Automatic feeding injection molding machine for plastic bucket production

Abstract

The present disclosure relates to the technical field of plastic bucket production, and an embodiment of the present disclosure provides an automatic feeding injection molding machine for plastic bucket production, which comprises an injection molding machine body and an outer frame, the outer frame is arranged outside the injection molding machine body, a material box is arranged on the outer frame, a feeding assembly is arranged on the material box and the outer frame, and a residual collection assembly is arranged on the outer frame; the feeding assembly comprises an extension frame which is fixed in an inclined manner on the surface of the injection molding machine body, the extension frame is internally provided with a conveying belt, the upper end of the conveying belt is located at the feeding part of the injection molding machine body, and the surface of the conveying belt is provided with a plurality of feeding hoppers. Through the above technical scheme, the technical problem that the existing injection molding machine for plastic bucket production is generally inconvenient to feed and relies on manual or semi-manual mode to complete feeding is solved, which not only is difficult to adapt to batch production demand, but also is easy to affect production rhythm and product quality.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of plastic bucket production, and more specifically, to an automatic feeding injection molding machine for plastic bucket production. Background Technology

[0002] In the mass production of plastic buckets, injection molding machines are the core equipment for melting and molding raw materials. The feeding process, as a pre-process of injection molding, directly determines production efficiency and the quality of the finished plastic buckets. A stable supply of plastic granules to the injection molding machine's hopper is essential to ensure the continuous operation of subsequent melting and injection molding processes. As the market demand for plastic buckets shifts towards more specifications and higher output, the feeding shortcomings of traditional injection molding machines are becoming increasingly apparent: existing injection molding machines for plastic bucket production generally suffer from inconvenient feeding methods, relying heavily on manual or semi-manual methods. This not only makes it difficult to adapt to the needs of mass production but also easily affects production rhythm and product quality.

[0003] Traditional injection molding machines often require manual handling of bagged plastic granules, pouring the raw material one by one into the hopper at the top of the machine. This method is labor-intensive, especially in the production of plastic buckets where a continuous supply is needed. Workers have to frequently move back and forth, and fatigue can easily lead to uneven feeding intervals. Furthermore, the material is prone to spillage during manual pouring, causing waste and generating dust that pollutes the workshop environment. In addition, manual feeding makes it difficult to accurately control the amount of material fed at one time. Too much material in the hopper can cause blockages at the feed inlet, while too little can lead to the injection molding machine "dry burning" or defects such as insufficient material or uneven wall thickness in the finished plastic buckets, requiring frequent shutdowns for adjustments and further reducing production efficiency.

[0004] Therefore, developing an automatic feeding injection molding machine for plastic bucket production that can replace manual labor and achieve stable and continuous material supply has become an urgent need to optimize the plastic bucket production process and improve efficiency and quality. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an automatic feeding injection molding machine for plastic bucket production, which solves the problem that existing injection molding machines for plastic bucket production are generally inconvenient to feed, and mostly rely on manual or semi-manual methods to complete the feeding. This not only makes it difficult to adapt to the needs of mass production, but also easily affects the production rhythm and product quality.

[0006] According to one aspect, at least one embodiment of this disclosure provides an automatic feeding injection molding machine for plastic bucket production, comprising: The injection molding machine body and its outer frame, wherein the outer frame is disposed on the outside of the injection molding machine body; A material bin and a feeding assembly, wherein the material bin is mounted on the outer frame and the feeding assembly is mounted on both the material bin and the outer frame; A residue collection component, which is mounted on the outer frame; The feeding assembly includes an extension frame, which is fixed at an angle to the surface of the injection molding machine body. A conveyor belt is provided inside the extension frame, with the upper end of the conveyor belt located at the feeding section of the injection molding machine body. Several feeding hoppers are provided on the surface of the conveyor belt.

[0007] As a further technical solution, a discharge pipe is provided on the side surface of the material box, the lower end of the discharge pipe is located above the conveyor belt, and a rotating shaft is horizontally rotatably connected inside the material box, the rotating shaft being driven to rotate by electricity.

[0008] As a further technical solution, a pusher frame is provided on the rotating shaft. The pusher frame is located on one side of the connection between the discharge pipe and the material box. A stud driven by electricity is vertically installed inside the material box.

[0009] As a further technical solution, a movable block is vertically slidably connected to the inner side of the material box. The movable block is connected to the stud by a threaded engagement. A material support frame is provided on the side end face of the movable block. The material support frame has an overall L-shaped structure and slides and seals against the inner wall of the material box.

[0010] According to another aspect, in at least one embodiment of the present invention, the residue collection assembly includes a docking cover, the docking cover being fixed to the outer wall of the material box, the docking cover being located on one side of the lower end of the extension frame, and a gap being left between the docking cover and the lower end of the extension frame.

[0011] As a further technical solution, a pair of sliding mounting slots are laterally opened on the surface of the outer frame, and a recycling box is horizontally slidably inserted into the sliding mounting slot. The recycling box is located below the gap between the docking cover and the extension frame.

[0012] As a further technical solution, one end of the horizontal portion at the bottom of the L-shaped material support frame is inclined downwards.

[0013] As a further technical solution, the transverse joint surface of the sliding mounting groove has a T-shaped structure, and both ends of the sliding mounting groove are open structures.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the feeding assembly achieves fully automatic continuous feeding through multi-structure collaboration, solving the problems of low efficiency and uneven material supply in traditional manual feeding. The inclined extension frame uses gravity-assisted conveying to reduce conveyor belt energy consumption, and works with the feeding hopper to quantitatively receive raw materials, ensuring consistent material supply for each batch. This avoids the injection molding machine from clogging the inlet due to excessive material or causing dry burning due to insufficient material, ensuring that the finished plastic buckets are free from defects such as missing material or uneven wall thickness.

[0015] The pusher rack inside the hopper continuously pushes raw materials to prevent blockage of the discharge pipe. The support rack rises in sync with material consumption to avoid material clumping at the bottom of the hopper, ensuring a continuous and stable supply of raw materials. The overall structure replaces manual handling and tipping, significantly reducing labor intensity, adapting to batch production rhythms, minimizing injection molding machine downtime due to material feeding interruptions, and improving the production efficiency and quality stability of plastic buckets. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Injection molding machine body; 2. Outer frame; 3. Feeding assembly; 3-1. Extension frame; 3-2. Conveyor belt; 3-3. Feeding hopper; 3-4. Discharge pipe; 3-5. Rotating shaft; 3-6. Pusher frame; 3-7. Stud; 3-8. Moving block; 3-9. Material support frame; 4. Residue collection assembly; 4-1. Docking cover; 4-2. Sliding mounting groove; 4-3. Recycling bin; 5. Material bin. Detailed Implementation

[0018] 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.

[0019] 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."

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] like Figures 1-3 As shown, it illustrates an automatic feeding injection molding machine for producing plastic buckets according to an embodiment of this disclosure, comprising: The injection molding machine body 1 and the outer frame 2 are arranged on the outside of the injection molding machine body 1; Material bin 5 and feeding assembly 3, wherein the material bin 5 is disposed on the outer frame 2, and the feeding assembly 3 is disposed on the material bin 5 and the outer frame 2; Residue collection component 4 is disposed on the outer frame 2; The feeding assembly 3 includes an extension frame 3-1, which is fixed at an angle to the surface of the injection molding machine body 1. A conveyor belt 3-2 is installed inside the extension frame 3-1, with its upper end located at the feeding section of the injection molding machine body 1. Several feeding hoppers 3-3 are arranged on the surface of the conveyor belt 3-2. A discharge pipe 3-4 is provided on the side surface of the material box 5, with its lower end located above the conveyor belt 3-2. A rotating shaft 3-5 is horizontally rotatably connected inside the material box 5, and the rotating shaft 3-5 is powered by electricity. Driven to rotate, a pusher frame 3-6 is provided on the rotating shaft 3-5. The pusher frame 3-6 is located on one side of the connection between the discharge pipe 3-4 and the material box 5. A stud 3-7 driven to rotate by electricity is vertically installed on the inner side of the material box 5. A moving block 3-8 is vertically slidably connected to the inner side of the material box 5. The moving block 3-8 and the stud 3-7 are connected by a threaded engagement. A material support frame 3-9 is provided on the side end face of the moving block 3-8. The material support frame 3-9 has an overall L-shaped structure and slides and seals against the inner wall of the material box 5.

[0025] In some examples, to achieve continuous and stable delivery of raw materials for plastic bucket production and avoid material accumulation, blockage, or supply interruption, a feeding assembly 3 is designed. This assembly includes an extension frame 3-1 that is tilted and fixed to the surface of the injection molding machine body 1, providing installation support and a foundation for the conveyor belt 3-2's conveying angle. The tilted design allows gravity to assist the raw materials in moving towards the injection molding machine's feeding section, reducing the conveying load on the conveyor belt 3-2 and preventing material backflow during delivery. Several feeding hoppers 3-3, evenly distributed on the surface of the conveyor belt 3-2 inside the extension frame 3-1, constitute a raw material quantitative receiving unit. Each feeding hopper 3-3 can hold a fixed amount of raw material, which is sequentially delivered to the upper end as the conveyor belt 3-2 rotates, precisely connecting to the feeding section of the injection molding machine body 1. This ensures that the amount of raw material delivered to the injection molding machine in each batch is consistent, avoiding injection molding defects (such as insufficient material or overflow) caused by inconsistent material supply.

[0026] The lower end of the discharge pipe 3-4 on the side surface of the material box 5 is located above the conveyor belt 3-2, providing a channel for the raw materials to be transported from the material box 5 to the conveyor belt 3-2, ensuring that the raw materials can fall accurately into the feeding hopper 3-3 and avoid direct spillage. The rotating shaft 3-5, which is horizontally connected inside the material box 5, is driven by electricity to rotate. The pusher 3-6 on its surface is located on the side of the connection between the discharge pipe 3-4 and the material box 5, forming an active material pushing structure. When the pusher 3-6 rotates with the rotating shaft 3-5, it can continuously push the raw materials in the material box 5 towards the inlet of the discharge pipe 3-4, preventing the raw materials from accumulating and blocking at the connection, ensuring that the raw materials enter the discharge pipe 3-4 stably, and continuously supplying the feeding hopper 3-3 of the conveyor belt 3-2, avoiding the conveyor belt 3-2 from running empty and leaking due to insufficient raw material supply. The stud 3-7, vertically installed inside the material bin 5, is driven by electricity to rotate. It engages with the moving block 3-8, which is vertically slidably connected to the inside of the material bin 5, forming the lifting drive structure of the material support frame 3-9. The L-shaped material support frame 3-9 on the side end face of the moving block 3-8 slides and seals against the inner wall of the material bin 5. It can rise and fall vertically along the inner wall of the material bin 5 with the moving block 3-8. When there is a lot of raw material in the material bin 5, the material support frame 3-9 supports the raw material below, preventing the raw material at the bottom from being compacted and clumped due to its own weight. As the raw material is continuously fed into the discharge pipe 3-4 by the pusher frame 3-6, the stud 3-7 drives the moving block 3-8 to slowly rise the material support frame 3-9, lifting the remaining raw material in the material bin 5 upwards. The raw material is always kept at a height that the pusher frame 3-6 can reach, preventing raw material residue at the bottom of the material bin 5 and ensuring a continuous supply of raw material.

[0027] The L-shaped structure of the material support frame 3-9 can increase the contact area with the raw material and improve the lifting stability. Its sliding seal fit with the inner wall of the material box 5 can prevent the raw material from leaking from the gap between the material support frame 3-9 and the box wall to the bottom of the material box 5 and forming residue.

[0028] During operation, the material support frame 3-9 supports the raw material, the pusher frame 3-6 pushes the material into and out of the inlet / outlet pipe 3-4, and the conveyor belt 3-2 and the feeding hopper 3-3 receive and transport the material, working together to achieve continuous feeding of raw materials and meet the production needs of the injection molding machine.

[0029] like Figures 1-3 As shown in the figure, the residual collection component 4 in this embodiment includes a docking cover 4-1, which is fixed to the outer wall of the material box 5. The docking cover 4-1 is located on one side of the lower end of the extension frame 3-1, and there is a gap between the docking cover 4-1 and the lower end of the extension frame 3-1. A pair of sliding mounting grooves 4-2 are horizontally opened on the surface of the outer frame 2. A recycling box 4-3 is horizontally slidably inserted into the sliding mounting groove 4-2. The recycling box 4-3 is located below the gap between the docking cover 4-1 and the extension frame 3-1.

[0030] In some examples, in order to achieve efficient recycling of scattered raw materials during the transportation of raw materials for plastic bucket production and avoid waste of raw materials and pollution of the production environment, a residual collection component 4 is designed. This component includes a docking cover 4-1 fixed to the outer wall of the material box 5, located on one side of the lower end of the extension frame 3-1, which forms a guiding barrier for scattered raw materials. During the transportation of raw materials by the conveyor belt 3-2, some small raw material particles may fall from the edge of the feeding hopper 3-3 due to factors such as vibration and deviation of the tilt angle of the feeding hopper 3-3. The docking cover 4-1 can block these scattered raw materials from the side and prevent them from spreading to the surroundings. At the same time, the tilt angle of the docking cover 4-1 (which can be adapted to the tilt direction of the extension frame 3-1) can guide the scattered raw materials to converge downwards, avoiding the accumulation of raw materials at the lower end of the extension frame 3-1, and providing convenience for subsequent recycling.

[0031] A gap is left between the bottom of the docking cover 4-1 and the extension frame 3-1. This gap design can prevent the docking cover 4-1 from directly contacting the conveyor belt 3-2 or the extension frame 3-1, and prevent the conveyor belt 3-2 from rubbing against the docking cover 4-1 when rotating, which would cause wear on the parts. At the same time, it provides a falling channel for scattered raw materials, ensuring that the raw materials blocked by the docking cover 4-1 can fall smoothly into the recycling area through the gap, avoiding the raw materials from getting stuck due to the gap being too small or the raw materials from leaking out of the gap due to the gap being too large.

[0032] A pair of horizontally opening sliding mounting slots 4-2 on the surface of the outer frame 2 provide a horizontal sliding mounting base for the recycling bin 4-3. The recycling bin 4-3 is horizontally slidably inserted into the sliding mounting slots 4-2 and is located directly below the gap between the docking cover 4-1 and the extension frame 3-1, forming a collection carrier for scattered raw materials. Scattered raw materials falling at intervals can fall directly into the recycling bin 4-3 to achieve centralized collection.

[0033] The sliding fit between the recycling bin 4-3 and the sliding mounting groove 4-2 allows the recycling bin 4-3 to be easily pulled out from the outer frame 2, facilitating operators to periodically return collected residual materials to the material bin 5 for reuse, thus avoiding waste. The guiding function of the sliding mounting groove 4-2 ensures that the recycling bin 4-3 is precisely aligned with the lower part of the gap each time it is installed, preventing material leakage due to installation misalignment. The volume of the recycling bin 4-3 can be designed according to the amount of material spillage on the production line, avoiding frequent cleaning that affects production efficiency. The inner wall of the recycling bin 4-3 can be smoothed to prevent material residue from clumping inside the bin.

[0034] During operation, the docking cover 4-1 blocks and guides the scattered raw materials, which then fall into the recycling box 4-3 through intervals. The recycling box 4-3 is then slid out for cleaning and reuse. All components work together to achieve the recycling of residual raw materials, meeting the needs of economical and clean production.

[0035] For example, such as Figure 3 As shown, one end of the horizontal portion at the bottom of the L-shaped material support frame 3-9 is inclined downwards.

[0036] In some examples, one end of the horizontal section at the bottom of the L-shaped material tray 3-9 is tilted downwards. This design uses gravity to guide the plastic material on the material tray 3-9 towards the pusher 3-6 inside the hopper 5, preventing the material from accumulating in the horizontal section of the material tray 3-9 and creating dead zones. As the material tray 3-9 slowly rises with the moving block 3-8, the tilted surface allows the material to flow naturally towards the working area of ​​the pusher 3-6, ensuring that the pusher 3-6 can fully contact and push the material when it rotates, reducing the amount of material remaining at the bottom of the material tray 3-9.

[0037] For example, such as Figure 3 As shown, the horizontal joint surface of the sliding mounting groove 4-2 has a T-shaped structure, and both ends of the sliding mounting groove 4-2 are open structures.

[0038] In some examples, the sliding mounting groove 4-2 has a T-shaped cross-section with open ends. The T-shaped structure can engage and limit the matching protrusions on both sides of the recycling box 4-3, restricting the vertical displacement of the recycling box 4-3 during sliding and preventing it from falling out of the mounting groove due to equipment vibration. This ensures that the recycling box 4-3 is always precisely aligned with the gap between the docking cover 4-1 and the extension frame 3-1, and stably receives scattered raw materials.

[0039] In actual use: Plastic granules are poured into the hopper 5 on the outer frame 2. The studs 3-7, vertically installed inside the hopper 5, are activated. The studs 3-7, through threaded transmission, drive the moving block 3-8 and the L-shaped support frame 3-9 to rise vertically. The support frame 3-9 slides and seals against the inner wall of the hopper 5, lifting the raw material to a height accessible to the pusher frame 3-6. The rotating shaft 3-5 inside the hopper 5 is activated, causing the pusher frame 3-6 to rotate, continuously pushing the raw material towards the discharge pipe 3-4 on the side surface of the hopper 5. The raw material falls precisely through the discharge pipe 3-4 onto the conveyor belt 3-2 inside the extension frame 3-1. The conveyor belt 3-2 is activated, and several feeding hoppers on its surface... 3-3 sequentially receives raw materials and moves upward along the inclined extension frame 3-1 with the conveyor belt 3-2, stably conveying the raw materials to the feeding section of the main body 1 of the injection molding machine, providing continuous material supply for the injection molding machine; during the conveying process, the scattered raw materials are blocked by the docking cover 4-1 on the outer wall of the material box 5, and fall into the recycling box 4-3 in the sliding mounting groove 4-2 of the lower outer frame 2 through the gap between the docking cover 4-1 and the lower end of the extension frame 3-1. When the recycling box 4-3 has collected a certain amount, it is horizontally pulled out along the T-shaped sliding mounting groove 4-2, and the residual raw materials are poured back into the material box 5 for reuse. The whole process does not require frequent manual handling and feeding, ensuring that the injection molding machine can stably carry out plastic bucket injection molding production.

[0040] 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. An automatic feeding injection molding machine for producing plastic buckets, characterized in that, include: The injection molding machine body (1) and the outer frame (2) are provided on the outside of the injection molding machine body (1); A material bin (5) and a feeding assembly (3), wherein the material bin (5) is mounted on the outer frame (2) and the feeding assembly (3) is mounted on the material bin (5) and the outer frame (2); A residue collection component (4) is disposed on the outer frame (2); The feeding assembly (3) includes an extension frame (3-1), which is fixed at an incline on the surface of the injection molding machine body (1). A conveyor belt (3-2) is provided inside the extension frame (3-1), and the upper end of the conveyor belt (3-2) is located at the feeding part of the injection molding machine body (1). A plurality of feeding hoppers (3-3) are provided on the surface of the conveyor belt (3-2).

2. The automatic feeding injection molding machine for producing plastic buckets according to claim 1, characterized in that, The side surface of the material box (5) is provided with a discharge pipe (3-4), the lower end of the discharge pipe (3-4) is located above the conveyor belt (3-2), and a rotating shaft (3-5) is horizontally rotatably connected inside the material box (5), and the rotating shaft (3-5) is driven to rotate by electricity.

3. The automatic feeding injection molding machine for producing plastic buckets according to claim 2, characterized in that, A pusher frame (3-6) is provided on the rotating shaft (3-5). The pusher frame (3-6) is located on one side of the connection between the discharge pipe (3-4) and the material box (5). A stud (3-7) driven by electricity is vertically installed on the inner side of the material box (5).

4. The automatic feeding injection molding machine for producing plastic buckets according to claim 3, characterized in that, The inner side of the material box (5) is vertically slidably connected to a moving block (3-8). The moving block (3-8) is connected to the stud (3-7) by a threaded engagement. The side end face of the moving block (3-8) is provided with a material support frame (3-9). The material support frame (3-9) is in an L-shaped structure. The material support frame (3-9) slides and seals against the inner wall of the material box (5).

5. The automatic feeding injection molding machine for producing plastic buckets according to claim 1, characterized in that, The residue collection assembly (4) includes a docking cover (4-1), which is fixed to the outer wall of the material box (5). The docking cover (4-1) is located on one side of the lower end of the extension frame (3-1), and there is a gap between the docking cover (4-1) and the lower end of the extension frame (3-1).

6. The automatic feeding injection molding machine for producing plastic buckets according to claim 5, characterized in that, The outer frame (2) has a pair of sliding mounting slots (4-2) horizontally opened on its surface. A recycling box (4-3) is horizontally slidably inserted into the sliding mounting slot (4-2). The recycling box (4-3) is located below the gap between the docking cover (4-1) and the extension frame (3-1).

7. The automatic feeding injection molding machine for producing plastic buckets according to claim 4, characterized in that, The bottom horizontal portion of the L-shaped material support frame (3-9) is inclined downwards at one end.

8. The automatic feeding injection molding machine for producing plastic buckets according to claim 6, characterized in that, The sliding mounting groove (4-2) has a T-shaped cross-section, and both ends of the sliding mounting groove (4-2) are open.

Images