Discharging device of bottle preform injection molding machine

Abstract

The utility model discloses a blanking device of a bottle preform injection molding machine, which comprises a transfer module, a transfer table is arranged on the transfer module towards one side of a mold in a transfer manner, a clamping hole is formed in the side wall of the transfer table, a suction nozzle is arranged in the clamping hole, the transfer table is connected with an air pump mechanism used for providing negative pressure for the suction nozzle, and the air pump mechanism is connected with the transfer module. The transfer table is adapted to be capable of ejecting towards one side of the bottle preform, so that the bottle preform is jointed and enters the clamping hole; a plurality of clamping holes are arranged in an array mode. And after injection molding is completed, the transfer table is driven by the transfer module to be opposite to the mold, and then the transfer table is ejected out, so that the bottle preform is clamped into the clamping hole. And the air pump mechanism drives the suction nozzle to generate negative pressure, so that the bottle preform is adsorbed in the clamping hole, and then the transfer table retreats from the injection molding machine to realize blanking of the bottle preform. Compared with the prior art, a plurality of bottle preforms are adsorbed and clamped at the same time in a negative pressure adsorption mode, the discharging efficiency is higher, and the bottle preforms are not prone to being damaged.

Description

Technical Field

[0001] This utility model relates to the field of bottle production technology, and in particular, to a preform injection molding machine feeding device. Background Technology

[0002] Preform injection molding machines are automated equipment specifically designed for producing PET preforms. They melt raw materials at high temperatures and precisely inject them into molds, where they are then rapidly cooled to form standardized tubular semi-finished products. Their core advantages lie in high-precision control and high production capacity, adapting to diverse needs in beverage, food, cosmetic, and pharmaceutical packaging. The equipment employs an intelligent servo system to optimize energy consumption, and some models integrate waste recycling to reduce resource waste. It also supports rapid switching between multiple molds to enhance production flexibility. Automated detection and temperature control technologies ensure consistent quality, making it a core piece of equipment in the modern packaging industry.

[0003] After injection molding, the preform needs to be ejected from the mold using a hydraulic or pneumatic ejection device. On the one hand, this ejection method is inefficient; on the other hand, the ejector pins can easily leave fine marks on the preform, resulting in a decrease in the quality of the produced bottles. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a preform injection molding machine feeding device.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A preform injection molding machine unloading device includes a transfer module. The transfer module is provided with a transfer platform that can be transferred towards the mold side. The side wall of the transfer platform is provided with a clamping hole. A suction nozzle is provided in the clamping hole. An air pump mechanism for providing negative pressure to the suction nozzle is connected to the transfer platform. The transfer platform is adapted to be pushed towards the preform side so that the preform can be engaged into the clamping hole. Several clamping holes are arranged in an array.

[0007] Preferably, the air pump mechanism is also adapted to drive the nozzle to eject airflow.

[0008] Preferably, a conveyor belt is provided below the transfer module, and the conveyor belt is adapted to receive the falling preforms.

[0009] Preferably, the air pump mechanism is adapted to simultaneously drive several of the nozzles to eject airflow.

[0010] Preferably, the air pump mechanism is adapted to drive the nozzles in the same row to eject airflow in a row, and the airflow from the nozzles in different rows is ejected sequentially.

[0011] Preferably, it also includes a receiving box, which is opposite to the unloading position of the transfer table. The receiving box has a plurality of receiving channels defined vertically inside. The receiving channels include opposite inlets and outlets. The bottom surface of the receiving channels is constructed as a curved surface that slopes from the inlet to the outlet, and the curvatures of the plurality of curved surfaces are different, so that the order in which the preforms in different receiving channels fall out of the outlet is different.

[0012] Preferably, a plurality of receiving plates are arranged vertically inside the receiving box, and the receiving channel is defined between adjacent receiving plates. Limiting pins are provided on the inner wall of the receiving box, and the receiving plates abut against the limiting pins.

[0013] Preferably, the inner wall of the receiving box is provided with a plurality of mounting holes along the vertical direction, and the limiting pin is installed in the mounting holes.

[0014] The beneficial effects of this invention are as follows: After injection molding, the transfer stage, driven by the transfer module, faces the mold and then ejects, causing the preform to be inserted into the clamping hole. The air pump mechanism then drives the suction nozzle to generate negative pressure, causing the preform to be adsorbed into the clamping hole. Finally, the transfer stage withdraws from the injection molding machine, thus unloading the preform. Compared with existing technologies, this invention achieves simultaneous adsorption and clamping of multiple preforms through negative pressure adsorption, resulting in higher unloading efficiency and less risk of damage to the preforms. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0016] Figure 2 This is a schematic diagram of the transfer stage.

[0017] Figure 3 This is a schematic diagram of the material receiving box.

[0018] Reference numerals: 1. Transfer module; 2. Transfer platform; 3. Clamping hole; 4. Suction nozzle; 5. Conveyor belt; 6. Receiving box; 7. Receiving channel; 8. Inlet; 9. Outlet; 10. Receiving plate; 11. Limit pin; 12. Mounting hole. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] A preform injection molding machine unloading device includes a frame disposed beside the injection molding machine, a transfer module 1 mounted on the frame, and a transfer platform 2 mounted on the execution end of the transfer module 1. The side wall of the transfer platform 2 has several clamping holes 3, which can be arranged in an array. A suction nozzle 4 is specifically disposed within each clamping hole 3, and an air pump mechanism (not shown) is also connected to the transfer platform 2. The air pump mechanism and the suction nozzles 4 are connected by pipelines.

[0021] The connection between the air pump mechanism and the suction nozzle 4 is existing technology. For example, the air pump mechanism can provide negative pressure to the suction nozzle 4 by connecting an air tube to each suction nozzle 4. Alternatively, several suction nozzles 4 can be connected to the same cavity, and the air pump mechanism can be connected to the cavity via an air tube. Regardless of the method used, it is sufficient to ensure that gas flow can occur between the air pump mechanism and the suction nozzle 4, which will not be elaborated further in this disclosure.

[0022] After injection molding is completed, the transfer module 1 can drive the transfer stage 2 into the injection molding machine, especially the transfer stage 2 will be opposite to the mold. Subsequently, the transfer stage 2 can also be ejected to the preform side by the ejection device or the drive of the transfer module 1 in another direction. At this time, the preform will be stuck in the clamping hole 3, and the suction nozzle 4 will then be provided with negative pressure to achieve adsorption of the preform.

[0023] The preform can be removed from the mold by reversing the transfer stage 2 that holds the preform, and then the mold is closed again for injection molding.

[0024] The transfer module 1 may specifically include cylinders, hydraulic cylinders or linear motors, etc., which are existing technologies and will not be described in detail in this disclosure.

[0025] In some embodiments, an air pump mechanism may be adapted to apply positive pressure airflow to the nozzle 4, so that the nozzle 4 can eject airflow and blow out the preform in the clamping hole 3 to complete the unloading.

[0026] For example, a conveyor belt 5 can be installed below the transfer module 1 to receive the falling preforms and automate their transport to the next process. During the braking action, the air pump mechanism can simultaneously drive several nozzles 4 to eject airflow, causing several preforms on the transfer platform 2 to fall onto the conveyor belt 5 at the same time. Alternatively, the air pump mechanism can be adapted to drive the nozzles 4 in a row to eject airflow sequentially from different rows. This allows preforms at different heights and in different rows to fall onto the conveyor belt 5 sequentially, reducing the likelihood of collisions between preforms on the conveyor belt 5.

[0027] However, the sequential dropping of preforms in rows leads to reduced material feeding efficiency. To address this, this disclosure preferably includes a receiving box 6 opposite to the transfer platform 2. Specifically, the receiving box 6 contains several receiving plates 10 arranged vertically, with receiving channels 7 defined between adjacent receiving plates 10. In particular, the receiving channels 7 include opposing inlets 8 and outlets 9, and the receiving plates 10 are inclined from high to low from the inlet 8 to the outlet 9, providing a curved surface on the top of the receiving plates 10 for the convenient sliding of preforms.

[0028] The different curvatures of the various surfaces result in different sliding speeds of the preforms in different receiving channels 7, but the preforms on the transfer platform 2 can be pushed out by the airflow at the same time, which improves the feeding efficiency.

[0029] In a specific example, the inner wall of the receiving box 6 has several vertical mounting holes 12, and each mounting hole 12 contains a limiting pin 11. Specifically, the receiving plate 10 abuts against the limiting pin 11, and the curvature of the receiving plate 10 changes accordingly when the limiting pin 11 is at different heights. This method makes the installation of the receiving plate 10 more convenient and allows for easy adjustment of the receiving plate 10 to achieve the desired curvature.

[0030] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A preform injection molding machine feeding device, characterized in that: The device includes a transfer module (1), on which a transfer platform (2) is provided for transfer towards the mold side. A clamping hole (3) is provided on the side wall of the transfer platform (2), and a suction nozzle (4) is provided in the clamping hole (3). An air pump mechanism for providing negative pressure to the suction nozzle (4) is connected to the transfer platform (2). The transfer platform (2) is adapted to be pushed out towards the preform side so that the preform can be engaged and enter the clamping hole (3). The clamping holes (3) are arranged in an array of several.

2. The preform injection molding machine feeding device according to claim 1, characterized in that: The air pump mechanism is also adapted to drive the nozzle (4) to eject airflow.

3. The preform injection molding machine feeding device according to claim 2, characterized in that: A conveyor belt (5) is provided below the transfer module (1), and the conveyor belt (5) is adapted to receive the falling preforms.

4. The preform injection molding machine feeding device according to claim 2 or 3, characterized in that: The air pump mechanism is adapted to simultaneously drive several of the suction nozzles (4) to eject airflow.

5. The preform injection molding machine feeding device according to claim 2 or 3, characterized in that: The air pump mechanism is adapted to drive the nozzles (4) in the same row to spray airflow in a row, and the airflow of the nozzles (4) in different rows is sprayed out sequentially.

6. The preform injection molding machine feeding device according to claim 4, characterized in that: It also includes a receiving box (6), which is opposite to the unloading position of the transfer platform (2). The receiving box (6) has several receiving channels (7) defined vertically inside. The receiving channels (7) include opposite inlets (8) and outlets (9). The bottom surface of the receiving channel (7) is a curved surface that is inclined from the inlet (8) to the outlet (9), and the curvatures of the several curved surfaces are different so that the bottle preforms in different receiving channels (7) fall out of the outlet (9) in different orders.

7. The preform injection molding machine feeding device according to claim 6, characterized in that: The receiving box (6) has several receiving plates (10) arranged vertically inside, and the receiving channel (7) is defined between adjacent receiving plates (10). The inner wall of the receiving box (6) is provided with a limiting pin (11), and the receiving plate (10) abuts against the limiting pin (11).

8. The preform injection molding machine feeding device according to claim 7, characterized in that: The receiving box (6) has several mounting holes (12) arranged vertically on its inner wall, and the limiting pin (11) is installed in the mounting holes (12).

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