Paper roll packaging machine capable of preventing packaging film pattern dislocation
By incorporating vents and edge-gathering plates into the clamping components of the paper roll packaging machine, the problem of airflow impact caused by air bursting inside the packaging film is solved, preventing pattern misalignment and improving packaging quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-03-20
AI Technical Summary
During the sealing process of existing paper roll packaging machines, the air inside the packaging film bursts, causing airflow impact and resulting in axial displacement of the paper roll. This leads to misalignment of the packaging film pattern and affects packaging quality.
A gap is set in the clamping component that does not heat-melt the packaging film, forming an air vent. The design of the edge-sealing plate allows the packaging film to gradually adhere to the end face of the paper roll during bending. The air vent is used to expel the air inside the packaging film and prevent airflow impact.
This effectively prevents the packaging film pattern from becoming misaligned due to axial displacement of the paper roll, thus improving packaging quality.
Smart Images
Figure CN224013967U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to packing equipment especially paper roll packing machine which seals and shapes the end face of the packing film of the paper roll. BACKGROUND
[0002] The action process of the paper roll packing machine which seals and shapes the end face of the packing film of the paper roll is that the opening end of the packing film which protrudes from the end of the paper roll is first clamped and closed by the pressing part, the sealing end of the packing film which protrudes from the end of the paper roll is formed, then the packing film which protrudes from the end of the paper roll is bent and converged by the edge collecting plate and is attached to the end face of the paper roll, and the packing film which is attached to the end face of the paper roll is heat sealed and shaped by the heating plate.
[0003] The sealing end of the packing film which is formed by the pressing part of the existing paper roll packing machine is completely sealed, and the packing film which is sealed by the pressing part encloses a closed space which is not permeable to air. The volume of the closed space is reduced in the process that the packing film which protrudes from the end of the paper roll is bent and converged by the edge collecting plate and is attached to the end face of the paper roll. If the volume is reduced too much, the air which is wrapped in the packing film will burst the packing film and produce air flow impact. The paper roll which is wrapped in the packing film will be axially displaced by the air flow impact, which causes the pattern on the packing film to be dislocated relative to the position of the paper roll, for example, the pattern of the packing film which should cover the circumferential surface of the paper roll is deviated to the end face of the paper roll, which finally affects the packaging quality of the paper roll product. SUMMARY
[0004] The utility model aims at overcoming the defects of the prior art and providing a paper roll packing machine which prevents the pattern of the packing film from being dislocated.
[0005] The utility model is implemented in the following way: the paper roll packing machine which prevents the pattern of the packing film from being dislocated comprises a pressing part which clamps and closes the opening end of the packing film which protrudes from the end of the paper roll to form the sealing end of the packing film, an edge collecting plate which bends and converges the packing film which protrudes from the end of the paper roll and attaches the packing film to the end face of the paper roll, and a heating plate which heat seals and shapes the packing film which is attached to the end face of the paper roll. In particular, the pressing part is provided with a vacant part which has no heat sealing effect on the packing film, so that the sealing end of the packing film which is formed by the pressing part clamping and closing the packing film has an air vent.
[0006] As the best implementation, the vacant part is located at the part of the pressing part which deviates from the center of the paper roll as viewed from the end face of the paper roll; the plate surface of the edge collecting plate is close to the end face of the paper roll which is rolling, and the edge collecting plate is divided into two blocks which are separated as viewed from the end face of the paper roll, and the interval between the two blocks of the edge collecting plate gradually approaches the center of the paper roll from large to small along the direction in which the paper roll rolls.
[0007] The paper roll packaging machine has the advantages that the air wrapped in the packaging film can be discharged from the air vent in the process of bending and converging the packaging film to the end surface of the paper roll by the edge closing plate, air flow impact caused by air extrusion of the packaging film is avoided, axial displacement of the paper roll caused by air flow impact is avoided, the pattern on the packaging film is prevented from being dislocated due to the axial displacement of the paper roll, and the packaging quality is improved. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 is a structure diagram of the clamping and pressing piece in the paper roll packaging machine according to the utility model, and the clamping and pressing piece in the drawing is in a closed state;
[0009] Figure 2 is a structure diagram of the edge closing plate in the paper roll packaging machine according to the utility model, and the edge closing plate is drawn in a transparent state so as to show the packaging film on the end surface of the paper roll;
[0010] Figure 3 is Figure 2 a plan view;
[0011] Figure 4 is a structure diagram of the heating plate in the paper roll packaging machine according to the utility model, and the heating plate is drawn in a transparent state so as to show the packaging film on the end surface of the paper roll;
[0012] Figure 5 is Figure 4 a plan view;
[0013] Figure 6 is Figure 1 a left view of the clamping and pressing piece and the right paper roll in
[0014] Figure 7 is Figure 6 a schematic diagram of the clamping and pressing piece after being opened;
[0015] Figure 8 is a schematic diagram of one embodiment of driving the paper roll to roll in Figure 2 , and the edge closing plate in Figure 2 is omitted in the drawing. DETAILED DESCRIPTION
[0016] In order to make the utility model understood better, the utility model is described more comprehensively through embodiments below. The embodiments give the implementation manners of the utility model. However, the utility model can be realized in many different forms and is not limited to the implementation manners described in the embodiments.
[0017] The paper roll packaging machine according to the utility model comprises Figure 1 the clamping and pressing piece 1 shown in Figure 2 the edge closing plate 2 shown in Figure 4The heat plate 3 is shown. When the clamp 1 is closed as shown Figure 1 , the clamp 1 will clamp the open end of the wrapping film 4 protruding from the end of the paper roll 8 with heat, forming a sealed end of the wrapping film. The present embodiment is provided with a cutter 5 inside the clamp 1, which will cut the wrapping film when the clamp 1 is closed. After the sealed end of the wrapping film is formed, the wrapping film 4 protruding from the end of the paper roll 8 will be bent and converged onto the end face of the paper roll 8 by the edge plate 2 as shown Figure 2 , and Figure 3 , and then the wrapping film converged onto the end face of the paper roll 8 will be heat-set by the heat plate 3 as shown Figure 4 , Figure 5 , and Figures 1 to 5 , it is noted that, for the purpose of clearly showing the main structure related to the present invention, the mechanism for supporting and driving the paper roll together with the wrapping film, which is the same as that of the prior art paper roll wrapping machine, is omitted.
[0018] Referring to Figure 6 , the clamp 1 is provided with a gap 6, which has no heat-sealing effect on the wrapping film. Specifically, the gap 6 of the present embodiment is a notch provided on the clamping surface of the clamp 1. When the clamp 1 is closed, the gap 6 will not clamp the wrapping film, and the wrapping film will not be heat-sealed, so that the sealed end of the wrapping film formed by the clamp 1 will leave an air vent 7 as shown Figure 6 , Figure 6 , Figure 7 .
[0019] As the best embodiment, the gap 6 is located at a position deviating from the center of the paper roll 8 on the clamp 1, so that the air vent 7 formed will be located at a position deviating from the center of the paper roll 8 as shown Figure 6 , Figure 2 , Figure 3 , and Figure 2 , and the plate surface of the edge plate 2 is close to the end face of the paper roll 8 in rolling, and as shown Figure 2 , Figure 3 , the two edge plates gradually reduce the gap 9 along the direction of the paper roll rolling, which gradually approaches the center of the paper roll. As shown , and
[0020] , with the rolling of the paper roll from left to right, the gradually reduced gap 9 of the two edge plates plays a role in gradually bending and converging the wrapping film 4 protruding from the end of the paper roll 8 onto the end face of the paper roll 8, and makes the wrapping film converged onto the end face of the paper roll 8 form spiral layered wrinkles 10 at a position deviating from the center of the paper roll 8. Since the air vent 7 is also located at a position deviating from the center of the paper roll 8, the spiral layered wrinkles 10 of the wrapping film play a role in pinching and covering the air vent 7, which is conducive to sealing the air vent 7 without affecting the air vent function of the air vent 7.The main working principle of the paper roll packaging machine will be explained below with reference to the drawings. First, as shown in Figure 1 , Figure 6 , Figure 7 the opening end of the packaging film 4 protruding from the end of the paper roll 8 is clamped and closed by heat melting with the clamping and pressing member 1 to form a packaging film sealing end protruding from the end of the paper roll. As shown in Figure 2 , Figure 3 , Figure 7 the paper roll 8 is rolled and the plate surface of the edge closing plate 2 is close to the end surface of the rolling paper roll. During the rolling of the paper roll from left to right, the packaging film 4 protruding from the end of the paper roll is gradually folded and converged to adhere to the end surface of the paper roll by the gradually narrowing gap 9 of the two edge closing plates 2. During the gradual folding and converging of the packaging film to adhere to the end surface of the paper roll, the air wrapped in the packaging film is discharged through the air vent 7 shown in Figure 2 , Figure 4 , Figure 5 to avoid the packaging film being burst by air flow and thus to avoid the axial displacement of the paper roll caused by air flow and to prevent the pattern on the packaging film from being dislocated due to the axial displacement of the paper roll. After the paper roll 8 passes through the edge closing plate 2, the packaging film adhered to the end surface of the paper roll forms the spiral layered wrinkle 10 shown in
[0021] The clamping and pressing member 1 of the above embodiment is provided with two air gaps 6 as shown in Figure 6 , ,
[0022] thereby two air vents 7 are left on the packaging film sealing end. As another embodiment, the clamping and pressing member 1 can be provided with only one air gap to leave only one air vent on the packaging film sealing end. Figure 2 Figure 8 One embodiment of driving the paper roll 8 in Figure 8 to roll is shown in Figure 8 , in which the paper roll 8 is driven to travel between the upper and lower circulating belts 11, 12 and to roll by the speed difference between the two circulating belts 11, 12. The paper roll 8 can roll along the lower circulating belt 12, i.e. the paper roll 8 in moves to the right and rotates clockwise, or the paper roll 8 can roll along the upper circulating belt 11, i.e. the paper roll 8 in
[0023] moves to the right and rotates counterclockwise. The direction of the movement and rotation of the paper roll is determined by the speed difference between the two circulating belts 11, 12.It is to be noted that the gap part of the present application has no hot melting effect on the packaging film. Figure 6 For example, the clamping surface of the clamp can have no gap, and the clamp can clamp the open end of the packaging film completely. However, the clamp only has sufficient temperature to melt the packaging film near the center of the paper roll, and the part of the clamp far from the center of the paper roll has a lower temperature and is insufficient to melt the packaging film. Therefore, even if the clamp clamps the open end of the packaging film completely, the formed packaging film sealing end can still form a leakage hole at the part with insufficient temperature. The clamp with such a structure also belongs to the gap part with no hot melting effect on the packaging film.
[0024] In order to enable the clamp to clamp and melt the packaging film, an electric heating element such as an electric heating wire or an electric heating tube can be arranged in the clamp. However, the clamp of the present application can also not use an electric heating element. For example, an ultrasonic element is arranged on the clamping surface of the clamp, and the open end of the packaging film is melted by ultrasonic waves to form a sealing end.
[0025] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of patent protection. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A paper roll packaging machine for preventing misalignment of packaging film patterns, comprising a clamping device for clamping and heat-melting the open end of the packaging film protruding from the end of the paper roll to form a sealed end of the packaging film, an edge-receiving plate for bending, shrinking, and bonding the packaging film protruding from the end of the paper roll to the end face of the paper roll, and a heating plate for heat-setting the packaging film bonded to the end face of the paper roll, characterized in that: The clamping component has a gap that does not heat-melt the packaging film, so that the sealing end of the packaging film formed by the clamping component clamping the heat-melted packaging film has an air vent.
2. The paper roll packaging machine for preventing misalignment of packaging film patterns as described in claim 1, characterized in that: Viewed from the end face of the paper roll, the missing part is located at the part of the clamping member that is off-center from the center of the paper roll; the surface of the edge-gathering plate is close to the end face of the rolling paper roll, and viewed from the end face of the paper roll, the edge-gathering plate is divided into two spaced-apart pieces, and the gap between the two edge-gathering plates gradually decreases from large to small along the direction of the paper roll's rolling and approaches the center of the paper roll.