An on-line cutting device for polyethylene foam

Abstract

This utility model belongs to the field of foam plastic cutting technology, and particularly relates to an online cutting device for polyethylene foam plastic. It includes a support frame and a conveyor belt installed within the support frame. A mounting frame is fixedly installed on the conveyor belt. A laser cutting head is slidably mounted on the inner wall of the mounting frame. Adjustment plates are symmetrically slidably mounted on both sides below the mounting frame. Pushing mechanisms are symmetrically arranged on the support frame below the mounting frame. Two pushing mechanisms are respectively connected to two adjustment plates. An inner frame is provided inside the conveyor belt, and both ends of the inner frame are fixedly connected to the support frame. The pressure plate of this utility model can press the foam plastic from top to bottom. The pressure plate is adjacent to the mounting frame, and under the pressing action of the pressure plate, the cut portion is flattened, effectively preventing warping. The pressure plate is made of metal, which facilitates pressing and also has a cooling effect.

Description

Technical Field

[0001] This utility model belongs to the field of foam plastic cutting technology, and in particular relates to an online cutting device for polyethylene foam plastic. Background Technology

[0002] Polyethylene foam is made primarily of polyethylene resin, with the addition of foaming agents and other additives. It is a very important cushioning material. Polyethylene foam is widely used in packaging for cushioning precision instruments, household appliances, glass and ceramic products, handicrafts, and valuables; it can also be made into cushioning pads as inner packaging materials.

[0003] The published patent (publication number CN221160704U) discloses a cutting device for PE foam production, including an operating table. Support frames are fixedly installed on both sides of the bottom of the operating table. A conveying groove is opened in the inner wall of the operating table. By setting up a structure such as a motion motor, heating wire, clamping air cylinder, and buffer plate, the clamping air cylinder can be activated to fix the PE foam board in place, which can prevent injury to the operator.

[0004] In existing technologies, polyethylene foam is cut into the required shape using hot melt or laser cutting. However, the edges are prone to curling due to the heat effect, which directly leads to a decrease in cutting quality and requires subsequent secondary processing. This secondary processing greatly affects production efficiency and results. Utility Model Content

[0005] This invention addresses the technical problem in the background art where general cutting methods, such as hot-melt or laser cutting, easily cause the edges to curl up due to thermal effects. This curling directly leads to a decrease in cutting quality, requiring subsequent secondary processing, which significantly impacts production efficiency and effectiveness. The invention provides an online cutting device for polyethylene foam.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An online cutting device for polyethylene foam includes a support frame and a conveyor belt installed inside the support frame. A mounting frame is fixedly installed on the conveyor belt. A laser cutting head is slidably disposed on the inner wall of the mounting frame. Adjustment plates are symmetrically slidably disposed on both sides below the mounting frame. Pushing mechanisms are symmetrically disposed on the support frame below the mounting frame. The two pushing mechanisms are respectively connected to the two adjustment plates. An inner frame is disposed inside the conveyor belt. The two ends of the inner frame are fixedly connected to the support frame.

[0008] The front side of the mounting frame is also provided with a pressure plate. The upper ends of the two adjustment plates are fixedly connected with L-shaped shafts. The front side of the mounting frame is rotatably connected to a connecting shaft through a central shaft. The lower ends of the two connecting shafts are slidably connected to the surface of the pressure plate. One end of the two L-shaped shafts abuts against one side of the two connecting shafts. The adjustment plates and pressure plates are used to level the foam plastic.

[0009] Preferably, the pushing mechanism includes a first rotating shaft and a second rotating shaft rotatably connected together. The upper end of the first rotating shaft is slidably connected to the surface of the adjustment plate. A double-headed cylinder is fixedly installed inside the inner frame. The two drive ends of the double-headed cylinder are movably connected to one end of each of the two second rotating shafts. The first rotating shaft is rotatably mounted on the bracket.

[0010] Preferably, the adjustment plate is provided with a first slide groove, and a slider is rotatably connected to the end of the first rotating shaft away from the second rotating shaft, and the slider is slidably disposed in the first slide groove.

[0011] Preferably, the first rotating shaft is rotatably mounted on the bracket via a rotating shaft, and the slider and the second rotating shaft are respectively connected to the first rotating shaft at positions opposite to the rotating shaft.

[0012] Preferably, the upper surface of the pressure plate is provided with a second sliding groove, and the lower end of the connecting shaft is slidably connected to the second sliding groove via a sliding shaft, with the two L-shaped shafts abutting on the side of the two connecting shafts that are far apart from each other.

[0013] Preferably, three limiting shafts are fixedly connected to the back of each of the two adjustment plates, and the limiting shafts on both sides are movably inserted into the brackets on both sides.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. During the cutting process, the moving adjustment plates on both sides of the pushing mechanism bring the two adjustment plates closer together to clamp the foam plastic. The foam plastic is constrained and stabilized by direct clamping, preventing it from moving during the cutting process or from being moved by other operating structures.

[0016] 2. After cutting, the L-shaped shaft leaves the connecting shaft, and the pressure plate falls. The pressure plate can press the foam plastic from top to bottom. The pressure plate is adjacent to the mounting bracket. Under the pressing action of the pressure plate, the cut part is flattened, effectively preventing it from warping. The pressure plate is made of metal, which is convenient for pressing and can also play a role in cooling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front end structure of an online cutting device for polyethylene foam according to the present invention.

[0018] Figure 2 This is a schematic diagram of the rear end structure of an online cutting device for polyethylene foam proposed in this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of an online cutting device for polyethylene foam proposed in this utility model;

[0020] Figure 4 for Figure 3 A schematic diagram of the planar structure.

[0021] In the diagram: 1. Conveyor belt; 2. Bracket; 3. Mounting frame; 4. Laser cutting head; 5. Adjusting plate; 6. Pressure plate; 7. Inner frame; 8. Second slide rail; 9. Connecting shaft; 10. Limiting shaft; 11. First slide rail; 12. First rotating shaft; 13. Second rotating shaft; 14. Double-headed cylinder; 15. L-shaped shaft; 16. Slider; 17. Central shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Reference Figures 1-4 An online cutting device for polyethylene foam includes a support 2 and a conveyor belt 1 installed inside the support 2. A mounting frame 3 is fixedly installed on the conveyor belt 1. A laser cutting head 4 is slidably arranged on the inner wall of the mounting frame 3. Adjustment plates 5 are symmetrically slidably arranged on both sides below the mounting frame 3. Pushing mechanisms are symmetrically arranged on the support 2 below the mounting frame 3. The two pushing mechanisms are respectively connected to the two adjustment plates 5. An inner frame 7 is provided inside the conveyor belt 1. The two ends of the inner frame 7 are fixedly connected to the support 2.

[0025] A pressure plate 6 is also provided on the front side of the mounting bracket 3. The upper ends of the two adjusting plates 5 are fixedly connected to L-shaped shafts 15. The front side of the mounting bracket 3 is rotatably connected to a connecting shaft 9 via a central shaft 17. The lower ends of the two connecting shafts 9 are slidably connected to the surface of the pressure plate 6. One end of the two L-shaped shafts 15 abuts against one side of the two connecting shafts 9. The adjusting plates 5 and the pressure plate 6 are both used to level the foam plastic.

[0026] The pushing mechanism includes a first rotating shaft 12 and a second rotating shaft 13 rotatably connected together. The upper end of the first rotating shaft 12 is slidably connected to the surface of the adjusting plate 5. A double-headed cylinder 14 is fixedly installed inside the inner frame 7. The two drive ends of the double-headed cylinder 14 are movably connected to one end of each of the two second rotating shafts 13. The first rotating shaft 12 is rotatably mounted on the bracket 2. When the double-headed cylinder 14 extends or retracts through its drive ends, it pulls the second rotating shafts 13, which in turn pulls the first rotating shaft 12 to rotate. This, in turn, drives the adjusting plate 5 to move back and forth, thus achieving the pushing effect on the adjusting plate 5.

[0027] The adjusting plate 5 is provided with a first slide groove 11. A slider 16 is rotatably connected to the end of the first rotating shaft 12 away from the second rotating shaft 13. The slider 16 is slidably disposed in the first slide groove 11. When the first rotating shaft 12 rotates, it changes the horizontal position of the connection between the first rotating shaft 12 and the adjusting plate 5, thereby achieving a pushing effect on the adjusting plate 5. The change in the position of the upper end of the first rotating shaft 12 is achieved by the sliding of the slider 16.

[0028] The first rotating shaft 12 is rotatably mounted on the bracket 2 via a rotating shaft. The slider 16 and the second rotating shaft 13 are respectively connected to the first rotating shaft 12 at opposite sides of the rotating shaft. The rotating shaft makes the first rotating shaft 12 form a lever-like structure, and pushing the lower end of the first rotating shaft 12 achieves a pushing effect on the upper end.

[0029] The upper surface of the pressure plate 6 is provided with a second slide groove 8. The lower end of the connecting shaft 9 is slidably connected to the second slide groove 8 via a sliding shaft. Two L-shaped shafts 15 are abutted on the side of the two connecting shafts 9 that are far apart from each other. When the L-shaped shafts 15 move with the first slide groove 11, they will push the connecting shafts 9 to rotate, thereby lifting the pressure plate 6 through the connecting shafts 9. Conversely, under the action of gravity, it falls downward and presses against the upper surface of the foam plastic. The pressure plate 6 is set close to the mounting bracket 3 to flatten the foam plastic that has just been cut.

[0030] Three limiting shafts 10 are fixedly connected to the back of each of the two adjusting plates 5, and the limiting shafts 10 on both sides are movably inserted into the brackets 2 on both sides. The limiting shafts 10 play a role in limiting and stabilizing the adjusting plates 5. When the pushing mechanism pushes the adjusting plates 5 to move, it will drive the limiting shafts 10 to move accordingly. The adjusting plates 5 slide under the limiting action of the limiting shafts 10, which can maintain the stability of the movement direction.

[0031] The polyethylene foam plastic to be cut is placed on the conveyor belt 1 and transported towards one end of the mounting frame 3. As the conveyor belt 1 rotates continuously, the foam plastic plastic can be transported to the lower position of the mounting frame 3. A laser cutting head 4 is slidably installed on the lower surface of the mounting frame 3. The laser cutting head 4 slides back and forth to laser cut the plastic foam. The entire cutting process is controlled by a remote control device. The specific control principle and structure are existing technologies and will not be explained in detail here.

[0032] During the cutting process, the adjusting plates 5 on both sides of the pushing mechanism move closer together to clamp the foam plastic. This direct clamping method stabilizes the foam plastic and prevents it from moving during the cutting process or being affected by other operating structures. After cutting, the foam plastic continues to move under the action of the conveyor belt 1. When it reaches the position below the pressure plate 6, the adjusting plates 5, while clamping the foam plastic, push the connecting shaft 9 to rotate through the L-shaped shaft 15, thereby lifting the pressure plate 6. After cutting, the L-shaped shaft 15 moves away from the connecting shaft 9, and the pressure plate 6 falls. The pressure plate 6 can press the foam plastic from top to bottom. The pressure plate 6 is adjacent to the mounting frame 3. Under the pressing action of the pressure plate 6, the cut part is flattened, effectively preventing it from warping. The pressure plate 6 is made of metal, which facilitates pressing and also has a cooling effect. The relative ratio of the L-shaped shaft 15 and the connecting shaft 9 is designed according to the specific application.

[0033] The double-headed cylinder 14 in the pushing mechanism pushes the second rotating shaft 13 through the extension and retraction of the drive end. The second rotating shaft 13 pulls one end of the first rotating shaft 12. When the second rotating shaft 13 pushes the lower end of the first rotating shaft 12 upward, it will cause the other end of the first rotating shaft 12 to move downward. Then, the upper end of the first rotating shaft 12 pushes the adjustment plate 5 to move towards the center position, so that the two adjustment plates 5 move closer to each other to clamp and stabilize the foam plastic.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An online cutting device for polyethylene foam, comprising a support (2) and a conveyor belt (1) installed within the support (2), characterized in that, A mounting frame (3) is fixedly installed on the conveyor belt (1). A laser cutting head (4) is slidably arranged on the inner wall of the mounting frame (3). Adjustment plates (5) are symmetrically slidably arranged on both sides below the mounting frame (3). A pushing mechanism is symmetrically arranged on the support (2) below the mounting frame (3). The two pushing mechanisms are respectively connected to the two adjustment plates (5). An inner frame (7) is provided inside the conveyor belt (1). The two ends of the inner frame (7) are fixedly connected to the support (2). The mounting bracket (3) is also provided with a pressure plate (6) on the front side. The upper ends of the two adjustment plates (5) are fixedly connected with L-shaped shafts (15). The front side of the mounting bracket (3) is rotatably connected with a connecting shaft (9) through a central shaft (17). The lower ends of the two connecting shafts (9) are slidably connected to the surface of the pressure plate (6). One end of the two L-shaped shafts (15) abuts against one side of the two connecting shafts (9). The adjustment plate (5) and the pressure plate (6) are both used to level the foam plastic.

2. The online cutting device for polyethylene foam according to claim 1, characterized in that, The pushing mechanism includes a first rotating shaft (12) and a second rotating shaft (13) rotatably connected together. The upper end of the first rotating shaft (12) is slidably connected to the surface of the adjustment plate (5). A double-headed cylinder (14) is fixedly installed inside the inner frame (7). The two driving ends of the double-headed cylinder (14) are movably connected to one end of the two second rotating shafts (13) respectively. The first rotating shaft (12) is rotatably installed on the bracket (2).

3. The online cutting device for polyethylene foam according to claim 2, characterized in that, The adjustment plate (5) is provided with a first slide groove (11), and a slider (16) is rotatably connected to one end of the first rotating shaft (12) away from the second rotating shaft (13). The slider (16) is slidably disposed in the first slide groove (11).

4. The online cutting device for polyethylene foam according to claim 3, characterized in that, The first rotating shaft (12) is rotatably mounted on the bracket (2) via a rotating shaft, and the slider (16) and the second rotating shaft (13) are respectively connected to the two sides of the first rotating shaft (12) relative to the rotating shaft.

5. The online cutting device for polyethylene foam according to claim 1, characterized in that, The upper surface of the pressure plate (6) is provided with a second slide groove (8), and the lower end of the connecting shaft (9) is slidably connected to the second slide groove (8) through a slide shaft. The two L-shaped shafts (15) are pressed against the two connecting shafts (9) on the side away from each other.

6. The online cutting device for polyethylene foam according to claim 1, characterized in that, Three limiting shafts (10) are fixedly connected to the back of both adjustment plates (5), and the limiting shafts (10) on both sides are movably inserted into the brackets (2) on both sides.

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