A paper guiding device with safety protection function for a paper pad machine and a paper pad machine comprising the same

Abstract

The utility model discloses a paper pad machine paper guiding device with safety protection function and paper pad machine containing it, paper pad machine paper guiding device includes starting section, intermediate section and tail section, and starting section, intermediate section, tail section are arranged in proper order along the paper feeding direction of paper pad machine's paper feeding mouth, and starting section can drive the both sides of paper to fold, and the both sides of starting section are arc surface shape, and the both sides of intermediate section are gathered from the first end to the second end direction, and the end of tail section close to paper pad machine's paper feeding mouth and paper pad machine's paper feeding mouth keep certain interval to prevent the finger from entering paper pad machine's paper feeding mouth. The paper pad machine paper guiding device of the utility model can realize the safety protection and paper feeding guidance of paper pad machine paper feeding mouth two functions, and two function modules of safety protection and paper guiding are integrated in one, and the installation space of equipment is saved, and the whole machine layout is more reasonable.

Description

Technical Field

[0001] This utility model relates to a paper feeding guide device for a paper pad machine with safety protection function, and a paper pad machine including the same. Background Technology

[0002] A paper padding machine is a packaging equipment used to process paper into paper pads to fill the inside of packaging boxes, so as to provide cushioning and shock absorption and protect products from damage during transportation.

[0003] In existing technologies, the paper inlet of small paper feeders generally adopts an open trumpet-shaped structure. This structure exposes the active and driven paper feed rollers inside the machine to the operator's reach. During operation, the operator's fingers are easily caught between the high-speed rotating rollers along with the paper, posing a significant risk of mechanical pinching and seriously threatening the operator's personal safety. Current designs rely solely on safety warning signs and lack a physical safety protection structure integrated into the paper inlet itself that can fundamentally prevent human parts from entering the dangerous area.

[0004] In existing technologies, the main technical means to address the safety hazard of operators inserting their fingers into the paper feed port and touching the internal paper feeding rollers is to reduce the radial dimension at the end of the paper feed port to form a physical limiting structure. This structure aims to prevent human fingers from reaching the dangerous area by restricting the passage diameter. However, the narrow limiting structure causes severe friction and interference between the fed paper and the inner wall of the paper feed port, significantly increasing the internal pulling force required for paper feeding and reducing the smoothness of paper feeding. The increased paper feeding resistance is directly converted into an additional load on the active paper feeding rollers and their drive motor. This additional load can easily cause an increase in the motor's operating current, posing an overload risk and forcing the system to reduce the paper feeding speed to ensure operation, thereby reducing the overall production efficiency of the machine. Moreover, when the paper is forced through the narrow limiting structure, its initial shape is subjected to uncontrollable compression and deformation. This pre-deformation disrupts the consistency of the initial conditions required for subsequent folding processes in the paper pad machine, adversely affecting the fluffiness, uniformity, and stability of the cushioning performance of the final formed paper pad.

[0005] Furthermore, the existing paper pad machines' flared paper inlet only has a simple guiding function. Its shape and structure cannot effectively regulate and position the fed paper, resulting in significant randomness in the initial state of the paper when it enters the core folding mechanism (including but not limited to the feeding angle, wrinkling shape, and entry point position). This instability in the paper feeding state is directly transmitted to subsequent paper feeding processes, causing significant differences in the fluffiness, wrinkle uniformity, and overall shape of the paper pads produced by the machine. This makes it impossible to guarantee the consistency and reliability of the product's cushioning performance, affecting the final packaging quality and grade. At the same time, the existing paper pad machines lack an effective paper guiding and separation mechanism, leading to random paper feeding and the easy feeding of multiple sheets overlapping. This causes sudden changes in the load on the drive system, affecting motor life and forming stability, and indirectly increasing safety hazards.

[0006] In existing technologies, a fixed support-type guide mechanism is typically installed upstream of the paper feed inlet of a paper feeder to initially unfold the folded paper before it enters the inlet. This support-type guide mechanism has a simple structure, but its guide surface shape and angle lack precise design for the mechanical behavior of the paper. It cannot effectively correct or constrain non-ideal feeding postures such as skewing or bending of the paper, and cannot guarantee that the paper enters the feed rollers in a constant and ideal posture. Furthermore, the support-type guide mechanism itself may intrude into the paper feed path, creating local interference points. Under certain operating conditions, this not only fails to promote paper feeding but may also negatively impact the paper feed speed.

[0007] Therefore, overcoming the aforementioned technical deficiencies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a paper feeding guide device for a paper pad machine with safety protection function, and a paper pad machine including the same, so as to solve at least one of the above-mentioned technical problems.

[0009] According to one aspect of this utility model, a paper feeding guide device for a paper pad machine with safety protection function is provided, comprising a starting section, a middle section, and a tail section, wherein the starting section, the middle section, and the tail section are arranged sequentially along the paper feeding direction of the paper pad machine's inlet.

[0010] The initial section causes the paper to bend on both sides. The two corners on both sides of the initial section are arc-shaped to reduce the frictional force exerted on the paper at the two corners of the initial section.

[0011] The width of the first end of the middle section is no greater than the maximum width of the starting section, the width of the second end of the middle section is no less than the maximum width of the tail section, and the two sides of the middle section taper from the first end to the second end.

[0012] The end of the tail section near the paper feed inlet of the paper pad machine is kept at a certain distance from the paper feed inlet of the paper pad machine to prevent fingers from being inserted into the paper feed inlet of the paper pad machine.

[0013] This invention relates to a paper feeding guide device for a paper pad machine, installed at the paper inlet of the paper pad machine. The starting section, middle section, and tail section are arranged sequentially along the paper feeding direction of the inlet. The end of the tail section maintains a certain distance from the paper inlet. The raw paper is usually placed below the starting section, and its width is typically greater than the maximum width of the starting section. The starting end of the paper is routed around the top of the starting section and enters the paper inlet of the paper pad machine above the middle and tail sections. During the paper feeding process, the starting section can drive the two sides of the paper to bend downwards, thus pre-deforming the two sides of the paper. Since the two corners of the starting section are arc-shaped, this reduces the frictional force exerted on the paper at the two corners, allowing the paper to be pulled more smoothly and with lower resistance. Because the two sides of the middle section converge from the first end to the second end, under the action of the middle section, the two sides of the paper will continue to bend towards the center to form a narrower, three-dimensional paper material that enters the paper inlet of the paper pad machine. This invention's paper feeding guide device can adjust the paper feeding process of the paper pad machine. The paper feeding device precisely guides the shape and angle of the paper entering the paper feed inlet, controlling the contraction state of the paper. It can promptly correct and constrain non-ideal feeding postures such as skewing and bending, ensuring that the paper enters the paper feed inlet of the paper pad machine in a stable and smooth manner. This ensures a natural, low-resistance guiding and converging effect on the paper fed into the paper feed inlet, guaranteeing the stability of the fluffiness, uniformity, and cushioning performance of the produced paper pads. Moreover, the end of the tail section near the paper feed inlet of the paper pad machine maintains a certain distance from the paper feed inlet, which does not affect the paper entering the paper feed inlet of the paper pad machine, and also prevents adult fingers from sticking into the paper feed inlet of the paper pad machine. By controlling the size of the distance, it can be physically ensured that adult fingers cannot pass through the paper feed inlet and touch the internal paper feeding rollers, achieving inherent safety. This utility model of paper pad machine paper feeding guide device can realize two functions: safety protection and paper feeding guidance of the paper feed inlet of the paper pad machine. It integrates the two major functional modules of safety protection and paper feeding guidance into one, saving installation space and making the overall layout of the machine more reasonable.

[0014] In some implementations, the starting section, the middle section, and the tail section can be integrally formed and connected in sequence along the paper feeding direction of the paper feed inlet of the paper pad machine, and both sides of the starting section, the middle section, and the tail section are arc-shaped.

[0015] Therefore, the one-piece forming of the starting section, middle section, and tail section allows for a smooth transition in the bending deformation of the paper on both sides, allowing it to smoothly shrink into a three-dimensional paper material with a smaller width. The curved surfaces on both sides of the starting section, middle section, and tail section can guide the paper to gradually bend downwards and deform. Furthermore, it can reduce the frictional force exerted on the paper by the starting section, middle section, and tail section, allowing the paper to be pulled more smoothly and with less resistance.

[0016] In some implementations, the starting segment may be a roller, with both ends of the roller having an arc shape.

[0017] Therefore, before feeding the paper, the starting end of the paper is routed around the top of the roller and enters the paper feed inlet of the paper pad machine from the top of the middle and tail sections. During the paper feeding process, the arc-shaped ends of the roller can drive the two sides of the paper to bend downwards, pre-deforming the two sides of the paper.

[0018] In some implementations, the middle section and the tail section can be integrally formed and connected sequentially along the paper feeding direction of the paper feed inlet of the paper pad machine, and both sides of the middle section and the tail section are arc-shaped.

[0019] Therefore, the one-piece molded middle and tail sections allow for a smooth transition in the bending deformation of the paper on both sides, smoothly shrinking into a three-dimensional paper material with a smaller width. The curved surfaces on both sides of the middle and tail sections can guide the paper to gradually bend downwards and deform, and can also reduce the friction force exerted on the paper by the middle and tail sections, allowing the paper to be pulled more smoothly.

[0020] In some implementations, the middle positions on both sides of the middle section may be bulging.

[0021] This effectively reduces the turning angles at both ends of the starting and ending sections, preventing excessive turning angles that could increase friction on the paper, affect paper feeding, and scratch the paper, thus ensuring smoother paper traction.

[0022] In some implementations, the top of the middle section may not be lower than the top of the starting section and the top of the tail section, and the top of the middle section and the top of the starting section may be connected by an arc-shaped transition.

[0023] Therefore, ensuring that the top of the middle section is not lower than the top of the starting and ending sections ensures that the paper is taut during the paper feeding process, preventing the paper from becoming loose and allowing the paper to enter the paper feeder in a stable and smooth manner. The arc-shaped transition reduces the frictional force on the paper at the junction of the top of the middle section and the top of the starting section, and at the junction of the top of the middle section and the top of the ending section, allowing the paper to be pulled more smoothly and with less resistance.

[0024] In some embodiments, a recess may be provided at the middle position of the top of the tail section.

[0025] Therefore, before the paper is fed, the starting end of the paper can be easily inserted into the paper feed port of the paper pad machine by passing through the indentation.

[0026] In some implementations, the maximum width of the starting segment is less than the width of the paper processed by the paper pad machine.

[0027] This ensures that the two ends of the initial section during the paper feeding process can drive the two sides of the paper to bend downwards, thus achieving pre-deformation of the two sides of the paper.

[0028] In some embodiments, a mounting frame may also be included, with one end of the mounting frame located at the bottom of any one of the starting section, the middle section, or the tail section, and the other end of the mounting frame located on the paper pad machine.

[0029] Therefore, the paper feeding guide device of the paper pad machine can be easily installed at the paper inlet of the paper pad machine using a mounting bracket.

[0030] According to another aspect of the present invention, a paper pad machine is also provided, including a paper pad machine body and a paper pad machine paper feeding guide device. The other end of the mounting frame is located on the bottom of the paper pad machine body, and the end of the tail section near the paper inlet of the paper pad machine body maintains a certain distance from the paper inlet of the paper pad machine body to prevent fingers from being inserted into the paper inlet of the paper pad machine body.

[0031] In this paper pad machine, the raw paper is typically placed below the starting section. The width of the paper is usually greater than the maximum width of the starting section. The starting end of the paper passes over the top of the starting section and enters the paper feed inlet of the paper pad machine body from above the middle and tail sections. During the paper feeding process, the paper feeding guide device can adjust the contraction state of the paper entering the paper feed inlet of the paper pad machine body, achieving precise guidance of the shape and angle of the paper entering the feed inlet. It can promptly correct and constrain non-ideal feeding postures such as skewing and bending of the paper, allowing the paper to enter the paper feed inlet of the paper pad machine body in a stable and smooth manner, ensuring a natural, low-resistance guidance and convergence of the paper fed into the feed inlet. This design ensures the stability of the fluffiness, uniformity, and cushioning performance of the paper pads produced by the paper pad machine. Furthermore, the end of the tail section near the paper inlet maintains a certain distance from the inlet, which neither affects the paper's entry into the inlet nor prevents fingers from entering. By controlling the distance, it physically ensures that adult fingers cannot pass through the inlet and touch the paper feed rollers inside the paper pad machine, achieving inherent safety. The paper feed guide device of the paper pad machine can realize both safety protection and paper feed guidance functions at the paper inlet of the machine body. Integrating these two major functional modules into one unit saves installation space and makes the overall layout of the paper pad machine more reasonable.

[0032] In some implementations, the paper inlet of the paper pad machine body can be tapered in shape with a gradually decreasing longitudinal cross-sectional area.

[0033] Thus, after being guided by the paper feeding guide device of the paper pad machine, the paper is squeezed and contracted at the tapered paper inlet with a gradually decreasing longitudinal cross-sectional area, and is formed into a paper pad before entering the paper pad machine body.

[0034] In some implementations, the minimum distance between the end of the tail section near the paper feed inlet of the paper pad machine body and the inner wall of the paper feed inlet can be less than or equal to 5 cm.

[0035] Therefore, the 5cm maximum spacing design does not affect the paper entering the paper inlet, and also prevents adult fingers from being inserted into the port of the paper feed roller near the inside of the paper feed machine body. Physically, it ensures that adult fingers cannot pass through the paper inlet and touch the paper feed roller inside the paper feed machine body, thus achieving inherent safety.

[0036] In some implementations, the end of the tail section near the paper feed inlet of the paper pad machine body can be suspended.

[0037] Therefore, the suspended end of the tail section ensures that it will not affect the smooth entry of the deformed paper into the paper feed.

[0038] In some implementations, the end of the tail section near the paper feed inlet of the paper pad machine body extends into the plane of the end with the largest longitudinal cross-sectional area of ​​the paper feed inlet.

[0039] Therefore, this design does not affect the paper entering the paper inlet, and also prevents adult fingers from being inserted into the port of the paper feed roller near the inside of the paper feed machine body. Physically, this ensures that adult fingers cannot pass through the paper inlet and touch the paper feed roller inside the paper feed machine body, thus achieving intrinsic safety.

[0040] In some embodiments, the mounting frame may include a horizontal section and a connecting section. One end of the horizontal section is located on the bottom of the paper pad machine body, and one end of the connecting section is located on the other end of the horizontal section. The other end of the connecting section is located on the bottom of any one of the starting section, the middle section, and the tail section.

[0041] Therefore, the mounting frame consists of a horizontal part and a connecting part. This allows the connecting part to be located away from the plane where the longitudinal cross-sectional area of ​​the paper inlet is the largest, preventing the connecting part from affecting the paper feed and avoiding the deformed paper from rolling on the connecting part.

[0042] In some implementations, the connecting portion and the horizontal portion can be arranged at an obtuse angle so that the other end of the connecting portion is away from the plane containing the end with the largest longitudinal cross-sectional area of ​​the paper feed.

[0043] Therefore, arranging the connecting part and the horizontal part at an obtuse angle can prevent the connecting part from affecting the paper feed and avoid the deformed paper from rolling onto the connecting part.

[0044] In some implementations, the mounting position of the mounting bracket on the bottom of the paper pad machine body is adjustable.

[0045] Therefore, based on the shape of the inner wall of the paper inlet, the mounting position of the mounting bracket on the bottom of the paper pad machine body can be adjusted, thereby adjusting the distance between the end of the paper inlet near the paper pad machine body and the inner wall of the paper inlet, so that the distance does not affect the paper entering the paper inlet, and also prevents adult fingers from being inserted into the port of the paper feed roller near the inside of the paper pad machine body. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of a paper feeding guide device for a paper pad machine with safety protection function according to one embodiment of the present invention;

[0047] Figure 2 for Figure 1 A schematic diagram of the paper feeding guide device of the paper pad machine from another perspective;

[0048] Figure 3 for Figure 1 The diagram shows the structure of the paper feeding guide device for the paper pad machine along direction A.

[0049] Figure 4 for Figure 1 The diagram shows the structure of the paper feeding guide device for the paper pad machine along direction B.

[0050] Figure 5 for Figure 1 The diagram shows the structure of the paper feeding guide device for the paper pad machine along direction C.

[0051] Figure 6 This is a schematic diagram of the structure of a paper pad machine according to one embodiment of the present invention;

[0052] Figure 7 for Figure 6 A structural schematic diagram of the paper pad machine from another perspective;

[0053] Figure 8 for Figure 6 The diagram shown is a structural schematic of the paper pad machine along direction D.

[0054] Figure 9 for Figure 8 The diagram shows a cross-sectional view of the paper pad machine along the FF direction.

[0055] Figure 10 for Figure 6 The diagram shown is a structural schematic of the paper pad machine along direction E.

[0056] Figure 11 for Figure 10 The diagram shows a cross-sectional view of the paper pad machine along the GG direction.

[0057] Figure 12 for Figure 6The diagram shown illustrates the usage status of the paper pad machine. Detailed Implementation

[0058] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0059] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., 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. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication of two components.

[0060] Figures 1 to 5 The diagram schematically illustrates the structure of a paper feeding guide device for a paper pad machine with safety protection function according to one embodiment of the present invention.

[0061] refer to Figures 1 to 5 A paper feeding guide device for a paper pad machine with safety protection features includes a starting section 1, a middle section 2, and a tail section 3. Furthermore, the paper feeding guide device may also include a mounting frame 4.

[0062] refer to Figure 5 The starting segment 1, the middle segment 2, and the ending segment 3 are arranged from bottom to top, with the first end of the middle segment 2 ( Figure 5 The width of the lower end of the middle segment 2 is not greater than the maximum width of the starting segment 1. The maximum width of the starting segment 1 is the width between the two corners at the left and right ends of the starting segment 1. The second end of the middle segment 2 ( Figure 5The width of the upper end of the middle section 2 is not less than the maximum width of the tail section 3. The two sides of the middle section 2 taper from the first end to the second end. When the paper feeding guide device of the paper pad machine is installed on the paper pad machine, the starting section 1, the middle section 2, and the tail section 3 are arranged sequentially along the paper feeding direction of the paper pad machine's inlet 51. The end of the tail section 3 near the paper pad machine's inlet 51 maintains a certain distance from the paper pad machine's inlet 51 to prevent fingers from being inserted into the paper pad machine's inlet. Figure 6 (As shown); In this embodiment, the starting segment 1, the middle segment 2, and the tail segment 3 are integrally formed and connected in sequence. The starting segment 1, the middle segment 2, and the tail segment 3 are generally conical in shape, as shown in the reference. Figure 1 The starting section 1, middle section 2, and ending section 3 all have curved sides. The one-piece molding of these sections allows for a smooth transition in the bending deformation of the paper's sides, smoothly shrinking it into a narrow, three-dimensional paper material. The curved sides of these sections guide the paper's sides to gradually bend downwards, and also reduce the friction exerted on the paper by these sections, allowing for smoother, lower-resistance traction. During use, the paper pad... The width of the machined paper is usually greater than the maximum width of the starting section 1. The raw paper is usually placed below the starting section 1. The starting section 1 can drive the two sides of the paper to bend. The starting section 1 pre-deforms the two sides of the paper. Since the two sides of the middle section 2 are tapered from the first end to the second end, that is, the starting section 1, the middle section 2, and the tail section 3 are cone-shaped as a whole. Under the action of the middle section 2, the two sides of the paper will continue to bend towards the middle to form a three-dimensional paper material with a smaller width and enter the paper feed port 51 of the paper pad machine.

[0063] refer to Figure 4 and Figure 5 The two corners of the starting segment 1 are both arc-shaped, which reduces the frictional force exerted on the paper by the two corners of the starting segment 1, allowing the paper to be pulled more smoothly and with less resistance.

[0064] In this embodiment, the maximum width of the starting segment 1 is less than the width of the paper processed by the paper pad machine. For example, the maximum width of the starting segment 1 is at least 4 to 6 cm less than the width of the paper. When feeding the paper, it is preferable that the paper goes around the top of the starting segment 1 and the center line of the paper is fed along the middle of the starting segment 1. The two sides of the paper are bent by at least 2 to 3 cm at both ends of the starting segment 1. This can make the pre-deformation effect of the starting segment 1 on the two sides of the paper better.

[0065] In other embodiments, the starting segment 1 can be a single roller with both ends being arc-shaped, such as conical, hemispherical, or curved. The width of the first end of the middle segment 2 is not greater than the maximum width of the roller, and the width of the second end of the middle segment 2 is not less than the maximum width of the tail segment 3. The two sides of the middle segment 2 taper from the first end to the second end. The middle segment 2 and the tail segment 3 are integrally formed and connected sequentially along the paper feeding direction of the paper feed inlet 51 of the paper pad machine. The length of the roller is less than the width of the paper processed by the paper pad machine. The two sides of the middle segment 2 and the tail segment 3 are arc-shaped. The integrally formed middle segment 2 and tail segment 3 can smoothly transition the bending deformation on both sides of the paper and smoothly shrink. The paper is formed into a three-dimensional shape with a narrow width. The middle section 2 and the tail section 3 are both curved on both sides, which can guide the two sides of the paper to gradually bend downward and deform. It can also reduce the friction force on the paper on both sides of the middle section 2 and the tail section 3, so that the paper is pulled more smoothly. Before the paper is fed, the starting end of the paper passes over the top of the roller and enters the paper feed port 51 of the paper pad machine from the top of the middle section 2 and the tail section 3. During the paper feeding process, the curved ends of the roller can drive the two sides of the paper to bend downward, pre-deform the two sides of the paper. Under the action of the middle section 2, the two sides of the paper will continue to bend towards the middle to form a three-dimensional paper with a narrow width and enter the paper feed port 51 of the paper pad machine.

[0066] refer to Figure 1 and Figure 5 In this embodiment, the middle positions of both sides of the middle section 2 are bulging. This effectively reduces the turning angles at both ends of the starting section 1 and the tail section 3, preventing excessive turning angles that would increase friction on the paper, affecting paper feeding and causing paper scratches. This ensures smoother paper traction. Furthermore, both sides of the middle section 2 are arc-shaped, smoothly transitioning with the arc surfaces of both sides of the starting section 1 and the tail section 3. This reduces friction on the paper at the junctions between the middle section 2 and the starting section 1, and between the middle section 2 and the tail section 3, resulting in smoother, lower-resistance paper traction. In other embodiments, the bulge height at the middle positions of both sides of the middle section 2 can be adjusted appropriately according to paper feeding requirements and the turning angles at both ends of the starting section 1 and the tail section 3. Alternatively, the sides of the middle section 2 can be straight.

[0067] refer to Figure 3The top of the middle section 2 is not lower than the top of the starting section 1, and the top of the middle section 2 is not lower than the top of the tail section 3. The top of the middle section 2 and the top of the starting section 1 form an arc-shaped transition, and the top of the middle section 2 and the top of the tail section 3 form an arc-shaped transition. Since the raw paper is usually placed below the starting section 1, the starting end of the paper is bypassed above the starting section 1 and enters the paper feed inlet of the paper pad machine from above the middle section 2 and the tail section 3. The fact that the top of the middle section 2 is not lower than the top of the starting section 1 and the tail section 3 can ensure that the paper is taut during the paper feeding process, prevent the paper from loosening, and allow the paper to enter the paper feed inlet of the paper pad machine in a stable and smooth manner. The arc-shaped transition can reduce the frictional force on the paper at the junction of the top of the middle section 2 and the top of the starting section 1, and the junction of the top of the middle section 2 and the top of the tail section 3, so that the paper is pulled more smoothly and with less resistance.

[0068] refer to Figure 1 and Figure 3 In this embodiment, the top of the middle section 2 is flat, and the transition between the top of the middle section 2 and the curved surfaces on both sides is an arc-shaped transition. This reduces the frictional force on the paper at the junction of the top of the middle section 2 and the sides, allowing the paper to be pulled more smoothly and with less resistance. In other embodiments, depending on the paper feeding requirements, the top of the middle section 2 can also be arched, with an arc-shaped transition between the top of the middle section 2 and the curved surfaces on both sides, an arc-shaped transition between the top of the middle section 2 and the top of the starting section 1, and an arc-shaped transition between the top of the middle section 2 and the top of the tail section 3. This reduces the frictional force on the paper at the junctions of the top of the middle section 2 and the sides, the junction of the top of the middle section 2 and the top of the starting section 1, and the junction of the top of the middle section 2 and the top of the tail section 3, allowing the paper to be pulled more smoothly and with less resistance.

[0069] refer to Figure 1 The top of the tail section 3 has a recess 31 formed in the middle. Before the paper is fed, the starting end of the paper can be easily inserted into the paper feed port of the paper pad machine by passing through the recess 31.

[0070] refer to Figures 1 to 5 One end of the mounting bracket 4 is fixed to the bottom of any one of the starting section 1, the middle section 2, or the tail section 3. The other end of the mounting bracket 4 is used to mount it on the paper pad machine. In this embodiment, refer to... Figure 2 One end of the mounting bracket 4 is fixed in the recess at the bottom of the middle section 2. The paper feeding guide device of this utility model can be easily installed at the paper inlet of the paper pad machine through the mounting bracket 4.

[0071] refer to Figures 1 to 5The paper feeding guide device of this utility model is installed at the paper inlet of the paper pad machine. The starting section 1, the middle section 2, and the tail section 3 are arranged sequentially along the paper feeding direction of the paper pad machine. The end of the tail section 3 maintains a certain distance from the paper inlet of the paper pad machine. The raw paper is usually placed below the starting section 1, and the width of the paper is usually greater than the maximum width of the starting section 1. The starting end of the paper is wrapped around the top of the starting section 1 and passes through the recess 31 above the middle section 2 and the tail section 3 before being inserted into the paper inlet of the paper pad machine. During the paper feeding process... The starting section 1 can drive the two sides of the paper to bend downwards, thereby pre-deforming the two sides of the paper. Since the two sides of the middle section 2 are tapered from the first end to the second end, that is, the starting section 1, middle section 2, and tail section 3 are conical in shape as a whole, the two sides of the paper will continue to bend towards the middle to form a three-dimensional paper material with a smaller width and enter the paper feed inlet of the paper pad machine. Since the two sides of the starting section 1, middle section 2, and tail section 3 are all arc-shaped, and the two corners of the starting section 1 are also arc-shaped, the paper feeding guide device of the paper pad machine can guide... The paper gradually bends downwards on both sides, reducing the friction on the paper from the sides of the starting section 1, middle section 2, and tail section 3, as well as the two corners of the starting section 1. This allows the paper to be pulled more smoothly and with less resistance. Furthermore, the middle sections of the middle section 2 are bulging, effectively reducing the turning angles at the ends of the starting section 1 and tail section 3. This prevents excessive turning angles at the ends of the starting section 1 and tail section 3 from increasing friction on the paper, affecting paper feeding, and scratching the paper, thus ensuring smoother paper pulling. Furthermore, the fact that the top of the middle section 2 is not lower than the top of the starting section 1 and the top of the tail section 3 ensures that the paper is taut during the paper feeding process, preventing the paper from becoming loose, and allowing the paper to enter the paper feed inlet of the paper pad machine in a stable and smooth manner. The arc-shaped transition between the top of the middle section 2 and the top of the starting section 1, and between the top of the middle section 2 and the top of the tail section 3, can reduce the frictional force on the paper at the joint between the top of the middle section 2 and the top of the starting section 1, and at the joint between the top of the middle section 2 and the top of the tail section 3, so that the paper is pulled more smoothly and with less resistance.This utility model's paper feeding guide device for a paper pad machine can adjust the contraction state of the paper entering the paper pad machine's inlet, achieving precise guidance of the paper's shape and angle. It can promptly correct and constrain non-ideal feeding postures such as skewing and bending, ensuring the paper enters the paper pad machine's inlet in a stable and smooth manner. This ensures a natural, low-resistance guiding and converging effect on the paper entering the inlet, guaranteeing the stability of the produced paper pad's fluffiness, uniformity, and cushioning performance. Furthermore, the end of the tail section 3 near the paper pad machine's inlet... The paper feed inlet of the paper padding machine maintains a certain distance, which neither affects the paper entering the paper feed inlet nor prevents adult fingers from sticking into it. By controlling the distance, it is physically ensured that adult fingers cannot pass through the paper feed inlet and touch the internal paper feeding rollers, achieving inherent safety. This utility model's paper feeding guide device for the paper padding machine can realize both safety protection and paper feeding guidance functions, integrating these two major functional modules into one, saving installation space and making the overall layout of the machine more reasonable.

[0072] Figures 6 to 11 The structure of a paper pad machine according to one embodiment of the present invention is shown schematically.

[0073] refer to Figures 6 to 11 The paper pad machine includes the paper pad machine body 5 and the aforementioned paper pad machine paper feeding guide device.

[0074] refer to Figure 6 and Figure 7 The end of the mounting bracket 4 of the paper feeding guide device of the paper pad machine is installed on the bottom of the paper pad machine body 5. The end of the tail section 3 of the paper feeding guide device of the paper pad machine near the paper inlet 51 of the paper pad machine body 5 is kept at a certain distance from the paper inlet 51 of the paper pad machine body 5 to prevent fingers from being inserted into the paper inlet 51 of the paper pad machine body 5.

[0075] In this embodiment, reference Figure 6 , Figure 7 , Figure 9 and Figure 11 The paper inlet 51 of the paper pad machine body 5 is a tapered shape with a gradually decreasing longitudinal cross-sectional area, that is, an open trumpet shape. After the paper is guided by the paper feeding guide device of the paper pad machine, it is squeezed and contracted at the tapered paper inlet 51 with a gradually decreasing longitudinal cross-sectional area and is formed into a paper pad before entering the paper pad machine body 5.

[0076] refer to Figure 8 and Figure 9In this embodiment, the minimum distance L between the end of the tail section 3 near the paper inlet 51 of the paper feed machine body 5 and the inner wall of the paper inlet 51 is less than or equal to 5cm. This 5cm maximum distance design does not affect the paper entering the paper inlet 51, and also prevents adult fingers from entering the port of the paper feed roller near the inside of the paper feed machine body 5. Physically, this ensures that adult fingers cannot pass through the paper inlet 51 and touch the paper feed roller inside the paper feed machine body 5, achieving intrinsic safety. In other embodiments, the size of L can be appropriately adjusted according to the specific shape of the inner wall of the paper inlet 51.

[0077] refer to Figure 9 and Figure 11 The end of the tail section 3 near the paper inlet 51 of the paper press body 5 is suspended, which ensures that the end of the tail section 3 will not affect the smooth entry of the deformed paper into the paper inlet 51.

[0078] refer to Figure 11 In this embodiment, the end 100 of the tail section 3 near the paper inlet 51 of the paper feed machine body 5 extends into the plane 200 where the end with the largest longitudinal cross-sectional area of ​​the paper inlet 51 is located. This does not affect the paper entering the paper inlet 51, and it can also prevent adult fingers from being inserted into the port of the paper feed roller inside the paper feed machine body 5 near the paper feed roller inside the paper feed machine body 5. Physically, it ensures that adult fingers cannot pass through the paper feed 51 and touch the paper feed roller inside the paper feed machine body 5, thus achieving intrinsic safety. The size of the end 100 extending into the plane 200 can be appropriately adjusted according to the specific shape of the inner wall of the paper feed 51.

[0079] refer to Figure 6 The raw paper is placed below the starting section 1, and the width of the paper is greater than the maximum width of the starting section 1. The starting end of the paper is wrapped around the top of the starting section 1 and fed from the middle of the starting section 1. The paper passes through the recess 31 above the middle section 2 and the tail section 3 and enters the paper inlet 51 of the paper pad machine body 5. During the paper feeding process, the path of the middle of the paper is different from the path of the two sides of the paper. The middle of the paper enters the paper inlet 51 of the paper pad machine body 5 from the top of the starting section 1, the middle section 2, and the tail section 3, while the two sides of the paper enter the paper inlet 51 of the paper pad machine body 5 obliquely from the sides of the starting section 1, the middle section 2, and the tail section 3. This drives the two sides of the paper to bend downward for pre-deformation and the two sides of the paper to continue to bend towards the middle to form a three-dimensional paper material with a smaller width and enter the paper inlet 51 of the paper pad machine body 5. Figure 12 (As shown).

[0080] refer to Figure 3 , Figures 6 to 11The mounting frame 4 includes a horizontal part 41 and a connecting part 42. One end of the horizontal part 41 can be installed on the bottom of the paper feeder body 5 by screws. One end of the connecting part 42 is integrally formed and connected to the other end of the horizontal part 41. The other end of the connecting part 42 is fixed to the bottom of any one of the starting section 1, the middle section 2, and the tail section 3 by screws. Specifically, the end of the connecting part 42 is fixed in the cavity at the bottom of the middle section 2 by screws. The mounting frame 4 is composed of the horizontal part 41 and the connecting part 42. This allows the connecting part 42 to be away from the plane 200 where the end with the largest longitudinal cross-sectional area of ​​the paper inlet 51 is located, preventing the connecting part 42 from affecting the paper feed and avoiding the deformed paper from rolling on the connecting part 42.

[0081] refer to Figure 11 In this embodiment, the connecting part 42 and the horizontal part 41 are arranged at an obtuse angle. This allows the part of the connecting part 42 fixed at the bottom of the middle section 2 to be as far away as possible from the plane 200 where the end with the largest longitudinal cross-sectional area of ​​the paper inlet 51 is located, preventing the connecting part 42 from affecting the paper feed and avoiding the deformed paper from rolling on the connecting part 42.

[0082] The mounting position of the mounting bracket 4 on the bottom of the paper pad machine body 5 is adjustable. Specifically, the mounting position of the horizontal part 41 of the mounting bracket 4 on the bottom of the paper pad machine body 5 is adjustable. According to the specific shape of the inner wall of the paper inlet 51, the mounting position of the horizontal part 41 of the mounting bracket 4 on the bottom of the paper pad machine body 5 can be adjusted, thereby adjusting the distance between the end of the tail section 3 near the paper inlet 51 of the paper pad machine body 5 and the inner wall of the paper inlet 51, so that the distance does not affect the paper entering the paper inlet 51, and also prevents adult fingers from sticking into the paper inlet. In the port of the paper feeding roller near the inside of the paper pad machine body 5, for example, an elongated oval mounting hole is formed on the horizontal part 41. The screw passes through the elongated oval mounting hole on the horizontal part 41 to fix the horizontal part 41 to the bottom of the paper pad machine body 5. When it is necessary to adjust the distance between the end of the tail section 3 near the paper inlet 51 of the paper pad machine body 5 and the inner wall of the paper inlet 51, loosen the screw on the horizontal part 41. After the distance between the end of the tail section 3 and the inner wall of the paper inlet 51 is adjusted, tighten the screw on the horizontal part 41. It is very convenient.

[0083] refer to Figures 6 to 12 In this paper pad machine, the raw material paper 300 is placed below the starting section 1, and the width of the paper is greater than the maximum width of the starting section 1. The starting end of the paper is wrapped around the top of the starting section 1, and the center line of the paper is fed along the middle of the starting section 1. The paper passes through the recess 31 from the top of the middle section 2 and the tail section 3 and enters the paper inlet 51 of the paper pad machine body 5. Figure 12As shown), during the paper feeding process, the paper feeding guide device of the paper pad machine can adjust the shrinkage state of the paper entering the paper inlet 51 of the paper pad machine body 5, so as to accurately guide the shape and angle of the paper entering the paper inlet 51. It can promptly correct and constrain the non-ideal feeding posture of the paper such as skewing and bending, so that the paper enters the paper inlet 51 of the paper pad machine body 5 in a stable and smooth posture. This ensures that the paper fed into the paper inlet 51 forms a natural, low-resistance guiding and converging effect, ensuring the stability of the fluffiness, uniformity and cushioning performance of the paper pads produced by the paper pad machine. Moreover, the tail section 3 is close to the paper inlet 51. The end of the paper feed is kept at a certain distance from the paper inlet 51, which does not affect the paper entering the paper inlet 51, and also prevents adult fingers from sticking into the paper inlet 51. By controlling the size of the distance, it can be physically ensured that adult fingers cannot pass through the paper inlet 51 and touch the paper feeding roller inside the paper pad machine body 5, thus achieving inherent safety. The paper feeding guide device of the paper pad machine can realize the two functions of safety protection and paper feeding guidance of the paper inlet 51 of the paper pad machine body 5. The two major functional modules of safety protection and paper feeding guidance are integrated into one, saving the installation space of the paper pad machine and making the overall layout of the paper pad machine more reasonable.

[0084] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A paper feeding guide device for a paper pad machine with safety protection function, characterized in that, It includes a starting section, a middle section, and a tail section, which are arranged sequentially along the paper feeding direction of the paper feed inlet of the paper pad machine. The starting segment can cause the paper to bend on both sides, and the two corners on both sides of the starting segment are arc-shaped to reduce the frictional force exerted on the paper by the two corners of the starting segment. The width of the first end of the middle section is not greater than the maximum width of the starting section, the width of the second end of the middle section is not less than the maximum width of the tail section, and the two sides of the middle section taper from the first end to the second end. The end of the tail section near the paper feed inlet of the paper pad machine is spaced apart from the paper feed inlet of the paper pad machine to prevent fingers from being inserted into the paper feed inlet of the paper pad machine.

2. The paper feeding guide device for a paper pad machine according to claim 1, characterized in that, The starting section, middle section, and tail section are integrally formed and connected in sequence along the paper feeding direction of the paper feed inlet of the paper pad machine, and both sides of the starting section, middle section, and tail section are arc-shaped.

3. The paper feeding guide device for a paper pad machine according to claim 1, characterized in that, The starting section is a roller, and both ends of the roller are arc-shaped.

4. The paper feeding guide device for a paper pad machine according to claim 3, characterized in that, The middle section and the tail section are integrally formed and connected in sequence along the paper feeding direction of the paper feed inlet of the paper pad machine, and both sides of the middle section and the tail section are arc-shaped.

5. The paper feeding guide device for a paper pad machine according to claim 2, characterized in that, The middle positions on both sides of the middle section are bulging.

6. The paper feeding guide device for a paper pad machine according to claim 2, characterized in that, The top of the middle section is not lower than the top of the starting section and the tail section. The top of the middle section and the top of the starting section are connected by an arc-shaped surface transition. The top of the middle section and the top of the tail section are connected by an arc-shaped surface transition.

7. The paper feeding guide device for a paper pad machine according to claim 2, characterized in that, The top of the tail section has a recess in the middle.

8. The paper feeding guide device for a paper pad machine according to claim 2, characterized in that, The maximum width of the starting segment is less than the width of the paper processed by the paper pad machine.

9. The paper feeding guide device for a paper pad machine according to any one of claims 1 to 8, characterized in that, It also includes a mounting frame, one end of which is located on the bottom of any one of the starting section, the middle section, and the tail section, and the other end of which can be located on the paper pad machine.

10. A paper pad machine, characterized in that, The device includes a paper pad machine body and a paper feeding guide device as described in claim 9. The other end of the mounting frame is located on the bottom of the paper pad machine body. The end of the tail section near the paper inlet of the paper pad machine body is spaced apart from the paper inlet of the paper pad machine body to prevent fingers from being inserted into the paper inlet of the paper pad machine body.

11. The paper pad machine according to claim 10, characterized in that, The paper inlet of the paper pad machine body is tapered in shape with a gradually decreasing longitudinal cross-sectional area.

12. The paper pad machine according to claim 10, characterized in that, The minimum distance between the end of the tail section near the paper feed inlet of the paper pad machine body and the inner wall of the paper feed inlet is less than or equal to 5cm.

13. The paper pad machine according to claim 10, characterized in that, The end of the tail section near the paper inlet of the paper pad machine body is suspended in the air.

14. The paper pad machine according to claim 11, characterized in that, The end of the tail section closest to the paper feed inlet of the paper pad machine body extends into the plane containing the end with the largest longitudinal cross-sectional area of ​​the paper feed inlet.

15. The paper pad machine according to claim 11, characterized in that, The mounting frame includes a horizontal section and a connecting section. One end of the horizontal section is located on the bottom of the paper pad machine body, and one end of the connecting section is located on the other end of the horizontal section. The other end of the connecting section is located on the bottom of any one of the starting section, the middle section, and the tail section.

16. The paper pad machine according to claim 15, characterized in that, The connecting part and the horizontal part are arranged at an obtuse angle so that the other end of the connecting part is far away from the plane where the end with the largest longitudinal cross-sectional area of ​​the paper feed is located.

17. The paper pad machine according to claim 10, characterized in that, The mounting bracket is adjustable in position on the bottom of the paper pad machine body.

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