A multi-directional water-cooled blow molding equipment for plastic buckets

Abstract

This disclosure relates to the field of blow molding technology. One embodiment of this disclosure provides a multi-directional water-cooled blow molding device for plastic buckets, comprising: a processing table, a blow molding disc disposed on the processing table, a bidirectional drive assembly disposed at the bottom of the processing table, and a drive limiting assembly disposed on the processing table; the bidirectional drive assembly includes a movable groove, which is opened on the processing table and located at opposite ends of the blow molding disc, and a linkage frame is disposed inside the movable groove; a chassis is disposed at the bottom of the processing table, and a drive shaft is disposed on the chassis, the drive shaft being fixedly connected to a drive gear. Through the above technical solution, the technical problems of early blow molding equipment in the prior art, where mold opening and closing relied mainly on a single drive cylinder or a single transmission structure, only achieving linear drive in a single direction, resulting in slow mold closing / separation speeds, poor synchronization, and in some equipment, due to the lack of a stable limiting structure, mold deviation during movement, are easily caused.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of blow molding technology, and more specifically, to a multi-directional water-cooled blow molding equipment for plastic buckets. Background Technology

[0002] In the plastic bucket manufacturing industry, blow molding is one of the mainstream processes. Its principle involves extruding or injection molding molten plastic raw materials into a tubular preform, then using high-pressure gas to inflate the preform and adhere it to the inner wall of a mold. After cooling and solidification, the desired shape of the plastic bucket is obtained. With the expansion of plastic bucket applications, the requirements for production efficiency, molding precision, structural strength, and cooling uniformity are constantly increasing. Traditional blow molding equipment is gradually revealing the following technical pain points:

[0003] Early blow molding equipment relied on a single drive cylinder or a single transmission structure for mold opening and closing, which could only achieve linear drive in one direction. This resulted in slow mold closing / separation speed and poor synchronization. Some equipment lacked a stable limiting structure, and the mold was prone to deviation during movement. This not only affected the molding accuracy of the plastic bucket (such as misalignment of seams and uneven wall thickness), but also caused equipment damage due to mold collisions, increasing maintenance costs.

[0004] Some equipment lacks buffer or limiting structures for the connection between the transmission components and the worktable. After long-term high-speed operation, vibration can easily lead to a decrease in meshing accuracy, which in turn affects the positioning accuracy of the mold. At the same time, the molds of traditional equipment are mostly integral structures. When changing to different specifications of plastic bucket molds, the whole thing needs to be disassembled, which is cumbersome, has poor adaptability, and is difficult to meet the production needs of multiple varieties and small batches. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a water-cooled blow molding equipment for plastic buckets with multiple airflow directions. This solves the technical problems in the prior art where the mold opening and closing of early blow molding equipment mostly relied on a single drive cylinder or a single transmission structure, which could only achieve linear drive in a single direction. This resulted in slow mold closing / separation speed, poor synchronization, and some equipment was prone to mold displacement during movement due to the lack of a stable limiting structure.

[0006] According to one aspect, at least one embodiment of this disclosure provides a multi-directional water-cooled blow molding apparatus for plastic buckets, comprising:

[0007] A processing table, wherein a blow molding tray is provided on the processing table;

[0008] A bidirectional drive assembly is disposed at the bottom of the processing table;

[0009] A drive limiting component is disposed on the processing table;

[0010] The bidirectional drive assembly includes a movable slot, which is opened on the processing table and located at opposite ends of the blow molding disc. A linkage frame is provided inside the movable slot, and a drive rack is provided on the side wall of the linkage frame. A drive gear is provided on the drive rack and meshes with the drive rack. A chassis is provided at the bottom of the processing table, and a drive shaft is provided on the chassis. The drive shaft is fixedly connected to the drive gear.

[0011] As a further technical solution, a support frame is provided on the chassis, and the top of the support frame is fixedly connected to the processing table.

[0012] As a further technical solution, the drive limiting component includes a limiting plate, which is disposed on the linkage frame. A limiting groove is opened on the limiting plate, and a limiting wheel is disposed inside the limiting groove. The top of the limiting wheel is in contact with the processing table.

[0013] As a further technical solution, the processing table is provided with two shaping covers, which are semi-circular in structure and are joined together to form a barrel-shaped structure.

[0014] As a further technical solution, the processing table has a blow molding positioning cavity, and the blow molding disc is embedded inside the blow molding positioning cavity.

[0015] As a further technical solution, the number of driving racks is two, and the two driving racks respectively mesh on opposite sides of the driving gear.

[0016] As a further technical solution, a rotating disk is provided on the top of the drive gear, and the rotating disk is connected to the bottom surface of the processing table by a bearing limiting sleeve.

[0017] As a further technical solution, the two opposing surfaces of the shaping covers are respectively provided with positioning grooves and positioning strips, and the positioning strips are embedded inside the positioning grooves.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the bidirectional drive assembly, through the meshing of the drive gear and the drive rack, can simultaneously drive the linkage frames at both ends of the blow molding disc to move, achieving rapid opening and closing of the two molding covers. Compared with the traditional unidirectional drive method, this shortens the mold opening and closing time and speeds up the production cycle. At the same time, the multi-directional water cooling design enables rapid cooling and shaping of various parts of the plastic bucket, reducing cooling waiting time and further improving overall production efficiency. The support frame on the chassis is fixedly connected to the processing table, which can enhance the stability of the overall equipment structure. The self-rotating disc at the top of the drive gear is limited by the bearing and the bottom surface of the processing table, which can effectively reduce the axial offset and shaking when the drive gear rotates, reduce the wear of the gear and rack, ensure the stability and reliability of the transmission system, and extend the service life of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is a cross-sectional view of the machining table disclosed herein;

[0023] Figure 3 This is a side view of the machining table disclosed herein;

[0024] In the diagram: 1. Processing table; 2. Blow molding disc; 3. Two-way drive assembly; 3-1. Movable groove; 3-2. Linkage frame; 3-3. Drive rack; 3-4. Drive gear; 3-5. Chassis; 3-6. Drive shaft; 3-7. Support frame; 4. Drive limit assembly; 4-1. Limiting disc; 4-2. Limiting groove; 4-3. Limiting wheel; 4-4. Shaping cover; 5. Blow molding positioning cavity; 6. Rotating disc; 7. Positioning groove; 8. Positioning strip. Detailed Implementation

[0025] The present disclosure 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 disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" 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 disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly 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.

[0029] 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 disclosure.

[0030] 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.

[0031] like Figures 1-3 As shown, it illustrates a multi-directional water-cooled blow molding apparatus for plastic buckets according to this disclosure, comprising:

[0032] Processing table 1, on which a blow molding tray 2 is provided;

[0033] The bidirectional drive assembly 3 is located at the bottom of the processing table 1;

[0034] Drive limit component 4 is installed on the processing table 1;

[0035] The bidirectional drive assembly 3 includes a movable slot 3-1, which is located on the processing table 1 and at opposite ends of the blow molding disc 2. A linkage frame 3-2 is provided inside the movable slot 3-1, and a drive rack 3-3 is provided on the side wall of the linkage frame 3-2. A drive gear 3-4 is provided on the drive rack 3-3, and the drive gear 3-4 meshes with the drive rack 3-3. A chassis 3-5 is provided at the bottom of the processing table 1, and a drive shaft 3-6 is provided on the chassis 3-5. The drive shaft 3-6 is fixedly connected to the drive gear 3-4.

[0036] The drive limit assembly 4 includes a limit plate 4-1, which is mounted on the linkage frame 3-2. A limit groove 4-2 is opened on the limit plate 4-1, and a limit wheel 4-3 is set inside the limit groove 4-2. The top of the limit wheel 4-3 is in contact with the processing table 1.

[0037] In some examples, a chassis 3-5 is installed at the bottom of the processing table 1, and a drive shaft 3-6 is mounted on the chassis 3-5, ensuring it can rotate freely. A drive gear 3-4 is fixed to the top of the drive shaft 3-6, allowing it to rotate synchronously with the drive shaft 3-6. Movable slots 3-1 are opened at opposite ends of the blow molding disc 2 on the processing table 1. A connecting frame 3-2 is installed inside the movable slot 3-1, allowing it to slide smoothly within the slot. A drive rack 3-3 is installed on the side wall of the connecting frame 3-2. The position of the drive rack 3-3 is adjusted to mesh with the drive gear 3-4, ensuring precise transmission. To ensure the meshing accuracy of the two drive racks 3-3 with both sides of the drive gear 3-4, adjustments can be made during installation. Use professional measuring tools for measurement and calibration. Install the limiting plate 4-1 on the linkage frame 3-2. The limiting groove 4-2 on the limiting plate 4-1 should ensure that the limiting wheel 4-3 can roll freely in it without shaking. Install the limiting wheel 4-3 so that its top is in close contact with the bottom surface of the processing table 1. In this way, when the linkage frame 3-2 moves, the limiting wheel 4-3 can roll along the bottom surface of the processing table 1, which plays a role in stabilization and limiting, preventing the linkage frame 3-2 from deviating during the movement. Place the plastic raw material in a suitable position to ensure that the raw material can smoothly enter the blow molding process. For example, if the equipment is connected to a feeding device, it is necessary to check whether the connection between the feeding device and the blow molding plate 2 is smooth, to ensure that the raw material can be accurately delivered to the blow molding plate 2 for subsequent processing.

[0038] When the drive unit is activated (e.g., a motor connected to drive shaft 3-6), drive shaft 3-6 drives drive gear 3-4 to rotate. The movement of drive rack 3-3 then drives linkage frame 3-2 to slide within movable groove 3-1, achieving a bidirectional drive effect and providing power support for subsequent blow molding operations. The movement speed of linkage frame 3-2 can be controlled by adjusting the speed of the drive unit. During the movement of linkage frame 3-2, the limiting wheel 4-3 on the limiting plate 4-1 remains in contact with the bottom surface of processing table 1. The limiting wheel 4-3 rolls along the bottom surface of processing table 1, thus restricting the movement direction of linkage frame 3-2, allowing it to move only in a straight line along movable groove 3-1. On the one hand, the movement of the limiting wheel 4-3 reduces the friction between the linkage frame 3-2 and the processing table 1, ensuring that the linkage frame 3-2 moves more smoothly and steadily, and improving the stability of the equipment operation. When the plastic raw material is prepared on the blow molding plate 2, high-pressure gas is blown into the raw material, causing the raw material to expand in all directions under pressure. At this time, the barrel-shaped structure formed by the two spliced ​​molding covers 4-4 acts as a mold. Under the action of high-pressure gas, the plastic raw material adheres to the inner wall of the molding cover 4-4 and gradually forms the shape of a plastic barrel. During the blow molding process, the blow molding pressure and time can be precisely controlled according to the specific requirements of the plastic barrel to ensure the quality and dimensional accuracy of the plastic barrel.

[0039] like Figures 1-3 As shown in the figure, this embodiment proposes that a support frame 3-7 be provided on the chassis 3-5, and the top of the support frame 3-7 be fixedly connected to the processing table 1.

[0040] In some examples, a support frame 3-7 is installed on the chassis 3-5, and the top of the support frame 3-7 is fixedly connected to the processing table 1. The connection is ensured to be firm by bolts and other connectors, providing stable support for the processing table 1 and enhancing the overall stability of the equipment.

[0041] For example, such as Figure 1 As shown, there are two shaping covers 4-4 on the processing table 1. The two shaping covers 4-4 are semi-circular structures and are spliced ​​together to form a barrel-shaped structure.

[0042] In some examples, two semi-circular shaping covers 4-4 are mounted on the processing table 1, so that they are joined together to form a barrel-shaped structure.

[0043] For example, such as Figure 3 As shown, the processing table 1 has a blow molding positioning cavity 5, and the blow molding plate 2 is embedded inside the blow molding positioning cavity 5.

[0044] In some examples, the processing table 1 is placed stably in the work area to ensure that it is stable and does not wobble, and the blow molding plate 2 is embedded into the pre-cut blow molding positioning cavity 5 on the processing table 1 so that the blow molding plate 2 fits tightly with the processing table 1 and is accurately positioned.

[0045] For example, such as Figure 2 As shown, there are two drive racks 3-3, which mesh on opposite sides of the drive gear 3-4.

[0046] In some examples, since the drive gear 3-4 meshes with the drive racks 3-3 on both sides, according to the gear and rack transmission principle, the rotation of the drive gear 3-4 will drive the drive rack 3-3 to move along the direction of the movable slot 3-1.

[0047] For example, such as Figure 2 As shown, a rotating disk 6 is provided on the top of the drive gear 3-4, and the rotating disk 6 is connected to the bottom surface of the processing table 1 by a bearing limiting sleeve.

[0048] In some examples, when the drive gear 3-4 rotates and drives the drive rack 3-3 and the connecting frame 3-2 to move, the spindle 6 can rotate synchronously with the drive gear 3-4. At the same time, it forms a stable rotational connection with the processing table 1 with the help of bearings. On the one hand, it can support and limit the top of the drive gear 3-4, preventing the drive gear 3-4 from axially shifting or shaking during high-speed rotation, ensuring the stability and accuracy of the meshing between the drive gear 3-4 and the drive rack 3-3, thereby ensuring the smooth and reliable movement of the connecting frame 3-2. On the other hand, the rotation of the spindle 6 can reduce the friction and wear between the drive gear 3-4 and the processing table 1, extend the service life of the drive gear 3-4 and the processing table 1, and improve the overall smoothness and durability of the equipment.

[0049] For example, such as Figure 1 As shown, the two shaping covers 4-4 are respectively provided with positioning grooves 7 and positioning strips 8 on their opposite sides, and the positioning strips 8 are embedded in the interior of the positioning grooves 7.

[0050] In some examples, during installation, attention should be paid to the fit between the positioning grooves 7 and the positioning strips 8 on the opposite surfaces of the two shaping covers 4-4. The positioning strips 8 should be accurately embedded into the positioning grooves 7 to ensure that the shaping covers 4-4 are tightly spliced ​​and accurately positioned, providing a precise mold shape for subsequent blow molding.

[0051] In use, the equipment is powered by the drive shaft 3-6 on the chassis 3-5. When the drive shaft 3-6 rotates, it drives the fixed drive gear 3-4 to rotate synchronously. Since there are two drive racks 3-3 meshing on both sides of the drive gear 3-4 (belonging to the connecting frames 3-2 at both ends of the blow molding plate 2), according to the gear and rack meshing principle, the rotation of the drive gear 3-4 will be converted into the opposite linear motion of the two drive racks 3-3 (one rack moves forward and the other rack moves backward), which in turn drives the connecting frame 3-2 to move back and forth in a straight line in the movable groove 3-1 of the processing table 1.

[0052] When the linkage frame 3-2 moves, the limiting plate 4-1 on it moves along with it. The limiting wheel 4-3 in the limiting groove 4-2 rolls in contact with the bottom surface of the processing table 1, which not only restricts the movement direction of the linkage frame 3-2 (ensuring straight movement along the movable groove 3-1), but also reduces the frictional resistance during the movement. At the same time, the self-rotating disk 6 on the top of the drive gear 3-4 is fitted with the bottom surface of the processing table 1 through the bearing, which further stabilizes the axial position of the drive gear 3-4, prevents it from deviating during high-speed rotation, and ensures the accuracy of gear and rack meshing.

[0053] When the linkage frame 3-2 moves, it drives the two semi-circular molding covers 4-4 associated with it to move synchronously. When the two linkage frames 3-2 are relatively close, the molding covers 4-4 are spliced ​​into a complete barrel-shaped structure through the cooperation of the positioning strip 8 and the positioning groove 7, forming the molding mold of the plastic barrel. When the linkage frame 3-2 moves in the opposite direction, the molding covers 4-4 separate, making it easy to take out the molded plastic barrel. After the plastic raw material is preheated and softened on the blow molding plate 2, it is positioned inside the molding cover 4-4 through the blow molding positioning cavity 5. The equipment introduces high-pressure gas into the softened raw material, causing the raw material to expand under the action of gas pressure and tightly fit the inner wall of the molding cover 4-4, thereby forming a plastic barrel prototype with the same shape as the molding cover 4-4.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure 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 solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A water-cooled multi-wind direction blow molding apparatus for plastic drums, characterized by, include: A processing table (1) is provided with a blow molding tray (2); A bidirectional drive assembly (3) is disposed at the bottom of the processing table (1); A drive limiting component (4) is disposed on the processing table (1); The bidirectional drive assembly (3) includes a movable slot (3-1) which is located on the processing table (1) and at opposite ends of the blow molding disc (2). A linkage frame (3-2) is provided inside the movable slot (3-1). A drive rack (3-3) is provided on the side wall of the linkage frame (3-2). A drive gear (3-4) is provided on the drive rack (3-3). The drive gear (3-4) meshes with the drive rack (3-3). A chassis (3-5) is provided at the bottom of the processing table (1). A drive shaft (3-6) is provided on the chassis (3-5). The drive shaft (3-6) is fixedly connected to the drive gear (3-4).

2. The multi-directional water-cooled blow molding equipment for plastic buckets according to claim 1, characterized in that, A support frame (3-7) is provided on the chassis (3-5), and the top of the support frame (3-7) is fixedly connected to the processing table (1).

3. The multi-directional water-cooled blow molding equipment for plastic buckets according to claim 1, characterized in that, The drive limiting component (4) includes a limiting plate (4-1), which is disposed on the linkage frame (3-2). A limiting groove (4-2) is opened on the limiting plate (4-1), and a limiting wheel (4-3) is disposed inside the limiting groove (4-2). The top of the limiting wheel (4-3) is in contact with the processing table (1).

4. The multi-directional water-cooled blow molding equipment for plastic buckets according to claim 3, characterized in that, The processing table (1) is provided with a shaping cover (4-4). There are two shaping covers (4-4). The two shaping covers (4-4) are semi-circular structures and are spliced ​​together to form a barrel-shaped structure.

5. The multi-direction water-cooled blow molding equipment for plastic buckets according to claim 1, characterized in that, The processing table (1) has a blow molding positioning cavity (5), and the blow molding plate (2) is embedded inside the blow molding positioning cavity (5).

6. The multi-directional water-cooled blow molding equipment for plastic buckets according to claim 1, characterized in that, There are two drive racks (3-3), and the two drive racks (3-3) mesh with opposite sides of the drive gear (3-4).

7. The multi-directional water-cooled blow molding equipment for plastic buckets according to claim 1, characterized in that, The top of the drive gear (3-4) is provided with a rotating disk (6), and the rotating disk (6) is connected to the bottom surface of the processing table (1) by a bearing limiting assembly.

8. A multi-direction water-cooled blow molding equipment for plastic buckets according to claim 4, characterized in that, The two shaping covers (4-4) are respectively provided with positioning grooves (7) and positioning strips (8) on their opposite sides, and the positioning strips (8) are embedded in the interior of the positioning grooves (7).

Images