Anti-adhesion compression roller set

Abstract

An anti-adhesion compression roller set comprises two compression rollers matched with each other, convex points are distributed on the circumferential face of each compression roller in an array mode, a concave position is formed between every two adjacent convex points, and when the two compression rollers rotate relatively, the convex points and the concave positions of one compression roller correspond to the concave positions and the convex points of the other compression roller respectively. The roll film penetrates through the space between the two pressing rollers which rotate relatively, and the inner face and the outer face of the roll film penetrating through the two pressing rollers are pressed through the convex points and the concave points which are continuously matched with each other between the two pressing rollers, so that concave-convex points are formed in the roll film. According to the compression roller disclosed by the utility model, rolled films passing through the compression roller disclosed by the utility model are not easy to be mutually adsorbed and adhered due to mutual extrusion after being made into packaging bag products.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag production, and more specifically to an anti-adhesion pressing roller group. Background Art

[0002] For the packaging of paper sanitary products, such as packaging bags for women's menstrual products, such as night pants packaging bags, at least one piece of night pants is generally filled into the packaging bag, and then sealed and packaged. In order to meet the environmental protection needs of recycling and plastic reduction, most of the night pants packaging bag materials have been improved from BOPP / PE to PE / PE and other materials, and the thickness of the improved packaging bags has been reduced. When the packaging bags are made of plastic roll film, the roll film is directly heat-sealed and cooled after passing through the guide roller to make bags. The surface of the roll film is not treated in any way. When shipping, the packaging bags are bundled, and several bundles are shipped in a box.

[0003] Due to the improvement of the film material of the packaging bag, the thickness of the packaging bag is light and thin. According to the original production method, the outer surface of the packaging bag is not treated in any way. When the packaging bags are packed and shipped, the bundled packaging bags are stacked. Under the extrusion of gravity and external force, the air between the packaging bags is squeezed out, and the adjacent packaging bags are tightly adsorbed and adhered together, generating static adsorption. The above situation will cause the adjacent packaging bags to be easily picked up when the robot or other equipment grabs a packaging bag when it needs to be filled, affecting the filling quality and efficiency. Utility Model Content

[0004] The utility model aims to provide an anti-adhesion pressing roller, which can prevent the roll films passing through the pressing roller from being easily adsorbed and adhered to each other due to being squeezed after being made into packaging bag products.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] An anti-adhesion pressure roller group includes two pressure rollers that cooperate with each other.

[0007] There are convex points distributed in an array on the circumferential surface of each pressing roller, and concave areas are formed between adjacent convex points. When the two pressing rollers rotate relative to each other, the convex points and concave areas of one pressing roller correspond to the concave areas and convex points of the other pressing roller respectively; the roll film passes between the two relatively rotating pressing rollers, and the convex points and concave areas between the two pressing rollers that continuously cooperate with each other press the inner and outer surfaces of the roll film passing therethrough, so that convex and concave areas are formed in the roll film.

[0008] Furthermore, it also includes an adjusting device capable of adjusting the pressure between the two pressing rollers, and at least one pressing roller is equipped with the adjusting device.

[0009] Furthermore, a rotating shaft is passed through the middle of the pressure roller, and the adjusting device includes a bearing seat. Both ends of the rotating shaft are respectively installed in the bearing seats. A column is vertically connected to the outside of the bearing seat. A spring is sleeved on each column. The head end of the spring is against the end of the bearing seat, and the other end of the spring is against a rotating part that can be pushed to compress the spring. The compressed spring pushes the rotating shaft in the bearing seat to adjust the tightness between the pressure rollers.

[0010] Furthermore, a chamfer is formed on the top of the protrusion, and the chamfer radius is 6.0-7.0 microns.

[0011] Furthermore, in the pressing roller, the convex points and concave points are arranged at intervals. When the two pressing rollers rotate relative to each other, the convex points of one pressing roller are engaged with the concave points of the other pressing roller, and the rolled film passes through the engaged cooperation of at least one group of convex points and concave points.

[0012] Furthermore, the two rollers rotate in opposite directions at the same linear speed, and the rollers have the same diameter.

[0013] Furthermore, the roll film is a thin plastic roll film made of PE / PE.

[0014] After adopting the above technical solution, the utility model at least achieves the following technical effects:

[0015] 1. The film roll passing between the two rollers is squeezed by the convex points on the roller surface, and the inner and outer surfaces of the film roll form concave and convex points, which can avoid static adsorption and are not easy to stick to each other;

[0016] 2. The roll film is made into packaging bags after passing through two rollers. Due to the uneven surface, when the packaging bags are bundled and packed, they will not be adsorbed and adhered to each other due to extrusion. When filling and grabbing, it can avoid the situation of carrying multiple packaging bags at the same time, thus improving the filling efficiency;

[0017] 3. An adjustment device is provided to adjust the pressure between the two rollers to adjust the depth of the concave and convex points on the roll film to adapt to different roll film products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a working state diagram of the utility model;

[0020] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 It is a planar development diagram of the pressure roller in the utility model. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0023] Combination Figures 1 to 4 As shown, the utility model discloses an anti-adhesion roller group, including two rollers 1 that cooperate with each other. In the utility model, convex points 11 are distributed in an array on the circumferential surface 10 of each roller 1, and concave areas 12 are formed between adjacent convex points, and the convex points 11 and the concave areas 12 are arranged in an interval. When the two rollers 1 rotate relative to each other, the convex points 11 and the concave areas 12 on one roller 1 can correspond to the concave areas 12 and the convex points 11 of the other roller 1, respectively. Therefore, when the roll film 2 passes between the two rollers 1 that rotate relative to each other, the convex points 11 and the concave areas 12 between the two rollers 1 that continuously cooperate with each other press the inner and outer surfaces of the roll film 2 passing therethrough, so that concave and convex points are formed in the roll film 1 (not shown in the figure).

[0024] like Figure 2 , Figure 3 As shown, when the two rollers 1 rotate relative to each other, the convex point 11 of one roller 1 fits into the concave part 12 of the other roller, and the roll film 2 can pass through the fitting cooperation of at least one group of convex points 11 and concave part 12, so that concave and convex points can be formed on the film surface of both sides of the roll film 2 passing through the roller 1, and vacuum adsorption is not easy to occur. Among them, the two rollers 1 rotate in opposite directions at the same linear speed, and the diameters of the two rollers 1 are equal. The top of the convex point 11 can be chamfered, and the chamfer radius is 6.0-7.0 microns. Preferably, the chamfer radius of the top of the convex point 11 can be 6.5 microns to avoid being too sharp and easy to puncture the roll film, and being too round will cause the roll film to form large pits, affecting the appearance.

[0025] Furthermore, an adjusting device 3 is provided for adjusting the pressure between the two pressure rollers 1. The adjusting device may be provided on one of the pressure rollers or both of the pressure rollers 1. In this embodiment, the adjusting device 3 is provided only on one of the pressure rollers located at the top. Because a rotating shaft 13 is provided in the middle of the pressure roller 1 to drive the pressure roller 1 to rotate, the adjusting device includes a bearing seat 31. The two ends of the rotating shaft 13 are respectively installed in the bearing seat 31. A column 32 is vertically connected to the outer side of the bearing seat. A spring 33 is sleeved on each column 32. The head end of the spring 33 abuts against the end of the bearing seat 31. The other end of the spring 33 abuts against a rotating member 34 that can be pushed to compress the spring 32. The length of the spring 33 is changed by rotating the rotating member 34, so that the compressed spring 32 pushes the rotating shaft 13 in the bearing seat 31 to adjust the tightness between the pressure rollers 1, adjust the pressure between the two pressure rollers 1, and further adjust the depth of the concave and convex points on the roll film. During adjustment, the rotating member 33 is rotated to move up and down in the column 31 , thereby loosening or squeezing the spring 32 , adjusting the force of the spring on the rotating shaft 12 , and thereby adjusting the pressure between the two pressure rollers 1 on the roll film 2 .

[0026] In this embodiment, the roll film is a thin plastic roll film whose material may be PE / PE. The roll film may also be other thin film materials that need to form concave-convex patterns on the surface to avoid mutual adhesion. During operation, the plastic roll film 2 that has been printed with patterns but has not yet been heat-sealed and bagged passes between the two rollers 1. Since the circumferential surfaces of the two rollers 1 are provided with convex points 11 and concave parts 12, the positions of the convex points 11 and concave parts 12 of the two rollers 1 correspond to each other, so that the surface of the roll film 2 passing through the two rollers 1 is squeezed by the convex points 12 to form concave-convex patterns on both sides, so that after the roll film 2 is made into packaging bags, the packaging bags will not be squeezed when they are packed and shipped, causing the air between adjacent packaging bags to be squeezed out, and the packaging bags will be adsorbed and adhered to each other, affecting the subsequent filling of the packaging bags.

[0027] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An anti-adhesion pressure roller assembly, comprising two pressure rollers that cooperate with each other, characterized in that: There are convex points distributed in an array on the circumferential surface of each pressing roller, and concave areas are formed between adjacent convex points. When the two pressing rollers rotate relative to each other, the convex points and concave areas of one pressing roller correspond to the concave areas and convex points of the other pressing roller respectively; the roll film passes between the two relatively rotating pressing rollers, and the convex points and concave areas between the two pressing rollers that continuously cooperate with each other press the inner and outer surfaces of the roll film passing therethrough, so that convex and concave areas are formed in the roll film.

2. The anti-adhesion pressure roller assembly according to claim 1, characterized in that: It also includes an adjusting device which can adjust the pressure between the two pressing rollers, and at least one pressing roller is equipped with the adjusting device.

3. The anti-adhesion pressure roller assembly according to claim 2, characterized in that: A rotating shaft is passed through the middle of the pressure roller, and the adjusting device includes a bearing seat. Both ends of the rotating shaft are respectively installed in the bearing seats. A column is vertically connected to the outside of the bearing seat. A spring is sleeved on each column. The head end of the spring abuts against the end of the bearing seat, and the other end of the spring abuts against a rotating part that can be pushed to compress the spring. The compressed spring pushes the rotating shaft in the bearing seat to adjust the tightness between the pressure rollers.

4. The anti-adhesion pressure roller assembly according to claim 1, characterized in that: The top of the bump is chamfered, and the chamfer radius is 6.0-7.0 microns.

5. The anti-adhesion pressure roller assembly according to claim 1, characterized in that: In the pressing roller, convex points and concave points are arranged at intervals. When the two pressing rollers rotate relatively, the convex points of one pressing roller are embedded in the concave points of the other pressing roller, and the rolled film passes through the embedded cooperation of at least one group of convex points and concave points.

6. The anti-adhesion pressure roller assembly according to claim 1, characterized in that: The two rollers rotate in opposite directions at the same linear speed and have equal diameters.

7. The anti-adhesion pressure roller assembly according to claim 1, characterized in that: The roll film is a thin plastic roll film made of PE / PE.

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