Feeding device for injection mold

By designing easily detachable filter screen fixing components and crushing components, the problems of inconvenient filter screen disassembly and uneven raw material are solved, enabling rapid filter screen replacement and uniform crushing of raw materials, thereby improving injection molding efficiency and working environment quality.

CN224060319UActive Publication Date: 2026-03-31DONGGUAN BIRUI RAPID PROTOTYPING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-29
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

The filter screen of the existing injection mold is not easy to disassemble, which increases the working time of the staff, and the unevenness of the raw material particles affects the injection efficiency.

Method used

A feeding device for injection molds was designed, including a filter screen fixing component, a crushing component, a material guide chute, a dust removal component, etc., which are easy to disassemble. The filter screen is moved by a slider and a chute in conjunction with a movable block, which simplifies the installation and disassembly of the filter screen. The crushing motor drives the crushing roller to achieve uniform crushing of the raw materials.

Benefits of technology

It improves the ease of filter maintenance and replacement, ensures uniformity of raw material particles, reduces labor time, and enhances injection molding efficiency and working environment quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of injection molding, and particularly discloses a feeding device for an injection mold, which comprises four supporting columns, a working box is fixedly arranged at the tops of the four supporting columns, a crushing component is arranged in an inner cavity of the working box, a filter screen is arranged in the inner cavity of the working box and is positioned below the crushing component, and the crushing component is arranged in the inner cavity of the working box. Two fixing assemblies used in cooperation with the filter screens are arranged on one side of the working box, each fixing assembly comprises a movable box, one side of each movable box is fixedly connected with one side of the working box, a pull rod is movably arranged in an inner cavity of each movable box, and one end of each pull rod penetrates and extends to the outer portion of the corresponding movable box and is fixedly connected with a plastic clamping block. When the filter screen is disassembled, a worker pulls a plastic clamping block to clamp the plastic clamping block with a limiting block, the plastic clamping block moves to drive a pull rod to move, the pull rod moves to drive a movable block to move, a sliding block and a sliding groove are matched with the movable block to move, and the movable block moves to drive a clamping rod to move.
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Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a feeding device for injection molds. Background Technology

[0002] Injection molding is a plastic molding process. Specifically, granular or powdered plastic raw materials are added to the barrel of an injection molding machine. The plastic is heated to a molten state by the barrel's heating system. Then, driven by the screw of the injection molding machine, the molten plastic is injected into a pre-designed mold cavity at high pressure and high speed. After cooling and solidification, the mold is opened and the molded plastic product is removed.

[0003] In the injection molding process, before the raw materials enter the injection mold, they need to be pre-treated and transported by a feeding device. In order to ensure the uniformity of the raw material particles and control the accuracy of the raw materials, the feeding device needs to use a filter screen to filter the raw materials. After long-term use, the filter screen will need to be maintained or replaced. However, the filter screen is not easy to disassemble, and the staff needs to spend a lot of time to disassemble the filter screen, which increases the staff's labor time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a feeding device for injection molds, which has advantages such as easy disassembly of the filter screen, thus solving the problem of inconvenient filter screen disassembly.

[0005] This utility model discloses a feeding device for injection molds, comprising four support columns, a working box fixedly mounted on the top of the four support columns, a crushing component inside the working box, a filter screen inside the working box and below the crushing component, two fixing components for use with the filter screen on one side of the working box, each fixing component including a movable box, one side of the movable box being fixedly connected to one side of the working box, a pull rod movably mounted inside the movable box, one end of the pull rod extending through to the outside of the movable box and fixedly connected to a plastic clamping block, a limiting block for use with the plastic clamping block fixedly mounted on one side of the working box, a movable block fixedly connected to the other end of the pull rod, a spring annularly wound on the surface of the pull rod inside the movable box, and both ends of the spring being fixedly connected to the top of the movable box and the top of the movable block, respectively, a locking rod fixedly mounted on the bottom of the movable block, one end of the locking rod extending through to the outside of the movable box, and a locking hole for use with the locking rod on the surface of the filter screen. When disassembling the filter, the worker pulls the plastic clip to engage with the limit block. The movement of the plastic clip moves the pull rod, which in turn moves the movable block. The movable block moves in conjunction with the slider and groove, which in turn moves the locking rod. When the locking rod moves out of the locking hole, the filter is released from its limiting position, allowing the worker to remove it for maintenance or replacement. When installing the filter, one end is inserted into the inner cavity of the work box, allowing it to move along the grooves on both sides of the inner cavity. Once one end engages with the limiting groove on one side of the inner cavity, the worker moves the plastic clip to release the limiting position between the plastic clip and the limit block. The inertia of the spring causes the movable block to reset, which in turn causes the locking rod to reset and engage with the locking hole. This locking rod then engages with the locking hole, limiting the filter. The filter installation is now complete. This simple operation increases the convenience of filter maintenance and replacement, saving workers' time.

[0006] This utility model discloses a feeding device for injection molds, wherein the crushing component includes a crushing motor, one side of which is fixedly connected to one side of a working box. One end of the crushing motor is rotatably connected to a rotating rod, one end of which penetrates the inner cavity of the working box and extends to the outside of the working box and is movably connected to the inner cavities on both sides of the working box. A main gear is fixedly sleeved on the surface of the rotating rod and located outside the working box. A driven gear meshes on the surface of the main gear. A transmission rod is fixedly connected to the inner cavity of the driven gear, and one end of the transmission rod penetrates and extends into the inner cavity of the working box and is movably connected to the inner cavity on one side of the working box. Crushing rollers are fixedly sleeved on the surfaces of the rotating rod and the transmission rod and located inside the working box. During crushing, the crushing motor starts, which drives the rotating rod to rotate. The rotating rod drives the main gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the transmission rod to rotate, which in turn drives the crushing roller to rotate. The rotation of the crushing roller crushes the material. By setting up crushing components to crush the material, the raw material particles become smaller and more uniform, thereby saving subsequent material molding time and improving injection molding efficiency.

[0007] This utility model discloses a feeding device for injection molds, wherein sliders are fixedly provided on both the left and right sides of the movable block, and grooves that cooperate with the sliders are opened on both sides of the inner cavity of the movable box. By setting sliders and grooves to cooperate with the movable block for movement, the stability of the movable block is increased, and jamming or displacement during the movement of the movable block is avoided, thereby affecting the efficiency of installing and removing the filter screen.

[0008] This utility model discloses a feeding device for injection molds, wherein the inner cavity of the working box is fixedly equipped with a guide trough, which is used in conjunction with a filter screen. By setting the guide trough to guide the crushed material, the material can be made to move along a predetermined trajectory, avoiding the phenomenon of material scattering or deviation, and ensuring the stable operation of the feeding process.

[0009] This utility model discloses a feeding device for injection molds, wherein the top of the working box is provided with a feeding port, the bottom of the working box is provided with a guide funnel, and the bottom of the guide funnel is connected to a feeding pipe. Material falls into the feeding pipe through the guide funnel and is conveyed through the feeding pipe. By setting up the feeding port and feeding pipe, convenient feeding and discharging are achieved, increasing the continuity of the feeding operation.

[0010] This utility model discloses a feeding device for injection molds, wherein a support plate is fixedly provided on one side of the working box, and a dust removal component is provided on the top of the support plate. By using the dust removal component in conjunction with the crushing component, the dust generated during the crushing process can be purified, improving the quality of the working environment and protecting the health of the workers.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, when disassembling the filter screen, the operator pulls the plastic clip to engage with the limiting block. The movement of the plastic clip moves the pull rod, which in turn moves the movable block. The movable block moves through the cooperation of the slider and the slide groove, which in turn moves the locking rod. When the locking rod moves out of the inner cavity of the locking hole, the limiting of the filter screen is released, and the operator can then remove the filter screen for maintenance or replacement. When installing the filter screen, one end of the filter screen is inserted into the inner cavity of the working box, so that... The filter screen moves along the sliding grooves on both sides of the inner cavity of the working box. After one end of the filter screen moves and engages with the limiting groove on one side of the inner cavity of the working box, the operator moves the plastic locking block to release the limit between the plastic locking block and the limiting block. The inertia of the spring will drive the movable block to reset. The reset of the movable block will drive the locking rod to reset and engage with the locking hole. The engagement of the locking rod with the locking hole will limit the filter screen. At this time, the filter screen installation is completed. The operation is simple and increases the convenience of filter screen maintenance and replacement, thereby saving the operator's labor time.

[0013] 2. In this invention, during crushing, the crushing motor starts, which drives the rotating rod to rotate. The rotating rod drives the main gear to rotate, which in turn drives the driven gear to rotate. The driven gear then drives the transmission rod to rotate, which in turn drives the crushing roller to rotate. The rotation of the crushing roller crushes the material. By setting up the crushing components to crush the material, the raw material particles become smaller and more uniform, thereby saving subsequent material molding time and improving injection molding efficiency.

[0014] By setting up sliders and grooves to cooperate with the movable block for movement, the stability of the movable block is increased, and the block is prevented from getting stuck or shifting during movement, which would affect the efficiency of installing and removing the filter screen.

[0015] By setting up a guide chute to guide the crushed material, the material can move along a predetermined trajectory, avoiding the phenomenon of material scattering or deviating, and ensuring the stable progress of the feeding operation.

[0016] The material falls into the feeding pipe through the feeding funnel and is conveyed through the feeding pipe. By setting up the feeding port and feeding pipe, the feeding and discharging are facilitated, and the continuity of the feeding operation is increased.

[0017] By using dust removal components in conjunction with crushing components, the dust generated during the crushing process can be purified, improving the quality of the working environment and protecting the health of the staff. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the working box of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the movable box of this utility model;

[0023] Figure 5 This is a schematic diagram of the crushing component structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the filter screen and card hole structure of this utility model.

[0025] In the diagram: 1. Support column; 2. Working box; 3. Crushing assembly; 301. Crushing motor; 302. Rotating rod; 303. Main gear; 304. Driven gear; 305. Transmission rod; 306. Crushing roller; 4. Filter screen; 5. Fixed assembly; 501. Movable box; 502. Pull rod; 503. Movable block; 504. Spring; 505. Slider; 506. Slide groove; 507. Clamping rod; 508. Plastic clamping block; 509. Limiting block; 6. Clamping hole; 7. Bearing plate; 8. Guide chute; 9. Guide funnel; 10. Feed inlet; 11. Feeding pipe; 12. Dust removal assembly. Detailed Implementation

[0026] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0027] Please see Figure 1-6This utility model discloses a feeding device for injection molds, comprising four support columns 1, a working box 2 fixedly mounted on the top of the four support columns 1, a crushing component 3 disposed inside the working box 2, a filter screen 4 disposed inside the working box 2 and below the crushing component 3, and two fixing components 5 disposed on one side of the working box 2 for use with the filter screen 4, the fixing components 5 including a movable box 501, one side of the movable box 501 being fixedly connected to one side of the working box 2, a pull rod 502 movably mounted inside the movable box 501, one end of the pull rod 502 extending through to the outside of the movable box 501 and fixedly connected to a plastic A plastic clip 508 is fixedly provided on one side of the working box 2, and a limiting block 509 is fixedly connected to the other end of the pull rod 502. A spring 504 is wound around the surface of the pull rod 502 and inside the cavity of the movable box 501. The two ends of the spring 504 are fixedly connected to the top of the cavity of the movable box 501 and the top of the movable block 503, respectively. A locking rod 507 is fixedly provided at the bottom of the movable block 503, and one end of the locking rod 507 extends through to the outside of the movable box 501. A locking hole 6 is opened on the surface of the filter screen 4 to cooperate with the locking rod 507. When disassembling filter screen 4, the operator pulls the plastic clip 508 to engage it with the limiting block 509. The movement of the plastic clip 508 moves the pull rod 502, which in turn moves the movable block 503. The movable block 503 moves in conjunction with the slider 505 and the slide groove 506, which in turn moves the locking rod 507. When the locking rod 507 moves out of the inner cavity of the locking hole 6, the limiting on filter screen 4 is released, allowing the operator to remove it for maintenance or replacement. When installing filter screen 4, one end of it is inserted into the inner cavity of the work box 2. This causes the filter screen 4 to move along the sliding grooves on both sides of the inner cavity of the working box 2. After one end of the filter screen 4 moves and engages with the limiting groove on one side of the inner cavity of the working box 2, the operator moves the plastic locking block 508 to release the limiting between the plastic locking block 508 and the limiting block 509. The inertia of the spring 504 can drive the movable block 503 to reset. The reset of the movable block 503 can drive the locking rod 507 to reset and engage with the locking hole 6. The engagement of the locking rod 507 with the locking hole 6 can limit the filter screen 4. At this time, the filter screen 4 is installed. The operation is simple and increases the convenience of maintenance and replacement of the filter screen 4, thereby saving the operator's labor time.

[0028] The crushing assembly 3 includes a crushing motor 301. One side of the crushing motor 301 is fixedly connected to one side of the working box 2. One end of the crushing motor 301 is rotatably connected to a rotating rod 302. One end of the rotating rod 302 passes through the inner cavity of the working box 2 and extends to the outside of the working box 2 and is movably connected to the inner cavities on both sides of the working box 2. A main gear 303 is fixedly sleeved on the surface of the rotating rod 302 and located outside the working box 2. A driven gear 304 meshes on the surface of the main gear 303. A transmission rod 305 is fixedly connected to the inner cavity of the driven gear 304. One end of the transmission rod 305 passes through and extends into the inner cavity of the working box 2 and is movably connected to the inner cavity on one side of the working box 2. Crushing rollers 306 are fixedly sleeved on the surfaces of the rotating rod 302 and the transmission rod 305 and located inside the working box 2. During crushing, the crushing motor 301 starts, which drives the rotating rod 302 to rotate. The rotating rod 302 drives the main gear 303 to rotate, which in turn drives the driven gear 304 to rotate. The driven gear 304 then drives the transmission rod 305 to rotate. The rotation of the rotating rod 302 and the transmission rod 305 drives the crushing roller 306 to rotate. The rotation of the crushing roller 306 crushes the material. By setting the crushing component 3 to crush the material, the raw material particles become smaller and more uniform, thereby saving subsequent material molding time and improving injection molding efficiency.

[0029] Slider blocks 505 are fixedly installed on both the left and right sides of the movable block 503, and grooves 506 that cooperate with the sliders 505 are opened on both sides of the inner cavity of the movable box 501. By setting the sliders 505 and the grooves 506 to cooperate with the movable block 503 to move, the stability of the movable block 503 is increased, and it is avoided that the movable block 503 will get stuck or deviate during the movement, thereby affecting the efficiency of installing and removing the filter screen 4.

[0030] The inner cavity of the working box 2 is fixedly equipped with a material guide trough 8, which works in conjunction with the filter screen 4. By setting the material guide trough 8 to guide the crushed material, the material can move along a predetermined trajectory, avoiding the phenomenon of material scattering or deviation, and ensuring the stable operation of the feeding process.

[0031] The top of the working box 2 is equipped with a feed inlet 10, and the bottom of the working box 2 is equipped with a guide funnel 9, with a feeding pipe 11 connected to the bottom of the guide funnel 9. The material falls into the feeding pipe 11 through the guide funnel 9 and is conveyed through the feeding pipe 11. By setting up the feed inlet 10 and the feeding pipe 11, the feeding and discharging of materials are facilitated, and the continuity of the feeding operation is increased.

[0032] A support plate 7 is fixedly installed on one side of the working box 2, and a dust removal component 12 is installed on the top of the support plate 7. By setting the dust removal component 12 to work in conjunction with the crushing component 3, the dust generated during the crushing process can be purified, improving the quality of the working environment and protecting the health of the workers.

[0033] When using this utility model: When disassembling the filter screen 4, the worker pulls the plastic clip 508 to engage it with the limiting block 509. The movement of the plastic clip 508 drives the pull rod 502 to move, which in turn drives the movable block 503 to move. The movable block 503 moves in conjunction with the slider 505 and the slide groove 506, which in turn drives the locking rod 507 to move. When the locking rod 507 moves to the inner cavity where it is disengaged from the locking hole 6... This releases the restriction on filter 4, allowing the operator to remove it for maintenance or replacement. When installing filter 4, insert one end into the inner cavity of the work box 2, allowing it to move along the sliding grooves on both sides of the inner cavity. Once one end of filter 4 engages with the limiting groove on one side of the inner cavity, the operator moves the plastic locking block 508 to release the restriction between the plastic locking block 508 and the limiting block 509. This release is achieved through the inertia of the spring 504. The movement of the movable block 503 can reset the filter screen 4. The reset of the movable block 503 can then reset the locking rod 507 and engage it with the locking hole 6. The engagement of the locking rod 507 with the locking hole 6 limits the filter screen 4, thus completing the installation. This simple operation increases the convenience of maintaining and replacing the filter screen 4, saving workers' time. During crushing, the crushing motor 301 starts, driving the rotating rod 302 to rotate. The rotating rod 302 then drives the main gear 303 to rotate, which in turn drives the driven gear 304 to rotate. The driven gear 304 then drives the transmission rod 305 to rotate, which in turn drives the crushing roller 306 to rotate. The rotation of the crushing roller 306 crushes the material. By setting the crushing component 3 to crush the material, the raw material particles become smaller and more uniform, saving subsequent material molding time and improving injection molding efficiency.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A feeding device for injection moulds comprising four supporting columns (1), characterised in that: The top of four supporting columns (1) is fixedly provided with a working box (2), the inner cavity of the working box (2) is provided with a crushing assembly (3), the inner cavity of the working box (2) and below the crushing assembly (3) is provided with a filter screen (4), one side of the working box (2) is provided with two fixed assemblies (5) used in cooperation with the filter screen (4), the fixed assembly (5) comprises a movable box (501), one side of the movable box (501) is fixedly connected with one side of the working box (2), the inner cavity of the movable box (501) movably provided with a pull rod (502), one end of the pull rod (502) extends to the outside of the movable box (501) and is fixedly connected with a plastic clamping block (508), one side of the working box (2) is fixedly provided with a limiting block (509) used in cooperation with the plastic clamping block (508), the other end of the pull rod (502) is fixedly connected with a movable block (503), the surface of the pull rod (502) and in the inner cavity of the movable box (501) is annularly provided with a spring (504), and the two ends of the spring (504) are fixedly connected with the top of the inner cavity of the movable box (501) and the top of the movable block (503) respectively, the bottom of the movable block (503) is fixedly provided with a clamping rod (507), and one end of the clamping rod (507) extends to the outside of the movable box (501), the surface of the filter screen (4) is provided with a clamping hole (6) used in cooperation with the clamping rod (507).

2. A material feeding device for an injection mold according to claim 1, characterized in that: The crushing assembly (3) comprises a crushing motor (301), one side of the crushing motor (301) is fixedly connected with one side of the working box (2), one end of the crushing motor (301) is rotatably connected with a rotating rod (302), one end of the rotating rod (302) penetrates the inner cavity of the working box (2) and extends to the outside of the working box (2) and movably connects with the inner cavities on both sides of the working box (2), the surface of the rotating rod (302) and outside the working box (2) is fixedly sleeved with a main gear (303), the surface of the main gear (303) is engaged with a slave gear (304), the inner cavity of the slave gear (304) is fixedly connected with a transmission rod (305), one end of the transmission rod (305) extends to the inner cavity of the working box (2) and movably connects with the inner cavity of one side of the working box (2), the surfaces of the rotating rod (302) and the transmission rod (305) and in the inner cavity of the working box (2) are fixedly sleeved with a crushing roller (306).

3. The material feeding device for injection mold according to claim 1, characterized in that: The left and right sides of the movable block (503) are both fixedly provided with sliding blocks (505), and the inner cavities of the movable box (501) are both provided with sliding grooves (506) used in cooperation with the sliding blocks (505).

4. The material feeding device for injection mold according to claim 1, characterized in that: The inner cavity of the working box (2) is fixedly provided with a material guide groove (8), and the material guide groove (8) is used in cooperation with the filter screen (4).

5. The material feeding device for injection mold according to claim 1, characterized in that: The top of the working box (2) is provided with a feeding port (10), the bottom of the working box (2) is provided with a material guide funnel (9), and the bottom of the material guide funnel (9) is connected with a feeding pipe (11).

6. The material feeding device for injection mold according to claim 1, characterized in that: One side of the working box (2) is fixedly provided with a bearing plate (7), and the top of the bearing plate (7) is provided with a dust removal assembly (12).