A feeding mechanism for a cutting machine

Abstract

The application relates to the technical field of cutting machines, and particularly provides a feeding mechanism for a cutting machine, which comprises a rack and a paper separating assembly, the paper separating assembly comprises a suction disc piece, a limiting plate and a limiting spring, one side of the rack is provided with a feeding area, the suction disc piece is used for sucking the upper surface of the paperboard in the cutting paperboard which is arranged in a stacking mode in the feeding area and moving upwards, the suction disc piece is used for adsorbing the upper surface of the paperboard in the cutting paperboard which is arranged in a stacking mode in the feeding area, after the adsorption, the suction disc cylinder of the suction disc piece drives the paperboard to move upwards, the edge of the paperboard pressed by the limiting plate is blocked by the limiting plate to generate bending, the upper surface paperboard and the second layer paperboard generate a gap to release the state that the second layer paperboard is attached to the upper surface paperboard, reliable separation between the upper surface paperboard and the second layer paperboard is guaranteed, and the paperboard is outputted one by one.

Description

Technical Field

[0001] This invention relates to the field of cutting machine technology, and more specifically, to a feeding mechanism for a cutting machine. Background Technology

[0002] With the development of technology and the continuous improvement of industrial automation, new paper cutting machines are gradually replacing traditional manual cutting methods. Paper cutting machines can cut various types of paper, such as craft paper, packaging boxes, book covers, and self-adhesive labels, offering higher quality and processing efficiency than manual cutting.

[0003] To improve processing efficiency, cardboard cutting machines are typically equipped with automatic paper feeding devices that transport cardboard to the cutting platform. In existing technology, cardboard is stacked in the feeding area, and a vacuum suction device picks up the top layer of cardboard. The vacuum suction device then moves to place the cardboard onto the cutting platform. However, relying on a suction device to pick up cardboard can easily lead to the simultaneous picking up of multiple sheets, especially for permeable cardboard. The paper feeding device cannot guarantee that only one sheet is fed at a time, and excess cardboard placed on the cutting platform results in material loss. Summary of the Invention

[0004] The problem solved by this invention is that existing graphic cutting machines, which use a vacuum adsorption device to adsorb the top layer of cardboard, are prone to picking up multiple sheets of paper at the same time.

[0005] To address the above problems, the present invention proposes the following technical solution:

[0006] A feeding mechanism for a cutting machine includes a frame and a paper separating assembly. The paper separating assembly includes a suction cup, a limiting plate, and a limiting spring. A feeding area is provided on one side of the frame. The suction cup is used to pick up the upper surface of the paperboard to be cut, which is stacked in the feeding area, and move it upward.

[0007] A baffle is provided on the frame, and a limiting plate is rotatably disposed on the upper end face of the baffle. The limiting plate extends to the top of the feeding area to press the edge of the cardboard. A limiting spring is connected between the baffle and the limiting plate and is used to keep the limiting plate pressing the edge of the cardboard.

[0008] The feeding mechanism for a cutting machine provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art:

[0009] Under normal conditions, the stacked cardboard sheets to be cut are placed in the feeding area on one side of the frame, with the limiting plate partially pressing against the edge of the upper cardboard. During operation, the suction cup moves above the feeding area and adsorbs the upper cardboard sheet among the stacked cardboard sheets. After adsorption, the suction cup cylinder moves the cardboard upward, causing the edge of the cardboard pressed by the limiting plate to bend. This creates a gap between the upper cardboard sheet and the second layer of cardboard, releasing the adhesion between them and ensuring reliable separation. This allows for sheet-by-sheet output of the cardboard. The upper cardboard sheet is then adsorbed by the suction cup, and the second layer of cardboard falls onto the upper surface of the stacked cardboard sheets to be cut, facilitating the next adsorption by the suction cup. During the process of the suction cup adsorbing the upper cardboard and moving it upward, the other side of the cardboard is bent due to the obstruction of the limiting plate. At the same time, the cardboard also causes the limiting plate to flip. Due to the setting of the limiting spring, the limiting plate is not flipped too much, and the limiting plate can be reset in time after the upper cardboard is removed. The limiting spring and the limiting plate work together to limit the upward force of the upper cardboard, achieving a buffer upward movement. The movable limiting plate helps to avoid the problem of the upper cardboard being pressed by the fixed limiting plate and folding.

[0010] Preferably, the feeding mechanism for the cutting machine further includes a feeding assembly, which includes a movable plate disposed in the feeding area and a feeding electric push rod. The feeding electric push rod is mounted on the frame and located below one side of the stop. One end of the movable plate along a first direction is rotatably connected to the upper end of the frame away from the stop, and the other end of the movable plate along the first direction is hinged to the feeding electric push rod. The feeding electric push rod is used to drive the movable plate to rotate to move closer to or away from the limiting plate. The cardboard to be cut, which is stacked, is placed on the movable plate.

[0011] Preferably, the feeding assembly further includes an arc-shaped baffle, which is disposed on the side of the baffle facing the feeding area. The arc-shaped baffle is clearance-fitted with the other end of the movable plate along the first direction, and the circle containing the arc-shaped structure of the arc-shaped baffle is concentric with the circle generated by the rotation of the movable plate.

[0012] Preferably, the feeding assembly further includes an adjusting baffle, a fixed slide rail, a sliding slide rail, a sliding plate, a sliding block, and adjusting bolts. The movable plate is symmetrically fixed at both ends along the second direction with the fixed slide rail perpendicular to the baffle. The sliding slide rail is located between the two fixed slide rails and is slidably connected to the two fixed slide rails along the second direction.

[0013] The adjusting baffle is used to be set on the sliding rail. The two ends of the sliding rail are respectively connected to the sliding plate. The sliding plate is provided with a sliding plate screw hole. The two sliding blocks are respectively slidably connected to the two fixed rails. The sliding block is provided with a slider screw hole. The adjusting bolt is used to pass through the sliding plate screw hole and the slider screw hole to connect the sliding plate to the sliding block.

[0014] Preferably, the feeding assembly further includes a sensor and a controller. The sensor is disposed on both sides of the frame and is used to detect the height of the upper surface of the cardboard in the stacked cardboard to be cut on the movable plate. The sensor is signal-connected to the controller, which is used to control the operation of the feeding electric push rod.

[0015] Preferably, the paper separating assembly further includes a fan, the interior of the baffle forms a ventilation duct, and the fan is installed at the lower end of the baffle; the upper end of the arc-shaped baffle is provided with a plurality of air outlets evenly spaced, the side of the air outlet facing the baffle is connected to the ventilation duct, and the side of the air outlet away from the baffle is facing the stacked paperboards to be cut.

[0016] Preferably, the air outlet extends through the upper edge of the arc-shaped baffle; the paper separating assembly further includes a preventive plate evenly spaced at the lower end of the limiting plate. When the limiting plate is horizontally positioned at the upper end of the baffle, the preventive plate is located at the air outlet, and the side of the preventive plate facing the feeding area is flush with the inner surface of the arc-shaped baffle.

[0017] Preferably, the paper separating assembly further includes a reset electric push rod, which is disposed at the lower end of the baffle, and the upper end of the reset electric push rod extends into the baffle and is hinged to the lower end face of the limiting plate.

[0018] Preferably, the suction cup component includes a suction device, a suction cup cylinder, and a suction cup body. The suction device is connected to the suction cup cylinder via a flexible hose. The extension rod of the suction cup cylinder is provided with a vent hole. The suction cup body is connected to the extension rod and communicates with the vent hole.

[0019] The paper separating assembly also includes a pressure bar, which is installed on one side of the suction cup cylinder. The lower end of the pressure bar is used to abut against the cardboard adsorbed by the suction cup body.

[0020] Preferably, the movable plate is further provided with a drain hole, the position of which corresponds to the position of the suction cup body. Attached Figure Description

[0021] Figure 1 This is a schematic cross-sectional view of the feeding mechanism for a cutting machine according to an embodiment of the present invention;

[0022] Figure 2 Embodiments of the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0023] Figure 3 Embodiments of the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0024] Figure 4 This is a schematic diagram of the overall structure of the feeding mechanism for a cutting machine according to an embodiment of the present invention;

[0025] Figure 5 Embodiments of the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0026] Figure 6 Embodiments of the present invention Figure 4 A magnified schematic diagram of the structure at point D.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Frame, 10. Baffle, 2. Paper separating assembly, 21. Suction cup assembly, 210. Switch, 211. Suction cup cylinder, 212. Suction cup body, 22. Pressure rod, 23. Limit plate, 24. Limit spring, 25. Fan, 26. Prevent plate, 27. Reset electric push rod, 3. Feeding assembly, 30. Air outlet, 31. Movable plate, 310. Leakage hole, 32. Feeding electric push rod, 33. Arc-shaped baffle, 34. Adjusting baffle, 35. Fixed slide rail, 36. Sliding slide rail, 37. Sliding plate, 38. Adjusting bolt, 39. Sensor. Detailed Implementation

[0029] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., 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 invention 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 invention.

[0031] It should be noted that in the XYZ coordinate system provided in this article, the positive direction of the X-axis represents the right, and the negative direction of the X-axis represents the left; the positive direction of the Y-axis represents the front, and the negative direction of the Y-axis represents the back; the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom. The meanings of the Z-axis, X-axis, and Y-axis are only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 the present invention.

[0032] See Figures 1-6 The present invention provides a feeding mechanism for a cutting machine, comprising a frame 1 and a paper separating assembly 2. The paper separating assembly 2 includes a suction cup 21, a limiting plate 23, and a limiting spring 24. A feeding area is provided on one side of the frame 1. The suction cup 21 is used to pick up the upper surface of the paperboard to be cut, which is stacked in the feeding area, and move it upward. A baffle 10 is provided on the frame 1. The limiting plate 23 is rotatably disposed on the upper end face of the baffle 10, and the limiting plate 23 extends partially above the feeding area to press the edge of the paperboard. The limiting spring 24 is connected between the baffle 10 and the limiting plate 23 and is used to keep the limiting plate 23 pressing the edge of the paperboard.

[0033] Specifically, the limiting plate 23 includes a side plate and a horizontal plate, which are in an "L" shape. The side plate of the limiting plate 23 is rotatably connected to the side wall of the baffle 10 via a hinge. An installation rod is provided inside the baffle 10. The lower end of the limiting spring 24 is connected to the installation rod, and the other end of the limiting spring 24 is connected to the lower end face of the horizontal plate of the limiting plate 23. The end of the horizontal plate away from the side plate extends above the feeding area and presses the upper edge of the stacked cardboard to be cut.

[0034] In this embodiment, under normal conditions, the stacked cardboard to be cut is placed in the feeding area on one side of the frame 1, and part of the limiting plate 23 presses against the edge of the upper cardboard. During operation, the suction cup 21 moves above the feeding area and adsorbs the upper cardboard of the stacked cardboard to be cut in the feeding area. After adsorbing the cardboard, the suction cup cylinder 211 of the suction cup 21 moves the cardboard upward, causing the edge of the cardboard pressed by the limiting plate 23 to bend due to the obstruction of the limiting plate 23. This creates a gap between the upper cardboard and the second layer cardboard, releasing the adhesion between the second layer cardboard and the upper cardboard, ensuring reliable separation between the upper cardboard and the second layer cardboard, and realizing the output of cardboard sheet by sheet. The upper cardboard is adsorbed by the suction cup 21, and the second layer cardboard falls to the upper surface of the stacked cardboard to be cut, so that the suction cup 21 can adsorb it again. During the process of the suction cup 21 adsorbing the upper surface cardboard and moving it upward, one side of the cardboard is blocked by the limiting plate 23 and bends. At the same time, the cardboard also causes the limiting plate 23 to flip. Due to the setting of the limiting spring 24, the limiting plate 23 is not flipped too much, and the limiting plate 23 can be reset in time after the upper surface cardboard is removed. The limiting spring 24 and the limiting plate 23 cooperate to limit the upward force of the upper surface cardboard, realizing buffering upward. The movable limiting plate 23 helps to avoid the problem of the upper surface cardboard being pressed by the fixed limiting plate 23 and folding.

[0035] Preferably, a cutting table is provided on the side of the frame 1 away from the feeding area, and the suction cup 21 moves between the cutting table and the area above the feeding area.

[0036] In this embodiment, the suction cup 21 adsorbs the upper surface cardboard and moves it to the cutting table for cutting.

[0037] See Figure 3 Preferably, the feeding mechanism for the cutting machine further includes a feeding assembly 3, which includes a movable plate 31 disposed in the feeding area and a feeding electric push rod 32. The feeding electric push rod 32 is mounted on the frame 1 and located below one side of the stop 10. One end of the movable plate 31 along the first direction is rotatably connected to the upper end of the frame 1 away from the stop 10, and the other end of the movable plate 31 along the first direction is hinged to the feeding electric push rod 32. The feeding electric push rod 32 is used to drive the movable plate 31 to rotate to approach or move away from the limiting plate 23. The cardboard to be cut, which is stacked, is placed on the movable plate 31.

[0038] Specifically, the first direction is referred to as the Y-axis direction in the attached figure.

[0039] In this embodiment, the stacked cardboard pieces to be cut are placed on the movable plate 31. When the cardboard needs to be transported to the cutting table for cutting, the feeding electric push rod 32 pushes one end of the movable plate 31 to rotate upward. During the rotation, the movable plate 31 lifts one end of the stacked cardboard pieces to be cut, causing the upper surface of the cardboard to move to a position in contact with the limiting plate 23. Then, the suction cup 21 is activated to adsorb the cardboard. The feeding electric push rod 32, in cooperation with the movable plate 31, facilitates the transport of the cardboard to a suitable position for adsorption by the suction cup 21. The structure is simple, the operation is convenient, and it helps to reduce equipment production costs.

[0040] See Figure 3 Preferably, the feeding assembly 3 further includes an arc-shaped baffle 33, which is disposed on the side of the baffle 10 facing the feeding area. The arc-shaped baffle 33 is clearance-fitted with the other end of the movable plate 31 along the first direction. The circle containing the arc-shaped structure of the arc-shaped baffle 33 and the circle generated by the rotation of the movable plate 31 are concentric circles.

[0041] In this embodiment, the arc-shaped baffle 33 helps to ensure that the stacked cardboard to be cut moves more smoothly when lifted by the feeding electric push rod 32, avoiding problems such as paper jams or cardboard bending.

[0042] See Figures 4-5 Preferably, the feeding assembly 3 further includes an adjusting baffle 34, a fixed slide rail 35, a sliding slide rail 36, a sliding plate 37, a sliding block, and an adjusting bolt 38. The movable plate 31 is symmetrically fixed at both ends of the fixed slide rail 35 perpendicular to the baffle 10. The sliding slide rail 36 is located between the two fixed slide rails 35 and is slidably connected to the two fixed slide rails 35 along the second direction. The adjusting baffle 34 is used to be disposed on the sliding slide rail 36. The two ends of the sliding slide rail 36 are respectively connected to the sliding plate 37, and the sliding plate 37 is provided with a sliding plate screw hole. The two sliding blocks are slidably connected to the two fixed slide rails 35 respectively. The sliding blocks are provided with a sliding block screw hole. The adjusting bolt 38 is used to pass through the sliding plate screw hole and the sliding block screw hole to connect the sliding plate 37 and the sliding block.

[0043] The second direction is referred to as the X-axis direction in the attached figure.

[0044] Specifically, the adjusting baffle 34 includes a rear plate, a side plate, and a bottom plate. The rear plate is disposed opposite to the arc-shaped baffle 33. The rear plate is used to restrict the rear end edge of the cardboard, and the side plate is disposed on one side of the rear plate to restrict the side edge of the cardboard. Generally, two adjusting baffles 34 are symmetrically arranged, meaning that the side plates of the two adjusting baffles 34 respectively restrict the left and right sides of the cardboard, preventing the cardboard from shifting position when moving with the movable plate 31.

[0045] In this embodiment, the sliding block is moved to a suitable position, and then the sliding plate 37, along with the sliding rail 36, is moved to a suitable position, aligning the slide plate screw hole on the sliding plate 37 with the slider screw hole on the sliding block. The limiting bolt is then passed through the slide plate screw hole and the slider screw hole and tightened, so that the bottom of the limiting bolt abuts against the inner bottom of the fixed rail 35 for fixation. This allows the sliding rail 36 and the adjusting baffle 34 to be positioned appropriately to fit the cardboard, thus limiting the cardboard's position. Alternatively, when adjusting the position of the adjusting baffle 34 according to the cardboard's position, the limiting bolt can be loosened, but still connected to the sliding block. This allows the sliding block to move synchronously when the sliding rail 36 is moved, facilitating rapid adjustment of the positions of the sliding rail 36 and the adjusting baffle 34.

[0046] Specifically, the feeding assembly 3 further includes a baffle slider and a baffle bolt. The baffle slider slides within the sliding rail 36, and the baffle bolt is used to connect the base plate of the adjusting baffle 34 to the baffle slider.

[0047] In this embodiment, the baffle slider and the baffle bolt are provided to facilitate the adjustment of the position of the adjusting baffle 34 on the sliding rail 36 to adapt to the size of the cardboard and to limit the cardboard.

[0048] See Figure 3 Preferably, the feeding assembly 3 further includes a sensor 39 and a controller. The sensor 39 is used to be disposed on both sides of the frame 1 and to detect the height of the upper surface of the cardboard in the stacked cardboard to be cut on the movable plate 31. The sensor 39 is signal-connected to the controller, which is used to control the operation of the feeding electric push rod 32.

[0049] Specifically, the feeding electric push rod 32 pushes the cardboard to move. When the upper surface cardboard moves to the position set by the sensor 39, the sensor 39 sends a signal to the controller. The controller then controls the feeding electric push rod 32 to stop working, and the suction cup 21 begins to operate. After the upper surface cardboard is suctioned away from the feeding area, the sensor 39 detects that there is no object at the original location of the upper surface cardboard. At this time, the controller controls the feeding electric push rod 32 to move downwards, pulling the cardboard downwards along with it, and then upwards again, moving until the upper surface cardboard reaches the position set by the sensor 39, so that the suction cup 21 can perform suction. This structure is beneficial because after each upper surface cardboard is suctioned, the lower cardboard moves downwards and then pushes the cardboard upwards to a suitable position for the suction cup 21 to suction, which has a position correction function and helps prevent the problem that the suction cup 21 cannot pick up the cardboard due to insufficient cardboard height.

[0050] In this embodiment, the sensor 39 and the controller cooperate with each other to move the cardboard to a position suitable for the suction cup 21 to adhere to, thereby improving the efficiency of the suction cup 21 in adhering to the cardboard and also helping to avoid the problem of the suction cup 21 not adhering to the cardboard when the height of the paper is insufficient.

[0051] See Figure 3 Preferably, the paper separating assembly 2 further includes a fan 25, and the interior of the baffle 10 is enclosed to form a ventilation duct. The fan 25 is installed at the lower end of the baffle 10. The upper end of the arc-shaped baffle 33 is evenly spaced with a plurality of air outlets 30. The side of the air outlets 30 facing the baffle 10 is connected to the ventilation duct, and the side of the air outlets 30 away from the baffle 10 is facing the stacked paperboards to be cut.

[0052] In this embodiment, the air blown by the fan 25 travels along the ventilation duct and enters the gap between the upper surface cardboard and the second layer cardboard from the air outlet 30. The side of the air outlet 30 facing the baffle 10 is connected to the ventilation duct, and the side of the air outlet 30 away from the baffle 10 faces the cardboard to be cut, which is stacked. This structure guides the air so that it blows into the gap between the upper surface cardboard and the second layer cardboard, separating the upper surface cardboard and the second layer cardboard and increasing the distance between them. It also presses down the second layer cardboard and the cardboard below it, further improving the paper separation effect.

[0053] See Figure 6Preferably, the air outlet 30 penetrates the upper edge of the arc-shaped baffle 33; the paper separating assembly 2 further includes an anti-blocking plate 26 evenly spaced at the lower end of the limiting plate 23. When the limiting plate 23 is horizontally positioned at the upper end of the baffle 10, the anti-blocking plate 26 is located at the air outlet 30, and the side of the anti-blocking plate 26 facing the feeding area is flush with the inner surface of the arc-shaped baffle 33.

[0054] Specifically, the preventive plate 26 is located at the air outlet 30, but does not completely block the air outlet 30.

[0055] In this embodiment, when the upper surface cardboard is attracted by the suction cup 21 and causes the limiting plate 23 to flip, an angle is formed between the limiting plate 23 and the upper end face of the baffle 10. When the second layer of cardboard is separated, it is easy to get stuck in the angle, resulting in a paper jam. Therefore, the anti-blocking plate 26 is provided. The anti-blocking plate 26 can prevent the second layer of cardboard from moving into the angle, so that the separated second layer of cardboard can fall along the anti-blocking plate 26 and then fall along the arc-shaped baffle 33 into the feeding area.

[0056] See Figure 3 Preferably, the paper separating assembly 2 further includes a reset electric push rod 27, which is disposed at the lower end of the baffle 10, and the upper end of the reset electric push rod 27 extends into the baffle 10 and is hinged to the lower end face of the limiting plate 23.

[0057] In this embodiment, after the upper surface cardboard is attracted by the suction cup 21 and separated from the second layer cardboard, the limiting plate 23 resets. During the separation of the second layer cardboard, the original second layer cardboard may jump out to the upper surface of the reset limiting plate 23. At this time, the reset electric push rod 27 operates to push the limiting plate 23 to flip. During the flipping process of the limiting plate 23, the limiting plate 23 gradually lifts the original second layer cardboard, i.e., the upper surface cardboard located on the upper surface of the limiting plate 23, until the limiting plate 23 flips to a certain angle, and the edge of the limiting plate 23 moves from the upper surface... The lower end of the cardboard comes out so that the upper surface cardboard is blocked by the anti-blocking plate 26. At this time, the reset electric push rod 27 is reset, and the limiting plate 23 is reset along with the anti-blocking plate 26. During the reset process, the anti-blocking plate 26 gradually pushes the upper surface cardboard to reset and push it back to the feeding area. In order to ensure that the remaining cardboard after the upper surface cardboard is adsorbed is in a proper position in the feeding area, after the suction cup 21 picks up a cardboard, after the limiting plate 23 is reset, the reset electric push rod 27 will lift up once to push the cardboard that may appear on the limiting plate 23 back to the movable plate 31.

[0058] See Figure 2 Preferably, the suction cup component 21 includes a suction device, a suction cup cylinder 211, and a suction cup body 212. The suction device is connected to the suction cup cylinder 211 via a flexible hose. A vent is provided inside the telescopic rod of the suction cup cylinder 211. The suction cup body 212 is connected to the telescopic rod and communicates with the vent.

[0059] The paper separating assembly 2 also includes a pressure rod 22, which is installed on one side of the suction cup cylinder 211. The lower end of the pressure rod 22 is used to abut against the cardboard adsorbed by the suction cup body 212.

[0060] In this embodiment, the suction device is used to drive the telescopic rod of the suction cup cylinder 211 to move, and at the same time, the suction cup body 212, which is connected to the vent, adsorbs the cardboard. The suction cup body 212 is used to adsorb and contact the cardboard. As the telescopic rod of the suction cup cylinder 211 drives the suction cup body 212 and the cardboard to move upward, the cardboard can contact the lower end of the pressure rod 22 and bend due to the obstruction of the pressure rod 22. This increases the gap between the upper surface cardboard and the second layer cardboard, which is conducive to further promoting the separation of the upper surface cardboard and the second layer cardboard.

[0061] In this embodiment, the suction cup device facilitates the adsorption of the cardboard onto the cutting table for cutting.

[0062] See Figures 4-5 Preferably, the movable plate 31 is further provided with a drain hole 310, and the position of the drain hole 310 corresponds to the position of the suction cup body 212.

[0063] Specifically, the frame 1 is also provided with a switch 210 for the suction cylinder 211. One suction cylinder 211 corresponds to one switch 210. This structure is beneficial for the user to open the corresponding switch 210 to open the corresponding suction cylinder 211 according to the actual position of the cardboard on the movable plate 31, thereby helping to avoid the suction cylinder 211 from performing empty suction when there is no cardboard.

[0064] In this embodiment, when the cardboard on the movable plate 31 is completely adsorbed and the user does not notice it in time, the suction cup body 212 adsorbs onto the movable plate 31 at the position corresponding to the drain hole 310. The drain hole 310 prevents the suction cup 21 from adsorbing onto the movable plate 31, thereby avoiding damage to the movable plate 31, and also extends the time for the user to turn off the switch 210 of the suction cup cylinder 211.

[0065] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A feeding mechanism for a cutting machine, characterized in that, The machine includes a frame (1) and a paper separating assembly (2). The paper separating assembly (2) includes a suction cup (21), a limiting plate (23) and a limiting spring (24). A feeding area is provided on one side of the frame (1). The suction cup (21) is used to pick up the upper surface of the paperboard to be cut in the stacked paperboard in the feeding area and move it upward. A baffle (10) is provided on the frame (1), and a limiting plate (23) is rotatably disposed on the upper end face of the baffle (10), with the limiting plate (23) extending partially above the feeding area to press the edge of the cardboard; a limiting spring (24) is connected between the baffle (10) and the limiting plate (23) and is used to keep the limiting plate (23) pressing the edge of the cardboard; a feeding assembly (3) is also included, which includes a movable plate (31) disposed in the feeding area and a feeding electric push rod (32), the feeding electric push rod (32) being mounted on the frame (1) and located below one side of the baffle (10); one end of the movable plate (31) is rotatably connected to the baffle in the first direction. The frame (1) is located away from the end of the baffle (10), and the other end of the movable plate (31) along the first direction is hinged to the feeding electric push rod (32). The feeding electric push rod (32) is used to drive the movable plate (31) to rotate to approach or move away from the limiting plate (23). The cardboard to be cut is placed on the movable plate (31) in a stacked arrangement. The feeding assembly (3) also includes an arc-shaped baffle (33). The arc-shaped baffle (33) is located on the side of the baffle (10) facing the feeding area. The arc-shaped baffle (33) and the other end of the movable plate (31) along the first direction are in clearance fit. The circle where the arc structure of the arc-shaped baffle (33) is located and the circle generated by the rotation of the movable plate (31) are concentric circles.

2. The feeding mechanism for a cutting machine according to claim 1, characterized in that, The feeding assembly (3) further includes an adjusting baffle (34), a fixed slide rail (35), a sliding slide rail (36), a sliding plate (37), a sliding block, and an adjusting bolt (38). The movable plate (31) is symmetrically fixed with the fixed slide rail (35) at both ends along the second direction. The sliding slide rail (36) is located between the two fixed slide rails (35) and is slidably connected to the two fixed slide rails (35) along the second direction. The adjusting baffle (34) is used to be set on the sliding rail (36). The two ends of the sliding rail (36) are respectively connected to the sliding plate (37). The sliding plate (37) is provided with a sliding plate screw hole. The two sliding blocks are respectively slidably connected to the two fixed rails (35). The sliding block is provided with a slider screw hole. The adjusting bolt (38) is used to pass through the sliding plate screw hole and the slider screw hole to connect the sliding plate (37) and the sliding block.

3. The feeding mechanism for a cutting machine according to claim 1, characterized in that, The feeding assembly (3) also includes a sensor (39) and a controller. The sensor (39) is used to be set on both sides of the frame (1) and to detect the height of the upper surface of the cardboard in the stacked cardboard to be cut on the movable plate (31). The sensor (39) is connected to the controller, which is used to control the operation of the feeding electric push rod (32).

4. The feeding mechanism for a cutting machine according to claim 1, characterized in that, The paper-splitting assembly (2) also includes a fan (25). The interior of the baffle (10) forms a ventilation duct. The fan (25) is installed at the lower end of the baffle (10). The upper end of the arc-shaped baffle (33) is evenly spaced with multiple air outlets (30). The side of the air outlet (30) facing the baffle (10) is connected to the ventilation duct. The side of the air outlet (30) away from the baffle (10) faces the stacked paperboards to be cut.

5. The feeding mechanism for a cutting machine according to claim 4, characterized in that, The air outlet (30) penetrates the upper edge of the arc-shaped baffle (33); the paper separating assembly (2) also includes a preventive plate (26) evenly spaced at the lower end of the limiting plate (23). When the limiting plate (23) is horizontally positioned at the upper end of the baffle (10), the preventive plate (26) is located at the air outlet (30), and the side of the preventive plate (26) facing the feeding area is flush with the inner surface of the arc-shaped baffle (33).

6. The feeding mechanism for a cutting machine according to claim 1, characterized in that, The paper separating assembly (2) also includes a reset electric push rod (27), which is located at the lower end of the baffle (10). The upper end of the reset electric push rod (27) extends into the baffle (10) and is hinged to the lower end face of the limiting plate (23).

7. The feeding mechanism for a cutting machine according to claim 1, characterized in that, The suction cup component (21) includes a suction device, a suction cup cylinder (211) and a suction cup body (212). The suction device is connected to the suction cup cylinder (211) via a hose. A vent is provided in the telescopic rod of the suction cup cylinder (211). The suction cup body (212) is connected to the telescopic rod and communicates with the vent. The paper separating assembly (2) also includes a pressure bar (22), which is installed on one side of the suction cup cylinder (211). The lower end of the pressure bar (22) is used to abut against the cardboard adsorbed by the suction cup body (212).

8. The feeding mechanism for a cutting machine according to claim 7, characterized in that, The movable plate (31) is also provided with a drain hole (310), and the position of the drain hole (310) corresponds to the position of the suction cup body (212).

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