A paper handle forming device

Abstract

The paper handle forming device comprises a former and a shaper; the former comprises a forming nozzle, and a guide structure is arranged on the side of the forming nozzle away from the shaper; the forming nozzle comprises a base part, and guide eaves are arranged on the two sides of the base part respectively, one of the guide eaves is outside the other guide eave, and a lap joint structure is formed between the two guide eaves; the guide structure comprises an arc-shaped guide plate, inner collection eaves are arranged on the two sides of the guide plate in the width direction respectively, the spacing between the two inner collection eaves is gradually reduced, each inner collection eave is connected with the corresponding guide eave, so that the inner collection eave and the guide eave form a continuous guide groove inside, and a wire tube is arranged on the upper surface of the guide plate and close to the two inner collection eaves. In the paper handle forming device, the former can form the paper strip into a structure with the two sides folded, and two paper ropes are covered in the structure, the shaper can further shape the product, and the produced handle product has high strength and good tensile capacity.

Description

Technical Field

[0001] This invention belongs to the technical field of packaging product manufacturing equipment, and in particular relates to a paper handle forming device. Background Technology

[0002] Traditional cardboard box or paper bag handles are mostly made of plastic, but plastic handles have drawbacks such as high cost, environmental unfriendliness, and difficulty in recycling. Furthermore, recycling requires separation from the cardboard box, which is complex and costly. Existing technologies using paper strips directly as handles suffer from low strength and susceptibility to breakage, while paper rope handles are uncomfortable and uncomfortable to hold. Therefore, the inventors combined the structures of paper strips and paper ropes to design a handle that is both comfortable to use and strong enough to withstand breakage. They also improved existing production equipment to ensure smooth production of this type of paper handle. Summary of the Invention

[0003] The problem to be solved by this invention is to overcome the defects existing in the prior art and to propose a paper handle forming device.

[0004] To solve the above-mentioned technical problems, the technical solution created by this invention is implemented as follows:

[0005] A paper handle forming device includes a forming device fixed to a mounting base, and a shaping device provided on one side corresponding to the outlet of the forming device; the forming device includes a forming nozzle in the shape of "Б", and a guide structure is provided on the side of the forming nozzle away from the shaping device;

[0006] The forming nozzle includes a base part, and guide eaves are provided on both sides of the base part, with one guide eaves located outside the other guide eaves, and the two forming an overlapping structure;

[0007] The guide structure includes an arc-shaped guide plate with inner eaves on both sides in the width direction of the guide plate. The distance between the two inner eaves gradually decreases, and each inner eave connects with its corresponding guide eave, so that the inner eave and the guide eave form a continuous guide groove.

[0008] A guide tube is arranged on the upper surface of the guide plate near the two inner eaves;

[0009] The shaping device includes a base and a pressure block installed on the upper side of the base. A forming groove is provided on the base corresponding to the outlet of the shaping device, and a lower guide groove communicating with the forming groove is provided on the base. The lower guide groove is located on the side of the forming groove closer to the shaping device. An upper guide groove is provided on the pressure block corresponding to the lower guide groove.

[0010] Both the upper guide groove and the lower guide groove are provided with guide arc surfaces.

[0011] Furthermore, the guide structure is integrally molded with the forming nozzle.

[0012] Furthermore, the mounting base includes a base plate and two limiting plates on the base plate. The guide plate of the forming device is welded and fixed to the limiting plates on both sides. The base plate is symmetrically provided with connecting holes. The mounting base is fixed to the mounting base by screws passing through the connecting holes.

[0013] Furthermore, the pressure block is fixed to the base by screws.

[0014] Furthermore, the lower end face of the pressure block is provided with several positioning protrusions, and the upper end face of the base is provided with a groove that cooperates with the positioning protrusions.

[0015] Furthermore, the positioning protrusion is hemispherical, and the groove is a spherical surface that matches the hemispherical positioning protrusion.

[0016] Furthermore, the guide tube extends from one side of the guide structure to the discharge port of the forming nozzle.

[0017] Furthermore, the two conduits are arranged in parallel.

[0018] Furthermore, one connecting hole is arranged on each side of the forming groove.

[0019] The advantages and positive effects of this invention are:

[0020] This invention features a rationally designed structure. The forming device can shape the paper strip into a folded-over structure, enclosing two paper ropes within it. The shaping device can further shape the product, resulting in a handle with high strength and tensile strength. It also effectively solves the problem of paper handles being prone to side breakage, and offers high comfort for use. It can be used to lift heavy objects. Due to its high structural stability, the handle is not easily damaged even when subjected to lateral torsional forces. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure created by the present invention;

[0022] Figure 2 This is a schematic diagram of the mounting base in this invention;

[0023] Figure 3 This is a schematic diagram of the molding device being installed on the mounting base in this invention.

[0024] Figure 4 This is a schematic diagram of the base of the shaping device in this invention;

[0025] Figure 5 This is a schematic diagram of the pressing block of the shaping device in this invention;

[0026] Figure 6This is a schematic diagram of the application state of the present invention;

[0027] Figure 7 yes Figure 6 A schematic diagram after removing the shaping tool block;

[0028] Figure 8 This is a schematic diagram of the cross-section of the forming nozzle portion in this invention.

[0029] Figure 9 This is a schematic diagram of the shaping device created in this invention;

[0030] Figure 10 This is a schematic diagram of the invention when it is equipped with a heating and pressurizing chamber and a cooler;

[0031] Figure 11 yes Figure 10 Top view of the forming and shaping parts;

[0032] Figure 12 This is a schematic diagram of the invention when a stabilizing mechanism is provided;

[0033] Figure 13 This is a schematic diagram of the conduit portion in this invention;

[0034] Figure 14 This is a schematic diagram of the invention when it is equipped with an electromagnetic heating device.

[0035] Figure 15 This is a schematic diagram of the present invention when a guiding mechanism is provided;

[0036] Figure 16 This is a schematic diagram of the molding apparatus of the present invention with a guiding mechanism;

[0037] Figure 17 It is a simulation of paper tape threading and Figure 16 A schematic diagram of the production status of the central guiding mechanism;

[0038] Figure 18 This is a schematic diagram of the guiding mechanism in an embodiment of the present invention. Detailed Implementation

[0039] It should be noted that, without conflict, the embodiments and features in the embodiments of this invention can be combined with each other.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. 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. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The specific embodiments of the present invention will be described in detail below.

[0043] A paper handle forming device, such as Figures 1 to 14 As shown, it includes a molding device 2 fixed to the mounting base 1, and a shaping device 3 is provided on one side corresponding to the molding device outlet; the molding device includes a molding nozzle 4 with a "Б" shaped cross section, and a guide structure 5 is provided on the side of the molding nozzle away from the shaping device.

[0044] The forming nozzle includes a base part 6, and guide eaves 7 are provided on both sides of the base part, with one guide eave located outside the other guide eave, and the two forming an overlapping structure;

[0045] The guide structure includes an arc-shaped guide plate 8, with inner eaves 9 on both sides of the guide plate in the width direction, and the distance between the two inner eaves gradually decreases. Each inner eave is connected to its corresponding guide eave, so that the inner eaves and the guide eaves form a continuous guide groove.

[0046] On the upper surface of the guide plate, near the two inner eaves, a guide tube 10 is arranged. The guide tube can be welded and fixed to the outer edge of the inner eaves or to the outer edge of the guide eaves, as long as it does not obstruct the passage of the paper tape. Usually, the two guide tubes are arranged in parallel. Preferably, the guide tube extends from one side of the guide structure to the discharge port 39 of the forming nozzle, ensuring that the paper rope is stably arranged in the paper tape, forming a structurally stable handle.

[0047] The shaping device includes a base 11 and a pressure block 12 mounted on the upper side of the base. A forming groove 13 is provided on the base corresponding to the outlet of the shaping device, and a lower guide groove 14 communicating with the forming groove is provided on the base. The lower guide groove is located on the side of the forming groove closer to the shaping device. The pressure block is provided with an upper guide groove 15 corresponding to the lower guide groove. Typically, the pressure block is fixed to the base by screws 31. The height of the forming groove is slightly greater than the thickness of the handle by 0.5-1mm, which ensures that the handle product can pass smoothly to complete the shaping and achieves a better shaping effect.

[0048] In an optional embodiment, the aforementioned guide structure is integrally formed with the forming nozzle. The guide plate of the guide structure is connected to the base of the forming nozzle, and the inner edge is connected to the guide edge, with a smooth transition on the surface. This results in low resistance and smooth passage of the paper tape through the forming device. Both the upper and lower guide grooves are provided with guide arc surfaces 16, meaning that the bottom surfaces of both the upper and lower guide grooves are arc-shaped. This facilitates the smooth entry of the paper tape into the shaping device for further shaping after it has been formed by the forming device. It should be noted that when the shaping device is installed, the forming groove can be slightly lower than the outlet of the forming nozzle. For example, the forming groove can be 2-5mm lower than the outlet of the forming nozzle. This structural design allows the handle formed by the forming device to undergo preliminary shaping at the guide groove during its entry into the shaping device. The handle body is pre-pressed by the pressure block, resulting in a flatter and more solid shape and better forming effect.

[0049] The aforementioned mounting base includes a base plate 17 and two limiting plates 18 on the base plate. The guide plate of the forming device is welded and fixed to the limiting plates on both sides. Connecting holes 19 are symmetrically provided on the base plate. For example, one connecting hole is arranged on each side of the forming groove. The mounting base is fixed to the base structure by screws passing through the connecting holes.

[0050] The lower end face of the aforementioned pressure block is provided with several positioning protrusions, and the upper end face of the base is provided with grooves 20 that mate with the positioning protrusions. For example, the positioning protrusions are hemispherical; however, those skilled in the art can design other shapes as needed, as long as the groove matches the positioning protrusion. The groove is a spherical surface that matches the hemispherical positioning protrusion, facilitating alignment when the pressure block is installed on the base, ensuring easy assembly between the pressure block and the base, and guaranteeing precise fit.

[0051] When using this forming device to make paper handles, a paper strip 25 roll is installed on a paper strip shaft 26, and a line shaft 27 is arranged on both sides of the paper strip shaft. A rolled paper rope 28 is installed on the line shaft. Then, one end of the paper strip is passed through the shaping device, and a paper rope is passed through each guide tube. The two sides of the paper strip gradually shrink to the forming nozzle through two inner rims. The paper rope is pressed inside the paper strip, initially forming the handle body 30 structure. The end passing through the shaping device is pulled by the winding drum 29, and the finished product can be directly wound up. The handle body is pulled by the winding drum, and the paper strip and paper rope will continue to enter the forming device.

[0052] Of course, in actual production, this forming device is used in conjunction with a heating and pressurizing chamber and a cooler. Specifically, a hot melt adhesive film can be coated on the inside of the paper strip. The handle body, after exiting the shaping unit, can pass through the heating and pressurizing chamber 21 to melt the hot melt adhesive film, thereby causing the two sides of the paper strip in the overlapping structure to adhere together. Afterwards, it is cooled and shaped by the cooler 22. It should be noted that the heating and pressurizing chamber is equipped with several pressure rollers 23. The heated handle body is pressed repeatedly by each pressure roller, resulting in high bonding strength. The cooler can be water-cooled or other cooling methods to quickly solidify the hot melt adhesive inside the handle and shape the product. For easy statistics, a counter 24 can be arranged between the heating and pressurizing chamber and the cooler. In another feasible solution, this forming device is used in conjunction with an electromagnetic heating device 33, that is, the electromagnetic heating device, which has higher heating efficiency, is used to heat and shape the initially formed handle body product, resulting in higher production efficiency. In specific implementation, the handle body product is guided by guide wheels 32 before the electromagnetic heating device.

[0053] In an optional embodiment, such as Figure 12 As shown, a stabilizing mechanism is provided before the feed inlet 40 of the forming device. The stabilizing mechanism includes a stabilizing frame 34 and a stabilizing block 35 on the stabilizing frame. The stabilizing block is fixed to the stabilizing frame by connecting screws 36. Two through holes are opened on the stabilizing block, and the aforementioned wire tubes pass through the corresponding through holes and are fixed by clamping screws 37 on the stabilizing block. After the clamping screws are tightened, they press down on the wire tubes to prevent them from shifting, thus ensuring good stability. In addition, the stabilizing frame can be installed on a mounting base or arranged on other structural foundations, as long as it corresponds to the feed inlet of the forming device and ensures that the structure is reliable. As a further improvement, a guide section 38 is provided at the end of the wire tube away from the stabilizing mechanism, which is inclined towards the junction of the guide eaves and the base. Typically, the guide section forms an angle of 5-20° with the center line of the forming device, so that the outlet 41 at the end of the guide section faces the surface of the guide eaves. This ensures that the paper rope can be stably arranged at the junction of the guide eaves and the base, making the side paper rope position accurate and ensuring the reliable performance of the produced handle, meeting the design requirements.

[0054] To improve the stability of the paper tape entering the forming machine during the handle manufacturing process, in an optional embodiment, such as Figures 15 to 17 As shown, a guiding mechanism 42 is provided on the mounting base or under the guide plate. Specifically, the guiding mechanism includes a wave-shaped guide frame extending in the material feeding direction. This guide frame is made of spring steel wire or stainless steel wire, forming a central support rod 44 and two side limiting parts 45. During the process of the paper tape entering the forming device, the free end of the guide frame is designed as a horizontal support rod 43. This horizontal support rod is perpendicular to the paper tape movement direction, so that the paper tape can initially achieve a flat posture upon entering the guide frame, ensuring high stability of the paper tape during the feeding process. Figure 17 The simulated paper tape shown is arranged in the guide frame. When the paper tape enters the guide frame, it is first flattened by the cross brace, then gradually straightened by each support rod, and finally aligned by the limiting part, which effectively restricts displacement and prevents it from moving around during production.

[0055] Thanks to the design of the guide frame, the paper tape is no longer limited by installation height and orientation, nor by the amount of paper tape remaining on the roller (with the paper tape wound on it). The paper tape feeding process is stable, and changing the paper tape material is easy, requiring no precise alignment, only secure installation, saving time and effort. Furthermore, it should be noted that even if there are fluctuations during the paper tape feeding process, the guide frame itself can deform and recover after deformation. Therefore, even if the paper tape fluctuates, the guide frame (in whole or in part) will adapt to the movement of the paper tape, providing effective cushioning and preventing the paper tape from being cut by the forming machine's inlet. The paper tape remains intact from feeding to the finished handle, ensuring handle quality, high yield, and good quality stability.

[0056] It should be emphasized that, since the guide frame is composed of multiple support rods, with limiting sections between adjacent support rods, the guide frame is essentially a multi-stage functional segment 46 with guiding and buffering characteristics, such as... Figure 18 As shown, the dotted line marks a "functional segment". When the guide frame undergoes adaptive deformation, the deformation amplitude of the "functional segment" at its end (the end near the cross brace) is greater than that of the end near the forming device, and the deformation magnitude is a gradual curve. Therefore, the guide mechanism designed for the paper tape feeding process in this application has better buffering performance and stability than conventional buffers.

[0057] This invention features a rationally designed structure. The forming device can shape the paper strip into a folded-over structure, enclosing two paper ropes within it. The shaping device can further shape the product, resulting in a handle with high strength and tensile strength. It also effectively solves the problem of paper handles being prone to side breakage, and offers high comfort for use. It can be used to lift heavy objects. Due to its high structural stability, the handle is not easily damaged even when subjected to lateral torsional forces.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0059] Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper handle forming apparatus characterized by: The forming device is fixed to the mounting base, and a shaper is arranged on the side corresponding to the outlet of the forming device; the forming device comprises a forming nozzle in the shape of "Б", and a guide structure is arranged on the side of the forming nozzle away from the shaper; The forming nozzle comprises a base part, and a guide eave is arranged on each side of the base part, one of the guide eaves being outside the other guide eave to form a lap structure therebetween; The guide structure comprises an arc-shaped guide plate, and an inwardly tapered eave is arranged on each side of the guide plate in the width direction, and the distance between the two inwardly tapered eaves gradually decreases, and each inwardly tapered eave is connected to the corresponding guide eave, so that the inwardly tapered eaves and the guide eaves form a continuous guide groove inside; A wire tube is arranged on the upper surface of the guide plate near the two inwardly tapered eaves; The shaper comprises a base and a pressing block mounted on the upper side of the base, a forming groove is arranged on the base corresponding to the outlet of the forming device, and a lower guide groove is arranged on the base and communicates with the forming groove, the lower guide groove being arranged on the side of the forming groove close to the shaper, and an upper guide groove is arranged on the pressing block corresponding to the lower guide groove; The upper guide groove and the lower guide groove are both provided with a guide arc surface.

2. A paper handle forming apparatus according to claim 1, wherein: The guide structure is integrally formed with the forming nozzle.

3. A paper handle forming apparatus as defined in claim 1, wherein: The mounting base comprises a base plate and two limiting plates on the base plate, the guide plate of the forming device is welded to the limiting plates on both sides, and connecting holes are symmetrically arranged on the base plate.

4. A paper handle forming apparatus as defined in claim 1, wherein: The pressing block is fixed to the base by screws.

5. A paper handle forming apparatus as defined in claim 1, wherein: A plurality of positioning protrusions are arranged on the lower end surface of the pressing block, and grooves matched with the positioning protrusions are arranged on the upper end surface of the base.

6. A paper handle forming apparatus as claimed in claim 5, wherein: The positioning protrusions are in the shape of a hemisphere.

7. A paper handle forming apparatus as defined in claim 1 wherein: The wire tubes extend from the side of the guide structure to the outlet of the forming nozzle.

8. A paper handle forming apparatus as defined in claim 1 wherein: The two wire tubes are arranged in parallel.

9. A paper handle forming apparatus as defined in claim 3 wherein: One connecting hole is arranged on each side of the forming groove.

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