A method and device for forming plastic state material

Abstract

The present application relates to a molding method and equipment for plastic state materials, and to the field of injection molding technology. The molding equipment for plastic state materials includes a machine body, and the machine body is provided with a feed port and a discharge port. The feed port is provided with a feed hopper, and the discharge port is provided with a nozzle. A heating device is provided in the machine body, a crushing device is provided in the feed hopper, and a screening device is provided below the crushing device. The feed hopper is connected to a screening chamber, and a pushing device is provided in the feed hopper for pushing the raw materials above the screening device into the screening chamber. The present application has the effect of ensuring that the size of the raw materials entering the machine body meets the injection molding requirements, thereby avoiding the uneven heating phenomenon caused by the large size of the raw materials.

Description

Technical Field

[0001] The present application relates to the field of injection molding technology, and in particular to a molding method and equipment for plastic state materials. Background Art

[0002] Injection molding technology occupies an important position in modern manufacturing and is widely used in many industries such as automobiles, electronics, and home appliances. Injection molding machines are commonly used molding equipment in injection molding operations. They can heat plastic materials to make them molten. After that, the injection molding machine applies high pressure to the molten plastic material so that it is ejected through a high-pressure nozzle and fills the mold cavity to wait for solidification and molding.

[0003] The inlet of the injection molding machine is equipped with a feed hopper. When feeding, the raw materials are usually put into the feed hopper manually or by conveyor belt, and the raw materials enter the injection molding machine through the feed hopper for heating. Due to the different sizes of raw materials, there are many large rubber blocks. After these rubber blocks enter the injection molding machine, they are prone to uneven heating due to their large size, resulting in dark blocks, missing blocks and other problems in the final molded product. At the same time, it is also easy to cause blockage in the internal pipeline of the injection molding machine. At this time, the machine has to be shut down for maintenance, affecting the working efficiency of the injection molding machine. Summary of the invention

[0004] In order to improve the problems existing in the above-mentioned technology, the present application provides a molding method and equipment for plastic state materials.

[0005] The present application provides a method and device for forming a plastic material using the following technical solutions:

[0006] A forming device for plastic state material comprises a machine body, wherein a feed port and a discharge port are provided on the machine body, a feed hopper is arranged at the feed port, a nozzle is arranged at the discharge port, a heating device is arranged in the machine body, a crushing device is arranged in the feed hopper, a screening device is arranged below the crushing device, a screening chamber is connected to the feed hopper, and a pushing device is arranged in the feed hopper for pushing raw materials above the screening device into the screening chamber.

[0007] By adopting the above technical solution, when the raw material is subjected to injection molding, the raw material is put into the feed hopper, and the crushing device operates to crush the raw material, thereby refining the raw material. After the crushing process, the raw material falls to the screening device, and the screening device screens the raw material. The raw material with a larger size is intercepted by the screening device. The pushing device operates to push the raw material on the screening device into the screening chamber, and the screening chamber stores this part of the raw material to ensure the subsequent normal operation of the screening device. The raw material whose size meets the requirements enters the machine body through the screening device, and is then extruded under the joint action of the heating device and the nozzle. The present application crushes the raw material through the crushing device, so that the size of the raw material is refined. With the cooperation of the screening device, it can ensure that the size of the raw material entering the machine body meets the injection molding requirements, thereby avoiding the uneven heating phenomenon caused by the large size of the raw material.

[0008] Optionally, the screening device includes a screening plate arranged in the feed hopper, the screening plate is provided with screening holes for raw materials to pass through; the pushing device includes a pushing plate arranged in the feed hopper, the feed hopper is provided with a first driving member, and the first driving member is used to drive the pushing plate to move so as to push the raw materials on the screening plate into the screening chamber.

[0009] By adopting the above technical solution, the screening holes can be flexibly selected according to the actual injection molding requirements. The raw materials fall onto the screening plate after being crushed by the crushing device, and then enter the machine body through the screening holes. The size of the raw materials can be selected by controlling the size of the screening holes to ensure that the size of the raw materials entering the machine body meets the injection molding requirements. After the equipment has been in operation for a period of time, when there is a lot of raw materials falling on the screening plate, the first driving member operates to drive the push plate to move, and the push plate pushes the raw materials accumulated on the screening plate into the screening chamber, thereby avoiding a large amount of raw materials accumulating on the screening plate, which makes it difficult for the raw materials to enter the machine body through the screening plate later.

[0010] Optionally, a cleaning brush is provided on the push plate, and the bristles of the cleaning brush can be inserted into the screening holes.

[0011] By adopting the above technical solution, the push plate drives the cleaning brush to move synchronously when it moves. The bristles of the cleaning brush can be inserted into the screening holes to clean the screening holes, thereby preventing the raw materials from being blocked in the screening holes, which in turn causes the screening plate to be blocked. The raw materials subsequently fall on the screening plate and are difficult to enter the machine body.

[0012] Optionally, a blowing hole inclined downward is provided on the pushing plate, and a fan is arranged on the pushing plate.

[0013] By adopting the above technical solution, when the first driving member operates to drive the push plate to move, the fan operates to supply air to the blowing holes, and the blowing holes supply wind inclined downward, thereby the screening plate and the screening holes can be sufficiently cleaned. The method of pushing the raw materials by wind force can also avoid direct contact between the push plate and the screening plate, thereby avoiding wear of the screening plate or the push plate.

[0014] Optionally, a second driving member is provided in the screening chamber, and the second driving member is used to drive the screening plate to move in a direction away from or close to the screening chamber, and the push plate and the first driving member are both provided in the screening chamber.

[0015] By adopting the above technical solution, when a large amount of raw materials fall on the screening plate and the screening plate needs to be processed by the push plate, the second driving member operates to drive the screening plate to move in the direction close to the screening chamber until the screening plate enters the screening chamber. After that, the first driving member drives the push plate to move to push the raw materials accumulated on the screening plate into the screening chamber, and the cleaning work of the screening plate by the push plate is completed. Through the cooperation of various components in the above process, the operation of the screening plate being located below the crushing device to screen the raw materials and the operation of the push plate to clean the screening plate can be distinguished, and the two operations are performed in different spaces respectively, thereby preventing the raw materials pushed into the screening chamber by the push plate from accidentally entering the machine body.

[0016] Optionally, a partition plate for closing the screening chamber is provided on the screening plate.

[0017] By adopting the above technical solution, the operation of the second driving member drives the screening plate to move into the screening chamber, and the partition plate moves synchronously with the screening plate. The partition plate can be moved to close the screening chamber, and the pushing plate can be operated subsequently, thereby further preventing the raw materials from accidentally entering the machine body during the operation of the pushing plate to push the raw materials into the screening chamber.

[0018] Optionally, the partition plate is provided with a ball capable of contacting the side wall of the feed hopper.

[0019] By adopting the above technical solution, when the partition plate follows the movement of the screening plate, the partition plate contacts the side wall of the feed hopper through the ball bearings, thereby achieving the closure of the screening chamber. The setting of the ball bearings can improve the flexibility of the partition plate during movement and reduce the friction between the partition plate and the side wall of the feed hopper.

[0020] Optionally, a feeding pipe is provided in the screening chamber, one end of the feeding pipe is connected to the screening chamber, and the other end is connected to the space in the feed hopper above the crushing device, and a feeding auger is provided in the feeding pipe.

[0021] By adopting the above technical scheme, raw materials whose sizes do not meet the injection molding requirements, that is, raw materials with larger sizes, enter the screening chamber under the joint action of the screening device and the pushing device. The feeding auger rotates to transport this part of the raw materials to the feed hopper through the feeding pipe. This part of the raw materials will be crushed by the crushing device for reuse, and the utilization rate of the raw materials is improved.

[0022] A method for forming a material in a plastic state, using the above-mentioned forming device for a material in a plastic state, comprises the following steps:

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The raw materials are crushed by the crushing device, so that the size of the raw materials is refined. With the cooperation of the screening device, it can ensure that the size of the raw materials entering the machine body meets the injection molding requirements, thereby avoiding uneven heating caused by the large size of the raw materials;

[0025] 2. The screening holes can be flexibly selected according to the actual injection molding requirements. The raw materials fall onto the screening plate after being crushed by the crushing device, and then enter the machine body through the screening holes. The size of the raw materials can be selected by controlling the size of the screening holes to ensure that the size of the raw materials entering the machine body meets the injection molding requirements. After the equipment has been running for a period of time, when a large amount of raw materials fall on the screening plate, the first driving member operates to drive the push plate to move, and the push plate pushes the raw materials accumulated on the screening plate into the screening chamber, thereby avoiding a large amount of raw materials accumulating on the screening plate, which makes it difficult for the raw materials to pass through the screening plate and enter the machine body later;

[0026] 3. Raw materials whose size does not meet the requirements of injection molding, that is, raw materials with larger sizes, enter the screening chamber under the joint action of the screening device and the pushing device. The feeding auger rotates to transport this part of the raw materials through the feeding pipe to the feed hopper. This part of the raw materials will be crushed by the crushing device for reuse, and the utilization rate of the raw materials is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a molding device for a plastic state material in Example 1 of the present application;

[0028] Figure 2 is a cut-away side view of the feed hopper in Example 1 of the present application;

[0029] Figure 3 is a schematic cross-sectional view of the feed hopper in Example 1 of the present application;

[0030] Figure 4 is a schematic diagram of the screening plate in Example 1 of the present application;

[0031] Figure 5 It is a schematic diagram of the push plate in Example 2 of the present application.

[0032] Explanation of the accompanying reference numerals: 1. Machine body; 2. Feed hopper; 3. Nozzle; 4. Crushing device; 41. Crushing roller; 5. Screening device; 51. Screening plate; 6. Screening chamber; 7. Pushing device; 71. Pushing plate; 8. Screening holes; 9. Cleaning brush; 10. Fan; 11. Telescopic rod; 12. Screw rod; 13. Partition plate; 14. Ball bearing; 15. Feeding pipe; 16. Feeding auger; 17. Third motor; 18. Connecting plate. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail. Example 1

[0034] Embodiment 1 of the present application discloses a molding device for plastic state materials. Figure 1 and Figure 2 The molding equipment of plastic state material includes a machine body 1, which is provided with a feed port and a discharge port, a feed hopper 2 is provided at the feed port, a nozzle 3 is provided at the discharge port, a heating device is provided in the machine body 1, and a crushing device 4 is provided in the feed hopper 2; the raw material is put into the feed hopper 2, and the crushing device 4 operates to crush the raw material, thereby refining the raw material. A screening device 5 is provided below the crushing device 4, and a screening chamber 6 is connected to the feed hopper 2. A pushing device 7 is provided in the feed hopper 2 to push the raw material above the screening device 5 into the screening chamber 6, and the raw material with a larger size is intercepted by the screening device 5, and the pushing device 7 operates to push the raw material on the screening device 5 into the screening chamber 6.

[0035] Reference Figure 1 and Figure 2 In the embodiment of the present application, the crushing device 4 is selected to be two opposite crushing rollers 41, and a first motor (not shown in the figure) is installed on the feed hopper 2 to drive the two crushing rollers 41 to rotate. The raw material to be injection molded enters between the two crushing rollers 41 through the feed hopper 2, and the first motor drives the two crushing rollers 41 to rotate. The two crushing rollers 41 rotate to crush the raw material, thereby refining the raw material.

[0036] In the embodiment of the present application, the heating device is selected to be a heating pipe network (not shown in the figure) installed on the inner wall of the body 1, a power supply system (not shown in the figure) for supplying power to the heating official website is installed on the body 1, and the nozzle 3 is a high-pressure nozzle 3.

[0037] Reference Figure 3 and Figure 4The screening device 5 includes a screening plate 51 arranged in the feed hopper 2. The screening plate 51 is horizontally arranged and located directly below the two crushing rollers 41. The screening plate 51 is provided with screening holes 8 for the raw materials to pass through. After being processed by the crushing rollers 41, the raw materials fall onto the screening plate 51 and then enter the machine body 1 through the screening holes 8. The size of the raw materials can be selected by controlling the size of the screening holes 8.

[0038] Reference Figure 2 and Figure 3 A second driving member is provided in the screening chamber 6, and the second driving member is used to drive the screening plate 51 to move in a direction away from or close to the screening chamber 6. The pushing device 7 includes a pushing plate 71 arranged in the screening chamber 6. A first driving member is provided in the screening chamber 6, and the first driving member is used to drive the pushing plate 71 to move so as to push the raw materials on the screening plate 51 into the screening chamber 6.

[0039] Reference Figure 2 and Figure 3 In the embodiment of the present application, the second driving member is selected as an electrically controlled telescopic rod 11, which is horizontally arranged and mounted on the screening chamber 6, and the movable end of the telescopic rod 11 is fixedly connected to the screening plate 51. The screening plate 51 is driven to move horizontally by the telescopic activity of the movable end of the telescopic rod 11, and the screening plate 51 can be moved into the screening chamber 6 or below the two crushing rollers 41. The first driving member is selected as a screw rod 12, which is driven to rotate by the second motor, and the screw rod 12 is perpendicular to the telescopic rod 11 and fixed to the top of the screening chamber 6. A connecting rod is fixed on the push plate 71, and the connecting rod is coaxially fixedly connected with the screw rod 12 nut of the screw rod 12. The operation of the second motor drives the screw rod 12 to rotate, and the rotation of the screw rod 12 drives the connecting rod to move horizontally, and the push plate 71 moves following the connecting rod to push the raw materials on the screening plate 51 into the screening chamber 6.

[0040] Reference Figure 3 The push plate 71 is hollow inside, and a fan 10 is installed on the push plate 71. The air outlet of the fan 10 is connected to the internal space of the push plate 71. The bottom of the push plate 71 is also provided with a plurality of blowing holes (not shown in the figure) inclined downward. The blowing holes are inclined in the direction toward the screening plate 51, and each blowing hole is connected to the internal space of the push plate 71. During the movement of the push plate 71, the fan 10 operates to send air to the blowing holes, and the blowing holes send out wind inclined downward. The wind sent out by the blowing holes is vertical to the screening plate 51, so that the screening plate 51 and the screening holes 8 can be fully cleaned.

[0041] Reference Figure 3 and Figure 4The screening plate 51 is fixed with a partition plate 13 for closing the screening chamber 6, and the partition plate 13 is rotatably provided with a ball 14 that can contact the side wall of the feed hopper 2. During the movement of the screening plate 51, the partition plate 13 moves synchronously, and the partition plate 13 contacts the side wall of the feed hopper 2 through the ball 14. The partition plate 13 can be moved to close the screening chamber 6, and the push plate 71 can be operated subsequently, thereby preventing the raw materials from accidentally entering the machine body 1 during the operation of the push plate 71 to push the raw materials into the screening chamber 6.

[0042] Reference Figure 2 and Figure 3 A feeding pipe 15 is installed in the screening chamber 6, one end of the feeding pipe 15 is connected to the bottom of the screening chamber 6, and the other end is connected to the space above the crushing roller 41 in the feed hopper 2. A feeding auger 16 is rotatably connected in the feeding pipe 15, and a third motor 17 is installed on the screening chamber 6. The central axis of the feeding auger 16 is coaxially fixedly connected with the output shaft of the third motor 17, and the feeding auger 16 is driven to rotate by the rotation of the output shaft of the third motor 17; raw materials whose size does not meet the injection molding requirements, that is, raw materials with larger sizes, enter the screening chamber 6 under the joint action of the screening device 5 and the pushing device 7. The feeding auger 16 rotates to transport this part of the raw materials to the feed hopper 2 through the feeding pipe 15, and this part of the raw materials will be crushed by the crushing device 4 for reuse.

[0043] The implementation principle of a molding device for plastic state materials in Example 1 of the present application is as follows: when the raw material is subjected to injection molding, the raw material is put into the feed hopper 2, and the crushing roller 41 rotates to crush the raw material, thereby refining the raw material. After being crushed, the raw material falls onto the screening plate 51, and then enters the machine body 1 through the screening hole 8. The size of the raw material is selected by controlling the size of the screening hole 8, ensuring that the size of the raw material entering the machine body 1 meets the injection molding requirements. The larger raw material is intercepted by the screening plate 51, and the push plate 71 operates to push the raw material on the screening plate 51 into the screening chamber 6, which stores this part of the raw material to ensure the subsequent normal operation of the screening device 5. The present application crushes the raw material through the crushing device 4, so that the size of the raw material is refined. With the cooperation of the screening device 5, it can be ensured that the size of the raw material entering the machine body 1 meets the injection molding requirements, thereby avoiding the uneven heating phenomenon caused by the larger size of the raw material. Example 2

[0044] The difference between Example 2 of the present application and Example 1 is that: Figure 5 The push plate 71 is a solid plate, and a cleaning brush 9 is installed at the bottom of the push plate 71 , and the bristles of the cleaning brush 9 can be inserted into the screening holes 8 .

[0045] The implementation principle of Example 2 of the present application is: when the push plate 71 moves, it drives the cleaning brush 9 to move synchronously. The bristles of the cleaning brush 9 can be inserted into the screening holes 8 to clean the screening holes 8, thereby preventing the raw materials from being blocked in the screening holes 8, which in turn causes the screening plate 51 to be blocked. The raw materials subsequently fall on the screening plate 51 and are difficult to enter the machine body 1. Example 3

[0046] Embodiment 3 of the present application discloses a method for forming a material in a plastic state, using a forming device for a material in a plastic state in Embodiment 1, comprising the following steps:

[0047] S1: The raw material is put into the feed hopper 2, and the crushing roller 41 rotates to crush the raw material and refine the raw material;

[0048] S2: The raw material falls onto the screening plate 51 for screening;

[0049] S3: Raw materials with the required size enter the machine body 1 through the screening plate 51;

[0050] S4: The heating pipe network heats the raw materials to form a molten state;

[0051] S5: The nozzle 3 extrude the raw material in a molten state.

[0052] In the embodiment of the present application, in step S2, the raw materials after crushing fall onto the screening plate 51. After the equipment has been operating for a period of time, when a large amount of raw materials fall on the screening plate 51, the telescopic rod 11 operates to drive the screening plate 51 to move into the screening chamber 6. The second motor then drives the screw 12 to rotate, and the pushing plate 71 moves to push the raw materials accumulated on the screening plate 51 into the screening chamber 6, thereby avoiding a large amount of raw materials from accumulating on the screening plate 51, which makes it difficult for the raw materials to pass through the screening plate 51 and enter the machine body 1 later.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A molding device for plastic state materials, characterized in that:

1. A machine body (1) comprising a feed port and a discharge port, a feed hopper (2) being arranged at the feed port, a nozzle (3) being arranged at the discharge port, a heating device being arranged in the machine body (1), a crushing device (4) being arranged in the feed hopper (2), a screening device (5) being arranged below the crushing device (4), a screening chamber (6) being connected to the feed hopper (2), a pushing device (7) being arranged in the feed hopper (2) for pushing raw materials above the screening device (5) into the screening chamber (6); the screening device (5) comprising a screening plate (51) arranged in the feed hopper (2), the screening plate (51) being provided with screening holes (8) for raw materials to pass through; the pushing device ( 7) comprises a push plate (71) arranged in the feed hopper (2), the feed hopper (2) is provided with a first driving member, the first driving member is used to drive the push plate (71) to move so as to push the raw materials on the screening plate (51) into the screening chamber (6); the screening chamber (6) is provided with a second driving member, the second driving member is used to drive the screening plate (51) to move in a direction away from or close to the screening chamber (6), the push plate (71) and the first driving member are both arranged in the screening chamber (6); the screening plate (51) is provided with a partition plate (13) for closing the screening chamber (6), and the partition plate (13) is provided with a ball (14) capable of contacting the side wall of the feed hopper (2).

2. A molding device for plastic state material according to claim 1, characterized in that: The push plate (71) is provided with a cleaning brush (9), and the bristles of the cleaning brush (9) can be inserted into the screening holes (8).

3. The molding device of a plastic state material according to claim 1, characterized in that: The pushing plate (71) is provided with a blowing hole inclined downward, and the pushing plate (71) is provided with a fan (10).

4. The molding device of a plastic state material according to claim 1, characterized in that: A feeding pipe (15) is arranged in the screening chamber (6), one end of the feeding pipe (15) is connected to the screening chamber (6), and the other end is connected to the space above the crushing device (4) in the feed hopper (2), and a feeding auger (16) is arranged in the feeding pipe (15).

5. A method for forming a material in a plastic state, using a forming device for a material in a plastic state as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1: crushing the raw material by a crushing device (4) to refine the raw material; S2: screening the raw material by a screening device (5); S3: Raw materials with sizes meeting the requirements enter the machine body (1) through the screening device (5); S4: The heating device heats the raw material to form a molten state; S5: The nozzle (3) extrude the molten raw material.

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