Raw material conveying device of injection molding machine

Abstract

The utility model discloses a raw material conveying device of an injection molding machine, relates to the technical field of injection molding machines, and aims to provide a raw material conveying device of an injection molding machine, which is used for limiting the flow of raw material conveying and conveniently discharging caked raw materials. The raw material conveying device comprises an injection molding machine body, a feeding hopper, a flow limiting pipe and a stirring barrel are arranged on the injection molding machine body, and a stirring mechanism is arranged in the stirring barrel; a flow limiting pipe is arranged in the stirring barrel, two sets of adjusting mechanisms are arranged in the flow limiting pipe, a conveying pipe is arranged at the bottom of the stirring barrel, the conveying pipe is connected and communicated with the stirring barrel, and a screening mechanism is arranged in the conveying pipe. Blocking can be avoided when a large number of raw materials are conveyed, and the burden of a stirring mechanism is relieved; and by arranging the screening mechanism, large-particle or caked raw materials are screened out and discharged from the discharging opening through the push plate, so that the conveying pipe is prevented from being accumulated and blocked, and the workload of manual cleaning is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and more specifically, to a raw material conveying device of an injection molding machine. Background Art

[0002] Injection molding machine is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. According to the arrangement of the injection device and the clamping device, it can be divided into vertical, horizontal and vertical-horizontal combined types.

[0003] A Chinese patent with application number CN201721779719.5 discloses a raw material conveying device for an injection molding machine, including a feeding device, a bracket, a controller, a feeder, an extraction pump and an inner bin. A feeder is fixedly provided below the feeding device. By providing a feeder with an extraction pump, the self-rotation and falling effect of the raw materials of the injection molding machine is increased, and blockage in the raw material delivery is avoided. However, the extraction and conveying method easily causes excessive accumulation of raw materials in the barrel, which puts a heavy load on the stirring mechanism and makes it difficult to stir and mix the raw materials evenly. Moreover, if there are large particles in the raw materials, or the raw materials are agglomerated, the feeder is likely to block the delivery port after extraction, and it is difficult to discharge, affecting work efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a feeding device for an injection molding machine which can limit the flow of raw material transportation, prevent accumulation and blockage, and facilitate the discharge of agglomerated raw materials.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A raw material conveying device for an injection molding machine comprises an injection molding machine body, characterized in that a feed hopper, a flow limiting tube and a stirring drum are provided on the injection molding machine body, the flow limiting tube is fixed between the feed hopper and the stirring drum, and the feed hopper, the flow limiting tube and the stirring drum are connected to each other, a stirring mechanism is provided in the stirring drum, two sets of adjustment mechanisms are provided in the flow limiting tube, the adjustment mechanism comprises an adjustment block, a connecting shaft, a bearing, and a first motor, a mounting hole is provided in the flow limiting tube, the bearing is fixed in the mounting hole, the connecting shaft passes through the adjustment block and one end of the connecting shaft is rotatably connected to the bearing, the first motor is fixed on the flow limiting tube, and the output end of the first motor is fixedly connected to the other end of the connecting shaft, a conveying pipe is provided at the bottom of the stirring drum, the conveying pipe is connected and connected to the stirring drum, and a screening mechanism is provided in the conveying pipe.

[0007] It is further configured that the screening mechanism includes a screen, a cylinder, a scraper, a push plate, a connecting rod, a spring, a fixed plate and a collection box, the screen is fixed in the conveying pipe, the cylinder is placed on one side of the conveying pipe, the output end of the cylinder extends into the conveying pipe and is fixedly connected to the scraper, a discharge port is opened on the conveying pipe, the push plate is placed in the discharge port and is movably connected to the discharge port, the connecting rod is placed between the scraper and the push plate and is fixedly connected to the scraper, the top of the fixed plate is fixedly connected to the mixing drum, the spring is placed between the push plate and the fixed plate, and the two ends of the spring are respectively fixedly connected to the push plate and the fixed plate, and the collection box is placed on one side of the discharge port.

[0008] It is further configured that the stirring mechanism includes a fixed shell, a second motor, a stirring shaft and a plurality of stirring blades, the fixed shell is placed between the two sets of adjustment mechanisms, the top of the fixed shell is triangular, the second motor is fixed in the fixed shell, the output end of the second motor extends into the stirring drum and is fixedly connected to the stirring shaft, and the plurality of stirring blades are fixed on the stirring shaft.

[0009] It is further configured that a rubber ring is fixed on the push plate, and the rubber ring is sealed and connected to the discharge port.

[0010] It is further configured that a bracket is fixed on the mixing drum, a plurality of legs are provided on the bracket, and the plurality of legs are fixedly connected to the injection molding machine body.

[0011] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: by setting an adjusting mechanism, the flow of the injected raw materials is limited, and the raw materials need to pass through the rotating adjusting block and then fall into the mixing drum, which can avoid blockage when conveying a large amount of raw materials and reduce the burden on the stirring mechanism; by setting a screening mechanism, large particles or agglomerated raw materials are screened out and discharged from the discharge port through a push plate, which avoids accumulation and blockage in the conveying pipe affecting the material delivery and also reduces the workload of manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0013] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the adjustment mechanism of an embodiment of the utility model.

[0015] Figure numerals: 1 injection molding machine body, 2 feed hopper, 3 flow limiting tube, 4 mixing drum, 41 conveying pipe, 5 adjustment block, 6 connecting shaft, 7 bearing, 8 first motor, 9 screen, 10 cylinder, 11 scraper, 12 push plate, 13 connecting rod, 14 spring, 15 fixed plate, 16 fixed shell, 17 mixing shaft, 18 mixing blade, 19 second motor, 20 collecting box, 21 rubber ring, 22 bracket, 23 support foot. DETAILED DESCRIPTION

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

[0017] Reference Figures 1 to 3 The utility model is further described in detail.

[0018] A raw material conveying device for an injection molding machine comprises an injection molding machine body 1, on which a feed hopper 2, a flow limiting tube 3 and a mixing drum 4 are arranged, the flow limiting tube 3 is fixed between the feed hopper 2 and the mixing drum 4, and the feed hopper 2, the flow limiting tube 3 and the mixing drum 4 are interconnected, a conveying pipe 41 is arranged at the bottom of the mixing drum 4, the conveying pipe 41 is connected and communicated with the mixing drum 4, a stirring mechanism is arranged in the mixing drum 4, two sets of adjusting mechanisms are arranged in the flow limiting tube 3, and a screening mechanism is arranged in the conveying pipe 41.

[0019] The stirring mechanism includes a fixed shell 16, a second motor 19, a stirring shaft 17 and a plurality of stirring blades 18. The fixed shell 16 is fixed in the flow limiting tube 3. The top of the fixed shell 16 is triangular. The second motor 19 is fixed in the fixed shell 16. The output end of the second motor 19 extends into the stirring drum 4 and is fixedly connected to the stirring shaft 17. The plurality of stirring blades 18 are all fixed on the stirring shaft 17. The output end of the second motor 19 rotates to drive the stirring shaft 17 and the stirring blades 18 to rotate so that the raw materials in the stirring drum 4 are stirred and mixed evenly.

[0020] The two groups of adjustment mechanisms are respectively located on both sides of the fixed shell 16, and the adjustment mechanism includes an adjustment block 5, a connecting shaft 6, a bearing 7, and a first motor 8. A mounting hole is opened in the flow limiting tube, and the bearing 7 is fixed in the mounting hole. The connecting shaft 6 passes through the adjustment block 5 and one end of the connecting shaft 6 is rotatably connected to the bearing 7. The first motor 8 is fixed outside the flow limiting tube 3, and the output end of the first motor 8 is fixedly connected to the other end of the connecting shaft 6. The raw material is poured from the feed hopper 2 and falls on the fixed shell 16. It will fall on the inclined surface at the top of the fixed shell 16 to the adjustment block 5 of the two groups of adjustment mechanisms. The output end of the first motor 8 rotates to drive the adjustment block 5 to rotate. The adjustment block 5 rotates to a vertical state, and the channel of the flow limiting tube 3 entering the mixing drum 4 is increased, and the raw material conveying speed is fast. The adjustment block 5 rotates to a horizontal state, and the channel of the flow limiting tube 3 entering the mixing drum 4 is reduced, and the raw material conveying speed is slowed down.

[0021] The screening mechanism includes a screen 9, a cylinder 10, a scraper 11, a push plate 12, a connecting rod 13, a spring 14 and a fixed plate 15. The screen 9 is fixed in the delivery pipe 41. The cylinder 10 is placed on one side of the delivery pipe 41 and fixed on the injection molding machine body 1. The output end of the cylinder 10 extends into the delivery pipe 41 and is fixedly connected to the scraper 11. The scraper 11 is located above the screen 9, and the bottom of the scraper 11 is against the screen 9. A discharge port is opened on the other side of the delivery pipe 41. The push plate 12 is placed in the discharge port and is movably connected to the discharge port. A rubber ring 21 is fixed on the push plate 12. The rubber ring 21 is sealed and connected with the discharge port, the connecting rod 13 is placed between the scraper 11 and the push plate 12, the connecting rod 13 is fixedly connected with the scraper 11, the top of the fixed plate 15 is fixedly connected with the outer wall of the mixing drum 4, the spring 14 is placed between the push plate and the fixed plate, and the two ends of the spring 14 are respectively fixedly connected with the push plate 12 and the fixed plate 15, the output end of the cylinder 10 can push the scraper 11 to move toward the discharge port, and push the large particles of raw materials on the screen 9 toward the discharge port, the connecting rod 13 pushes the push plate 12 outward, and after the push plate 12 is separated from the discharge port, the large particles of raw materials fall into the collecting box 20 from the discharge port.

[0022] A bracket 22 is fixed on the mixing drum 4, and a plurality of legs 23 are provided on the bracket 22. The plurality of legs 23 are all fixedly connected to the injection molding machine body 1, so that the raw material conveying device is more stable during mixing.

[0023] The working principle of the embodiment of the utility model is: the raw material is poured from the feed hopper 2, the raw material falls downward to the flow limiting tube 3, the first motor 8 in the two groups of adjustment mechanisms is started, the output end of the first motor 8 rotates to drive the adjustment baffle 5 to rotate, the adjustment baffle 5 rotates to a vertical state, the passage of the flow limiting tube 3 entering the mixing drum 4 is increased, and the raw material conveying speed is fast, the adjustment baffle 5 rotates to a horizontal state, the passage of the flow limiting tube 3 entering the mixing drum 4 is reduced, and the raw material conveying speed is slowed down, and the conveying speed of the raw material is adjusted by adjusting the adjustment mechanism; the output end of the second motor 19 rotates to drive the stirring shaft 17 The stirring shaft 17 and the stirring blades 18 rotate to mix the raw materials evenly; the stirred raw materials need to be discharged from the conveying pipe 41, and the screen 9 in the conveying pipe 41 screens the raw materials. Large particles or agglomerated raw materials are placed on the screen 9 and cannot pass through. The cylinder 10 is started, and the output end of the cylinder 10 pushes the scraper 11 and the connecting rod 13 to move. The connecting rod 13 abuts against the fixed plate 15 and pushes the fixed plate 15. The spring 14 is forced to compress the push plate 12 to move outward, and the large particles or agglomerated raw materials are pushed out of the discharge port and fall into the collecting box 20, which avoids the accumulation and blockage of raw materials and improves the quality of the finished product.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw material conveying device for an injection molding machine, comprising an injection molding machine body, characterized in that: The injection molding machine body is provided with a feed hopper, a flow limiting tube and a mixing drum. The flow limiting tube is fixed between the feed hopper and the mixing drum, and the feed hopper, the flow limiting tube and the mixing drum are interconnected. A stirring mechanism is provided in the mixing drum, and two groups of regulating mechanisms are provided in the flow limiting tube. The regulating mechanism comprises an regulating block, a connecting shaft, a bearing, and a first motor. A mounting hole is provided in the current limiting tube, the bearing is fixed in the mounting hole, the connecting shaft passes through the regulating block, and one end of the connecting shaft is rotatably connected to the bearing. The first motor is fixed on the current limiting tube, and the output end of the first motor is fixedly connected to the other end of the connecting shaft. A delivery pipe is provided at the bottom of the mixing drum, the delivery pipe is connected and communicated with the mixing drum, and a screening mechanism is provided in the delivery pipe.

2. A raw material conveying device for an injection molding machine according to claim 1, characterized in that: The screening mechanism includes a screen, a cylinder, a scraper, a push plate, a connecting rod, a spring, a fixed plate and a collection box. The screen is fixed in the conveying pipe, the cylinder is placed on one side of the conveying pipe, the output end of the cylinder extends into the conveying pipe and is fixedly connected to the scraper, a discharge port is opened on the conveying pipe, the push plate is placed in the discharge port and is movably connected to the discharge port, the connecting rod is placed between the scraper and the push plate and is fixedly connected to the scraper, the top of the fixed plate is fixedly connected to the mixing drum, the spring is placed between the push plate and the fixed plate, and the two ends of the spring are respectively fixedly connected to the push plate and the fixed plate, and the collection box is placed on one side of the discharge port.

3. A raw material conveying device for an injection molding machine according to claim 1, characterized in that: The stirring mechanism includes a fixed shell, a second motor, a stirring shaft and a plurality of stirring blades. The fixed shell is placed between the two groups of adjustment mechanisms. The top of the fixed shell is triangular. The second motor is fixed in the fixed shell. The output end of the second motor extends into the stirring drum and is fixedly connected to the stirring shaft. The plurality of stirring blades are fixed on the stirring shaft.

4. A raw material conveying device for an injection molding machine according to claim 2, characterized in that: A rubber ring is fixed on the push plate, and the rubber ring is sealed and connected with the discharge port.

5. The material conveying device for an injection molding machine according to claim 1, characterized in that: A bracket is fixed on the mixing drum, and a plurality of supporting legs are arranged on the bracket, and the plurality of supporting legs are all fixedly connected to the injection molding machine body.

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