A semi-automatic paper bowl forming machine

Abstract

This invention relates to the field of paper box manufacturing technology, specifically to a semi-automatic paper bowl forming machine, comprising a paper feeding mechanism, a paper winding assembly, a heat sealing assembly, and a bowl feeding mechanism. The paper feeding mechanism includes a paper feeding drum, and the bowl feeding mechanism includes a bowl feeding drum. The paper feeding drum and the bowl feeding drum are arranged side by side. Multiple sets of paper winding assemblies are spaced apart on the outer periphery of the paper feeding drum, and multiple bowl molds with axes extending radially along the outer periphery of the bowl feeding drum are spaced apart. A heat sealing assembly is located on one radial side of each bowl mold. During operation, the paper feeding drum and the bowl feeding drum rotate in the same direction. Along the rotation path of the paper feeding drum and the bowl feeding drum, there is a sealing stroke that allows each paper winding assembly to correspond and press against each bowl mold. During the sealing stroke, the paper winding assembly bends the bowl paper sheet and wraps it around the bowl mold, and the heat sealing assembly heat-presses the bowl paper sheet. This invention can improve the production efficiency of the paper bowl forming machine.

Description

Technical Field

[0001] This invention relates to the field of paper box manufacturing technology, specifically to a semi-automatic paper bowl forming machine. Background Technology

[0002] Paper bowl forming machines are used to produce disposable paper bowls. The paper bowl forming process mainly includes bowl body forming and bowl bottom forming. Bowl body forming includes multiple steps such as paper feeding, rolling and sealing the bowl body, and bowl delivery. The bowl body forming mechanism mainly includes a paper feeding mechanism, a paper rolling assembly, a heat sealing assembly, and a bowl delivery mechanism. These mechanisms work together to roll and seal the cut paper bowl pieces into a cylindrical bowl body, which is then sent to the next processing station. In existing paper bowl forming machines, the paper feeding, rolling, and bowl delivery processes are all performed independently, which limits the production efficiency of the paper bowl forming machine. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention proposes a semi-automatic paper bowl forming machine to solve the technical problem that the paper feeding, rolling and bowl delivery processes are carried out independently in existing technologies, which limits the production efficiency of paper bowl forming machines.

[0004] The semi-automatic paper bowl forming machine of the present invention adopts the following technical solution:

[0005] A semi-automatic paper bowl forming machine includes a bowl forming mechanism, which comprises a paper feeding mechanism, a paper winding assembly, a heat sealing assembly, and a bowl feeding mechanism. The paper feeding mechanism includes a paper feeding drum, and the bowl feeding mechanism includes a bowl feeding drum. The paper feeding drum and the bowl feeding drum are arranged side by side, and their rotation axes extend vertically. Multiple sets of paper winding assemblies are spaced apart on the outer periphery of the paper feeding drum, and multiple bowl molds with axes extending radially along the bowl feeding drum are spaced apart on the outer periphery of the bowl feeding drum. A heat sealing assembly is provided on one radial side of each bowl mold. During operation, a bowl-shaped paper sheet is placed on the paper winding assembly. The paper feeding drum and the bowl feeding drum rotate in the same direction. On the rotation path of the paper feeding drum and the bowl feeding drum, there is a sealing stroke that allows each paper winding assembly to correspond and press with each bowl mold. During the sealing stroke, the paper winding assembly bends the bowl-shaped paper sheet and wraps it around the bowl mold, and the heat sealing assembly heat-presses the bowl-shaped paper sheet.

[0006] Furthermore, the roll paper assembly includes a mounting frame, and also includes an upper rotating plate and a lower rotating plate symmetrically arranged and swinging on the mounting frame. The mounting frame is located around the paper feeding drum. The swing axes of the upper and lower rotating plates extend radially along the paper feeding drum. The upper rotating plate is provided with an upper paper wrapping rod, and the lower rotating plate is provided with a lower paper wrapping rod. In the initial state, the upper and lower rotating plates are in a plane, and the bowl-shaped paper sheet can be laid on the upper and lower paper wrapping rods. The mounting frame is oscillatingly provided with a paper pressing rod, which presses the bowl-shaped paper sheet onto the upper and lower paper wrapping rods. During the sealing stroke, the upper rotating plate swings downward and the lower rotating plate swings upward, driving the upper and lower paper wrapping rods to move circumferentially along the bowl mold, so that the bowl-shaped paper sheet wraps around the outside of the bowl mold.

[0007] Furthermore, the paper roll assembly also includes a linkage system, which includes an upper gear, a lower gear, and a pusher slider. The upper gear is fixed to the swing shaft of the upper rotating plate, and the lower gear is fixed to the swing shaft of the lower rotating plate. The pusher slider is slidably mounted on the mounting frame in a direction perpendicular to the swing shaft. An upper rack that meshes with the upper gear and a lower rack that meshes with the lower gear are fixed on the pusher slider. During the sealing stroke, the bowl mold pushes the pusher slider to move, thereby driving the upper and lower rotating plates to swing.

[0008] Furthermore, a return spring is provided between the push slider and the mounting bracket. When the push slider disengages from the bowl mold, the return spring drives the push slider to reset, so that the upper and lower rotating plates are reset and form a plane.

[0009] Furthermore, a guide rod is fixed on the push slider, one end of the guide rod is movably mounted on the mounting frame, and a return spring is sleeved around the guide rod, with both ends of the return spring connected to the push slider and the mounting frame respectively.

[0010] Furthermore, a central rod extending radially along the paper feeding drum is provided between the upper and lower paper wrapping rods. The central rod is supported and engaged with the middle of the bowl-shaped paper sheet. When the bowl mold pushes the push slider, the central rod and the push slider move together in a direction perpendicular to the central rod. One end of the central rod is hinged to the push slider, and the hinge axis extends in the vertical direction. When the push slider disengages from the bowl mold, the bowl mold pushes the central rod to swing, and the central rod avoids the bowl mold.

[0011] Furthermore, a reset spring is provided on one side of the central rod, and one end of the reset spring is fixedly connected to the push slider. When the bowl mold is separated from the central rod, the reset spring drives the central rod to reset.

[0012] Furthermore, the upper paper-wrapping rod is slidably mounted on the upper rotating plate in the vertical direction, and the lower paper-wrapping rod is slidably mounted on the lower rotating plate in the vertical direction. When the upper rotating plate swings downward and the lower rotating plate swings upward at a set angle, the outer periphery of the bowl mold is pressed and engaged with the upper and lower paper-wrapping rods to drive the upper and lower paper-wrapping rods to move along the upper and lower rotating plates respectively, and the upper and lower paper-wrapping rods move along the outer periphery of the bowl mold.

[0013] Furthermore, the upper end of the upper rotating plate and the lower end of the lower rotating plate are respectively provided with sliding grooves. One end of the upper paper-wrapping rod and the lower paper-wrapping rod are slidably installed in the two sliding grooves respectively. An upper telescopic rod is movably arranged on the upper rotating plate. One end of the upper telescopic rod extends into the sliding groove of the upper rotating plate and is fixedly connected to the upper paper-wrapping rod. An upper support spring is sleeved around the upper telescopic rod. A lower telescopic rod is movably arranged on the lower rotating plate. One end of the lower telescopic rod extends into the sliding groove of the lower rotating plate and is fixedly connected to the lower paper-wrapping rod. A lower support spring is sleeved around the lower telescopic rod. After the upper paper-wrapping rod and the lower paper-wrapping rod are separated from the bowl mold, the upper support spring and the lower support spring drive the upper paper-wrapping rod and the lower paper-wrapping rod to return to their original positions.

[0014] Furthermore, the outer periphery of the paper feeding drum is provided with multiple mounting plates at intervals, each mounting plate corresponding to a paper roll assembly. Each paper roll assembly mounting frame is provided with a horizontal screw, which is spirally mounted on the mounting plate. The paper feeding drum is a regular polygonal drum, and guide rails are provided on the sides of the regular polygonal drum. The mounting frame of each paper roll assembly slides in cooperation with the guide rails on each side.

[0015] The beneficial effects of the present invention are as follows: The semi-automatic paper bowl forming machine of the present invention allows the paper rolling assembly to be squeezed and cooperated with the bowl mold during the rotation of the bowl feeding drum and the paper feeding drum. This process realizes that paper feeding, paper rolling, heat sealing and bowl feeding are carried out simultaneously, which shortens the time required for bowl forming to a certain extent and improves the production efficiency of bowl forming.

[0016] Furthermore, this invention incorporates a linkage system between the bowl mold and the paper roll assembly. During the pressing process between the bowl mold and the paper roll assembly, the upper and lower rotating plates are linked, causing the paper sheet to wrap around the bowl mold. Additionally, the upper and lower paper wrapping rods slide along the upper and lower rotating plates, maximizing the fit of the paper sheet against the bowl mold. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional schematic diagram of the bowl forming mechanism in the first embodiment of a semi-automatic paper bowl forming machine of the present invention;

[0019] Figure 2 This is a top view of the bowl forming mechanism in the first embodiment of a semi-automatic paper bowl forming machine according to the present invention;

[0020] Figure 3 for Figure 2 Sectional view along line AA;

[0021] Figure 4 for Figure 3 A magnified schematic diagram of part B in the middle;

[0022] Figure 5 for Figure 4 Another state diagram;

[0023] Figure 6 This is a three-dimensional schematic diagram of the paper roll assembly in the first embodiment of a semi-automatic paper bowl forming machine of the present invention;

[0024] Figure 7 This is a top view of the paper roll assembly in a first embodiment of a semi-automatic paper bowl forming machine according to the present invention;

[0025] Figure 8 for Figure 7 C-axis sectional view;

[0026] Figure 9 This is another perspective view of the paper roll assembly in the first embodiment of a semi-automatic paper bowl forming machine of the present invention;

[0027] Figure 10 This is a three-dimensional schematic diagram of the push slider in the first embodiment of a semi-automatic paper bowl forming machine of the present invention.

[0028] In the diagram: 200, Paper feeding mechanism; 201, Paper roll assembly; 2011, Horizontal screw; 2012, Mounting bracket; 2013, Paper pressing rod; 2014, Center rod; 2015, Upper rotating plate; 2016, Lower rotating plate; 2017, Slide groove; 2018, Upper paper wrapping rod; 2019, Upper telescopic rod; 2020, Upper support spring; 20201, Upper gear; 20202, Lower gear; 2 0203, Push slider; 20204, Reset spring; 20205, Reset spring; 20206, Guide rod; 202, Paper feeding drum; 2021, Mounting plate; 300, Bowl feeding mechanism; 301, Bowl body mold; 302, Fixing platform; 303, Heat sealing assembly; 304, Bowl feeding drum; 400, Base; 500, Bowl body paper sheet; 203, Hinge seat; 204, Upper rack. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 the invention 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 the invention.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0032] A first embodiment of the semi-automatic paper bowl forming machine of the present invention, as follows: Figures 1 to 10 As shown, this semi-automatic paper bowl forming machine is used to produce cylindrical disposable paper bowls. It mainly includes a bowl body forming mechanism and a bowl bottom forming mechanism. During operation, the cut paper bowl pieces 500 are rolled and sealed into a cylindrical bowl body in the bowl body forming mechanism. Then, the bowl body enters the bowl bottom forming mechanism and is assembled with the bowl bottom to form a paper bowl. The improvement of this invention only relates to the bowl body forming mechanism; therefore, only the structure of the bowl body forming mechanism is described here. Other structures of the semi-automatic paper bowl forming machine are not described, and other structures besides the bowl body forming mechanism are not shown in the accompanying drawings.

[0033] In this invention, the bowl forming mechanism includes a base 400, and a paper feeding mechanism 200, a paper winding assembly 201, a heat sealing assembly 303, and a bowl feeding mechanism 300 disposed on the base 400. The paper feeding mechanism 200 includes a paper feeding drum 202, and the bowl feeding mechanism 300 includes a bowl feeding drum 304. The paper feeding drum 202 and the bowl feeding drum 304 are arranged side-by-side, and each is connected to a rotary drive motor. The rotation axes of both the paper feeding drum 202 and the bowl feeding drum 304 extend vertically. In this embodiment, the paper feeding drum 202 is a regular polygonal drum, specifically a regular octagonal drum, and a set of paper winding assemblies 201 are respectively disposed on the outer surface of the paper feeding drum 202. Multiple bowl molds 301 are spaced apart on the outer circumferential surface of the bowl feeding drum 304. The number of bowl molds 301 corresponds one-to-one with the number of paper roll assemblies 201. The axis of the bowl mold 301 extends radially along the bowl feeding drum 304. A heat sealing assembly 303 is movably disposed on one radial side of the bowl mold 301. The heat sealing assembly 303 can extend and retract radially along the bowl mold 301.

[0034] When the bowl forming mechanism of the present invention is in operation, the paper feeding drum 202 and the bowl feeding drum 304 rotate in the same direction, specifically as follows: Figure 2As shown, both the paper feeding drum 202 and the bowl feeding drum 304 rotate clockwise, with the paper feeding drum 202 rotating in the direction of arrow 1 and the bowl feeding drum 304 rotating in the direction of arrow 2. A paper transfer structure (not shown in the figure) is provided on one radial side of the paper feeding drum 202. This structure transfers the cut bowl-shaped paper pieces 500 one by one to each paper roll assembly 201. The paper roll assembly 201 rotates carrying the bowl-shaped paper pieces 500, thereby conveying the bowl-shaped paper pieces 500 towards the bowl feeding mold 301. Along the rotation paths of the paper feeding drum 202 and the bowl feeding drum 304, there is a sealing stroke that allows each paper roll assembly 201 to correspond and press against each bowl mold 301. During the sealing stroke, the paper roll assembly 201 bends the bowl body paper sheet 500 and wraps it around the bowl mold 301. The heat sealing assembly 303 heat-presses the bowl body paper sheet 500. The heat-pressed bowl is then conveyed to the next process by the bowl feeding drum 304. This invention, through the rotation of the bowl feeding drum 304 and the paper feeding drum 202, allows the paper roll assembly 201 to press against the bowl mold 301. This process achieves simultaneous paper feeding, paper rolling, heat sealing, and bowl delivery, thus shortening the time required for bowl forming and improving bowl forming production efficiency to a certain extent.

[0035] In this embodiment, the structure of the paper roll assembly 201 is as follows: Figures 4 to 10 As shown, the paper roll assembly 201 includes a mounting frame 2012, and further includes an upper rotating plate 2015 and a lower rotating plate 2016 symmetrically arranged and swinging on the mounting frame 2012. The mounting frame 2012 is located on the periphery of the paper feeding drum 202, and the swing axes of the upper rotating plate 2015 and the lower rotating plate 2016 extend radially along the paper feeding drum 202. Multiple mounting plates 2021 are evenly spaced on the periphery of the paper feeding drum 202, each mounting plate 2021 corresponding to a paper roll assembly 201. A horizontal screw 2011 is rotatably mounted on the mounting frame 2012 of each paper roll assembly 201, and the horizontal screw 2011 is helically threaded onto the mounting plate 2021. In this embodiment, the mounting bracket 2012 of each paper roll assembly 201 is slidably mounted on the periphery of the paper feeding drum 202 in a horizontal direction. Specifically, guide rails are respectively provided on the side of the paper feeding drum 202, and the mounting bracket 2012 of each paper roll assembly 201 slides and engages with the guide rails on each side of the paper feeding drum 202, thereby realizing the adjustable mounting of the paper roll assembly 201 on the paper feeding drum 202. When it is necessary to adjust the horizontal position of the paper roll assembly 201, the horizontal screw 2011 is rotated, and the horizontal screw 2011 drives the paper roll assembly 201 to move horizontally, thereby adjusting the position of the paper roll assembly 201. In other embodiments, the mounting bracket 2012 can also be fixedly mounted on the periphery of the paper feeding drum 202.

[0036] In this embodiment, the upper rotating plate 2015 is provided with an upper paper-wrapping rod 2018, and the lower rotating plate 2016 is provided with a lower paper-wrapping rod. Initially, the upper rotating plate 2015 and the lower rotating plate 2016 are on the same plane. Figure 4 , Figure 6 In the indicated state, the bowl-shaped paper sheet 500 can be laid on the upper wrapping rod 2018 and the lower wrapping rod. Simultaneously, a paper-pressing rod 2013 is oscillating on the mounting frame 2012. The oscillation axis of the paper-pressing rod 2013 extends vertically, pressing the bowl-shaped paper sheet 500 onto the upper wrapping rod 2018 and the lower wrapping rod. During the sealing stroke, the upper rotating plate 2015 oscillates downwards and the lower rotating plate 2016 oscillates upwards, causing the upper wrapping rod 2018 and the lower wrapping rod to move circumferentially along the bowl mold 301, so that the bowl-shaped paper sheet 500 wraps around the outside of the bowl mold 301. Figure 5 The state shown.

[0037] In this embodiment, the paper roll assembly 201 further includes a linkage system, such as... Figure 6 and Figure 8 As shown, the linkage system includes an upper gear 20201, a lower gear 20202, and a pusher slider 20203. The upper gear 20201 is fixed to the swing axis of the upper rotating plate 2015, and the lower gear 20202 is fixed to the swing axis of the lower rotating plate 2016. The pusher slider 20203 is slidably mounted on the mounting frame 2012 in a direction perpendicular to the swing axis. Specifically, the pusher slider 20203 is provided with a dovetail slider, and the mounting frame 2012 is provided with a dovetail groove (not shown in the figure). The pusher slider 20203 is guided and mounted on the mounting frame 2012 by the dovetail slider. An upper rack 204 that meshes with the upper gear 20201 and a lower rack that meshes with the lower gear 20202 are fixed on the pusher slider 20203. During the sealing stroke, the bowl mold 301 pushes the pusher slider 20203 to drive the upper rotating plate 2015 and the lower rotating plate 2016 to swing.

[0038] In this embodiment, the upper paper-wrapping rod 2018 is slidably disposed on the upper rotating plate 2015 in the vertical direction, and the lower paper-wrapping rod is slidably disposed on the lower rotating plate 2016 in the vertical direction. When the upper rotating plate 2015 swings downward and the lower rotating plate 2016 swings upward at a set angle, the outer periphery of the bowl mold 301 is pressed and engaged with the upper paper-wrapping rod 2018 and the lower paper-wrapping rod, thereby driving the upper paper-wrapping rod 2018 and the lower paper-wrapping rod to move along the upper rotating plate 2015 and the lower rotating plate 2016 respectively, and the upper paper-wrapping rod 2018 and the lower paper-wrapping rod move along the outer periphery of the bowl mold 301.

[0039] In this embodiment, the upper end of the upper rotating plate 2015 and the lower end of the lower rotating plate 2016 are respectively provided with sliding grooves 2017, and one end of the upper paper-wrapping rod 2018 and the lower paper-wrapping rod are slidably installed in the two sliding grooves 2017 respectively. An upper telescopic rod 2019 is movably arranged on the upper rotating plate 2015, one end of the upper telescopic rod 2019 extends into the sliding groove 2017 of the upper rotating plate 2015 and is fixedly connected to the upper paper-wrapping rod 2018, and an upper support spring 2020 is sleeved around the upper telescopic rod 2019. A lower telescopic rod is movably arranged on the lower rotating plate 2016. One end of the lower telescopic rod extends into the slide groove 2017 of the lower rotating plate 2016 and is fixedly connected to the lower paper wrapping rod. A lower support spring is sleeved around the lower telescopic rod. After the upper paper wrapping rod 2018 and the lower paper wrapping rod are separated from the bowl mold 301, the upper support spring 2020 and the lower support spring drive the upper paper wrapping rod 2018 and the lower paper wrapping rod to reset.

[0040] In this embodiment, a return spring 20205 is provided between the push slider 20203 and the mounting bracket 2012. When the push slider 20203 disengages from the bowl mold 301, the return spring 20205 drives the push slider 20203 to return to its original position, so that the upper rotating plate 2015 and the lower rotating plate 2016 return to their original positions and form a plane. A guide rod 20206 is fixed on the push slider 20203. One end of the guide rod 20206 is movably mounted on the mounting bracket 2012. The return spring 20205 is sleeved around the guide rod 20206, and both ends of the return spring 20205 are connected to the push slider 20203 and the mounting bracket 2012, respectively.

[0041] In this embodiment, a central rod 2014 extending radially along the paper feeding drum 202 is provided between the upper paper-wrapping rod 2018 and the lower paper-wrapping rod. The central rod 2014 is supported and engaged with the middle of the bowl-shaped paper sheet 500. When the bowl-shaped mold 301 pushes the push slider 20203, the central rod 2014 and the push slider 20203 move together in a direction perpendicular to the central rod 2014. One end of the central rod 2014 is hinged to the push slider 20203. Specifically, a hinge seat 203 is fixed on the push slider 20203, and one end of the central rod 2014 is connected to the hinge seat 203. The hinge axis of the central rod 2014 extends in the vertical direction. When the push slider 20203 disengages from the bowl-shaped mold 301, the bowl-shaped mold 301 pushes the central rod 2014 to swing, and the central rod 2014 avoids the bowl-shaped mold 301. A reset spring 20204 is provided on one side of the central rod 2014. One end of the reset spring 20204 is fixedly connected to the push slider 20203. When the bowl mold 301 is separated from the central rod 2014, the reset spring 20204 drives the central rod 2014 to reset. In this embodiment, a fixed platform 302 corresponding to the bowl mold 301 is provided on the outer wall of the bowl feeding cylinder 304. The bowl mold 301 is fixed on the fixed platform 302. The bowl mold 301 and the fixed platform 302 form a step for limiting the position of the bowl. The step is used to stop and cooperate with one end of the bowl.

[0042] In another embodiment of the semi-automatic paper bowl forming machine of the present invention, the difference from the first embodiment is that, in order to prevent the two ends of the bowl body paper sheet 500 from detaching from the upper rotating plate 2015 and the lower rotating plate 2016 during the bending of the bowl body paper sheet 500, paper-stopping rods are respectively connected to the upper paper-wrapping rod 2018 and the lower paper-wrapping rod.

[0043] In operation, the semi-automatic paper bowl forming machine of this invention features a paper feeding drum 202 rotating in the direction of arrow 1 and a bowl feeding drum 304 rotating in the direction of arrow 2. The paper winding assembly 201 on the paper feeding drum 202 passes sequentially through a paper conveying structure located on one side. The paper conveying structure conveys the cut bowl-shaped paper pieces 500 one by one to each passing paper winding assembly 201. The paper pressing rod 2013 presses the bowl-shaped paper pieces 500 onto the upper paper wrapping rod 2018, the center rod 2014, and the lower paper wrapping rod. As each paper winding assembly 201 on the paper feeding drum 202 and each bowl mold 301 on the bowl feeding drum 304 passes through the gap between the two drums, the paper winding assembly 201 on the paper feeding drum 202 and the bowl mold 301 on the bowl feeding drum 304 gradually approach each other. When the paper winding assembly 201 contacts the bowl mold 301, as... Figure 2As shown, the paper roll assembly 201 and the bowl mold 301 begin to enter the sealing stroke. Then, the paper pressing rod 2013 swings and leaves the bowl paper sheet 500. As the paper feeding drum 202 and the bowl feeding drum 304 continue to rotate, the bowl mold 301 presses the push slider 20203 of the paper roll assembly 201, causing the push slider 20203 to move in a direction perpendicular to the central rod 2014. Since the upper rack 204 and the lower rack on the push slider 20203 mesh with the upper gear 20201 and the lower gear 20202 respectively, the movement of the push slider 20203 will drive the upper gear 20201 and the lower gear 20202 to rotate, thereby causing the upper rotating plate 2015 to swing downward and the lower rotating plate 2016 to swing upward. The swinging of the upper rotating plate 2015 and the lower rotating plate 2016 will drive the upper wrapping rod 2018 and the lower wrapping rod to move synchronously. The upper wrapping rod 2018 and the lower wrapping rod will cause the bowl body paper 500 to bend and gradually wrap around the outside of the bowl body mold 301. After the upper rotating plate 2015 and the lower rotating plate 2016 swing to a set angle, the upper wrapping rod 2018 and the lower wrapping rod press against the outer periphery of the bowl mold 301. Then, as the bowl mold 301 continues to press and push the sliding block 20203 to move, the upper rotating plate 2015 and the lower rotating plate 2016 continue to swing, causing the bowl mold 301 to press the upper wrapping rod 2018 and the lower wrapping rod, causing the upper wrapping rod 2018 and the lower wrapping rod to slide relative to the upper rotating plate 2015 and the lower rotating plate, respectively. That is, the upper wrapping rod 2018 and the lower wrapping rod slide in the grooves 2017 of the upper rotating plate 2015 and the lower rotating plate 2016, respectively. The upper wrapping rod 2018 and the lower wrapping rod move along the outer periphery of the bowl mold 301 and move closer to each other. In this way, the upper wrapping rod 2018 and the lower wrapping rod completely wrap the bowl paper sheet 500 on the bowl mold 301. Then, before the bowl mold 301 disengages from the push slider 20203, the heat sealing assembly 303 moves radially inward along the bowl mold 301, pressing the two ends of the bowl paper sheet 500 together to form a cylindrical bowl. As the paper feeding drum 202 and the bowl feeding drum 304 continue to rotate, the bowl mold 301 disengages from the push slider 20203, and then the bowl mold 301 begins to push the center rod 2014. The center rod 2014 swings and avoids the bowl mold 301. At the same time, under the action of the return spring 20205, the upper rotating plate 2015 and the lower rotating plate 2016 swing in opposite directions to form a plane. When the paper winding assembly 201 passes through the paper conveying structure again, the new bowl paper sheet 500 is laid on the upper paper wrapping rod 2018 and the lower paper wrapping rod, and then participates in the next round of paper winding process.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A semi-automatic paper bowl forming machine, comprising a bowl forming mechanism, wherein the bowl forming mechanism includes a paper feeding mechanism (200), a paper roll assembly (201), a heat sealing assembly (303), and a bowl feeding mechanism (300), characterized in that: The paper feeding mechanism (200) includes a paper feeding drum (202), and the bowl feeding mechanism (300) includes a bowl feeding drum (304). The paper feeding drum (202) and the bowl feeding drum (304) are arranged side by side, and their rotation axes extend vertically. Multiple sets of paper roll assemblies (201) are spaced apart on the outer periphery of the paper feeding drum (202). Multiple bowl molds (301) with axes extending radially along the bowl feeding drum (304) are spaced apart on the outer periphery of the bowl feeding drum (304). A heat sealing assembly (304) is provided on one radial side of each bowl mold (304). 3) During operation, the paper roll assembly (201) is provided with a bowl-shaped paper sheet (500). The paper feeding drum (202) and the bowl feeding drum (304) rotate in the same direction. Along the rotation path of the paper feeding drum (202) and the bowl feeding drum (304), there is a sealing stroke that allows each paper roll assembly (201) to correspond and press against each bowl mold (301). During the sealing stroke, the paper roll assembly (201) bends the bowl-shaped paper sheet (500) and wraps it around the bowl mold (301). The heat sealing assembly (303) heat-presses the bowl-shaped paper sheet (500). The paper roll assembly (201) includes a mounting frame (2012), and also includes an upper rotating plate (2015) and a lower rotating plate (2016) symmetrically arranged and swinging on the mounting frame (2012). The mounting frame (2012) is located around the paper feeding drum (202). The swing axes of the upper rotating plate (2015) and the lower rotating plate (2016) extend radially along the paper feeding drum (202). The upper rotating plate (2015) is provided with an upper paper wrapping rod (2018), and the lower rotating plate (2016) is provided with a lower paper wrapping rod. In the initial state, the upper rotating plate (2015) and the lower rotating plate (2016) are symmetrically arranged and swinging on the mounting frame (2012). 016) is in a plane, and the bowl-shaped paper piece (500) can be laid on the upper paper-wrapping rod (2018) and the lower paper-wrapping rod. The mounting frame (2012) is equipped with a paper-pressing rod (2013), which presses the bowl-shaped paper piece (500) onto the upper paper-wrapping rod (2018) and the lower paper-wrapping rod. During the sealing stroke, the upper rotating plate (2015) swings downward and the lower rotating plate (2016) swings upward, driving the upper paper-wrapping rod (2018) and the lower paper-wrapping rod to move along the circumference of the bowl mold (301), so that the bowl-shaped paper piece (500) is wrapped around the outside of the bowl mold (301).

2. The semi-automatic paper bowl forming machine according to claim 1, characterized in that: The paper roll assembly (201) also includes a linkage system, which includes an upper gear (20201), a lower gear (20202), and a pusher slider (20203). The upper gear (20201) is fixed to the swing shaft of the upper rotating plate (2015), and the lower gear (20202) is fixed to the swing shaft of the lower rotating plate (2016). The pusher slider (20203) is slidably mounted on the mounting frame (2012) in a direction perpendicular to the swing shaft. The pusher slider (20203) is fixed with an upper rack (204) meshing with the upper gear (20201) and a lower rack meshing with the lower gear (20202). During the sealing stroke, the bowl mold (301) pushes the pusher slider (20203) to move, thereby driving the upper rotating plate (2015) and the lower rotating plate (2016) to swing.

3. The semi-automatic paper bowl forming machine according to claim 2, characterized in that: A return spring (20205) is provided between the push slider (20203) and the mounting bracket (2012). When the push slider (20203) is disengaged from the bowl mold (301), the return spring (20205) drives the push slider (20203) to reset, so that the upper rotating plate (2015) and the lower rotating plate (2016) are reset and form a plane.

4. The semi-automatic paper bowl forming machine according to claim 3, characterized in that: A guide rod (20206) is fixed on the push slider (20203). One end of the guide rod (20206) is movably mounted on the mounting frame (2012). The return spring (20205) is sleeved around the guide rod (20206). The two ends of the return spring (20205) are respectively connected to the push slider (20203) and the mounting frame (2012).

5. The semi-automatic paper bowl forming machine according to claim 4, characterized in that: A central rod (2014) extending radially along the paper feeding drum (202) is provided between the upper paper wrapping rod (2018) and the lower paper wrapping rod. The central rod (2014) is supported and cooperates with the middle of the bowl-shaped paper sheet (500). When the bowl mold (301) pushes the push slider (20203), the central rod (2014) and the push slider (20203) move together in a direction perpendicular to the central rod (2014). One end of the central rod (2014) is hinged to the push slider (20203), and the hinge axis extends in the vertical direction. When the push slider (20203) disengages from the bowl mold (301), the bowl mold (301) pushes the central rod (2014) to swing, and the central rod (2014) avoids the bowl mold (301).

6. The semi-automatic paper bowl forming machine according to claim 5, characterized in that: A reset spring (20204) is provided on one side of the central rod (2014). One end of the reset spring (20204) is fixedly connected to the push slider (20203). When the bowl mold (301) is separated from the central rod (2014), the reset spring (20204) drives the central rod (2014) to reset.

7. The semi-automatic paper bowl forming machine according to claim 1, characterized in that: The upper paper-wrapping rod (2018) is slidably mounted on the upper rotating plate (2015) in the vertical direction, and the lower paper-wrapping rod is slidably mounted on the lower rotating plate (2016) in the vertical direction. When the upper rotating plate (2015) swings downward and the lower rotating plate (2016) swings upward at a set angle, the outer periphery of the bowl mold (301) is pressed and engaged with the upper paper-wrapping rod (2018) and the lower paper-wrapping rod to drive the upper paper-wrapping rod (2018) and the lower paper-wrapping rod to move along the upper rotating plate (2015) and the lower rotating plate (2016) respectively. The upper paper-wrapping rod (2018) and the lower paper-wrapping rod move along the outer periphery of the bowl mold (301).

8. The semi-automatic paper bowl forming machine according to claim 7, characterized in that: The upper end of the upper rotating plate (2015) and the lower end of the lower rotating plate (2016) are respectively provided with sliding grooves (2017). One end of the upper paper-wrapping rod (2018) and the lower paper-wrapping rod are slidably installed in the two sliding grooves (2017). An upper telescopic rod (2019) is movably arranged on the upper rotating plate (2015). One end of the upper telescopic rod (2019) extends into the sliding groove (2017) of the upper rotating plate (2015) and is fixedly connected to the upper paper-wrapping rod (2018). The upper telescopic rod (2019) is movably arranged in the two sliding grooves (2017). An upper support spring (2020) is sleeved around the outer edge of the lower rotating plate (2016). A lower telescopic rod is movably arranged on the lower rotating plate (2016). One end of the lower telescopic rod extends into the slide groove (2017) of the lower rotating plate (2016) and is fixedly connected to the lower paper wrapping rod. A lower support spring is sleeved around the outer edge of the lower telescopic rod. After the upper paper wrapping rod (2018) and the lower paper wrapping rod are separated from the bowl mold (301), the upper support spring (2020) and the lower support spring drive the upper paper wrapping rod (2018) and the lower paper wrapping rod to reset.

9. The semi-automatic paper bowl forming machine according to any one of claims 1-8, characterized in that: The paper feeding drum (202) is provided with multiple mounting plates (2021) at intervals around its periphery. Each mounting plate (2021) corresponds to a paper roll assembly (201). Each paper roll assembly (201) has a mounting frame (2012) with a horizontal screw (2011) which is spirally mounted on the mounting plate (2021). The paper feeding drum (202) is a regular polygonal tube. Each side of the regular polygonal tube is provided with a guide rail. Each mounting frame (2012) of the paper roll assembly (201) slides in cooperation with each guide rail on each side.

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