A quick material change device for injection molding machines

Abstract

This utility model relates to the field of material changing technology for injection molding machines. It provides a rapid material changing device for injection molding machines, installed on the injection molding machine body. The device includes a support frame, which is fixedly mounted on the machine body and has a support opening. It also includes a feed pipe, a support plate, a feed bin, a fixing mechanism, a grooved wheel mechanism, and a sealing mechanism. The feed pipe is connected between the support opening and the injection molding machine body for feeding material into the machine body. The support plate is rotatably mounted on the support frame and has four equidistant discharge ports in a ring shape. A feed bin is located on the top sidewall of the support plate, adjacent to one side of the discharge ports. A positioning pipe is connected to the bottom sidewall of the feed bin and aligned with the discharge ports. This technical solution addresses the problem of low material changing efficiency in existing injection molding machines.

Description

Technical Field

[0001] This utility model relates to the field of material changing technology for injection molding machines, specifically, to a rapid material changing device for injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. The working principle of an injection molding machine is to feed raw materials from multiple feeders into the feed port of the injection molding machine. After melting, the plasticized molten plastic is injected into a closed mold cavity, where it solidifies and sets to obtain the finished product. Injection molding is a cyclical process, with each cycle mainly including: metered feeding—melting and plasticizing—pressure injection—mold filling and cooling—mold opening and part removal. After the plastic part is removed, the mold is closed again, and the next cycle begins.

[0003] A Chinese patent with publication number CN209633638U has been found, which discloses a feeding buffer chamber for an injection molding machine. The chamber includes a base plate with a discharge port that matches the feed port of the injection molding machine. A base is slidably mounted on the upper surface of the base plate, and a collection port is provided on the base. Support columns are fixed at the four corners of the upper surface of the base, and a material platform is fixed on the upper surface of the four support columns. Multiple discharge ports are provided on the material platform, and a guide pipe is provided between the discharge ports and the collection port. Multiple buffer tanks are fixed on the upper surface at the discharge ports, and a feeding pipe is provided on the periphery of the buffer tanks.

[0004] However, the aforementioned existing injection molding machines require different material ratios and quantities when producing different products, thus necessitating the use of different buffer tanks for material storage. Each time the product being processed is changed, the feeding pipe needs to be manually connected to different buffer tanks, resulting in low material change efficiency. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a quick material changing device for injection molding machines, which solves the technical problem of low material changing efficiency in the process of material changing in existing injection molding machines.

[0006] According to one aspect, at least one embodiment of the present invention provides a quick material change device for an injection molding machine, installed on the injection molding machine body, including a support frame, the support frame being fixedly disposed on the injection molding machine body, the support frame having a support port, and further including a feed pipe, a support plate, a feed bin, a fixing mechanism, a grooved wheel mechanism, and a sealing mechanism. The feed pipe is connected between the support port and the injection molding machine body for feeding material into the injection molding machine body. The support plate is rotatably disposed on the support frame, and the support plate has equidistantly spaced circular openings. The facility has four discharge ports. A feeding hopper is located on one side of the top sidewall of the support plate, and a positioning tube is connected to the bottom sidewall of the feeding hopper. The positioning tube is aligned with the discharge ports. A feeding inlet is opened on the top sidewall of the feeding hopper. A fixing mechanism is located between the positioning tube and the support plate to fix the support plate and the positioning tube. A grooved wheel mechanism is located on the support frame to drive the support plate to rotate. A sealing mechanism is located inside the feeding hopper to seal the positioning tube.

[0007] Preferably, the fixing mechanism includes a fixing ring and a fixing bolt. The fixing ring is fixedly disposed on the outer wall of the positioning tube, and the fixing bolt passes through the fixing ring and the support plate.

[0008] Furthermore, the Geneva mechanism includes a first housing, a drive column, a Geneva wheel, an active dial, and a first motor. The first housing is fixedly mounted on the support frame, the drive column is fixedly mounted on the bottom side wall of the support plate, the bottom end of the drive column extends through the support frame into the first housing, the Geneva wheel is fixedly mounted on the bottom end of the drive column, the active dial is rotatably mounted in the first housing, the Geneva wheel cooperates with the active dial, the first motor is mounted on the first housing, and the output end of the first motor is fixedly connected to the active dial.

[0009] Furthermore, the sealing mechanism includes a first sealing disc, a sealing groove, a second sealing disc, and a lifting mechanism. The first sealing disc is fixedly disposed at the top of the positioning tube. The sealing groove is formed on the bottom side wall of the first sealing disc, and a sealing opening is formed at the bottom of the sealing groove. The sealing opening penetrates the first sealing disc and the top side wall of the feeding hopper. The second sealing disc is slidably disposed in the sealing groove. A sealing tube is fixedly disposed on the top side wall of the second sealing disc. The top end of the sealing tube extends out of the feeding hopper through the sealing opening. The bottom end of the side wall of the sealing tube is provided with multiple discharge through holes. The lifting mechanism is disposed between the feeding hopper and the sealing tube for adjusting the height of the sealing tube.

[0010] Furthermore, the lifting mechanism includes a limiting plate, a support spring, and a pressing mechanism. The limiting plate is fixedly mounted on the top of the sealing tube, the support spring is fitted onto the sealing tube, and both ends of the support spring contact the limiting plate and the feeding hopper, respectively. The pressing mechanism is mounted on the support frame and is used to press the limiting plate.

[0011] Based on the above scheme, the pressing mechanism includes a fixed frame, a pressing plate, and an electric push rod. The L-shaped fixed frame is fixedly installed on the support frame. The pressing plate is located between the fixed frame and the limiting plate. The electric push rod is installed on the fixed frame. The output end of the electric push rod passes through the fixed frame and is fixedly connected to the pressing plate.

[0012] Based on the above scheme, the feed inlet has a built-in feed control valve.

[0013] Based on the above scheme, the first motor is a servo motor.

[0014] The beneficial effects of the embodiments of this utility model are as follows:

[0015] 1. In this utility model, by setting up the grooved wheel mechanism, the operation of the first motor can drive the active dial to rotate. The continuous rotation of the active dial drives the round pin to enter the radial groove of the grooved wheel, driving the grooved wheel to rotate intermittently. This makes it easier to drive multiple feeding bins to move sequentially to the support port for material feeding by the operation of the first motor, thereby facilitating the rapid material change of the injection molding machine body.

[0016] 2. In this utility model, by setting up a sealing mechanism, the second sealing disc can be driven into the sealing groove by the elastic force of the support spring, so that the feeding hopper can be sealed by the cooperation between the second sealing disc and the sealing groove, thereby avoiding material leakage during the material changing process;

[0017] 3. In this utility model, by setting up a lifting mechanism, after the feeding bin moves above the support port, the limit plate can be pressed by the operation of the electric push rod, thereby driving the material discharge through hole through the first sealing plate through the movement of the sealing tube, so that the material in the feeding bin can be discharged through the material discharge through hole, and thus facilitate the feeding of material through the support port and the feeding pipe. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a quick material changing device for an injection molding machine according to the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of a quick material change device for an injection molding machine from another perspective in one embodiment;

[0021] Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the Geneva mechanism in the embodiment;

[0022] Figure 4 for Figure 1 A cross-sectional structural schematic diagram of the feed hopper in the embodiment;

[0023] In the diagram: 1. Injection molding machine body; 2. Support frame; 3. Support port; 4. Feed pipe; 5. Support plate; 6. Feed bin; 7. Positioning tube; 8. Feed port; 9. Fixing ring; 10. First housing; 11. Drive column; 12. Grooved wheel; 13. Active dial; 14. First motor; 15. First sealing plate; 16. Second sealing plate; 17. Sealing tube; 18. Discharge through hole; 19. Limiting plate; 20. Support spring; 21. Fixing frame; 22. Pressing plate; 23. Electric push rod. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-4As shown, this invention illustrates a quick material change device for an injection molding machine according to one embodiment. Installed on the injection molding machine body 1, it includes a support frame 2, which is fixedly mounted on the injection molding machine body 1. The support frame 2 has a support port 3. It also includes a feed pipe 4, a support plate 5, a feed bin 6, a fixing mechanism, a grooved wheel 12 mechanism, and a sealing mechanism. The feed pipe 4 is connected between the support port 3 and the injection molding machine body 1 for feeding material into the injection molding machine body 1. The support plate 5 is rotatably mounted on the support frame 2, and has equidistant, annular openings on the support plate 5. The device has four discharge ports. A feeding hopper 6 is located on the top side wall of the support plate 5, on one side of the discharge port. A positioning tube 7 is connected to the bottom side wall of the feeding hopper 6. The positioning tube 7 is aligned with the discharge port. A feeding port 8 is opened on the top side wall of the feeding hopper 6. A fixing mechanism is set between the positioning tube 7 and the support plate 5 to fix the support plate 5 and the positioning tube 7. A grooved wheel 12 mechanism is set on the support frame 2 to drive the support plate 5 to rotate. A sealing mechanism is set inside the feeding hopper 6 to seal the positioning tube 7. A feeding control valve is built into the feeding port 8.

[0031] Reference Figures 1-3 The fixing mechanism includes a fixing ring 9 and a fixing bolt. The fixing ring 9 is fixedly installed on the outer wall of the positioning tube 7, and the fixing bolt is installed through the fixing ring 9 and the support plate 5, so that the positioning tube 7 and the support plate 5 can be fixed by rotating the fixing bolt.

[0032] Reference Figure 2 As shown in Figure 3, the Geneva wheel 12 mechanism includes a first housing 10, a drive column 11, a Geneva wheel 12, an active dial 13, and a first motor 14. The first housing 10 is fixedly mounted on the support frame 2. The drive column 11 is fixedly mounted on the bottom side wall of the support plate 5. The bottom end of the drive column 11 penetrates the support frame 2 and extends into the first housing 10. The Geneva wheel 12 is fixedly mounted on the bottom end of the drive column 11. The active dial 13 is rotatably mounted inside the first housing 10. The Geneva wheel 12 cooperates with the active dial 13. The first motor 14 is mounted on the first housing 10. The output end of the first motor 14 is fixedly connected to the active dial 13. The first motor 14 is a servo motor. Specifically, the operation of the first motor 14 can drive the active dial 13 to rotate. Through the continuous rotation of the active dial 13, the pin is driven into the radial groove of the Geneva wheel 12, causing the Geneva wheel 12 to rotate intermittently. This facilitates the operation of the first motor 14 to drive multiple feed bins 6 to move sequentially to the support port 3 for material feeding, thereby facilitating the rapid material change of the injection molding machine body 1.

[0033] Reference Figure 3 and Figure 4The sealing mechanism includes a first sealing disc 15, a sealing groove, a second sealing disc 16, and a lifting mechanism. The first sealing disc 15 is fixedly mounted on the top of the positioning tube 7. The sealing groove is formed on the bottom side wall of the first sealing disc 15, and a sealing opening is formed at the bottom of the sealing groove. The sealing opening penetrates the first sealing disc 15 and the top side wall of the feeding bin 6. The second sealing disc 16 is slidably mounted in the sealing groove. A sealing tube 17 is fixedly mounted on the top side wall of the second sealing disc 16. The top of the sealing tube 17 extends out of the feeding bin 6 through the sealing opening. The bottom end of the side wall of the sealing tube 17 has multiple discharge through holes 18. The lifting mechanism is located between the feeding bin 6 and the sealing tube 17. The lifting mechanism is used to adjust the height of the sealing tube 17. It includes a limiting plate 19, a support spring 20, and a pressing mechanism. The limiting plate 19 is fixedly installed at the top of the sealing tube 17. The support spring 20 is fitted on the sealing tube 17. The two ends of the support spring 20 are in contact with the limiting plate 19 and the feed hopper 6, respectively. The pressing mechanism is installed on the support frame 2 and is used to press the limiting plate 19. Specifically, the elastic force of the support spring 20 can drive the second sealing plate 16 to extend into the sealing groove. Thus, the cooperation between the second sealing plate 16 and the sealing groove can seal the feed hopper 6, thereby preventing material leakage during material replacement.

[0034] Reference Figure 3 The pressing mechanism includes a fixed frame 21, a pressing plate 22, and an electric push rod 23. An L-shaped fixed frame 21 is fixedly installed on the support frame 2. The pressing plate 22 is located between the fixed frame 21 and the limiting plate 19. The electric push rod 23 is installed on the fixed frame 21. The output end of the electric push rod 23 passes through the fixed frame 21 and is fixedly connected to the pressing plate 22. Specifically, after the feeding bin 6 moves above the support port 3, the limiting plate 19 can be pressed by the operation of the electric push rod 23. This causes the material discharge through hole 18 to pass through the first sealing plate 15 through the movement of the sealing tube 17, so that the material in the feeding bin 6 can be discharged through the material discharge through hole 18, which facilitates the feeding of material through the support port 3 and the feeding tube 4.

[0035] In this embodiment, during use, the operator adds different materials to different feed bins 6. Then, the operator controls the first motor 14 to work. The operation of the first motor 14 drives the active dial 13 to rotate. The continuous rotation of the active dial 13 drives the pin to enter the radial groove of the grooved wheel 12, causing the grooved wheel 12 to rotate intermittently. This facilitates the operation of the first motor 14 to move multiple feed bins 6 sequentially to the support port 3 for material feeding. During the movement, the elastic force of the support spring 20 drives the second sealing disc 16 to extend into the sealing groove. The cooperation between the second sealing disc 16 and the sealing groove can seal the feed bins 6, thereby preventing material leakage during material changing. After the feed bins 6 move to the support port 3, the operation of the electric push rod 23 can press the limiting disc 19. This causes the sealing tube 17 to move and drive the discharge through hole 18 through the first sealing disc 15, allowing the material in the feed bins 6 to be discharged through the discharge through hole 18. This facilitates the feeding of materials through the support port 3 and the feed pipe 4.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick material change device for an injection molding machine, installed on the injection molding machine body (1), comprising a support frame (2), the support frame (2) being fixedly disposed on the injection molding machine body (1), and the support frame (2) having a support opening (3), characterized in that, Also includes: Feed pipe (4), the feed pipe (4) is connected between the support port (3) and the injection molding machine body (1) for feeding material into the injection molding machine body (1); Support plate (5), the support plate (5) is rotatably mounted on the support frame (2), and the support plate (5) has four feeding ports equidistantly arranged in a ring; Feeding bin (6), the top side wall of the support plate (5) is located on one side of the discharge port and the feeding bin (6) is provided with a positioning tube (7) connected to the bottom side wall of the feeding bin (6). The positioning tube (7) is aligned with the discharge port and the top side wall of the feeding bin (6) is provided with a feeding port (8). A fixing mechanism is provided between the positioning tube (7) and the support plate (5) for fixing the support plate (5) and the positioning tube (7); A Geneva (12) mechanism is provided on the support frame (2) and is used to drive the support disk (5) to rotate. A sealing mechanism is provided inside the feed hopper (6) for sealing the positioning tube (7).

2. The rapid material change device for an injection molding machine according to claim 1, characterized in that, The fixing mechanism includes: A fixing ring (9) is fixedly disposed on the outer wall of the positioning tube (7); A fixing bolt is provided, which passes through the fixing ring (9) and the support plate (5).

3. The rapid material change device for an injection molding machine according to claim 2, characterized in that, The Geneva (12) mechanism includes: The first housing (10) is fixedly mounted on the support frame (2); The drive column (11) is fixedly installed on the bottom side wall of the support plate (5), and the bottom end of the drive column (11) extends through the support frame (2) into the first housing (10). Grooved wheel (12), the grooved wheel (12) is fixedly disposed at the bottom end of the drive column (11); An active dial (13) is rotatably disposed within the first housing (10), and the grooved wheel (12) cooperates with the active dial (13). The first motor (14) is mounted on the first housing (10), and the output end of the first motor (14) is fixedly connected to the active dial (13).

4. The rapid material change device for an injection molding machine according to claim 3, characterized in that, The sealing mechanism includes: The first sealing disc (15) is fixedly disposed at the top end of the positioning tube (7); A sealing groove is formed on the bottom side wall of the first sealing disc (15). A sealing opening is formed at the bottom of the sealing groove, and the sealing opening penetrates the top side wall of the first sealing disc (15) and the feed hopper (6). The second sealing disc (16) is slidably disposed in the sealing groove. A sealing tube (17) is fixedly disposed on the top side wall of the second sealing disc (16). The top end of the sealing tube (17) extends through the sealing port and out of the feed hopper (6). The sealing tube (17) has multiple material discharge holes (18) at the bottom of its side wall. A lifting mechanism is provided between the feed hopper (6) and the sealing tube (17) for adjusting the height of the sealing tube (17).

5. A quick material change device for an injection molding machine according to claim 4, characterized in that, The lifting mechanism includes: A limiting plate (19) is fixedly disposed at the top end of the sealing tube (17); A support spring (20) is fitted onto the sealing tube (17), and the two ends of the support spring (20) are in contact with the limiting plate (19) and the feed hopper (6) respectively. The pressing mechanism is disposed on the support frame (2) and is used to press the limiting plate (19).

6. A quick material change device for an injection molding machine according to claim 5, characterized in that, The pressing mechanism includes: Fixing frame (21), the L-shaped fixing frame (21) is fixedly installed on the support frame (2); The pressing plate (22) is disposed between the fixing frame (21) and the limiting plate (19); An electric push rod (23) is mounted on the fixed frame (21). The output end of the electric push rod (23) passes through the fixed frame (21) and is fixedly connected to the pressing plate (22).

7. A quick material change device for an injection molding machine according to claim 6, characterized in that, The feed inlet (8) has a built-in feed control valve.

8. A quick material change device for an injection molding machine according to claim 7, characterized in that, The first motor (14) is a servo motor.

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