the adjusting bolt 74, the height of the rod portion of the adjusting bolt 74 on the lower pressing frame body 71 can be changed, thereby changing the angle of the connecting rod 73, and further changing the pressing force of the pressing wheel 72 on the cardboard. Lowering cylinders 13 are provided at both ends of the lower pressing frame body 71. The bottom end of the lowering cylinder 13 is hinged to the carrying table 1, and the other end of the lowering cylinder 13 is hinged to the lower pressing frame body 71. Thus, the automatic lifting of the lower pressing frame body 71 can be realized by the telescopic movement of the lower cylinder.

[0031] A pair of rubber wheel sets 10 for conveying cardboard are rotatably connected to the carrying table 1. The rubber wheel sets 10 include a plurality of upper rubber wheels 101 located at the same height and coaxially arranged and a plurality of lower rubber wheels 102 located at the same height and coaxially arranged. The upper rubber wheels 101 and the lower rubber wheels 102 correspond to each other one by one, and a gap for the cardboard to pass through is left between the upper rubber wheels 101 and the lower rubber wheels 102.

[0032] On one side of the carrier table 1, there is an operation box body 12. On the carrier table 1, there is a driving assembly 8 for driving the rubber wheel group 10 to rotate. The driving assembly 8 includes an upper transmission shaft 81 passing through and fixedly connected to a plurality of upper rubber wheels 101. A same lower transmission shaft 82 is passed through and fixedly connected to the lower rubber wheels 102. Both the upper transmission shaft 81 and the lower transmission shaft 82 are rotatably connected to the carrier table 1. On one side of the carrier table 1, there is a first driving motor 83 for driving the lower transmission shaft 82 to rotate and a second driving motor 84 for driving the upper transmission shaft 81 to rotate. Both the first driving motor 83 and the second driving motor 84 are installed in the operation box body 12.

[0033] Furthermore, the first driving motor 83 and the second driving motor 84 can be started synchronously, so that the first driving motor 83 and the second driving motor 84 drive the upper rubber wheels 101 and the lower rubber wheels 102 to rotate synchronously, enabling the upper rubber wheels 101 and the lower rubber wheels 102 to bite the cardboard and drive the cardboard to be conveyed.

[0034] Above the rubber wheel group 10, there is a limiting assembly 9 for limiting the number of cardboard sheets entering the inside of the rubber wheel group 10 at one time. The limiting assembly 9 includes a support frame 91 erected above the carrier table 1. A plurality of fixing plates 92 arranged along the length direction of the support frame 91 are fixedly connected to the support frame 91. A limiting groove 921 is formed in the fixing plate 92. A limiting plate 93 is slidably connected in the limiting groove 921. On the support frame 91, there is a height-adjusting assembly 11 for adjusting the height of the limiting plate 93.

[0035] Refer to Figure 2 、 Figure 4 and Figure 5 As shown in, a partition 121 is fixedly connected in the operation box body 12. The height-adjusting assembly 11 includes a rotating rod 111 passing through and rotatably connected to the side wall of the operation box body 12. A worm 112 is rotatably connected in the partition 121. One end of the rotating rod 111 placed inside the operation box body 12 is axially connected to the worm 112. A worm gear 113 is meshed with one side of the worm 112. The worm gear 113 is rotatably connected to the partition 121. An adjusting rod 114 is rotatably connected to the support frame 91. The adjusting rod 114 is fixedly connected to the worm gear 113. A plurality of cams 115 are fixedly connected to the adjusting rod 114. The cams 115 correspond to the limiting plates 93 one by one. A lifting groove 931 is formed on one side of the limiting plate 93 close to the cam 115. The eccentric end of the cam 115 is placed inside the limiting groove 921.

[0036] Thus, by controlling the rotation of the rotating rod 111, the rotating rod 111 drives the worm 112 to rotate. The meshing transmission between the worm 112 and the worm gear 113 further drives the adjusting rod 114 to rotate. The plurality of cams 115 on the adjusting rod 114 rotate accordingly. The eccentric ends of the cams 115 slide inside the limiting groove 921 and push the limiting plate 93 to rise and fall along the limiting groove 921 on the fixing plate 92, enabling the plurality of limiting plates 93 to rise and fall.

[0037] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A front-end paper feeding device for a die-cutting machine, characterized in that, It includes a loading platform (1). A plurality of pulleys (2) are provided at the feeding end of the loading platform (1). The plurality of pulleys (2) are at the same height and are rotatably connected to the loading platform (1). A pressure roller (3) for pressing the cardboard against the plurality of pulleys (2) is provided on one side of the feeding end of the loading platform (1). A traction assembly (4) for sucking the cardboard onto the pulleys (2) is provided at the feeding end of the loading platform (1). A paper feeding belt (5) is installed at the discharging end of the loading platform (1). A transmission assembly (6) for driving the paper feeding belt (5) to transmit is provided on the loading platform (1). A pressing assembly (7) for pressing the cardboard against the paper feeding belt (5) is provided above the discharging end of the loading platform (1). A pair of rubber wheel groups (10) for conveying the cardboard and a driving assembly (8) for driving the rubber wheel groups (10) to rotate are rotatably connected to the loading platform (1). A limiting assembly (9) for limiting the number of cardboard sheets entering the inside of the rubber wheel groups (10) at one time is provided above the rubber wheel groups (10).

2. The front paper feeding device of a die-cutting machine according to claim 1, characterized in that, The traction assembly (4) includes a negative pressure fan (42) and an air collecting hood (41). The negative pressure fan (42) is communicated with the air collecting hood (41). The air collecting hood (41) and the negative pressure fan (42) are fixedly connected inside the loading platform (1), and the plurality of pulleys (2) are placed above the air collecting hood (41).

3. A front paper feeding device for a die-cutting machine according to claim 1, characterized in that, The transmission assembly (6) includes a transmission roller (61) rotatably connected to the end of the discharging end of the loading platform (1). The paper feeding belt (5) is sleeved on the transmission roller (61). A transmission motor (62) for driving the transmission roller (61) to rotate is fixedly connected to the loading platform (1). The transmission motor (62) is axially connected to the transmission roller (61).

4. The front paper feeding device of a die cutting machine according to claim 1, characterized in that, The rubber wheel group (10) includes a plurality of upper rubber wheels (101) arranged coaxially at the same height and a plurality of lower rubber wheels (102) arranged coaxially at the same height. The driving assembly (8) includes an upper transmission shaft (81) passing through and fixedly connected to the plurality of upper rubber wheels (101). A lower transmission shaft (82) is fixedly connected to the lower rubber wheels (102) by passing through. The upper transmission shaft (81) and the lower transmission shaft (82) are both rotatably connected to the loading platform (1). A first driving motor (83) for driving the lower transmission shaft (82) to rotate and a second driving motor (84) for driving the upper transmission shaft (81) to rotate are provided on one side of the loading platform (1).

5. The front paper feeding device of a die-cutting machine according to claim 4, characterized in that, The limiting assembly (9) includes a support frame (91) erected above the loading platform (1). A plurality of fixing plates (92) arranged along the length direction of the support frame (91) are fixedly connected to the support frame (91). A limiting groove (921) is formed in the fixing plate (92). A limiting plate (93) is slidably connected in the limiting groove (921). A height adjusting assembly (11) for adjusting the height of the limiting plate (93) is provided on the support frame (91).

6. The front-end paper feeding device of a die-cutting machine according to claim 5, characterized in that One side of the bearing table (1) is provided with an operation box body (12). A partition plate (121) is fixedly connected inside the operation box body (12). The height adjustment assembly (11) includes a rotating rod (111) that penetrates and is rotatably connected to the side wall of the operation box body (12). A worm (112) is rotatably connected inside the partition plate (121). One end of the rotating rod (111) placed inside the operation box body (12) is axially connected to the worm (112). A worm gear (113) is meshed on one side of the worm (112). The worm gear (113) is rotatably connected to the partition plate (121). An adjusting rod (114) is rotatably connected to the support frame (91). The adjusting rod (114) is fixedly connected to the worm gear (113). A plurality of cams (115) are fixedly connected to the adjusting rod (114). The cams (115) correspond to the limiting plates (93) one by one. A lifting groove (931) is formed on one side of the limiting plate (93) close to the cam (115). The eccentric end of the cam (115) is placed inside the limiting groove (921).

7. A front-end paper feeding device for a die-cutting machine according to claim 1, characterized in that, The pressing assembly (7) includes a downward pressing frame body (71) rotatably connected to the bearing table (1). A plurality of pressing wheels (72) are arranged below the downward pressing frame body (71). A connecting rod (73) is arranged between the pressing wheel (72) and the downward pressing frame body (71). The pressing wheel (72) is rotatably connected to one end of the connecting rod (73). The other end of the connecting rod (73) far from the pressing wheel (72) is rotatably connected to the downward pressing frame body (71). Adjusting bolts (74) are arranged above both sides of the rotation point of the connecting rod (73) and the downward pressing frame body (71). The adjusting bolts (74) are threadedly connected to the downward pressing frame body (71). The rod part of the adjusting bolt (74) abuts against the upper side wall of the connecting rod (73).

8. A front paper feeding device for a die-cutting machine according to claim 7, characterized in that, Lowering cylinders (13) are arranged at both ends of the downward pressing frame body (71). The bottom end of the lowering cylinder (13) is hinged to the bearing table (1). The other end of the lowering cylinder (13) is hinged to the downward pressing frame body (71).

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