A paper feeding mechanism for corrugated cardboard

Abstract

This utility model discloses a corrugated cardboard separation and feeding mechanism, including: a frame, a front support roller, two rear support sections, two belt modules, a chain module, and a friction part. For a stack of corrugated cardboard, the front side of the bottom surface of the lowest corrugated cardboard contacts the top of the front support roller, and the rear side of the bottom surface contacts the rear support section. When the friction part corresponds to a link on the upper part of the chain, it contacts the lowest corrugated cardboard, causing the two rear support sections of the cardboard to extend forward through the gap through friction. As the chain moves, when the friction part corresponds to a link on the side of the chain, the friction part does not contact the corrugated cardboard, and the cardboard contacts the upper part of the conveyor belt and is fed forward by the conveyor belt. The advantages are: more stable feeding of corrugated cardboard sheets one by one, less prone to paper jams, and easier adjustment of the feeding frequency.

Description

Technical Field

[0001] This utility model relates to carton production equipment, and in particular to a paper feeding mechanism for corrugated cardboard. Background Technology

[0002] Cardboard boxes are typically made by processing corrugated cardboard into the desired shape and creases, then folding and connecting the flat corrugated cardboard along the creases to form the box body. The paper feeding mechanism, as the starting point of the cardboard box production equipment, is used to feed the stacked corrugated cardboard sheets one by one, which are received by the conveyor module (usually a conveyor belt) and enter other process mechanisms of the cardboard box production equipment.

[0003] Existing paper feeding mechanisms typically use a conveyor belt and baffles, with a gap between the front baffle and the conveyor belt, slightly larger than the thickness of a single sheet of corrugated cardboard. Stacked corrugated cardboard is placed on the conveyor belt, and as the conveyor belt moves, the bottommost corrugated cardboard is fed through the gap, while the remaining corrugated cardboard is blocked by the front baffle.

[0004] When the corrugated cardboard stack is thick, the pressure on the bottom corrugated cardboard is high, resulting in slower feeding. Conversely, when the stack is thin, the pressure on the bottom corrugated cardboard decreases, leading to faster feeding. This means that existing separate paper feeding mechanisms still have problems: feeding corrugated cardboard sheet by sheet is not stable enough, the feeding frequency is inconvenient to adjust, and paper jams may occur when the stack is thick. Utility Model Content

[0005] This application provides a paper separation and feeding mechanism for corrugated cardboard, which can solve the problems mentioned in the background art.

[0006] This application provides a paper separation and feeding mechanism for corrugated cardboard, comprising: The equipment frame has side baffles fixed on both sides in the horizontal direction and a front baffle fixed on the first side in the longitudinal direction. The front support roller is rotatably connected to the equipment frame and has a gap between it and the front baffle for the corrugated cardboard to leave. Two rear support parts are fixedly connected to the second longitudinal side of the equipment frame to make the corrugated cardboard supported by the rear support parts and the front support rollers tilted in a state where the front is lower and the back is higher. Two belt modules are set on the equipment frame, located behind the front support roller, with the upper part of the conveyor belt running longitudinally and flush with the top of the front support roller. The chain module is mounted on the equipment frame, with the upper part of the chain links running longitudinally and lower than the upper part of the conveyor belt. The friction part is fixedly connected to a link of the chain. During the movement of the chain, the friction part has: a first state for contacting the corrugated cardboard to make the corrugated cardboard leave the support part, and a second state for leaving the corrugated cardboard to make the corrugated cardboard contact the upper part of the conveyor belt.

[0007] In some embodiments, the bottom edges of the two side baffles are respectively fixedly connected to two mounting brackets with modules; the two mounting brackets with modules are slidably connected to the equipment frame in the lateral direction; the equipment frame is provided with an adjustment mechanism for adjusting the distance between the two mounting brackets.

[0008] In some embodiments, the adjusting mechanism is a bidirectional lead screw.

[0009] In some embodiments, the two belt modules share the same input shaft, which is rotatably connected to the device frame.

[0010] In some embodiments, a second connecting strip is provided on the longitudinal second side of the equipment frame, which extends longitudinally; the two rear support parts are the second connecting strips at the fixed connection positions of the equipment frame.

[0011] In some embodiments, the second connecting strip has a square cross-section and is fixedly connected to two vertical third connecting strips by two square hole cross clamps; the rear support is fixedly provided with a longitudinal screw rod, which is fixedly connected to the third connecting strip.

[0012] In summary, this application discloses a corrugated cardboard separation and feeding mechanism, comprising: a frame, a front support roller, two rear support sections, two belt modules, a chain module, and a friction section. For a stack of corrugated cardboard, the front side of the bottom surface of the lowest corrugated cardboard contacts the top of the front support roller, and the rear side of the bottom surface contacts the rear support section. When the friction section corresponds to a link on the upper part of the chain, it contacts the lowest corrugated cardboard, causing the two rear support sections of the cardboard to extend forward through the gap due to friction. As the chain moves, when the friction section corresponds to a link on the side of the chain, the friction section does not contact the corrugated cardboard, and the cardboard contacts the upper part of the conveyor belt and is fed forward by the conveyor belt. The advantages include: more stable feeding of corrugated cardboard sheets one by one, less paper jamming, and easier adjustment of the feeding frequency. Attached Figure Description

[0013] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0014] Figure 1 This is a top view of this application; Figure 2 This is a cross-sectional view of this application; Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram of two modules and equipment racks; Figure 5 This is a schematic diagram of the rear support section.

[0015] In the picture, 1. Equipment frame; 11. Connecting plate; 12. First connecting strip; 1A. Side baffle; 1B. Front baffle; 1C. Gap; 1D. Second connecting strip; 1E. Square tube; 1E1. Telescopic strip; 1F. Square hole cross clamp; 1G. Third connecting strip; 1H. Guide post; 2. Front support roller; 3. Rear support section; 3A. Screw; 4. Module; 41. Mounting bracket; 42. Conveyor belt; 43. Input shaft; 5. Chain module; 51. Chain; 52. Sprocket; 53. Connecting shaft; 54. Connecting block; 6. Friction section; 7. Adjustment mechanism. Specific Implementation

[0016] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0017] Please see Figure 1 A corrugated cardboard separation and feeding mechanism includes: a frame 1, a front support roller 2, two rear support parts 3, two belt modules 4, a chain module 5, and a friction part 6.

[0018] Please see Figure 1 and Figure 2 The equipment frame 1 may include: two connecting plates 11 and a plurality of first connecting strips 12 fixed between the two connecting plates 11. For ease of subsequent explanation of orientation, the two connecting plates 11 are set on both sides in the horizontal direction.

[0019] Side baffles 1A are also fixed on both sides of the equipment frame 1 laterally. The side baffles 1A can be integrated with the connecting plate 11. The two side baffles 1A are used to limit the two side edges of the corrugated cardboard stack.

[0020] A front baffle 1B is fixed on the first longitudinal side of the equipment frame 1. The front baffle 1B is used to limit the front edge of the corrugated cardboard stack.

[0021] The front support roller 2 is rotatably connected to the equipment frame 1. More specifically, the two ends of the front support roller 2 can be rotatably connected to two connecting plates 11 respectively via bearing seats. The front support roller 2 is lower than the front baffle 1B, and there is a gap 1C between the front support roller 2 and the front baffle 1B for the corrugated cardboard to leave.

[0022] Two rear support parts 3 are fixedly connected to the second longitudinal side of the equipment frame 1. More specifically, the rear support parts 3 can be L-shaped. The corrugated cardboard supported by the rear support parts 3 and the front support roller 2 is in an inclined state with the front lower and the back higher. That is, the rear support parts 3 are higher than the front support roller 2. Correspondingly, for the corrugated cardboard stack, the front side of the bottom surface of the bottom corrugated cardboard contacts the top of the front support roller 2, and the rear side of the bottom surface contacts the rear support parts 3.

[0023] Please see Figure 5 In some embodiments, a second connecting strip 1D is provided on the longitudinal second side of the equipment frame 1, extending longitudinally. More specifically, the equipment frame 1 may be fixedly connected to two square tubes 1E; the outer wall of the second longitudinal side of the two square tubes 1E has a gap 1C, and connecting ears are welded on both sides of the gap 1C, with fasteners passing between the two connecting ears; telescopic strips 1E1 extend and retract inside the two square tubes 1E, and the two ends of the second connecting strip 1D are fixedly connected to the two telescopic strips 1E1 respectively. The two rear support parts 3 are fixedly connected to the second connecting strip 1D at the fixed connection position of the equipment frame 1.

[0024] Loosen the two first fasteners, and the second connecting strip 1D can move longitudinally relative to the two square tubes 1E. After moving to the appropriate position, tighten the two first fasteners to fix the second connecting strip 1D. Adjust the position of the two rear support parts 3 longitudinally to adapt to changes in the longitudinal dimensions of the corrugated cardboard.

[0025] Please see Figure 5 Furthermore, the second connecting strip 1D has a square cross-section and is fixedly connected to two vertical third connecting strips 1G via two square-hole cross clamps 1F. The rear support part 3 is fixedly provided with a longitudinally extending screw 3A, which is fixedly connected to the third connecting strip 1G. More specifically, the third connecting strip 1G may have a through hole for the screw 3A to pass through, and the screw 3A may be threaded with two nuts, one on each side of the third connecting strip 1G.

[0026] By adjusting the positions of the two rear support parts 3 laterally using the square hole cross clamp 1F, the corrugated cardboard can be adapted to changes in its dimensionality in the lateral direction; the tilt angle of the corrugated cardboard can also be adjusted by adjusting the positions of the two rear support parts 3 vertically.

[0027] Please see Figure 1 and Figure 2 Two belt modules 4 are mounted on the equipment frame 1. More specifically, the mounting brackets 41 for the two belt modules 4 can be fixedly connected to the equipment frame 1. The two belt modules 4 are located behind the front support roller 2. The upper part of the conveyor belt 42 is longitudinal and flush with the top of the front support roller 2.

[0028] Correspondingly, for the corrugated cardboard stack, because it is tilted with the front lower than the back, the bottom corrugated cardboard does not come into contact with the upper part of the conveyor belt 42.

[0029] In some embodiments, the bottom edges of the two side baffles 1A are respectively fixedly connected to two mounting brackets 41 with modules 4, that is, the side baffles 1A are not directly fixedly connected to the equipment rack 1. The two mounting brackets 41 with modules 4 are slidably connected to the equipment rack 1 in the lateral direction. More specifically, two guide posts 1H can be fixedly connected between the two connecting plates 11 of the mounting bracket 41. Both mounting brackets 41 with modules 4 have two through holes for the guide posts 1H to pass through, and bushings for matching guide posts 1H are embedded in the through holes. The equipment rack 1 is provided with a spacing adjustment mechanism 7, which is used to adjust the distance between the two mounting brackets 41.

[0030] If the side baffle 1A and the connecting plate 11 are integrated, the distance between the two side baffles 1A cannot be adjusted. However, by fixing the side baffle 1A to the mounting frame 41 with the module 4, the distance adjustment mechanism 7 can simultaneously adjust the distance between the two modules 4 and the two side baffles 1A. This not only adapts to changes in the transverse dimensions of the corrugated cardboard, but also makes the operation convenient.

[0031] Please see Figure 1 and Figure 4 Furthermore, the adjusting mechanism 7 is a bidirectional lead screw, meaning the lead screw has two threads with opposite directions of rotation, while other parameters are the same. More specifically, the bidirectional lead screw can be rotatably connected to two connecting plates 11 via two bearing seats. Both mounting brackets 41 with modules 4 have through holes through which the bidirectional lead screw passes, and a lead screw nut matching the bidirectional lead screw is fixedly connected within the through hole.

[0032] Please see Figure 1 and Figure 4 Furthermore, the two belt modules 4 share the same input shaft 43, which is rotatably connected to the equipment frame 1. More specifically, the input shaft 43 can be rotatably connected to the two connecting plates 11 via two bearing seats. The cross-section of the middle portion of the input shaft 43 is non-circular, for example, it can be a regular polygon. Correspondingly, the pulleys on the same side of the two belt modules 4 have through holes of corresponding shapes, through which the input shaft 43 passes and restricts the rotation of the pulleys relative to the input shaft 43. A first motor is mounted on one side of the equipment frame 1, which drives the input shaft 43 to rotate.

[0033] Compared to having separate motors for each of the two belt modules 4, the structure is simpler, the synchronization of the movement of the two belt modules 4 is better, and it will not interfere with the adjustment of the distance between the two belt modules 4 and the two side baffles 1A.

[0034] Please see Figure 1 and Figure 2 The chain module 5 is mounted on the equipment frame 1. More specifically, the chain module 5 can have two chains 51. The sprockets 52 on the same side of the two chains 51 are connected to the same connecting shaft 53. The connecting shaft 53 can be rotatably connected to two connecting plates 11 through two bearing seats. A second motor is installed on one side of the equipment frame 1. The second motor is used to drive one of the connecting shafts 53 to rotate. Correspondingly, one connecting shaft 53 is outside the belt module 4, and another connecting shaft 53 corresponds to the belt module 4. The mounting brackets 41 of both belt modules 4 have through holes through which the connecting shafts 53 pass. If combined with the above embodiment where "the two belt modules 4 are the same input shaft 43", the two connecting shafts 53 can be located on opposite sides of the input shaft 43.

[0035] The upper links of chain 51 are longitudinal and lower than the upper part of conveyor belt 42, meaning that the upper links of chain 51 will not interfere with the corrugated cardboard contacting the upper part of conveyor belt 42 downwards.

[0036] Please see Figure 2 and Figure 3 The friction part 6 is fixedly connected to a link of the chain 51. More specifically, one link is selected from each of the two chains 51, and a connecting block 54 is fixedly connected between the two links. The friction part 6 is fixedly connected to the connecting block 54.

[0037] During the movement of chain 51, friction part 6 has: a first state for contacting corrugated cardboard to cause the corrugated cardboard to leave the rear support part 3, and a second state for leaving the corrugated cardboard to contact the upper part of conveyor belt 42.

[0038] When the friction part 6 corresponds to a link on the upper part of the chain 51, it contacts the lowest corrugated cardboard. Through friction, the two rear support parts 3 of the corrugated cardboard extend forward through the gap 1C. Accordingly, a suitable gap can be left between the conveyor module receiving the corrugated cardboard and the paper feeding structure. As the chain 51 moves, when the friction part 6 corresponds to a link on the side of the chain 51, the friction part 6 does not contact the corrugated cardboard. The corrugated cardboard contacts the upper part of the conveyor belt 42 and is sent forward by the conveyor belt 42 into the conveyor module receiving the corrugated cardboard.

[0039] Correspondingly, for corrugated cardboard stacks, because they are tilted with the front lower than the back, the friction part 6 can be made of deformable components such as silicone sheets or spring sheets. When the friction part 6 corresponds to the upper links of the chain 51, as the friction part 6 moves forward, it contacts the bottom surface of the corrugated cardboard but may not directly drive the corrugated cardboard forward. As the friction part 6 continues to move forward, the distance between the corrugated cardboard and the upper links of the chain 51 decreases, causing the friction part 6 to gradually bend and deform. Correspondingly, the friction part 6 gradually accumulates elastic potential energy, gradually increasing the friction between the moving part and the corrugated cardboard. By reasonably designing the length of the chain module 5 and the tilt angle of the corrugated cardboard, the friction part 6 can stably drive the corrugated cardboard forward, separating the corrugated cardboard from the rear support part 3.

Claims

1. A separating paper feed mechanism of corrugated board, characterized by, include: The equipment frame (1) has side baffles (1A) fixed on both sides in the horizontal direction and a front baffle (1B) fixed on the first side in the longitudinal direction. The front support roller (2) is rotatably connected to the equipment frame (1) and has a gap (1C) between it and the front baffle (1B) for the corrugated cardboard to leave. Two rear support parts (3) are fixedly connected to the second longitudinal side of the equipment frame (1) to make the corrugated cardboard supported by the rear support parts (3) and the front support roller (2) tilted in a state of low front and high back. Two belt modules (4) are set on the equipment frame (1) and located behind the front support roller (2). The upper part of the conveyor belt (42) is longitudinal and flush with the top of the front support roller (2). Chain module (5) is set on equipment frame (1), and the upper part of the chain link (51) is longitudinal and lower than the upper part of the conveyor belt (42); Friction part (6) is fixedly connected to a link of chain (51). During the movement of chain (51), friction part (6) has: a first state for contacting corrugated cardboard to make the corrugated cardboard leave the rear support part (3), and a second state for leaving the corrugated cardboard to make the corrugated cardboard contact the upper part of the conveyor belt (42).

2. A separating paper feed mechanism of a corrugated board according to claim 1, characterized in that, The bottom edges of the two side baffles (1A) are fixedly connected to the two mounting brackets (41) with modules (4); the two mounting brackets (41) with modules (4) are slidably connected to the equipment frame (1) in the transverse direction; the equipment frame (1) is provided with a distance adjustment mechanism (7), which is used to adjust the distance between the two mounting brackets (41).

3. A separating and feeding mechanism of corrugated board according to claim 2, characterized in that The adjusting mechanism (7) is a two-way lead screw.

4. The separating and feeding mechanism of the corrugated board according to claim 2, wherein The two belt modules (4) share the same input shaft (43), which is rotatably connected to the equipment frame (1).

5. The separating and feeding mechanism of the corrugated board according to claim 1, wherein The equipment frame (1) has a second connecting strip (1D) that extends longitudinally along the second side; the two rear support parts (3) are fixedly connected to the equipment frame (1) as the second connecting strip (1D).

6. A separating and feeding mechanism of corrugated board according to claim 5, characterized in that The second connecting strip (1D) has a square cross-section and is fixedly connected to two vertical third connecting strips (1G) by two square hole cross clamps (1F); the rear support part (3) is fixedly provided with a longitudinal screw (3A), which is fixedly connected to the third connecting strip (1G).

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