A raw material feeding device for an injection molding machine

Abstract

The utility model discloses a raw material feeding device for injection molding machine relates to PP injection molding technical field, including the melting bucket, the lower side swing mounting of melting bucket has injection molding mechanism, the upper side fixed connection of melting bucket has the bucket lid, the upper side middle part swing mounting of bucket lid has the stirring mechanism, the upper side fixed connection of bucket lid has two sealing mechanisms, the upper side of two sealing mechanisms all is equipped with the material conveying mechanism, the sealing mechanism includes first motor, the lower side fixed connection of first motor is in the upper side of bucket lid. The raw material feeding device for injection molding machine, through first motor drive the rotation of the rotating plate, and then make the feed pipe open or closed state, to facilitate the material conveying mechanism to the melting bucket in the material conveying, need not to take the injection molding mechanism directly and pull, convenient and fast operation, improve the feeding efficiency of raw materials.

Description

Technical Field

[0001] This utility model relates to the field of PP injection molding technology, and in particular to a raw material feeding device for injection molding machines. Background Technology

[0002] Injection molding machines are molding equipment that uses plastic molds to form plastic products of various shapes from thermoplastic or thermosetting plastics. They are mainly divided into two types: vertical injection molding machines and horizontal injection molding machines.

[0003] Chinese patent document CN222779912U discloses a feeding device for an injection molding machine, belonging to the field of injection molding machine technology. This feeding device includes a feeding structure and a crushing structure. The feeding structure includes a moving component, a lifting component, a feeding box, a clamping component, and a sealing component. The lifting component is connected to the moving component, and the feeding box is slidably connected to the lifting component. The clamping component is disposed on one side of the lifting component and clamps onto the feeding box. The crushing structure includes a mounting plate, a first servo motor, a rotating shaft, a crushing cutter head, and a screw. The mounting plate is disposed inside the feeding box, and the first servo motor is mounted on one side of the mounting plate. In this application, the feeding device for the injection molding machine facilitates the crushing of raw materials during the feeding process, improving work efficiency.

[0004] The existing technology has the following problems: The feeding device relies on the automatic up-and-down movement of the mounting plate to assist in opening the feeding box, so as to facilitate filling the feeding box with filler. However, after the feeding box is opened, the conveying equipment still needs to be moved to the top of the feeding box, or the material needs to be manually fed into the feeding box. The operation is complicated. During feeding, the plastic liquid adhering to the mixing parts may drip down, affecting the surrounding working environment. Utility Model Content

[0005] This invention provides a raw material feeding device for an injection molding machine to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A raw material feeding device for an injection molding machine includes a melting tank, an injection molding mechanism movably mounted on the lower side of the melting tank, a tank cover fixedly connected to the upper side of the melting tank, a stirring mechanism movably mounted in the middle of the upper side of the tank cover, and two sealing mechanisms fixedly connected to the upper side of the tank cover. Each of the two sealing mechanisms is provided with a material conveying mechanism on its upper side. The sealing mechanism includes a first motor, the lower side of which is fixedly connected to the upper side of the barrel lid. A rotating plate is fixedly connected to the output end of the first motor. A connecting pipe is fixedly connected to the inner side of the rotating plate. A fixing frame is fixedly connected to the inner side of one of the connecting pipes. A first telescopic rod is fixedly connected to the inner side of the fixing frame. A sealing plate is fixedly connected to the lower side of the first telescopic rod. A feed pipe is fixedly connected to the upper side of the barrel lid.

[0007] Preferably, the material conveying mechanism includes a storage hopper, a mechanism tube fixedly connected to the lower side of the storage hopper, two rotating frames distributed vertically fixedly connected to the inner side of the mechanism tube, an auger rotatably connected to the inner side of the rotating frames, a transmission rod movably sleeved on the inner side of the auger, a second motor fixedly connected to the upper side of the storage hopper, a transmission tube fixedly connected to the output end of the second motor, and the outer side of the transmission rod movably sleeved on the inner side of the transmission tube.

[0008] Preferably, a rubber sleeve is fixedly connected to the outer side of the sealing plate.

[0009] Preferably, the inner side of the feed pipe is inverted conical.

[0010] Preferably, a second telescopic rod is fixedly connected to the inner side of the storage hopper near the right side, a lifting plate is fixedly connected to the lower side of the second telescopic rod, a rotating sleeve is rotatably connected to the inner side of the lifting plate, the inner side of the rotating sleeve is fixedly connected to the outer side of the transmission rod, a sealing platform is fixedly connected to the lower end of the transmission rod, and several ring-shaped sealing blocks are fixedly connected to the inner side of the mechanism tube.

[0011] Preferably, the outer side of the transmission rod is provided with a wear-resistant layer.

[0012] Preferably, the feed pipe, sealing plate, sealing platform, and sealing block are all made of heat-insulating material.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides a raw material feeding device for injection molding machines. Based on the cooperation of a sealing mechanism, a first motor, a rotating plate, a connecting pipe, a fixed frame, a first telescopic rod, a sealing plate, a feeding pipe, and a conveying mechanism, the first motor drives the rotating plate to rotate, thereby switching the two connecting pipes and making the feeding pipe open or closed, so as to facilitate the conveying mechanism to feed material into the molten barrel without directly lifting the injection molding mechanism. The operation is convenient and quick, and the feeding efficiency of raw materials is improved.

[0014] 2. This utility model provides a raw material feeding device for injection molding machines. Based on the cooperation of the feeding mechanism, storage hopper, mechanism tube, rotating frame, auger, second motor, transmission tube, transmission rod, rotating sleeve, lifting plate, second telescopic rod, sealing platform and sealing block, the second motor drives the auger to rotate, so as to stabilize the feeding. The mutual interlocking of the sealing platform and sealing block can seal the bottom of the mechanism tube, so that when multiple materials are conveyed, such as plastic granules and colored granules, they can be fed stably respectively, so as to keep the proportion of each material fed as constant as possible. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the bucket lid part of this utility model; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the material conveying mechanism of this utility model; Figure 4 This is a three-dimensional structural diagram of the transmission rod part of this utility model; Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the sealing mechanism of this utility model.

[0016] In the diagram: 1. Melting tank; 2. Injection molding mechanism; 3. Tank lid; 4. Stirring mechanism; 5. Sealing mechanism; 51. First motor; 52. Rotating plate; 53. Connecting pipe; 54. Fixing frame; 55. First telescopic rod; 56. Sealing plate; 57. Feeding pipe; 6. Conveying mechanism; 61. Storage hopper; 62. Mechanism pipe; 63. Rotating frame; 64. Screwdriver; 65. Second motor; 66. Transmission pipe; 67. Transmission rod; 68. Rotating sleeve; 69. Lifting plate; 610. Second telescopic rod; 611. Sealing platform; 612. Sealing block. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1-5 As shown, a raw material feeding device for an injection molding machine includes a melting tank 1, an injection molding mechanism 2 movably installed on the lower side of the melting tank 1, a tank cover 3 fixedly connected to the upper side of the melting tank 1, a stirring mechanism 4 movably installed in the middle of the upper side of the tank cover 3, and two sealing mechanisms 5 fixedly connected to the upper side of the tank cover 3. A material conveying mechanism 6 is provided on the upper side of each of the two sealing mechanisms 5. The sealing mechanism 5 includes a first motor 51, the lower side of which is fixedly connected to the upper side of the barrel lid 3. The output end of the first motor 51 is fixedly connected to a rotating plate 52. The inner side of the rotating plate 52 is fixedly connected to a connecting pipe 53. The inner side of one of the connecting pipes 53 is fixedly connected to a fixing frame 54. The inner side of the fixing frame 54 is fixedly connected to a first telescopic rod 55. The lower side of the first telescopic rod 55 is fixedly connected to a sealing plate 56. The upper side of the barrel lid 3 is fixedly connected to a feed pipe 57.

[0019] It should be noted that the melting tank 1, the injection molding mechanism 2, and the stirring mechanism 4 are existing technologies and will not be described in detail here. The first motor 51 drives the rotating plate 52 to rotate, so that the two connecting pipes 53 alternately move to the upper side of the feed pipe 57 to connect the mechanism pipe 62 and the feed pipe 57. The first telescopic rod 55 is an electric push rod. When the connecting pipe 53 containing the fixing frame 54 moves to the feed pipe 57, the first telescopic rod 55 drives the sealing plate 56 to move up and down, thereby sealing the feed pipe 57.

[0020] like Figure 5 As shown, a rubber sleeve is fixedly connected to the outer side of the sealing plate 56.

[0021] It should be noted that the rubber sleeve is used to seal the gap between the sealing plate 56 and the feed tube 57. The injection molding temperature of PP material is 200℃-300℃. Some high-temperature resistant rubbers can work in this environment, such as borosilicate rubber.

[0022] like Figure 5 As shown, the inner side of the feed pipe 57 is inverted conical.

[0023] It should be noted that the inner shape of the feed tube 57 avoids the problem of significant wear between the rubber sleeve outside the sealing plate 56 and the feed tube 57 before the outer side of the sealing plate 56 and the inner side of the feed tube 57 are fully fitted together.

[0024] like Figure 3 , Figure 4 As shown, the material conveying mechanism 6 includes a storage hopper 61. A mechanism tube 62 is fixedly connected to the lower side of the storage hopper 61. Two rotating frames 63, distributed vertically, are fixedly connected to the inner side of the mechanism tube 62. An auger 64 is rotatably connected to the inner side of the rotating frame 63. A transmission rod 67 is movably sleeved on the inner side of the auger 64. A second motor 65 is fixedly connected to the upper side of the storage hopper 61. A transmission tube 66 is fixedly connected to the output end of the second motor 65. The outer side of the transmission rod 67 is movably sleeved on the inner side of the transmission tube 66.

[0025] It should be noted that the second motor 65 drives the transmission tube 66 to rotate, and when the transmission tube 66 rotates, it drives the transmission rod 67 to rotate. When the transmission rod 67 rotates, it drives the auger 64 to rotate. When the auger 64 rotates, it conveys the material in the storage hopper 61 downward. The transmission rod 67 is hexagonal in shape, and the inner wall of the transmission tube 66 is in close contact with the outer surface of the transmission rod 67, so that the transmission rod 67 can move up and down in the transmission tube 66 while being driven to rotate by the transmission tube 66.

[0026] like Figure 3 , Figure 4 As shown, a second telescopic rod 610 is fixedly connected to the inner side of the storage hopper 61 near the right side. A lifting plate 69 is fixedly connected to the lower side of the second telescopic rod 610. A rotating sleeve 68 is rotatably connected to the inner side of the lifting plate 69. The inner side of the rotating sleeve 68 is fixedly connected to the outer side of the transmission rod 67. A sealing platform 611 is fixedly connected to the lower end of the transmission rod 67. Several ring-shaped sealing blocks 612 are fixedly connected to the inner side of the mechanism tube 62.

[0027] It should be noted that the second telescopic rod 610 is an electric push rod that can drive the transmission rod 67 to move up and down. When the transmission rod 67 is at the uppermost position, the sealing platform 611 and the sealing block 612 are interlocked to seal the bottom of the mechanism tube 62, further preventing particles from falling. When the transmission rod 67 is at the lowermost position, the sealing platform 611 and the sealing block 612 are separated, allowing the material to fall. The switching seal adopted at the sealing mechanism 5 is to prevent the heat inside the melting tank 1 from being transferred to the outside. The interlocking seal between the sealing platform 611 and the sealing block 612 is to avoid the problem of material falling due to the auger 64 being unable to completely seal the bottom of the mechanism tube 62 due to vibration or other reasons. This part of the material may fall onto the sealing plate 56. During the movement of the sealing plate, heat may be transferred, and it may melt on the sealing plate 56, making it difficult to clean.

[0028] like Figure 4 As shown, the outer side of the transmission rod 67 is provided with a wear-resistant layer.

[0029] It should be noted that the wear-resistant layer prevents particles from wearing down the transmission rod 67, which would cause a large gap between the auger 64 and the transmission rod 67. The wear-resistant layer can be a Teflon coating or a ceramic coating.

[0030] like Figure 3 , Figure 5 As shown, the feed pipe 57, sealing plate 56, sealing platform 611 and sealing block 612 are all made of heat-insulating material.

[0031] It should be noted that the heat insulation material prevents the heat inside the melting tank 1 from being transferred to the outside of these components, thus allowing the material to melt on it. At the same time, the mechanism tube 62 can be made of a high thermal conductivity material, and its outside is equipped with a spiral tube-type cooling device to further prevent the internal temperature of the mechanism tube 62 from rising during material feeding.

[0032] The working principle of this utility model is as follows: First, the first motor 51 drives the rotating plate 52 to rotate, causing the two connecting pipes 53 to alternately move to the upper side of the feed pipe 57, connecting the mechanism pipe 62 and the feed pipe 57. The first telescopic rod 55 is an electric push rod. When the connecting pipe 53 containing the fixing frame 54 moves onto the feed pipe 57, the first telescopic rod 55 drives the sealing plate 56 to move up and down, thereby closing the feed pipe 57. The first motor 51 drives the rotating plate 52 to rotate, thereby switching the two connecting pipes 53, and then making the feed pipe 57 open or closed, so as to facilitate the feeding mechanism 6 to feed material into the melting tank 1 without directly lifting the injection molding mechanism 2. The operation is convenient and quick, improving the material feeding efficiency. Finally, the second motor 65 drives the transmission pipe 66 to rotate, and when the transmission pipe 66 rotates, it drives the transmission rod 67 to rotate. When the transmission rod 67 rotates, it drives the auger 64 to rotate. When the auger 64 rotates, it conveys the material in the storage hopper 61 downwards. The second telescopic rod 610 is an electric push rod that can drive the transmission rod 67 to move up and down. When the transmission rod 67 is at the uppermost position, the sealing platform 611 and the sealing block 612 are interlocked to seal the bottom of the mechanism tube 62, further preventing particles from falling. When the transmission rod 67 is at the lowermost position, the sealing platform 611 and the sealing block 612 are separated, allowing the material to fall. The second motor 65 drives the auger 64 to rotate, making the feeding stable. The interlocking of the sealing platform 611 and the sealing block 612 can seal the bottom of the mechanism tube 62, thus enabling the stable feeding of various materials, such as plastic particles and colored particles, and keeping the proportion of each material fed as constant as possible.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material feeding device for an injection molding machine, comprising a melting tank (1), characterized in that: The lower side of the melting tank (1) is movably installed with an injection molding mechanism (2), the upper side of the melting tank (1) is fixedly connected with a tank cover (3), the upper middle part of the tank cover (3) is movably installed with a stirring mechanism (4), the upper side of the tank cover (3) is fixedly connected with two sealing mechanisms (5), and the upper side of the two sealing mechanisms (5) is provided with a material conveying mechanism (6). The sealing mechanism (5) includes a first motor (51), the lower side of which is fixedly connected to the upper side of the barrel lid (3). The output end of the first motor (51) is fixedly connected to a rotating plate (52). The inner side of the rotating plate (52) is fixedly connected to a connecting pipe (53). One of the connecting pipes (53) is fixedly connected to a fixing frame (54). The inner side of the fixing frame (54) is fixedly connected to a first telescopic rod (55). The lower side of the first telescopic rod (55) is fixedly connected to a sealing plate (56). The upper side of the barrel lid (3) is fixedly connected to a feed pipe (57).

2. The raw material feeding device for an injection molding machine according to claim 1, characterized in that: A rubber sleeve is fixedly connected to the outer side of the sealing plate (56).

3. The raw material feeding device for an injection molding machine according to claim 2, characterized in that: The inner side of the feed pipe (57) is inverted cone shape.

4. The raw material feeding device for an injection molding machine according to claim 1, characterized in that: The material conveying mechanism (6) includes a storage hopper (61), a mechanism tube (62) is fixedly connected to the lower side of the storage hopper (61), two rotating frames (63) distributed vertically are fixedly connected to the inner side of the mechanism tube (62), an auger (64) is rotatably connected to the inner side of the rotating frame (63), a transmission rod (67) is movably sleeved on the inner side of the auger (64), a second motor (65) is fixedly connected to the upper side of the storage hopper (61), a transmission tube (66) is fixedly connected to the output end of the second motor (65), and the outer side of the transmission rod (67) is movably sleeved on the inner side of the transmission tube (66).

5. The raw material feeding device for an injection molding machine according to claim 4, characterized in that: A second telescopic rod (610) is fixedly connected to the inner side of the storage hopper (61) near the right side. A lifting plate (69) is fixedly connected to the lower side of the second telescopic rod (610). A rotating sleeve (68) is rotatably connected to the inner side of the lifting plate (69). The inner side of the rotating sleeve (68) is fixedly connected to the outer side of the transmission rod (67). A sealing platform (611) is fixedly connected to the lower end of the transmission rod (67). Several ring-shaped sealing blocks (612) are fixedly connected to the inner side of the mechanism tube (62).

6. The raw material feeding device for an injection molding machine according to claim 4, characterized in that: The transmission rod (67) has a wear-resistant layer on its outer side.

7. The raw material feeding device for an injection molding machine according to claim 5, characterized in that: The feed pipe (57), sealing plate (56), sealing platform (611) and sealing block (612) are all made of heat-insulating material.

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