A honeycomb paperboard edge wrapping extrusion device

Abstract

The present invention provides a honeycomb paperboard edge wrapping extrusion device, comprising at least one extrusion mechanism, each of which comprises two horizontally symmetrically arranged extrusion plates and an elastic unit on one side of the extrusion plate used in conjunction with the extrusion plate, at least one pair of vertically placed extrusion frames are symmetrically arranged in the middle of the two extrusion plates, and each pair of extrusion frames is connected by a movable elastic body. The present invention can automatically control the edge wrapping force, so that the edge wrapping force is moderate and in a more appropriate state, which is conducive to ensuring the edge wrapping quality, and has a simple structure and is easy to operate.

Description

Technical Field

[0001] The invention relates to the field of honeycomb paperboard processing, in particular to a honeycomb paperboard edge wrapping extrusion device. Background Art

[0002] With the development of economy and the improvement of people's environmental protection awareness, the application scope of honeycomb paperboard as an environmentally friendly material is getting wider and wider. Honeycomb paperboard is mostly used in the field of packaging, so the appearance requirements of honeycomb paperboard are relatively high. Honeycomb paperboard is generally composed of a single layer of core paper with a given thickness and a double layer of surface paper glued together. After the honeycomb paperboard is formed, it is generally processed by edge wrapping for beauty and strength. The existing edge wrapping process mostly adopts passive edge wrapping technology. Here, "passive" means that the honeycomb paperboard does not use additional edge protection, corner protection paper or edge wrapping paper tape for edge wrapping during the edge wrapping process. The passive edge wrapping process is to extrude the core paper of the honeycomb paperboard to expose the surface layer of the edge, and then use the surface layer for edge wrapping. In order to make the edge wrapping quality higher, the pre-edge wrapping method can be used first, and then the edge wrapping can be carried out. The existing edge wrapping device is mostly implemented by an extrusion device, but the existing extrusion device is not easy to control and adjust the force. It is easy to damage the edge wrapping due to excessive force or fail to achieve a good edge wrapping effect due to too little force. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a honeycomb paperboard edge-wrapping extrusion device, which can automatically control the edge-wrapping force so that the edge-wrapping force is moderate and in a more appropriate state, which is beneficial to ensuring the edge-wrapping quality, and has a simple structure and is easy to operate.

[0004] The technical solution of the present invention is: a honeycomb paperboard edge wrapping extrusion device, comprising at least one extrusion mechanism, each of the extrusion mechanisms comprising two horizontally symmetrically arranged extrusion plates and an elastic unit on one side of the extrusion plate used in conjunction with the extrusion plate, the relative distance between the two extrusion plates is adjusted by the extension and contraction of the elastic unit, at least one pair of vertically placed extrusion frames are symmetrically arranged in the middle of the two extrusion plates, each pair of extrusion frames is connected by a movably arranged elastic body, the relative distance between the two extrusion frames is further adjusted by the extension and contraction of the elastic body, and the relative distance between the two extrusion plates can be further adjusted.

[0005] The technical solution of the present invention is that the elastic body is formed by winding elastic wire bodies connected end to end.

[0006] Furthermore, the elastic body is a rubber band, the raw materials of which are easily available and relatively economical.

[0007] Furthermore, the extrusion frame is a rectangular metal plate, and the extrusion frame and the extrusion plate are connected by welding, so the connection is firm and reliable.

[0008] Furthermore, the elastic unit includes a support frame, a connecting rod, a connecting plate and a spring sleeved on the connecting rod, one end of the connecting rod is connected to the support frame, and the other end is connected to the connecting plate, the connecting rod is parallel to the ground and is arranged perpendicular to the extrusion plate; one end of the spring is connected to the support frame, and the other end is connected to the connecting plate; the connecting plate is arranged between the connecting rod and the extrusion plate to connect the extrusion plate and the connecting rod. The relative distance between the two extrusion plates is adjusted by the extrusion plate extrusion spring.

[0009] Furthermore, the number of the elastic units is an even number not less than four. When the number of the elastic units is four, the four elastic units are respectively arranged at both ends of the two extrusion plates; when the number of the elastic units is greater than four, the four elastic units are respectively arranged at both ends of the two extrusion plates, and the remaining elastic units are evenly distributed between the four elastic units and avoid the vicinity of the position where the extrusion frame is located.

[0010] Furthermore, the extrusion plate is an L-shaped metal plate, and the extrusion frame is welded to the outer side surface of the extrusion plate, so the connection is firm and reliable.

[0011] Furthermore, the two extrusion plates are in a non-contact state when no paper is fed, and a certain adjustable space is reserved to ensure that the relative distance between the extrusion plates can be manually adjusted according to the width of the honeycomb paperboard when no paper is fed.

[0012] Furthermore, the feed port of the extrusion plate opens outward at a certain angle, the angle range is 20-50 degrees, and the optimal angle is 30 degrees; when the number of the extrusion mechanisms is greater than two, the opening angle at the feed port of the extrusion plate decreases successively along the feeding direction, because after the action of the previous extrusion mechanism, the tightness of the honeycomb paperboard at the edge wrapping is improved. When the next extrusion mechanism is used, only by reducing the opening angle at the feed port of the extrusion plate can the effect of further improving the tightness of the edge wrapping be achieved.

[0013] Furthermore, the extruded plate is a long strip structure, and the long strip honeycomb paperboard is hemmed using the extrusion device of the present invention, with good effect. The extrusion device of the present invention is also suitable for the hemming process of square honeycomb paperboard, but the hemming effect is not as good as that of the long strip honeycomb paperboard.

[0014] Beneficial effects of the present invention:

[0015] (1) The present invention provides a vertically placed extrusion frame on the extrusion mechanism, and then connects the middle parts of the two symmetrical extrusion frames through an elastic body. The elasticity of the elastic body drives the distance between the extrusion frames to be adjustable. Since the extrusion frame is fixed on the extrusion plate, the relative distance between the two extrusion plates in the height direction is further adjustable, thereby ensuring that the edge wrapping of the honeycomb paperboard is uniform in the vertical direction. In addition, the extrusion force can be controlled by adjusting the elastic force of the elastic body, and the force size is highly controllable, so that the edge wrapping will not be damaged due to excessive force or the edge wrapping effect will not be achieved due to insufficient force.

[0016] (2) The present invention uses an extrusion frame combined with an elastic body to improve the uniformity of the hemming, has a simple structure, and the raw materials are readily available, which is relatively economical and has a low cost;

[0017] (3) The feed port of the extrusion plate of the extrusion mechanism of the present invention is opened outward at a certain angle, which can help the honeycomb paperboard to smoothly enter the extrusion mechanism and improve the edge wrapping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 2 is a front view of embodiment 1 of the present invention;

[0020] Figure 3 It is a structural diagram of embodiment 3 of the present invention.

[0021] Legend:

[0022] 1. Extrusion mechanism; 11. Extrusion plate; 12. Elastic unit; 121. Support frame; 122. Connecting rod; 123. Connecting plate; 124. Spring; 2. Extrusion frame; 3. Elastic body. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment 1:

[0025] As attached Figure 1 As shown, a honeycomb paperboard edge wrapping extrusion device includes an extrusion mechanism 1, which includes two horizontally symmetrically arranged extrusion plates 11 and an elastic unit 12 on one side of the extrusion plate 11 for use with the extrusion plate 11. A pair of vertically placed extrusion frames 2 are symmetrically arranged in the middle of the two extrusion plates 11, and the two symmetrical extrusion frames 2 are connected by a movable elastic body 3, which is a rubber band.

[0026] In this embodiment, the extrusion frame 2 is a rectangular metal plate, and the extrusion frame 2 is connected to the outer side surface of the extrusion plate 11 by welding.

[0027] In this embodiment, the elastic unit 12 includes a support frame 121, a connecting rod 122, a connecting plate 123, and a spring 124 sleeved on the connecting rod 122. One end of the connecting rod 122 is connected to the support frame 121, and the other end is connected to the connecting plate 123. The connecting rod 122 is parallel to the ground and is vertically arranged with the extrusion plate 11; one end of the spring 124 is connected to the support frame 121, and the other end is connected to the connecting plate 123; the connecting plate 123 is arranged between the connecting rod 122 and the extrusion plate 11. There are four elastic units 12, and the four elastic units 12 are respectively arranged at both ends of the two extrusion plates 11.

[0028] In this embodiment, the pressing plate 11 is an L-shaped metal plate, and the pressing plate 11 is a long strip structure. The two pressing plates 11 are in a non-contact state when no paper is fed.

[0029] In this embodiment, the feed port of the extrusion plate 11 opens outward at a certain angle, and the angle range is 30 degrees.

[0030] When the honeycomb paperboard edge wrapping extrusion device in this embodiment is working, the honeycomb paperboard first enters into the space surrounded by the two extrusion plates 11 through the feed port of the extrusion plate 11, and the side edge wrapping part of the honeycomb paperboard is squeezed by the extrusion plate 11 to fit tightly against the side of the honeycomb paperboard. Since the honeycomb paperboard generally has a certain thickness, it is difficult to achieve uniform extrusion in the thickness direction of the honeycomb paperboard during the pressing process of the extrusion plate 11. The existence of the extrusion frame 2 and the elastic body 3 can just make up for the poor uniformity of the edge wrapping in the thickness direction. By adjusting the elasticity of the elastic body 3, it can be ensured that the two extrusion frames 2 are in a pressed state, thereby driving the upper part of the extrusion plate 11 to be in a pressed state. When the honeycomb paperboard passes through the extrusion frame 2, it can obtain uniform extrusion edge wrapping, and the final edge wrapping quality is high.

[0031] Embodiment 2:

[0032] As attached Figure 3 As shown, a honeycomb paperboard edge wrapping extrusion device includes two extrusion mechanisms 1, each of which includes two horizontally symmetrically arranged extrusion plates 11 and an elastic unit 12 on one side of the extrusion plate 11 for use with the extrusion plate 11, and two pairs of extrusion frames 2 are symmetrically arranged in the middle of the two extrusion plates 11, and the two pairs of extrusion frames are connected by a movable elastic body 3, which is a rubber band.

[0033] In this embodiment, the extrusion frame 2 is a rectangular metal plate, and the extrusion frame 2 is connected to the outer side surface of the extrusion plate 11 by welding.

[0034] In this embodiment, the elastic unit 12 includes a support frame 121, a connecting rod 122, a connecting plate 123, and a spring 124 sleeved on the connecting rod 122. One end of the connecting rod 122 is connected to the support frame 121, and the other end is connected to the connecting plate 123. The connecting rod 122 is parallel to the ground and is arranged perpendicular to the extrusion plate 11. One end of the spring 124 is connected to the support frame 121, and the other end is connected to the connecting plate 123. The connecting plate 123 is arranged between the connecting rod 122 and the extrusion plate 11. There are six elastic units 12, of which four elastic units 12 are respectively arranged at the two ends of the two extrusion plates 11, and the other two elastic units 12 are respectively arranged between the first four elastic units 12.

[0035] In this embodiment, the pressing plate 11 is an L-shaped metal plate, and the pressing plate 11 is a long strip structure. The two pressing plates 11 are in a non-contact state when no paper is fed.

[0036] In this embodiment, the number of the extrusion mechanisms 1 is two, and the opening angle of the extrusion plate 11 at the feed port decreases along the feed direction, and is 45 degrees and 25 degrees respectively.

[0037] When the honeycomb paperboard edge wrapping extrusion device of this embodiment is working, the honeycomb paperboard is sequentially extruded and edge wrapped by two extrusion mechanisms 1. The working principle of each extrusion mechanism 1 is the same as that of embodiment 1. After two extrusion and edge wrapping, the edge wrapping quality of the honeycomb paperboard can be further improved.

Claims

1. A honeycomb paperboard edge extrusion device, characterized in that: It comprises at least one extrusion mechanism, each of which comprises two horizontally symmetrically arranged extrusion plates and an elastic unit on one side of the extrusion plate used in conjunction with the extrusion plate, at least one pair of vertically placed extrusion frames are symmetrically arranged in the middle of the two extrusion plates, each pair of extrusion frames is connected by a movable elastic body; the elastic body is formed by winding an elastic line body connected end to end.

2. The honeycomb paperboard edge wrapping extrusion device according to claim 1, characterized in that: The elastic body is a rubber band.

3. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The extrusion frame is a rectangular metal plate, and the extrusion frame and the extrusion plate are connected by welding.

4. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The elastic unit includes a support frame, a connecting rod, a connecting plate and a spring sleeved on the connecting rod, one end of the connecting rod is connected to the support frame, and the other end is connected to the connecting plate, the connecting rod is parallel to the ground and is arranged perpendicular to the extrusion plate; one end of the spring is connected to the support frame, and the other end is connected to the connecting plate; the connecting plate is arranged between the connecting rod and the extrusion plate.

5. The honeycomb paperboard edge wrapping extrusion device according to claim 4, characterized in that: The number of the elastic units is an even number not less than four.

6. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The extrusion plate is an L-shaped metal plate, and the extrusion frame is welded to the outer side surface of the extrusion plate.

7. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The two pressing plates are in a non-contact state when no paper is fed.

8. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The feed port of the extrusion plate opens outward at a certain angle, and the angle range is 20-50 degrees; when the number of the extrusion mechanisms is greater than two, the opening angle of the feed port of the extrusion plate decreases successively along the feeding direction.

9. The honeycomb paperboard edge wrapping extrusion device according to claim 1 or 2, characterized in that: The extruded plate is a long strip structure.

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