Water gap recovery device for injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a water gap recovery device for an injection molding machine, which comprises a recovery box, the top of the recovery box is provided with a feed hopper, the recovery box is internally provided with a crushing barrel and a screen drum, the periphery of the screen drum is provided with first filter holes, the crushing barrel is internally provided with a rotating shaft, and the periphery of the rotating shaft is connected with crushing cutters; the lower end of the rotating shaft penetrates through the screen drum and extends to the bottom of the recycling box to be connected with a first motor, the first motor is fixedly connected with the bottom of the recycling box, an inclined guide plate is arranged below the screen drum, a discharging port is formed in the lower side of the guide plate and is connected with the recycling box in a penetrating mode, and the rotating shaft is fixedly connected with the screen drum; a supporting plate is arranged below the screen drum, the screen drum is rotationally connected with the supporting plate, the periphery of the supporting plate is fixedly connected with the inner wall of the recycling box, and a discharging hole is formed in the middle of the supporting plate. The crushing efficiency is improved, the water gap crushing size is controlled to meet the use requirement, and the screening and filtering capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a sprue recovery device for injection molding machines. Background Technology

[0002] Injection molding machines are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting materials using plastic molds. Injection molding is achieved through the injection molding machine and the mold. During the injection molding process, a sprue, also known as a gate, is formed at the joint between the frame and the part when the mold is cast. The sprue is formed by the cooling of the runner during the injection of the product. After the injection molding is completed and the mold is separated, the sprue will fall out from the gap in the mold. Because its composition and material are the same as the injection-molded product, it is mostly recycled.

[0003] A document with publication number CN105345992A discloses a sprue crushing and recycling system, including a sprue crushing and recycling box and a conveying mechanism. The recycling box includes a box body, a support frame, and a recycling hopper. The support frame is located inside the box body, with its bottom end resting on the inner bottom wall of the box body. The recycling hopper is detachably mounted on its top end. The top of the recycling hopper forms a funnel-shaped inlet extending towards the mold opening and closing surface. The bottom end of the recycling hopper forms an outlet extending towards the inner bottom wall of the box body. The recycling hopper contains a crushing wheel for crushing sprues, with a magnetic screen below the crushing wheel, covering the outlet. The conveying mechanism includes a suction pipe, a conveyor, and a conveying pipe. One end of the conveyor is connected to the inside of the box body via the suction pipe, and the other end is connected to the feeding hopper of the injection molding machine via the conveying pipe to transport the recycled sprue material from the box body to the feeding hopper. However, this solution still has shortcomings. In actual use, the size of the crushed sprues cannot be controlled, and the magnetic screen inside the equipment has poor filtration capacity, making it inconvenient for the sprues to fall off.

[0004] Therefore, it is necessary to provide a sprue recovery device for injection molding machines to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sprue recovery device for injection molding machines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sprue recovery device for injection molding machines, comprising a recovery box, a feeding hopper at the top of the recovery box, a crushing barrel and a sieve cylinder arranged sequentially from top to bottom inside the recovery box, a first filter hole opened around the sieve cylinder, the crushing barrel being located directly below the feeding hopper, a vertically placed rotating shaft inside the crushing barrel, and crushing blades connected around the rotating shaft;

[0007] The lower end of the rotating shaft passes through the screen cylinder and extends to the bottom of the recycling box, where it is connected to the first motor. The first motor is fixedly connected to the bottom of the recycling box. An inclined guide plate is provided below the screen cylinder, and a discharge port is provided on the lower side of the guide plate. The discharge port is connected through the recycling box, and the rotating shaft is fixedly connected to the screen cylinder.

[0008] A support plate is provided below the screen cylinder, and the screen cylinder and the support plate are rotatably connected. The four sides of the support plate are fixedly connected to the inner wall of the recycling box, and a material discharge hole is provided in the middle of the support plate.

[0009] Preferably, a scraper is connected to the side of the screen cylinder, the bottom of the scraper is in contact with the support plate, and an opening is provided on the upper left side of the support plate.

[0010] Preferably, the opening is connected to a feed pipe, the left end of which is connected to a feeding box, the top right side of the feeding box is connected to a discharge pipe, the right end of which extends into the recycling box and is located above the crushing barrel, a screw is rotatably installed inside the feeding box, and a second motor is connected to the top of the feeding box, the output end of the second motor is connected to the screw.

[0011] Preferably, the support plate has a second filter hole.

[0012] Preferably, there are multiple crushing blades, and the length of the multiple crushing blades increases sequentially from top to bottom along the rotation axis.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] I. In this utility model, the length of multiple crushing blades increases sequentially from top to bottom along the rotating axis. The water inlet that just falls into the crushing barrel first contacts the shorter crushing blade for initial crushing. As the water inlet falls downward, the crushing degree of the water inlet increases with the increase in the length of the crushing blade, thereby improving the crushing efficiency and avoiding the situation where the water inlet cannot be crushed.

[0015] II. In this utility model, the first motor drives the rotating shaft to rotate, and the rotating shaft drives the screen cylinder and scraper to rotate. The water outlets screened by the screen cylinder fall onto the support plate. The scraper scrapes the water outlets to the feed pipe and they fall into the feeding box from the feed pipe. The second motor drives the screw to rotate and sends the water outlets back to the crushing barrel through the discharge pipe for secondary crushing, thereby controlling the crushed size of the water outlets to meet the usage requirements.

[0016] Third, in this utility model, the screen cylinder rotates and screens via a rotating shaft, resulting in higher screening efficiency. At the same time, the scraper drives the water inlet to rotate on the support plate, and the second filter hole can perform secondary screening and filtration on the water inlet screened by the screen cylinder, thereby improving the screening and filtration capacity. Attached Figure Description

[0017] Figure 1 This is a front structural sectional view of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the sieve cylinder described in this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the support plate described in this utility model.

[0020] In the diagram: 1-Recycling bin; 2-Feed hopper; 3-Crushing barrel; 4-Rotating shaft; 5-Crushing blade; 6-Screw cylinder; 61-First filter hole; 7-Support plate; 71-Discharge hole; 72-Second filter hole; 8-Scraper; 9-Guide plate; 10-First motor; 11-Discharge port; 12-Feeding box; 13-Feed pipe; 14-Discharge pipe; 15-Screw; 16-Second motor. Detailed Implementation

[0021] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] Please see Figure 1-Figure 3This utility model provides an embodiment of a sprue recovery device for an injection molding machine, comprising a recovery box 1, a feeding hopper 2 at the top of the recovery box 1, a crushing barrel 3 and a screen cylinder 6 arranged sequentially from top to bottom inside the recovery box 1, a first filter hole 61 opened around the screen cylinder 6, the crushing barrel 3 being located directly below the feeding hopper 2, a vertically placed rotating shaft 4 being provided inside the crushing barrel 3, and crushing blades 5 connected around the rotating shaft 4; the lower end of the rotating shaft 4 passes through the screen cylinder 6 and extends to the bottom of the recovery box 1 and is connected to a first motor 10, the first motor 10 being fixedly connected to the bottom of the recovery box 1, an inclined guide plate 9 being provided below the screen cylinder 6, a discharge port 11 being provided on the lower side of the guide plate 9, the discharge port 11 being connected through to the recovery box 1, the rotating shaft 4 being fixedly connected to the screen cylinder 6; a support plate 7 being provided below the screen cylinder 6, the support plate 7 being annular, the screen cylinder 6 being rotatably connected to the support plate 7, the support plate 7 being fixedly connected around the inner wall of the recovery box 1, and a discharge hole 71 being opened in the middle of the support plate 7.

[0025] Furthermore, a scraper 8 is connected to the side of the screen cylinder 6. The bottom of the scraper 8 is in contact with the support plate 7. An opening is provided on the upper left side of the support plate 7, and a feed pipe 13 is connected to the opening. The left end of the feed pipe 13 is connected to the feeding box 12. The top right side of the feeding box 12 is connected to the discharge pipe 14. The right end of the discharge pipe 14 extends into the recycling box 1, and the right end of the discharge pipe 14 is located above the crushing barrel 3. A screw 15 is rotatably installed inside the feeding box 12. A second motor 16 is connected to the top of the feeding box 12, and the output end of the second motor 16 is connected to the screw 15.

[0026] The first motor 10 drives the rotating shaft 4 to rotate, which in turn drives the screen cylinder 6 and scraper 8 to rotate. The water outlets screened by the screen cylinder 6 fall onto the support plate 7. The scraper 8 scrapes the water outlets to the feed pipe 13 and then they fall into the feeding box 12. The second motor 16 drives the screw 15 to rotate, which sends the water outlets back to the crushing barrel 3 through the discharge pipe 14 for secondary crushing, thereby controlling the crushed water outlet size to meet the usage requirements.

[0027] Furthermore, a second filter hole 72 is provided on the support plate 7. The second filter hole 72 can perform secondary screening and filtration on the water outlet screened by the screen cylinder 6, thereby improving the screening and filtration capacity.

[0028] Furthermore, there are multiple crushing blades 5, and the length of the multiple crushing blades 5 increases sequentially from top to bottom along the rotating shaft 4. The water inlet that just falls into the crushing barrel 3 first contacts the shorter crushing blades 5 for initial crushing. As the water inlet falls downward, the crushing degree of the water inlet increases with the increase in the length of the crushing blades 5, thereby improving the crushing efficiency and avoiding the situation where the water inlet cannot be crushed.

[0029] Working principle of this utility model: When in use, the first motor 10 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the crushing blade 5 and the screen cylinder 6 to rotate. The crushing blade 5 crushes the water inlet fed from the feed hopper 2, and the screen cylinder 6 screens the water inlet. The water inlet that meets the requirements falls through the first filter hole 61 to the guide plate 9 and is discharged from the discharge port 11. The water inlet that does not meet the requirements falls onto the support plate 7, and is scraped by the scraper 8 to the feed pipe 13 and falls into the feeding box 12. The second motor 16 drives the screw 15 to rotate, and sends the water inlet back to the crushing barrel 3 through the discharge pipe 14 for secondary crushing.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sprue recovery device for an injection molding machine, characterized in that: Includes a recycling bin (1), the top of which is provided with a feeding hopper (2), and the inside of the recycling bin (1) is provided with a crushing barrel (3) and a screen cylinder (6) from top to bottom. The screen cylinder (6) is provided with a first filter hole (61) around its perimeter. The crushing barrel (3) is located directly below the feeding hopper (2). The inside of the crushing barrel (3) is provided with a vertically placed rotating shaft (4), and the rotating shaft (4) is connected with crushing blades (5) around its perimeter. The lower end of the rotating shaft (4) passes through the screen cylinder (6) and extends to the bottom of the recycling box (1) and is connected to the first motor (10). The first motor (10) is fixedly connected to the bottom of the recycling box (1). An inclined guide plate (9) is provided below the screen cylinder (6). A discharge port (11) is provided on the lower side of the guide plate (9). The discharge port (11) is connected through to the recycling box (1). The rotating shaft (4) is fixedly connected to the screen cylinder (6). A support plate (7) is provided below the screen cylinder (6). The screen cylinder (6) and the support plate (7) are rotatably connected. The support plate (7) is fixedly connected to the inner wall of the recycling box (1) around its perimeter. A material discharge hole (71) is provided in the middle of the support plate (7).

2. The sprue recovery device for an injection molding machine according to claim 1, characterized in that: The side of the screen cylinder (6) is connected to a scraper (8), the bottom of the scraper (8) is in contact with the support plate (7), and the support plate (7) has an opening on the upper left side.

3. The sprue recovery device for an injection molding machine according to claim 2, characterized in that: The opening is connected to a feed pipe (13), the left end of which is connected to a feeding box (12). The top right side of the feeding box (12) is connected to a discharge pipe (14), the right end of which extends into the recycling box (1) and is located above the crushing barrel (3). A screw (15) is rotatably installed inside the feeding box (12). A second motor (16) is connected to the top of the feeding box (12), and the output end of the second motor (16) is connected to the screw (15).

4. The sprue recovery device for an injection molding machine according to claim 1, characterized in that: The support plate (7) has a second filter hole (72).

5. The sprue recovery device for an injection molding machine according to claim 1, characterized in that: The number of the crushing blades (5) is multiple, and the length of the multiple crushing blades (5) increases sequentially from top to bottom along the rotation axis (4).

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