Preheating device for paperboard processing

Abstract

The utility model relates to the technical field of paperboard processing, in particular to a preheating device for paperboard processing, which comprises a heat insulation box, two feed and discharge ports are symmetrically arranged on the heat insulation box, two groups of connecting ropes are symmetrically fixed in the heat insulation box, a preheating cylinder is fixed by the two groups of connecting ropes together, a cavity and a plurality of holes are arranged on the preheating cylinder, and the preheating cylinder is provided with a plurality of air holes. The multiple holes communicate with the cavity, a heat supply mechanism is fixed to the preheating cylinder, and two linear motors are symmetrically fixed to the heat preservation box. When the corrugated board preheating device is used, the preheating cylinder is driven to shake in the heat preservation box, so that high-temperature steam sprayed out of the multiple holes in the preheating cylinder is discharged to different positions in the heat preservation box, the high-temperature steam is discharged into the heat preservation box in a larger area, and then the high-temperature steam preheats corrugated boards penetrating through the heat preservation box more evenly; and the preheating effect of the corrugated board is ensured, so that the processing quality of the corrugated board is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard processing, in particular to a preheating device for cardboard processing. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper sandwich and one layer of cardboard. It has high mechanical strength and can withstand collisions and drops during handling. A high-efficiency energy-saving preheating device for corrugated cardboard is disclosed in the publication number CN215360171U. When this device is in use, a hot air blower is used to spray the hot air for preheating onto the corrugated cardboard to be preheated through multiple nozzles, so as to achieve the purpose of preheating. However, in the actual use process of this high-efficiency energy-saving preheating device for corrugated cardboard, there are the following drawbacks: Although the corrugated cardboard is constantly moving, the orientation and position of the hot air sprayed by multiple nozzles are fixed, which is extremely likely to cause uneven spraying of hot air. Coupled with the low heat conduction efficiency of the corrugated cardboard, it is easy to cause uneven preheating of the corrugated cardboard. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the defect that uneven preheating is likely to occur during the preheating of corrugated cardboard in the prior art, and to propose a preheating device for cardboard processing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] Design a preheating device for cardboard processing, including a heat preservation box, two feeding and discharging ports are symmetrically arranged on the heat preservation box, two groups of connecting ropes are symmetrically fixed inside the heat preservation box, a preheating cylinder is fixed by the two groups of connecting ropes, a cavity and a plurality of holes are arranged on the preheating cylinder, and the plurality of holes are all communicated with the cavity. A heat supply mechanism is fixed on the preheating cylinder, two linear motors are symmetrically fixed on the heat preservation box, a fixing frame is fixed on the sliders of the two linear motors, and two push plates are symmetrically fixed on the fixing frame.

[0006] Preferably, the heat supply mechanism includes a plurality of first conduits, the plurality of first conduits are symmetrically fixed on the preheating cylinder and communicated with the cavity, a plurality of hoses are respectively fixed on the plurality of first conduits, a plurality of second conduits are respectively fixed on the plurality of hoses, and the plurality of second conduits jointly penetrate through the heat preservation box and are fixed with a high-temperature steam generator.

[0007] Preferably, blocking and buffering mechanisms are fixed on the heat preservation box at both ends of the preheating cylinder.

[0008] Preferably, the blocking and buffering mechanism includes a plurality of springs, and the plurality of springs are all fixed on the heat preservation box at one of the feeding and discharging ports, and a blocking ball is fixed on each spring.

[0009] Preferably, a conveying mechanism is provided in the preheating cylinder and the two feeding and discharging ports.

[0010] Preferably, the conveying mechanism includes two roller conveyors, and the two roller conveyors penetrate through the preheating cylinder and the two feeding and discharging ports, and the two roller conveyors are symmetrically arranged, and an adjusting mechanism is jointly fixed on each roller conveyor and the heat preservation box.

[0011] Preferably, the adjusting mechanism includes two fixing plates, and the two fixing plates are both fixed on the heat preservation box, a threaded rod penetrates through each fixing plate, nuts are threadedly sleeved on the threaded rods on both sides of the fixing plate, and the threaded rod is fixed on the roller conveyor.

[0012] For a preheating device for cardboard processing proposed by the present utility model, the beneficial effects are as follows: when the preheating device for cardboard processing is in use, two reciprocating push plates are used to alternately push two groups of connecting ropes, thereby driving the preheating cylinder to shake in the heat preservation box, so that the high-temperature steam ejected from the multiple holes on the preheating cylinder is discharged to different positions in the heat preservation box, enabling the high-temperature steam to be discharged to a larger area in the heat preservation box, and further enabling the high-temperature steam to more evenly preheat the corrugated cardboard passing through the heat preservation box, ensuring the preheating effect of the corrugated cardboard, and further ensuring the quality of corrugated cardboard processing. Description of the Drawings

[0013] Figure 1 is the front view of a preheating device for cardboard processing proposed by the present utility model;

[0014] Figure 2 is the right view at A-A of a preheating device for cardboard processing proposed by the present utility model Figure 1 in;

[0015] Figure 3 is the top view at B-B of a preheating device for cardboard processing proposed by the present utility model Figure 1 in;

[0016] Figure 4 is the enlarged view at C of a preheating device for cardboard processing proposed by the present utility model Figure 3 in.

[0017] In the figure: 1, heat preservation box; 2, inlet and outlet; 3, preheating cylinder; 4, cavity; 5, hole; 6, first conduit; 7, hose; 8, second conduit; 9, roller conveyor; 10, fixed plate; 11, threaded rod; 12, nut; 13, connecting rope; 14, linear motor; 15, fixed bracket; 16, push plate; 17, blocking ball; 18, spring. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1: Refer to Figures 1-3 , a preheating device for cardboard processing, including a heat preservation box 1, two symmetrically arranged inlets and outlets 2 are provided on the heat preservation box 1, two groups of connecting ropes 13 are symmetrically fixed inside the heat preservation box 1, and a preheating cylinder 3 is jointly fixed by the two groups of connecting ropes 13. A cavity 4 and a plurality of holes 5 are provided on the preheating cylinder 3. The plurality of holes 5 are all communicated with the cavity 4. The plurality of holes 5 are evenly distributed up and down and symmetrically arranged on the upper and lower inner walls of the preheating cylinder 3. The plurality of holes 5 are used to preheat the corrugated cardboard on both sides at the same time. A heating mechanism is fixed on the preheating cylinder 3. The heating mechanism includes a plurality of first conduits 6. The plurality of first conduits 6 are symmetrically fixed on the preheating cylinder 3 and communicated with the cavity 4. A plurality of hoses 7 are respectively fixed on the plurality of first conduits 6. A plurality of second conduits 8 are respectively fixed on the plurality of hoses 7. The plurality of second conduits 8 jointly penetrate through the heat preservation box 1 and are fixed with a high-temperature steam generator. The arrangement of the plurality of hoses 7 enables the transfer of high-temperature steam between the second conduit 8 and the first conduit 6 not to be affected when the preheating cylinder 3 shakes, and at the same time does not affect the shaking of the preheating cylinder 3;

[0020] Two linear motors 14 are symmetrically fixed on the heat preservation box 1. A fixed bracket 15 is jointly fixed on the sliders of the two linear motors 14. Two push plates 16 are symmetrically fixed on the fixed bracket 15. The two linear motors 14 work synchronously. The two linear motors 14 drive the two push plates 16 to move reciprocally through the fixed bracket 15. The two reciprocally moving push plates 16 alternately push the two groups of connecting ropes 13, so as to drive the preheating cylinder 3 to shake in the heat preservation box 1. This enables the high-temperature steam ejected from the plurality of holes 5 on the preheating cylinder 3 to be discharged to different positions in the heat preservation box 1, so that the high-temperature steam is discharged to a larger area in the heat preservation box 1, and then enables the high-temperature steam to preheat the corrugated cardboard passing through the heat preservation box 1 more evenly, ensuring the preheating effect of the corrugated cardboard and thus ensuring the quality of corrugated cardboard processing.

[0021] Example 2: On the basis of Example 1, refer to Figures 1-4, as another preferred embodiment of the present utility model, the difference from Embodiment 1 is that blocking and buffering mechanisms are fixed on the heat preservation boxes 1 at both ends of the preheating cylinder 3. The blocking and buffering mechanism includes a plurality of springs 18, and the plurality of springs 18 are all fixed on the heat preservation box 1 on one of the feeding and discharging ports 2. A blocking ball 17 is fixed on each spring 18. The blocking and buffering mechanism is used to limit the shaking range of the preheating cylinder 3, thereby avoiding the preheating cylinder 3 hitting the heat preservation box 1 and being damaged, and also avoiding the preheating cylinder 3 with excessive shaking from affecting the corrugated cardboard conveyed in the preheating cylinder 3.

[0022] A conveying mechanism is jointly provided in the preheating cylinder 3 and the two feeding and discharging ports 2. The conveying mechanism is used to convey the corrugated cardboard that needs to be preheated. The conveying mechanism includes two roller conveyors 9. The two roller conveyors 9 both penetrate through the preheating cylinder 3 and the two feeding and discharging ports 2, and the two roller conveyors 9 are symmetrically arranged. An adjusting mechanism is jointly fixed on each roller conveyor 9 and the heat preservation box 1. The distance between the two roller conveyors 9 can be adjusted by using the adjusting mechanism, so as to meet the preheating requirements of corrugated cardboard with different thicknesses.

[0023] The adjusting mechanism includes two fixing plates 10, and the two fixing plates 10 are both fixed on the heat preservation box 1. A threaded rod 11 is penetrated through each fixing plate 10. Nuts 12 are threadedly sleeved on the threaded rods 11 on both sides of the fixing plate 10. The threaded rod 11 is fixed on the roller conveyor 9. By screwing the two nuts 12 on the threaded rod 11, the lengths of the threaded rods 11 on both sides of the fixing plate 10 can be adjusted, thereby changing the height of the roller conveyor 9.

[0024] During use, according to the thickness of the corrugated cardboard that needs to be preheated, the distance between the two roller conveyors 9 is adjusted. After the distance between the roller conveyors 9 is adjusted to a suitable position, when the corrugated cardboard that needs to be preheated is driven by the two roller conveyors 9 to pass through the heat preservation box 1, it is preheated by the high-temperature steam ejected from the plurality of holes 5 on the preheating cylinder 3. And the shaking preheating cylinder 3 is blocked by a plurality of blocking balls 17 and will not touch the two roller conveyors 9, so that neither the two roller conveyors 9 nor the preheating cylinder 3 will be damaged due to impact. At the same time, the shaking preheating cylinder 3 can also drive the high-temperature steam to flow in the heat preservation box 1, accelerating the uniformity of the distribution of the high-temperature steam in the heat preservation box 1.

[0025] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A preheating device for cardboard processing, comprising a heat preservation box (1), and two feeding and discharging openings (2) are symmetrically arranged on the heat preservation box (1), characterized in that, Inside the incubator (1), two groups of connecting ropes (13) are symmetrically fixed. A preheating cylinder (3) is fixed by the two groups of connecting ropes (13). A cavity (4) and a plurality of holes (5) are provided on the preheating cylinder (3). The plurality of holes (5) are all communicated with the cavity (4). A heating mechanism is fixed on the preheating cylinder (3). Two linear motors (14) are symmetrically fixed on the incubator (1). A fixing frame (15) is fixed on the sliders of the two linear motors (14). Two push plates (16) are symmetrically fixed on the fixing frame (15).

2. The preheating device for cardboard processing according to claim 1, characterized in that, The heating mechanism includes a plurality of first conduits (6). The plurality of first conduits (6) are symmetrically fixed on the preheating cylinder (3) and communicated with the cavity (4). A plurality of hoses (7) are respectively fixed on the plurality of first conduits (6). A plurality of second conduits (8) are respectively fixed on the plurality of hoses (7). The plurality of second conduits (8) jointly penetrate through the incubator (1) and are fixed with a high-temperature steam generator.

3. The preheating device for cardboard processing according to claim 1, characterized in that Blocking and buffering mechanisms are fixed on the incubator (1) at both ends of the preheating cylinder (3).

4. The preheating device for cardboard processing according to claim 3, wherein, The blocking and buffering mechanism includes a plurality of springs (18). The plurality of springs (18) are all fixed on the incubator (1) at one of the feeding and discharging openings (2). A blocking ball (17) is fixed on each spring (18).

5. The preheating device for cardboard processing according to claim 1, characterized in that, A conveying mechanism is provided in the preheating cylinder (3) and the two feeding and discharging openings (2).

6. The preheating device for cardboard processing according to claim 5, characterized in that, The conveying mechanism includes two roller conveyors (9). The two roller conveyors (9) both penetrate through the preheating cylinder (3) and the two feeding and discharging openings (2) and are symmetrically arranged. An adjusting mechanism is jointly fixed on each roller conveyor (9) and the incubator (1).

7. The preheating device for cardboard processing according to claim 6, characterized in that, The adjusting mechanism includes two fixing plates (10). The two fixing plates (10) are both fixed on the incubator (1). A threaded rod (11) is penetrated through each fixing plate (10). Nuts (12) are threadedly sleeved on the threaded rods (11) on both sides of the fixing plate (10). The threaded rod (11) is fixed on the roller conveyor (9).

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