A multi-station injection mold

Abstract

This utility model belongs to the field of mold technology, and in particular to a multi-station injection mold. Addressing the problem that existing multi-station injection molds suffer from low production efficiency when using only a single material injection method, this invention proposes the following solution: A base plate with multiple outer mold boxes evenly spaced on its top. A cover plate is fitted into the top opening of each outer mold box, and a mold core is fixedly installed at the bottom of the cover plate. The injection mold also includes an injection mechanism mounted on the base plate. Multiple feed pipes are fixedly installed through the cover plate, and the injection mechanism is connected to each of the feed pipes. This utility model enables simultaneous injection of material into multiple injection molds and, after injection molding of the produced packaging bottles, automatic demolding of the molded bottles, effectively improving work efficiency during the injection molding of packaging bottles.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a multi-station injection mold. Background Technology

[0002] Injection molds are tools used to produce plastic products; they are also tools that give plastic products a complete structure and precise dimensions; injection molding is a processing method used to mass-produce certain complex-shaped parts; specifically, it refers to injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and obtaining the molded product after cooling and solidification;

[0003] In current injection molds, raw materials are often added to a single injection mold during actual use. However, if existing multi-station injection molds only use a single raw material addition method, it will lead to low production efficiency. Therefore, we propose a multi-station injection mold to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing multi-station injection molds, which suffer from low production efficiency when using only a single material injection method. Therefore, this invention proposes a multi-station injection mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-station injection mold includes a base plate, with multiple outer mold boxes evenly spaced on the top of the base plate. A cover plate is fitted into the top opening of each outer mold box, and a mold core is fixedly installed at the bottom of the cover plate. The injection mold also includes:

[0007] The injection mechanism is installed on the base plate, and multiple feed pipes are fixedly installed through the cover plate. The injection mechanism is connected to the multiple feed pipes respectively.

[0008] The moving mechanism is installed on the top of the base plate and is connected to multiple cover plates. The moving mechanism is used to drive multiple cover plates to move longitudinally at the same time, so as to move multiple mold cores into or out of their respective outer mold boxes.

[0009] In one possible design, the injection mechanism includes multiple columns, which are fixedly installed at equal intervals on the outer side of the base plate. The top of the multiple columns is fixedly installed with the same annular tube. Multiple flexible hoses are fixedly installed at equal intervals through the inner wall of one side of the annular tube. The bottom end of the flexible hose extends to the outer side of the annular tube and is fixedly connected to the top of the corresponding feed pipe. A connecting pipe is fixedly installed through the inner wall of the other side of the annular tube.

[0010] In one possible design, multiple support rods are fixedly installed at equal intervals at the bottom of the outer mold box. The bottom ends of the support rods are fixedly installed on the top of the base plate. The same connecting plate is slidably sleeved on the multiple support rods. A push rod is fixedly installed on the top of the connecting plate. The top end of the push rod extends into the outer mold box and is fixedly installed with a push plate. The push plate is tightly fitted with the inner wall of the outer mold box. A lifting rod is fixedly installed on one side of the top of the connecting plate. The lifting rod is connected to the moving mechanism.

[0011] In one possible design, a compression spring is fitted onto the support rod above the connecting plate, with the top and bottom ends of the compression spring fixedly connected to the bottom of the outer mold box and the top of the connecting plate, respectively.

[0012] In one possible design, the moving mechanism includes a drive motor fixedly mounted on the top of the base plate, a screw fixedly mounted on the output shaft of the drive motor, a nut and a transmission plate respectively fitted on the screw, the screw and the nut being threadedly connected, the nut being fixedly mounted on the top of the transmission plate, a connecting frame fixedly mounted on the transmission plate, the connecting frame being fixedly connected to multiple cover plates respectively, and a lifting rod passing through the connecting frame and slidingly connected to the connecting frame.

[0013] In one possible design, two limiting rods are symmetrically and slidably connected through the transmission plate, and the bottom ends of the two limiting rods are fixedly installed on the top of the base plate. The top ends of the two limiting rods are fixedly installed on the same fixing frame, and the top end of the screw is rotatably connected to the fixing frame.

[0014] In this application, the technical solution, when in use, involves starting a drive motor to rotate a screw. Under the threaded transmission with the nut, the nut moves downwards, which in turn moves the transmission plate and connecting frame downwards. This allows multiple mold cores to be inserted into their corresponding outer mold boxes until the cover plate and outer mold box are engaged. Afterwards, the raw material delivery pipe and connecting pipe can be connected, allowing the raw material to be delivered into the annular pipe. Through the annular pipe's dispersive delivery, the raw material is distributed into multiple flexible tubes, enabling simultaneous injection of raw material into multiple molds, effectively improving work efficiency. After the packaging bottle has cooled, the drive motor can be started to rotate the screw in the opposite direction, causing the connecting frame to move upwards. As the connecting frame moves upwards... The device can move multiple cover plates upwards, thus removing the mold core from the corresponding outer mold box. Then, as the connecting frame moves upwards to contact the top of the lifting rod, its continued upward movement moves multiple lifting rods upwards, which in turn moves the connecting plate upwards. As the connecting plate moves upwards, it drives the push plate upwards via the push rod, thereby removing the injection-molded bottle from the outer mold box and demolding the bottle. Furthermore, as the connecting plate moves upwards, it compresses multiple compression springs. Therefore, when the connecting frame moves downwards and no longer exerts upward pushing or pulling force on the lifting rods, the compressed springs, now under stress, push the connecting plate downwards. This, in turn, drives the push plate downwards to reset via the push rod, allowing for subsequent injection molding of the bottle.

[0015] Beneficial effects: In this utility model, the multi-station injection mold can connect the raw material conveying pipe and the connecting pipe through the injection mechanism. At this time, the raw material can be conveyed into the annular pipe. Then, through the dispersion conveying of the annular pipe, the raw material can be dispersed and conveyed into multiple hoses. In this way, the raw material can be injected into multiple molds at the same time, which can effectively improve work efficiency.

[0016] In this utility model, the multi-station injection mold can be driven by a moving mechanism to rotate the screw by starting the drive motor. At this time, under the thread transmission action with the nut, the transmission plate can be driven to move longitudinally. When the transmission plate moves longitudinally, it can drive the connecting frame to move longitudinally, thereby driving multiple cover plates to move longitudinally so as to achieve engagement or separation with the outer mold box.

[0017] This invention enables the simultaneous injection of raw materials into multiple injection molds, and after the injection molding of the produced packaging bottles is completed, it enables automatic demolding of the injection-molded packaging bottles, thereby effectively improving work efficiency during the injection molding of packaging bottles. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of the first-view structure of a multi-station injection mold proposed in this utility model;

[0019] Figure 2 This is a two-dimensional schematic diagram of the structure of a multi-station injection mold proposed in this utility model from a second perspective.

[0020] Figure 3 This is a three-dimensional schematic diagram of the connection structure of the outer mold box, cover plate, connecting plate and lifting rod of a multi-station injection mold proposed in this utility model.

[0021] Figure 4 This is a three-dimensional cross-sectional view of the outer mold box structure of a multi-station injection mold proposed in this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the connection structure of the push plate, push rod and connecting plate of a multi-station injection mold proposed in this utility model.

[0023] In the diagram: 1. Base plate; 2. Column; 3. Ring pipe; 4. Connecting pipe; 5. Hose; 6. Support rod; 7. Outer mold box; 8. Cover plate; 81. Mold core; 9. Push plate; 10. Push rod; 11. Connecting plate; 12. Compression spring; 13. Lifting rod; 14. Connecting frame; 15. Transmission plate; 16. Drive motor; 17. Screw; 18. Limiting rod; 19. Fixing frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figure 1-5 A mold mainly includes a base plate 1, on which multiple outer mold boxes 7 are installed at equal intervals. Each outer mold box 7 has a snap-fit ​​structure at its top opening for snapping on a cover plate 8. A mold core 81 is fixed to the bottom of the cover plate 8, which is a key component for injection molding.

[0026] To achieve the injection molding function, the mold is also equipped with an injection mechanism. This mechanism is supported by multiple columns 2, which are fixedly installed at equal intervals on the outer side of the base plate 1. The tops of the columns 2 are connected to an annular tube 3, and multiple flexible tubes 5 are fixedly installed at equal intervals on one side of the inner wall of the annular tube 3. The bottom ends of these flexible tubes 5 extend to the outer side of the annular tube 3 and connect to multiple feed pipes fixedly installed through the cover plate 8. A connecting pipe 4 is fixedly installed through the other side of the inner wall of the annular tube 3 for connecting the raw material delivery pipe. When the raw material enters the connecting pipe 4 through the delivery pipe, it is conveyed into the annular tube 3 and, through the dispersing effect of the annular tube 3, simultaneously delivers the raw material into multiple flexible tubes 5, thus achieving the function of simultaneously injecting raw material into multiple molds, greatly improving work efficiency.

[0027] In addition, the mold is designed with a moving mechanism to simultaneously drive multiple cover plates 8 to move longitudinally, thereby achieving engagement or disengagement between the mold core 81 and the outer mold box 7. The moving mechanism mainly consists of a drive motor 16, a screw 17, a transmission plate 15, a connecting frame 14, and a lifting rod 13. The drive motor 16 is fixedly mounted on the top of the base plate 1, and the screw 17 is fixedly mounted on its output shaft. A nut and the transmission plate 15 are fitted onto the screw 17, with the nut threadedly connected to the screw 17 and fixedly mounted on the top of the transmission plate 15. The connecting frame 14 is fixedly mounted on the transmission plate 15 and is fixedly connected to multiple cover plates 8. At the same time, the lifting rod 13 passes through the connecting frame 14 and is slidably connected to the connecting frame 14. When the drive motor 16 is started, the screw 17 rotates, driving the transmission plate 15 to move longitudinally through the threaded transmission with the nut. The movement of the transmission plate 15 further drives the connecting frame 14 and multiple cover plates 8 to move longitudinally, achieving engagement or disengagement between the mold core 81 and the outer mold box 7.

[0028] To ensure the stability of the transmission plate 15 during longitudinal movement, two symmetrically sliding limit rods 18 are connected through the transmission plate 15. The bottom ends of these two limit rods 18 are fixedly mounted on the top of the base plate 1, and the top ends are fixedly connected to the same fixing frame 19. The top end of the screw 17 is rotatably connected to the fixing frame 19. This design prevents the nut from rotating with the screw 17, ensuring the transmission effect between the screw 17 and the nut.

[0029] At the bottom of each outer mold box 7, multiple support rods 6 are fixed at equal intervals, with the bottom ends of the support rods 6 fixedly mounted on the top of the base plate 1. A connecting plate 11 is slidably fitted onto the multiple support rods 6, and a push rod 10 is fixed to the top of the connecting plate 11. The top end of the push rod 10 extends into the outer mold box 7 and is fixed to a push plate 9. The push plate 9 is tightly fitted against the inner wall of the outer mold box 7 and is used to push the product out after injection molding. A lifting rod 13 is also fixed to one side of the top of the connecting plate 11, and the lifting rod 13 is connected to the connecting frame 14 in the moving mechanism. When the lifting rod 13 receives the driving force of the moving mechanism, it will drive the connecting plate 11 to move upward, which in turn drives the push plate 9 to move upward through the push rod 10, removing the injection-molded packaging bottle from the outer mold box 7.

[0030] This application can be used in the field of mold technology, or in other fields applicable to this application.

[0031] Example 2: Reference Figure 3-4 An improvement upon Embodiment 1: A multi-station injection mold, applied in the field of mold technology, includes a compression spring 12 mounted on the support rod 6 above the connecting plate 11 to allow the push plate 9 to automatically reset after the lifting rod 13 no longer receives driving force. The top and bottom ends of the compression spring 12 are fixedly connected to the bottom of the outer mold box 7 and the top of the connecting plate 11, respectively. When the lifting rod 13 no longer receives upward thrust, the compression spring 12, under stress, pushes the connecting plate 11 downward, which in turn drives the push plate 9 downward to reset via the push rod 10, preparing for subsequent injection operations.

[0032] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 16 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-station injection mold, comprising a base plate (1), wherein a plurality of outer mold boxes (7) are equally spaced on the top of the base plate (1), a cover plate (8) is fitted at the top opening of the outer mold box (7), and a mold core (81) is fixedly installed at the bottom of the cover plate (8), characterized in that, The injection mold also includes: The injection mechanism is installed on the base plate (1), and multiple feed pipes are fixedly installed through the cover plate (8). The injection mechanism is connected to the multiple feed pipes respectively. The moving mechanism is installed on the top of the base plate (1) and is connected to multiple cover plates (8) respectively. The moving mechanism is used to drive multiple cover plates (8) to move longitudinally at the same time, so as to move multiple mold cores (81) into or out of the corresponding outer mold box (7) respectively.

2. The multi-station injection mold according to claim 1, characterized in that, The injection mechanism includes multiple columns (2), which are fixedly installed at equal intervals on the outside of the base plate (1). The top of the multiple columns (2) is fixedly installed with the same annular pipe (3). Multiple flexible hoses (5) are fixedly installed at equal intervals through the inner wall of one side of the annular pipe (3). The bottom end of the flexible hose (5) extends to the outside of the annular pipe (3) and is fixedly connected to the top of the corresponding feed pipe. A connecting pipe (4) is fixedly installed through the inner wall of the other side of the annular pipe (3).

3. A multi-station injection mold according to claim 1, characterized in that, Multiple support rods (6) are fixedly installed at equal intervals at the bottom of the outer mold box (7). The bottom end of the support rod (6) is fixedly installed on the top of the base plate (1). The same connecting plate (11) is slidably sleeved on the multiple support rods (6). A push rod (10) is fixedly installed on the top of the connecting plate (11). The top end of the push rod (10) extends into the outer mold box (7) and is fixedly installed with a push plate (9). The push plate (9) is tightly fitted with the inner wall of the outer mold box (7). A lifting rod (13) is fixedly installed on one side of the top of the connecting plate (11). The lifting rod (13) is connected to the moving mechanism.

4. A multi-station injection mold according to claim 3, characterized in that, A compression spring (12) is sleeved on the support rod (6) above the connecting plate (11). The top and bottom ends of the compression spring (12) are fixedly connected to the bottom of the outer mold box (7) and the top of the connecting plate (11), respectively.

5. A multi-station injection mold according to claim 1, characterized in that, The moving mechanism includes a drive motor (16) fixedly installed on the top of the base plate (1). A screw (17) is fixedly installed on the output shaft of the drive motor (16). A nut and a transmission plate (15) are respectively sleeved on the screw (17). The screw (17) is threadedly connected to the nut. The nut is fixedly installed on the top of the transmission plate (15). A connecting frame (14) is fixedly installed on the transmission plate (15). The connecting frame (14) is fixedly connected to multiple cover plates (8). The lifting rod (13) passes through the connecting frame (14) and is slidably connected to the connecting frame (14).

6. A multi-station injection mold according to claim 5, characterized in that, Two limiting rods (18) are symmetrically slidably connected through the transmission plate (15), and the bottom ends of the two limiting rods (18) are fixedly installed on the top of the base plate (1). The top ends of the two limiting rods (18) are fixedly installed on the same fixing frame (19), and the top end of the screw (17) is rotatably connected to the fixing frame (19).

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