Injection molding mixing device

Abstract

The utility model relates to the field of testing devices, in particular to an injection molding mixing device which structurally comprises mixers, the mixers are connected with a stock bin at the top, a material closing hopper is arranged at a discharge port of each mixer, every two mixers form a group to mix through the material closing hopper, detachable recycling drawers are further mounted at the bottoms of the mixers, and the recycling drawers are connected with the stock bin. A bottom frame is further installed at the bottom of the machine body, the recycling drawer is movably connected with the bottom frame, a rotatable inner barrel is further installed in an outer barrel of the blender, the axis of the inner barrel coincides with the axis of a screw of the blender, and due to the improved nested design of the outer barrel and the inner barrel of the device, material conveying noise is effectively lowered, and the comfort of the working environment is improved. And the second driver realizes accurate rotation control of the inner cylinder through an encoder, and by combining with the design of a bottom strip-shaped discharge chute, accumulated powder can be automatically cleaned, and a negative pressure suction mechanism with a blockage fault is avoided.

Description

Technical Field

[0001] This utility model relates to a mixing device, and more particularly to an injection molding mixing device. Background Technology

[0002] In the footwear manufacturing industry, especially in the production of components such as soles and midsoles, it is often necessary to mix two or more granular raw materials (such as EVA granules, rubber granules, foaming agents, etc.) in a specific ratio to meet material performance requirements. Traditional mixing equipment mostly uses a screw feeding mechanism to convey and meter granular materials. Although screw feeding mechanisms are widely used in footwear mixing equipment, the following technical problems still exist in their actual operation:

[0003] Particle powder accumulation and pipe blockage: The root cause of the problem is that during the conveying process, tiny powder particles in the granular material are easily deposited at the bottom of the spiral feeding pipe due to gravity, especially in the gap between the spiral blades and the pipe wall. As the equipment runs continuously, the powder gradually hardens and forms a hard accumulation layer, resulting in a reduction in the effective flow cross-sectional area of ​​the pipe. Utility Model Content

[0004] This invention provides an injection molding mixing device that can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] An injection molding mixing device includes: a machine body, inside which two identical hoppers are installed, and movable covers are installed at the positions of the hoppers; a mixer connected to the hoppers is provided at the bottom of the machine body; a controller for controlling the mixer is provided on the side of the machine body; the mixer includes a mixing unit connected to the top hopper; a hopper is provided at the outlet of the mixing unit; the two mixing units are mixed together through the hopper; a detachable collection drawer is also installed at the bottom of the mixing unit; a base frame is also installed at the bottom of the machine body; the collection drawer is movably connected to the base frame; and a rotatable inner cylinder is installed inside the outer cylinder of the mixing unit, the inner cylinder coinciding with the screw axis of the mixing unit.

[0007] As a further improvement, the bottom of the material hopper is provided with an extraction pipe, which is connected to the inner cavity of the material hopper.

[0008] As a further improvement, the structure of the mixer also includes a connecting groove installed on the top of the outer cylinder, a second driver is provided on the side of the outer cylinder, the second driver drives the inner cylinder inside the outer cylinder, the outer cylinder is connected to the inside of the extraction pipe, and a first driver is provided on one side of the outer cylinder for driving the screw inside the inner cylinder to rotate.

[0009] As a further improvement, the main shaft of the second drive is provided with a gear, and the outer teeth of the gear mesh with the outer teeth of the inner cylinder.

[0010] As a further improvement, the base frame includes a drive disk that meshes with the external teeth of a second driver. The drive disk is connected to a slot, and a discharge chute is provided at the top of the slot.

[0011] As a further improvement, the buckle groove is provided with sliding edges on both sides, which fit tightly against the inner surface of the outer cylinder. An isolation plate is provided between the buckle groove and the drive disc. The isolation plate is installed on the inner wall of the outer cylinder, and the isolation plate and the inner wall of the outer cylinder form a cavity to protect the drive disc.

[0012] As a further improvement, a gap is formed between the buckle groove and the outer cylinder.

[0013] As a further improvement, the bottom of the outer cylinder is provided with a groove that communicates with the recycling drawer.

[0014] As a further improvement, the bottom of the mixing hopper is conical, and an extraction pipe is installed at the bottommost point to connect with the inner cavity of the mixing hopper.

[0015] As a further improvement, the second driver is a DC motor with an encoder on one side of the slot.

[0016] The beneficial effects of this utility model are: the improved nested design of the outer and inner cylinders of the device effectively reduces material conveying noise and improves the comfort of the working environment; the second drive realizes precise rotation control of the inner cylinder through the encoder, and combined with the bottom strip unloading chute design, it can automatically clean up accumulated powder and avoid material blockage failures due to the negative pressure suction mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an injection molding mixing device according to the present invention.

[0019] Figure 2 This is a schematic diagram of the mixer of this utility model.

[0020] Figure 3 This is a schematic diagram of the mixer of this utility model.

[0021] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.

[0022] Figure 5 This is a schematic diagram of the inner cylinder of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Mixer; 2. Machine body; 3. Hopper; 4. Cover plate; 5. Controller;

[0025] 11. Mixer; 12. Combination hopper; 13. Extraction pipe; 14. Recycling drawer; 15. Base frame;

[0026] 111. First actuator; 112. Connecting groove; 113. Outer cylinder; 114. Second actuator; 115. Inner cylinder; 116. Screw;

[0027] 151. Drive plate; 152. Isolation plate; 153. Clip groove; 154. Sliding edge; 155. Discharge chute. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] During the conveying process, fine powder particles in the particulate material are easily deposited at the bottom of the spiral feeding pipe due to gravity, especially in the gap between the spiral blades and the pipe wall. As the equipment operates continuously, the powder gradually clumps together, forming a hard accumulation layer, which reduces the effective flow cross-sectional area of ​​the pipe. Therefore, in order to solve the above problems, this paper proposes the following technical solution:

[0031] Reference Figures 1-5As shown, an injection molding mixing device includes: a machine body 2, two identical hoppers 3 installed inside the machine body 2, and movable covers 4 installed at the positions of the hoppers 3; a mixer 1 connected to the hoppers 3 is provided at the bottom of the machine body 2; a controller 5 for controlling the mixer 1 is provided on the side of the machine body 2; the mixer 1 includes a mixing unit 11, which is connected to the hopper 3 at the top; a hopper 12 is provided at the outlet of the mixing unit 11; the two mixing units 11 are mixed together through the hopper 12; a detachable recycling drawer 14 is also installed at the bottom of the mixing unit 11; a base frame 15 is also installed at the bottom of the machine body 2; the recycling drawer 14 is movably connected to the base frame 15; and a rotatable inner cylinder 115 is installed inside the outer cylinder 113 of the mixing unit 11, with the inner cylinder 115 coinciding with the axis of the screw 116 of the mixing unit 11.

[0032] In this embodiment, the main structure of the device includes a body 2, inside which a hopper 3 is installed. Two hoppers 3 are connected to a mixer 1. The surface of the hopper 3 is provided with a cover plate 4 to protect the hopper 3. The mixer 11 is connected to the bottom of the hopper 3. The outlets of the two mixers 11 are provided with a material collection hopper 12 for material collection. The material collection hoppers 12 are connected to a suction pipe 13. The material in the material collection hopper 12 can be sucked out through the suction pipe 13 connected to a negative pressure pipe. A base frame 15 is installed at the bottom of the body 2. A recovery drawer 14 is installed inside the base frame 15. The recovery drawer 14 is connected to the base frame 15 and installed at the bottom of the mixer 11 for powder collection to avoid clogging.

[0033] The specific structure of the mixer 11 includes a first driver 111, which is connected to the screw 116 to drive the screw 116 to rotate for feeding. An outer cylinder 113 is provided outside the screw 116, and an inner cylinder 115 that cooperates with the screw 116 is also installed inside the outer cylinder 113. The double-layer structure can reduce noise during the conveying process.

[0034] A second driver 114 is provided on the surface of the outer cylinder 113. The second driver 114 is linked with the inner cylinder 115 and can control the inner cylinder 115 to rotate. During the rotation of the inner cylinder 115, the powder accumulated at the bottom can be poured out from the slot at the bottom of the outer cylinder 113. The second driver 114 is a DC motor with an encoder and is connected to the PLC of the controller 5 to control the rotation angle of the inner cylinder 115.

[0035] The inner cylinder 115 is connected to the second driver 114 via a drive disc 151 mounted on one side of the groove 153. A partition plate 152 is provided between the drive disc 151 and the groove 153 for protection of the drive disc 151. A discharge groove 155 is formed at the top of the groove 153. Sliding edges 154 are provided on both sides of the discharge groove 155 to fit against the inner wall of the outer cylinder 113, preventing raw materials from entering the interior of the outer cylinder 113.

[0036] The operating procedure for this device is as follows:

[0037] The materials to be mixed are poured into the hopper 3 and fed through the connecting groove 112 on the surface of the bottom outer cylinder 113. The number of rotations of the screw 116 is controlled according to the required amount.

[0038] The material fed from the screw 116 enters the inside of the hopper 12. The extraction pipe 13 is connected to the equipment, and the material inside the hopper 12 can be sucked out by negative pressure.

[0039] After prolonged use, the inside of the mixer 11 needs to be cleaned. The second driver 114 drives the inner cylinder 115 to rotate, causing the inner cylinder 115 to flip 180° to pour out the powder inside and avoid internal blockage.

[0040] The improved nested design of the outer cylinder 113 and inner cylinder 115 effectively reduces material conveying noise and improves the comfort of the working environment. The second drive 114 achieves precise rotation control of the inner cylinder 115 through an encoder. Combined with the bottom strip discharge chute design, it can automatically clean up accumulated powder and avoid material blockage failures due to the negative pressure suction mechanism.

[0041] The above description only outlines the basic principles and preferred embodiments of this utility model. Those skilled in the art can make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of this utility model.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection molding compounder apparatus comprising: The body (2) is internally provided with two identical material bins (3), and the material bins (3) are provided with movable cover plates (4); the bottom of the body (2) is provided with a mixer (1) connected with the material bins (3); the side of the body (2) is provided with a controller (5) for controlling the mixer (1), characterized in that: The mixer (1) comprises a mixer (11) connected with the top material bin (3), the mixer (11) is provided with a mixing hopper (12) at the discharge port, two groups of the mixers (11) are mixed through the mixing hopper (12), the bottom of the mixer (11) is further provided with a detachable recycling drawer (14), the bottom of the body (2) is further provided with a chassis (15), the recycling drawer (14) is movably connected with the chassis (15), the outer cylinder (113) of the mixer (11) is further provided with a rotatable inner cylinder (115), and the inner cylinder (115) is coaxial with the screw shaft (116) of the mixer (11).

2. An injection molding compounder as defined in claim 1, wherein: The bottom of the mixing hopper (12) is provided with a suction pipe (13) connected with the inner cavity of the mixing hopper (12).

3. An injection molding compounder as defined in claim 1, wherein: The structure of the mixer (11) further comprises a connecting groove (112) mounted on the top of the outer cylinder (113), the side of the outer cylinder (113) is provided with a second driver (114) for driving the inner cylinder (115) in the outer cylinder (113), the outer cylinder (113) is connected with the inner part of the suction pipe (13), and one side of the outer cylinder (113) is provided with a first driver (111) for driving the screw shaft (116) in the inner cylinder (115) to rotate.

4. An injection molding compounder as claimed in claim 3, wherein: The main shaft of the second driver (114) is provided with a gear, and the outer gear of the gear is engaged with the outer gear of the inner cylinder (115).

5. An injection molding compounder as defined in claim 1, wherein: The chassis (15) comprises a driving disc (151) engaged with the outer gear of the second driver (114), the driving disc (151) is connected with a buckle groove (153), and the top of the buckle groove (153) is provided with a discharge groove (155).

6. An injection molding compounder as claimed in claim 5, wherein: The two sides of the buckle groove (153) are provided with sliding edges (154) which are tightly combined with the inner surface of the outer cylinder (113), the buckle groove (153) and the driving disc (151) are provided with a partition plate (152), the partition plate (152) is mounted on the inner wall of the outer cylinder (113), and the partition plate (152) and the inner wall of the outer cylinder (113) form a cavity to protect the driving disc (151).

7. An injection molding compounder as defined in claim 6, wherein: The gap is formed between the buckle groove (153) and the outer cylinder (113).

8. An injection molding compounder as defined in claim 6, wherein: The bottom of the outer cylinder (113) is provided with a groove communicated with the recycling drawer (14).

9. An injection molding compounder as defined in claim 1, wherein: The bottom of the mixing hopper (12) is conical, and the bottom is provided with the suction pipe (13) connected with the inner cavity of the mixing hopper (12).

10. An injection molding compounder as defined in claim 5, wherein: The second driver (114) is a direct current motor with an encoder, and one side of the buckle groove (153).

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