Injection molding excess material flattening device and method

Abstract

The invention discloses an injection molding excess material flattening device and method in the technical field of plastic treatment.The injection molding excess material flattening device comprises a bottom plate, a conveying belt used for conveying is arranged on the bottom plate, a supporting rod is fixedly connected to the bottom plate, the injection molding excess material flattening device further comprises an extrusion roller, rotating shafts are fixedly connected to the two ends of the extrusion roller, and the extrusion roller is rotationally connected to the supporting rod through the rotating shafts; and a supporting roller used for supporting and extruding is arranged at the position, under the extruding roller, in the conveying belt, a motor used for driving a rotating shaft to rotate is arranged on a supporting rod, and a heating device is arranged on the extruding roller. According to the technology, plastic can be heated during extruding, and the plastic can be softened and flattened more easily.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a device and method for flattening excess injection molding material. Background Art

[0002] Injection molding waste is usually processed by flattening to reduce the floor space and facilitate subsequent recycling. The existing methods generally use rollers for extrusion or reciprocating punches for direct flattening. Although these two methods can achieve the flattening effect, due to the plasticity of plastic, the plastic is prone to a small rebound after flattening, which affects the extrusion effect.

[0003] Based on this, the present invention designs an injection molding excess material flattening device and method to solve the above-mentioned problem. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for flattening plastic waste. The technology can heat the plastic during extrusion to soften the plastic and make it easier to flatten.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection molding waste material flattening device, comprising a base plate, a conveyor belt for conveying is arranged on the base plate, a support rod is fixedly connected to the base plate, and also comprises an extrusion roller, a rotating shaft is fixedly connected to both ends of the extrusion roller, the extrusion roller is rotatably connected to the support rod through the rotating shaft, a support roller for supporting extrusion is arranged in the conveyor belt directly below the extrusion roller, a motor for driving the rotating shaft to rotate is arranged on the support rod, and a heating device is arranged on the extrusion roller.

[0006] As a further solution of the present invention, the heating device comprises a heat-reversing hood arranged inside the extrusion roller, and a heating tube for heating is arranged inside the heat-reversing hood.

[0007] As a further solution of the present invention, the heating device also includes a preheating device, which includes a heating groove in an annular array opened on the extrusion roller, an extrusion rod is slidably connected in the heating groove, and the extrusion rod is also provided with a plurality of annular arrays, each of which is arranged in the heating groove, and the inner wall of the extrusion roller is provided with limit plates for limiting the extrusion rod at both sides of the extrusion rod.

[0008] As a further solution of the present invention, a roller is rotatably connected to the extrusion rod, a fixed rod is rotatably connected inside the rotating shaft, one end of the fixed rod located outside the rotating shaft is fixedly connected to the support rod, one end of the fixed rod located inside the extrusion roller is fixedly connected to a guide frame, the roller and the extrusion rod are rollingly connected, and the guide frame is a magnetic material.

[0009] As a further solution of the present invention, the outer wall of the extrusion roller is provided with a heat-insulating cover for heat preservation, the heat-insulating cover is provided with a feed port for feeding, a feed hopper for loading materials is provided at the position of the feed port on the heat-insulating cover, an oblique opening is provided at one end of the heat-insulating cover close to the feed hopper, and a baffle is provided at one end of the heat-insulating cover away from the feed hopper.

[0010] As a further solution of the present invention, the bottom plate is provided with a shovel plate at the end of the conveyor belt for shoveling off the plastic stuck on the conveyor belt, and a collection box for borrowing materials is provided on the bottom plate at the end of the shovel plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This technology can heat the plastic during the flattening process to promote the softening of the plastic, making it easier to flatten, greatly improving the efficiency and effect of the flattening.

[0012] The heating device of the present technology does not need to use too many heating devices or use heating devices with too much power consumption. It is only necessary to use a heating tube to directly heat the extrusion position. Moreover, the extrusion roller has an overall temperature after heating, so that the plastic can be preheated at the position where the extrusion roller is not extruding. No separate heating device is required for preheating. The overall structure is simple, and while further improving the heating effect, it will not increase the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from a side perspective; Figure 3 This is a schematic diagram of the internal structure of the extrusion roller of the present invention; Figure 4 It is a schematic diagram of the enlarged structure of the internal structure of the extrusion roller of the present invention; Figure 5 It is a schematic diagram of the partial explosion structure of the extrusion roller of the present invention.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 01. Bottom plate; 02. Support rod; 03. Insulation cover; 04. Rotating shaft; 05. Motor; 06. Fixed rod; 07. Feed hopper; 08. Conveyor belt; 09. Shovel plate; 10. Collecting box; 11. Baffle; 12. Extrusion roller; 13. Heating trough; 14. Extrusion rod; 15. Roller; 16. Feed port; 17. Guide frame; 18. Anti-heat cover; 19. Heating tube; 20. Support roller; 21. Bevel; 22. Limit plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1 to 5 The present invention provides a technical solution: a device for flattening injection molding waste material, comprising a bottom plate 01, a conveyor belt 08 for conveying is arranged on the bottom plate 01, a support rod 02 is fixedly connected to the bottom plate 01, and also comprises an extrusion roller 12, both ends of the extrusion roller 12 are fixedly connected with a rotating shaft 04, the extrusion roller 12 is rotatably connected to the support rod 02 through the rotating shaft 04, a support roller 20 for supporting extrusion is arranged in the conveyor belt 08 directly below the extrusion roller 12, a motor 05 for driving the rotating shaft 04 to rotate is arranged on the support rod 02, and a heating device is arranged on the extrusion roller 12.

[0018] The motor 05 drives the rotating shaft 04 to rotate, and the rotation of the rotating shaft 04 drives the extrusion roller 12 to rotate. When the extrusion roller 12 rotates, it cooperates with the support roller 20 to extrude the remaining plastic material to achieve flattening. During use, the heating device heats the heating tank 13 to promote the melting of the plastic, thereby promoting the flattening process.

[0019] The heating device comprises a heat-reversing shield 18 disposed in the squeezing roller 12 , and a heating pipe 19 for heating is disposed in the heat-reversing shield 18 .

[0020] Since the power consumption of the heating device is relatively high, especially in winter, and the extrusion device only needs to drive the motor 05 to rotate the extrusion roller 12, and the power consumption is relatively low, in order to reduce the use cost of the heating device, only one heating tube 19 can be used to directly heat the pressurized position between the extrusion roller 12 and the support roller 20, so that the plastic can be heated to achieve the effect of softening the plastic.

[0021] The heating device also includes a preheating device, which includes a heating groove 13 in an annular array opened on the extrusion roller 12, and an extrusion rod 14 is slidably connected in the heating groove 13. The extrusion rod 14 is also arranged in a ring array. There are multiple extrusion rods 14, each of which is arranged in the heating groove 13. The inner wall of the extrusion roller 12 is located on both sides of the extrusion rod 14 and is provided with limiting plates 22 for limiting the extrusion rod 14.

[0022] A roller 15 is rotatably connected to the extrusion rod 14, a fixed rod 06 is rotatably connected inside the rotating shaft 04, one end of the fixed rod 06 located outside the rotating shaft 04 is fixedly connected to the support rod 02, and one end of the fixed rod 06 located inside the extrusion roller 12 is fixedly connected to a guide frame 17, the roller 15 and the extrusion rod 14 are rollingly connected, and the guide frame 17 is a magnetic material.

[0023] The extrusion roller 12 is heated by the heating tube 19. When the extrusion roller 12 is located at the heating position of the heating tube 19 and rotates away, the heat will not be completely volatilized at the first time. Therefore, as the extrusion roller 12 rotates, the plastic is added into the heating tank 13. As the heating tank 13 rotates, the preheating energy of the extrusion roller 12 heats the plastic in the heating tank 13 until the extrusion roller 12 drives the heating tank 13 to rotate to the extrusion position, at which time the plastic falls from the heating tank 13 onto the conveyor belt 08.

[0024] The outer wall of the extrusion roller 12 is provided with a heat-insulating cover 03 for heat preservation, the heat-insulating cover 03 is provided with a feed port 16 for feeding, a feed hopper 07 for loading materials is provided at the position of the feed port 16 on the heat-insulating cover 03, an oblique opening 21 is provided at one end of the heat-insulating cover 03 close to the feed hopper 07, and a baffle 11 is provided at one end of the heat-insulating cover 03 away from the feed hopper 07.

[0025] like Figure 4, add the expected plastic into the feed hopper 07, and as the extrusion roller 12 rotates (clockwise in the figure), the remaining plastic will enter the heating tank 13 through the feed port 16, until it rotates to a position close to the support roller 20 and is extruded by the extrusion roller 12. Since an extrusion rod 14 is provided, when the remaining plastic enters the heating tank 13, the remaining plastic will only remain in the heating tank 13, and will be continuously heated and softened by the extrusion roller 12 and the extrusion rod 14 which has a temperature after being heated by the heating tube 19. There is a certain travel distance from the feed hopper 07 to the position where the plastic is extruded by the support roller 20, and there is enough time for softening. Therefore, there is no need to reduce the rotation of the extrusion roller 12, so the plastic is flattened faster, and at the same time The plastic is heated and is easier to be flattened, thus greatly improving the efficiency; after the plastic enters the heating groove 13 through the feed port 16, as the extrusion roller 12 rotates, when it moves to a position close to the baffle 11, the extrusion rod 14 will gradually extend from the heating groove 13, pushing the plastic out of the heating groove 13 to prevent residue, and at the same time, when it moves to the position of the support roller 20, the guide frame 17 presses against the extrusion rod 14 through the roller 15, so the extrusion rod 14 and the outer wall of the extrusion roller 12 form a complete arc shape, so that the plastic can be squeezed to achieve the flattening function, and since the guide frame 17 is a magnetic material, the roller 15 can be sucked on the guide frame 17 and will not be separated from the guide frame 17 when the roller 15 rotates along the track of the guide frame 17; In addition, since a heat preservation cover 03 is provided and wrapped around the outer wall of the extrusion roller 12, it can firstly achieve a heat preservation effect and reduce the heat loss of the extrusion roller 12, thereby reducing the power consumption of the heating tube 19. At the same time, it can block the opening of the heating groove 13 and prevent the plastic from spilling out of the heating groove 13 when the extrusion roller 12 has not rotated to the baffle 11 position.

[0026] The bottom plate 01 is located at the end of the conveyor belt 08 and is provided with a shovel plate 09 for shoveling off the plastic stuck on the conveyor belt 08 . The bottom plate 01 is located at the end of the shovel plate 09 and is provided with a collecting box 10 for borrowing materials.

[0027] When the plastic falls onto the conveyor belt 08 as the extrusion roller 12 rotates to the baffle 11 position, it will be sent to the space between the extrusion roller 12 and the support roller 20 for extrusion through the rotation of the conveyor belt 08. After the extrusion is completed, it will continue to be transported to the shovel plate 09 position through the conveyor belt 08, and then it will be scooped up by the shovel plate 09 and fall into the collection box 10 for collection. During the process, the bevel 21 can prevent the plastic from sticking to the outer wall of the extrusion roller 12.

[0028] The specific steps of a method for using an injection molding excess material flattening device are as follows: Step 1: The motor 05 drives the rotating shaft 04 to rotate, and the rotation of the rotating shaft 04 drives the squeezing roller 12 to rotate. When the squeezing roller 12 rotates, it cooperates with the supporting roller 20 to squeeze the plastic residue to achieve flattening; Step 2: After the plastic waste is added into the extrusion roller 12, it is heated by the heating tube 19. The heating tube 19 heats the entire extrusion roller 12. Since the heating tube 19 is arranged near the support roller 20, the support roller 20 at the position of the extrusion roller 12 can be directly heated and the temperature is the highest relative to other positions of the extrusion roller 12, thereby heating the plastic, making the plastic softer and easier to be flattened; Step 3: As the extrusion roller 12 rotates, the plastic in the heating tank 13 will also be preheated by the residual heat at other positions of the extrusion roller 12, thereby accelerating the softening of the plastic.

[0029] The embodiments of the present invention described above are only examples, and a person skilled in the art of the present invention may make various modifications or derive other equivalent embodiments. Therefore, the present invention is not limited to the embodiments mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined according to the technical ideas of the attached invention claims. Furthermore, it should be understood that the present invention includes the ideas of the present invention defined by the attached invention claims and all variant technical solutions, equivalent technical solutions and alternative technical solutions within its scope.

Claims

1. An injection molding waste material flattening device, comprising a bottom plate (01), on which a conveyor belt (08) for conveying is arranged, characterized in that: The bottom plate (01) is fixedly connected to a support rod (02) and also includes an extrusion roller (12). The two ends of the extrusion roller (12) are fixedly connected to a rotating shaft (04). The extrusion roller (12) is rotatably connected to the support rod (02) via the rotating shaft (04). A support roller (20) for supporting extrusion is provided in the conveyor belt (08) directly below the extrusion roller (12). A motor (05) for driving the rotating shaft (04) to rotate is provided on the support rod (02). A heating device is provided on the extrusion roller (12).

2. The device for flattening excess injection molding material according to claim 1, characterized in that: The heating device comprises a reverse heat shield (18) arranged inside the extrusion roller (12), wherein a heating pipe (19) for heating is arranged inside the reverse heat shield (18).

3. The device for flattening excess injection molding material according to claim 2, characterized in that: The heating device also includes a preheating device, the preheating device including a heating groove (13) arranged in an annular array on the extrusion roller (12), an extrusion rod (14) being slidably connected in the heating groove (13), a plurality of extrusion rods (14) also being arranged in an annular array, each of which is arranged in the heating groove (13), and a limiting plate (22) for limiting the extrusion rod (14) is arranged on the inner wall of the extrusion roller (12) at positions on both sides of the extrusion rod (14).

4. The device for flattening excess injection molding material according to claim 3, characterized in that: A roller (15) is rotatably connected to the extrusion rod (14), a fixed rod (06) is rotatably connected inside the rotating shaft (04), one end of the fixed rod (06) located outside the rotating shaft (04) is fixedly connected to the support rod (02), one end of the fixed rod (06) located inside the extrusion roller (12) is fixedly connected to a guide frame (17), the roller (15) and the extrusion rod (14) are rollingly connected, and the guide frame (17) is made of magnetic material.

5. The device for flattening excess injection molding material according to claim 1, characterized in that: The outer wall of the extrusion roller (12) is provided with a heat-insulating cover (03) for heat preservation, the heat-insulating cover (03) is provided with a feed port (16) for feeding materials, the heat-insulating cover (03) is provided with a feed hopper (07) for loading materials at the position of the feed port (16), the heat-insulating cover (03) is provided with an oblique opening (21) at one end close to the feed hopper (07), and the heat-insulating cover (03) is provided with a baffle (11) at one end away from the feed hopper (07).

6. The device for flattening excess injection molding material according to claim 1, characterized in that: The bottom plate (01) is provided with a shovel plate (09) at the end of the conveyor belt (08) for shoveling off plastic sticking to the conveyor belt (08), and a collection box (10) for borrowing materials is provided at the end of the shovel plate (09) on the bottom plate (01).

7. A method for using an injection molding waste material flattening device, applicable to the injection molding waste material flattening device according to claim 4, characterized in that: The specific steps of this method are as follows: Step 1: The motor (05) drives the rotating shaft (04) to rotate, and the rotation of the rotating shaft (04) drives the squeezing roller (12) to rotate. When the squeezing roller (12) rotates, it cooperates with the supporting roller (20) to squeeze the plastic residue to achieve flattening; Step 2: After the plastic residue is added into the extrusion roller (12), it is heated by the heating tube (19). The heating tube (19) heats the entire extrusion roller (12). Since the heating tube (19) is arranged at a position close to the support roller (20), the support roller (20) at the position of the extrusion roller (12) can be directly heated and has the highest temperature relative to other positions of the extrusion roller (12), thereby heating the plastic and making it softer and easier to be flattened. Step 3: As the extrusion roller (12) rotates, the plastic in the heating tank (13) is also preheated by the residual heat at other positions of the extrusion roller (12), thereby accelerating the softening of the plastic.

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