A paper feeding mechanism of a slitting machine

Abstract

The utility model relates to a kind of paper feeding mechanism of slitting machine, comprising: vice paper feeding roller and main paper feeding roller;Two ends of main paper feeding roller are rotatably connected with main paper feeding roller seat by main paper feeding roller shaft, and main paper feeding roller seat is connected on rack, and two ends of vice paper feeding roller are connected in vice paper feeding roller assembly by vice paper feeding roller shaft;Vice paper feeding roller assembly is connected by lifting mechanism, one end of lifting mechanism is rotatably connected with vice paper feeding roller assembly, and the other end is rotatably connected on rack;Sliding block is provided in vice paper feeding roller assembly, and adjusting pre-tightening mechanism is provided on sliding block;Vice paper feeding roller assembly is driven to move by lifting mechanism, and then vice paper feeding roller is lifted or pressed down;On the basis of the original main paper feeding roller structure setting, the structure of vice paper feeding roller is optimized and designed, the structure of vice paper feeding roller is designed into adjustable sliding block, so as to adjust the pressing force of the surface of vice paper feeding roller and the surface of main paper feeding roller, avoid the problem of paper feeding straight-line running deviation caused by uneven tension of lifting mechanism at two ends of vice paper feeding roller.

Description

Technical Field

[0001] This utility model relates to paper slitting equipment, specifically to a paper feeding mechanism for a slitting machine. Background Technology

[0002] In the structure of the paper slitting machine, a two-stage paper feeding mechanism unit is set up according to the slitting length of the paper. Each stage of the paper feeding mechanism unit includes a main paper feeding roller and an auxiliary paper feeding roller. The two ends of these two paper feeding rollers are connected to the main paper feeding roller assembly and the auxiliary paper feeding roller assembly, respectively. The main paper feeding roller is fixed to the frame by the main paper feeding roller assembly. The auxiliary paper feeding roller is pressed and separated from the main paper feeding roller by a lifting mechanism connected to the auxiliary paper feeding roller assembly, thereby feeding the paper between the main paper feeding roller and the auxiliary paper feeding roller.

[0003] In the existing paper feeding mechanism, the lifting mechanism at both ends of the auxiliary paper feeding roller has uneven tension, which causes uneven clamping force between the main paper feeding roller and the auxiliary paper feeding roller, resulting in paper feeding deviation and making it impossible to ensure the normal slitting operation of the slitting machine. Utility Model Content

[0004] Given the technical problems with the paper feeding mechanism of the slitting machine, the purpose of this utility model is to provide a paper feeding mechanism for the slitting machine. Based on the original main paper feeding roller structure, the auxiliary paper feeding roller structure is optimized by designing the auxiliary paper feeding roller structure as an adjustable slider, thereby adjusting the pressing force between the auxiliary paper feeding roller surface and the main paper feeding roller surface, and avoiding the problem of deviation in the straight line of paper feeding caused by uneven tension of the lifting mechanism at both ends of the auxiliary paper feeding roller.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a paper feeding mechanism for a slitting machine, comprising: an auxiliary paper feeding roller and a main paper feeding roller arranged tangentially at the top and bottom; the two ends of the main paper feeding roller are rotatably connected to a main paper feeding roller seat via a main paper feeding roller shaft, the main paper feeding roller seat being connected to the frame; the two ends of the auxiliary paper feeding roller are connected to an auxiliary paper feeding roller assembly via an auxiliary paper feeding roller shaft; the auxiliary paper feeding roller assembly is connected via a lifting mechanism, one end of the lifting mechanism being rotatably connected to the auxiliary paper feeding roller assembly, and the other end being rotatably connected to the frame; a slider is provided in the auxiliary paper feeding roller assembly, and an adjustment pre-tightening mechanism is provided on the slider; the lifting mechanism drives the auxiliary paper feeding roller assembly to move, thereby causing the auxiliary paper feeding roller to be raised or lowered, and the slider adjusts the pressure between the auxiliary paper feeding roller surface and the main paper feeding roller surface to be uniform; Furthermore, the auxiliary paper feed roller assembly includes: an auxiliary paper feed roller frame, an auxiliary paper feed roller seat, and fastening bolts; both ends of the auxiliary paper feed roller are connected to the auxiliary paper feed roller seat via auxiliary paper feed roller shafts, and the auxiliary paper feed roller seat and the slider slidably disposed in the auxiliary paper feed roller frame are connected together by fastening bolts; Furthermore, the auxiliary paper feed roller frame has a cavity for accommodating the slider, and slide rails that cooperate with the slider are provided on both sides of the cavity, and the slider is slidably disposed in the auxiliary paper feed roller frame; Furthermore, the lifting mechanism is a lifting cylinder, model MAL32*15-S; Furthermore, the top end of the cylinder rod of the lifting cylinder is rotatably connected to the auxiliary paper feeding roller frame, and one end of the rodless chamber of the lifting cylinder is rotatably connected to the machine frame through the cylinder seat; Furthermore, the upper end of the cavity of the auxiliary paper feed roller frame that accommodates the slider is open, and the adjustment pre-tightening mechanism is set at the opening and connected to the upper end of the slider; the adjustment pre-tightening mechanism includes: an adjusting rod, a spring seat, a spring, and a handle connected to the top of the adjusting rod; a top plate is set at the opening position of the auxiliary paper feed roller frame cavity, and an internal thread hole that matches the external thread of the adjusting rod is opened on the top plate. The adjusting rod passes through the top plate and is connected to the spring seat. A spring is set in the spring seat and the spring is connected to the slider; Furthermore, the lower part of the main paper feed roller seat is fitted onto the frame, and the upper part of the main paper feed roller seat is fitted and positioned with the auxiliary paper feed roller frame. One side of the auxiliary paper feed roller frame is rotatably connected to the main paper feed roller seat through the first connecting shaft, so that the auxiliary paper feed roller frame can rotate relative to the main paper feed roller seat around the first connecting shaft. Furthermore, the top of the cylinder rod of the lifting cylinder is rotatably connected to the auxiliary paper feeding roller frame via a second connecting shaft.

[0006] Furthermore, the positioning of the upper part of the main feed roller seat and the auxiliary feed roller frame is formed by the positioning surface of the main feed roller seat and the positioning surface of the auxiliary feed roller frame. The distance between the two positioning surfaces is controlled by adjusting the lifting cylinder, thereby controlling the lifting height of the auxiliary feed roller.

[0007] Based on the above-mentioned paper feeding mechanism structure, its working principle is as follows: When working, the cylinder reversing control valve is turned on, air enters the rodless chamber of the cylinder, the cylinder rod extends, and drives the auxiliary paper feeding roller frame to lift through the second connecting shaft connected to the top of the cylinder rod. The auxiliary paper feeding roller frame rotates, thereby lifting the auxiliary paper feeding roller, that is, the auxiliary paper feeding roller rotates counterclockwise and moves upward, thereby disengaging from the main paper feeding roller and pulling the roll of paper out between the main and auxiliary paper feeding rollers. When the cylinder reversing valve is reversed, air enters the rod chamber of the cylinder, the cylinder rod retracts, and drives the auxiliary paper feeding roller frame to press down, that is, the auxiliary paper feeding roller rotates clockwise and moves downward, thereby approaching the main paper feeding roller. At this time, the main paper feeding roller seat surface and the auxiliary paper feeding roller frame positioning surface are engaged and tightened, and the servo motor is started to start feeding paper according to the set paper feeding length. The paper feeding mechanism in this design is used as the primary paper feeding unit of the slitting machine. The entire slitting machine is equipped with two sets of paper feeding mechanism units on the frame. In this design, the first set of paper feeding mechanism units is located at the front end of the frame, and the second set of paper feeding mechanism units is arranged parallel to the rear end of the first set of paper feeding mechanism units. The frame at the rear end of the second set of paper feeding mechanism units is equipped with a cutting mechanism and an inclined paper feeding slide. The roll of paper passes through the first set of paper feeding mechanism at the front end, then through the second set of paper feeding mechanism, is slit, and is then transported by the paper feeding slide at the rear end of the second set of paper feeding mechanism.

[0008] The beneficial effects of using the paper feeding mechanism of the slitting machine of this utility model are: The main paper feed roller structure in the slitting machine's paper feeding mechanism is retained, while the auxiliary paper feed roller structure is modified. The auxiliary paper feed roller structure is designed as an adjustable slider, and the auxiliary paper feed roller is connected to the auxiliary paper feed roller seat through the slider. The slider is combined with the adjustable pre-tightening mechanism. This adjusts the pressure between the auxiliary paper feed roller surface and the main paper feed roller surface, avoiding the problem of uneven tension of the lifting mechanism at both ends of the auxiliary paper feed roller causing the paper feeding straight-line running deviation, thereby improving the working efficiency of the slitting machine. Attached Figure Description

[0009] Figure 1 This is a structural diagram of the paper feeding mechanism of the slitting machine of this utility model.

[0010] Figure 2 for Figure 1 A rear-view orientation diagram.

[0011] Figure 3 for Figure 1 A partial structural diagram.

[0012] Figure 4 for Figure 3 Side view.

[0013] Figure 5 for Figure 3 A partial structural diagram.

[0014] Figure 6 This is an assembly drawing of the paper feeding mechanism of the slitting machine of this utility model (lifting cylinder in retracted state) in the entire slitting machine.

[0015] Figure 7 for Figure 6 Top view.

[0016] Figure 8 This is a structural diagram showing the rotating state of the paper feeding mechanism of the slitting machine during the entire operation of the slitting machine.

[0017] In the diagram, 1. Auxiliary paper feed roller, 2. Main paper feed roller, 3. Main paper feed roller shaft, 4. Main paper feed roller seat, 5. Frame, 6. Auxiliary paper feed roller shaft, 7. Slider, 8. Auxiliary paper feed roller frame, 9. Auxiliary paper feed roller seat, 10. Fastening bolt, 11. Cavity, 12. Slide rail, 13. Lifting cylinder, 14. Cylinder rod, 15. Cylinder seat, 16. Adjusting rod, 17. Spring seat, 18. Spring, 19. Handle, 20. Top plate, 21. First connecting shaft, 22. Second connecting shaft, 4.1. Main paper feed roller seat positioning surface, 8.1. Auxiliary paper feed roller frame positioning surface, 23. Paper feed slide, 24. Motor, a. First set of paper feeding mechanism unit, b. Second set of paper feeding mechanism unit. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] like Figure 1-8 The paper feeding mechanism of the slitting machine shown includes: an auxiliary paper feeding roller 1 and a main paper feeding roller 2 arranged tangentially at the top and bottom; the two ends of the main paper feeding roller 2 are rotatably connected to the main paper feeding roller seat 4 via the main paper feeding roller shaft 3, and the main paper feeding roller seat 4 is connected to the frame 5; the two ends of the auxiliary paper feeding roller 1 are connected to the auxiliary paper feeding roller assembly via the auxiliary paper feeding roller shaft 6; the auxiliary paper feeding roller assembly is connected via a lifting mechanism, one end of the lifting mechanism is rotatably connected to the auxiliary paper feeding roller assembly, and the other end is rotatably connected to the frame 1; a slider 7 is provided in the auxiliary paper feeding roller assembly, and an adjustment pre-tightening mechanism is provided on the slider 7; the lifting mechanism drives the auxiliary paper feeding roller assembly to move, thereby driving the auxiliary paper feeding roller 1 to be raised or lowered, and the slider 7 adjusts the pressure between the auxiliary paper feeding roller surface and the main paper feeding roller surface to be uniform; Furthermore, the auxiliary paper feed roller assembly includes: an auxiliary paper feed roller frame 8, an auxiliary paper feed roller seat 9, and fastening bolts 10; the two ends of the auxiliary paper feed roller 1 are connected to the auxiliary paper feed roller seat 9 through the auxiliary paper feed roller shaft 6, and the auxiliary paper feed roller seat 9 is connected to the slider 7 slidably disposed in the auxiliary paper feed roller frame 8 through the fastening bolts 10. Furthermore, the auxiliary paper feed roller frame 8 has a cavity 11 for accommodating the slider 7, and slide rails 12 that cooperate with the slider 7 are provided on both sides of the cavity 11. The slider 7 is slidably disposed in the auxiliary paper feed roller frame 8. Furthermore, the lifting mechanism is a lifting cylinder 13, model MAL32*15-S; Furthermore, the top end of the cylinder rod 14 of the lifting cylinder 13 is rotatably connected to the auxiliary paper feeding roller frame 8, and one end of the rodless chamber of the lifting cylinder 13 is rotatably connected to the frame 5 through the cylinder seat 15. Furthermore, the upper end of the cavity 11 of the auxiliary paper feed roller frame 8 that accommodates the slider 7 is open, and the adjustment pre-tightening mechanism is set at the opening and connected to the upper end of the slider 7; the adjustment pre-tightening mechanism includes: an adjustment rod 16, a spring seat 17, a spring 18 and a handle 19 connected to the top of the adjustment rod 16; a top plate 20 is set at the opening position of the cavity 11 of the auxiliary paper feed roller frame 8, and an internal thread hole that matches the external thread of the adjustment rod 16 is opened on the top plate 20. The adjustment rod 16 passes through the top plate 20 and is connected to the spring seat 17. The spring 18 is set in the spring seat 17 and is connected to the slider 7; Furthermore, the lower part of the main paper feed roller holder 4 is fitted onto the frame 5, and the upper part of the main paper feed roller holder 4 is fitted and positioned with the auxiliary paper feed roller holder 8. One side of the auxiliary paper feed roller holder 8 is rotatably connected to the main paper feed roller holder 4 through the first connecting shaft 21, so that the auxiliary paper feed roller holder 8 can rotate relative to the main paper feed roller holder 4 around the first connecting shaft 21. Furthermore, the top end of the cylinder rod 14 of the lifting cylinder 13 is rotatably connected to the auxiliary paper feeding roller frame 8 via the second connecting shaft 22.

[0020] Furthermore, the upper part of the main paper feed roller seat 4 and the auxiliary paper feed roller frame 8 are positioned by the positioning surface 4.1 of the main paper feed roller seat and the positioning surface 8.1 of the auxiliary paper feed roller frame. The distance between the two positioning surfaces is controlled by adjusting the lifting cylinder 13, thereby controlling the lifting height of the auxiliary paper feed roller 1.

[0021] Based on the above structural design of the paper feeding mechanism, its working principle is as follows: When in operation, the cylinder reversing control valve is activated, air enters the rodless chamber of cylinder 13, and cylinder rod 14 extends. Through the second connecting shaft 22 connected to the top of cylinder rod 14, the auxiliary paper feed roller frame 8 is lifted, and the auxiliary paper feed roller frame 8 rotates, thereby lifting the auxiliary paper feed roller 1. That is, the auxiliary paper feed roller 1 rotates counterclockwise and moves upward, thus disengaging from the main paper feed roller 2 and pulling the roll of paper out between the main and auxiliary paper feed rollers. When the cylinder reversing valve is activated, air enters the rod chamber of cylinder 13, and cylinder rod 14 retracts, driving the auxiliary paper feed roller frame 8 downward. That is, the auxiliary paper feed roller 1 rotates clockwise and moves downward, thus approaching the main paper feed roller 2. At this time, the positioning surface 4.1 of the main paper feed roller seat and the positioning surface 8.1 of the auxiliary paper feed roller frame are engaged and tightened, and the servo motor is started to start feeding paper according to the set feeding length. When the strokes of the two cylinder rods on both sides of the auxiliary paper feed roller 1 are different, compensation is achieved through the action of the slider 7 and the adjusting pre-tightening mechanism. When the stroke of one cylinder rod is greater than that of the other, there is a gap between the main paper feed roller and the auxiliary paper feed roller on the side with the larger cylinder rod stroke, while the auxiliary paper feed roller frame on the other side does not rotate, resulting in no gap between the main paper feed roller and the auxiliary paper feed roller on that side, which will cause the paper feed to deviate. The slider 7 and spring 18 are set so that when one cylinder has a stroke and the other cylinder has no stroke, the slider 7 in the auxiliary paper feed frame on the side with the stroke cylinder moves down, while the slider in the auxiliary paper feed frame on the side with the no stroke cylinder does not move. There is still no gap between the main paper feed roller and the auxiliary paper feed roller on the side where the slider 7 does not move. Therefore, due to the different strokes of the cylinder rods on both sides, the pressure adjustment between the auxiliary paper feed roller surface and the main paper feed roller surface is achieved by adjusting the adjusting rods 16, springs 18, and sliders 7 at both ends of the auxiliary paper feed roller 1, so that the pressure between the auxiliary paper feed roller surface and the main paper feed roller surface is uniform.

[0022] The preload of the slider 7 described in this solution is adjustable, and the preload is adjusted by the two handles at the upper end of the adjusting rod 16.

[0023] In this scheme, the lifting of the auxiliary paper feed roller 8 may not be achieved even if the cylinder rod 14 is rotated due to the spring 18 installed on the slider 7 (due to the spring compensation effect). In this case, it is necessary to adjust the handle 19 by loosening the adjusting rod 16 so that the spring 18 is not compressed at all. After adjustment, tighten the handle 19 of the adjusting rod 16. The tightening process is the process of providing preload.

[0024] The paper feeding mechanism in this design is used as the primary paper feeding unit of the slitting machine. The entire slitting machine is equipped with two sets of paper feeding mechanism units via frame 5. In this design, the first set of paper feeding mechanism unit a is located at the front end of frame 5. The second set of paper feeding mechanism unit b is arranged parallel to the rear end of the first set of paper feeding mechanism unit a. A cutting mechanism and an inclined paper feeding slide 23 are arranged on the frame 5 at the rear end of the second set of paper feeding mechanism unit b. The roll of paper passes through the first set of paper feeding mechanism unit a at the front end, then through the second set of paper feeding mechanism unit b, is slit, and is then conveyed by the paper feeding slide 23 at the rear end of the second set of paper feeding mechanism unit b.

[0025] In the above overall structure, the paper roll is fed from the right end to the left end of the frame 5. The two main paper feeding rollers 2 in the two sets of paper feeding mechanism units are powered by their respective motors 24, and the two main paper feeding rollers 2 rotate counterclockwise. The two auxiliary paper feeding rollers 1 are driven rollers.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A paper feeding mechanism for a slitting machine, characterized in that, include: The auxiliary paper feed roller and the main paper feed roller are arranged tangentially at the top and bottom. The two ends of the main paper feed roller are rotatably connected to the main paper feed roller seat through the main paper feed roller shaft. The main paper feed roller seat is connected to the frame. The two ends of the auxiliary paper feed roller are connected to the auxiliary paper feed roller assembly through the auxiliary paper feed roller shaft. The auxiliary paper feed roller assembly is connected via a lifting mechanism. One end of the lifting mechanism is rotatably connected to the auxiliary paper feed roller assembly, and the other end is rotatably connected to the frame. The auxiliary paper feed roller assembly is equipped with a slider, and the slider is equipped with an adjustment pre-tightening mechanism.

2. The paper feeding mechanism of a slitting machine according to claim 1, characterized in that: The auxiliary paper feed roller assembly includes: an auxiliary paper feed roller frame, an auxiliary paper feed roller seat, and fastening bolts; both ends of the auxiliary paper feed roller are connected to the auxiliary paper feed roller seat via auxiliary paper feed roller shafts, and the auxiliary paper feed roller seat and the slider slidably disposed in the auxiliary paper feed roller frame are connected together by fastening bolts.

3. The paper feeding mechanism of a slitting machine according to claim 2, characterized in that: The auxiliary paper feed roller frame has a cavity for accommodating the slider, and slide rails that cooperate with the slider are provided on both sides of the cavity. The slider is slidably disposed in the auxiliary paper feed roller frame.

4. The paper feeding mechanism for a slitting machine according to claim 2, characterized in that: The lifting mechanism is a lifting cylinder, model MAL32*15-S.

5. The paper feeding mechanism for a slitting machine according to claim 4, characterized in that: The top of the cylinder rod of the lifting cylinder is rotatably connected to the auxiliary paper feeding roller frame, and one end of the rodless chamber of the lifting cylinder is rotatably connected to the machine frame through the cylinder seat.

6. The paper feeding mechanism for a slitting machine according to claim 3, characterized in that: The upper end of the cavity housing the slider of the auxiliary paper feed roller frame is open, and the adjustment pre-tightening mechanism is set at the opening and connected to the upper end of the slider; the adjustment pre-tightening mechanism includes: an adjusting rod, a spring seat, a spring, and a handle connected to the top of the adjusting rod; a top plate is set at the opening position of the cavity of the auxiliary paper feed roller frame, and an internal thread hole that matches the external thread of the adjusting rod is opened on the top plate. The adjusting rod passes through the top plate and is connected to the spring seat. A spring is set in the spring seat and the spring is connected to the slider.

7. The paper feeding mechanism for a slitting machine according to claim 2, characterized in that: The lower part of the main paper feed roller holder is fitted onto the frame, and the upper part of the main paper feed roller holder is fitted and positioned with the auxiliary paper feed roller holder. One side of the auxiliary paper feed roller holder is rotatably connected to the main paper feed roller holder through the first connecting shaft, so that the auxiliary paper feed roller holder can rotate relative to the main paper feed roller holder around the first connecting shaft.

8. The paper feeding mechanism of a slitting machine according to claim 5, characterized in that: The top of the cylinder rod of the lifting cylinder is rotatably connected to the auxiliary paper feeding roller frame via the second connecting shaft.

9. A paper feeding mechanism for a slitting machine according to claim 7, characterized in that: The positioning of the upper part of the main feed roller holder and the auxiliary feed roller holder is formed by the positioning surface of the main feed roller holder and the positioning surface of the auxiliary feed roller holder.

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