Guide mechanism of injection molding machine

Abstract

The utility model relates to the field of injection molding machines, in particular to a guide mechanism of an injection molding machine, which comprises a shell, a horizontal first impeller is arranged in the shell, two sides of the first impeller are rotatably connected with the inner wall of the shell, the shell is respectively provided with a feed port and a discharge port along the axial direction of the first impeller, and the outer side of the shell is provided with a first motor for driving the first impeller to rotate. When injection molding raw materials enter the shell through the feeding port, the first motor drives the first impeller to rotate, the injection molding raw materials are stirred through rotation of the first impeller, the injection molding raw materials flow along with rotation of the impeller, the flow speed of the injection molding raw materials is increased, and the injection molding raw materials flow out of the discharging port below the shell; and therefore, the effect of effectively improving the speed of the injection molding raw materials entering the injection mold is achieved.

Description

Technical Field

[0001] The present application relates to the field of injection molding machines, and in particular to a material guiding mechanism for an injection molding machine. Background Art

[0002] At present, injection molding is a relatively widely used method for parts manufacturing. In the manufacturing process, polyethylene, polypropylene and other materials that melt into liquid after heating are usually used as the injection raw materials required for injection molding. The melted raw materials are poured into the injection mold in the injection molding machine, and the raw materials are cooled and naturally formed into the preset shape in the injection mold. Finally, the injection mold is opened to take out the completed injection molded workpiece in the injection mold.

[0003] Regarding the above-mentioned related technologies, since the liquid injection molding material is still relatively viscous, the injection molding material may flow slowly or even get stuck during the process of pouring the liquid injection molding material into the injection mold. Utility Model Content

[0004] In order to improve the efficiency of injection molding raw materials entering the injection mold, the present application provides a material guiding mechanism for an injection molding machine.

[0005] The present application provides a material guiding mechanism for an injection molding machine, which adopts the following technical solution:

[0006] A material guiding mechanism for an injection molding machine comprises a shell, wherein a horizontal first impeller is arranged inside the shell, two sides of the first impeller are rotatably connected to the inner wall of the shell, a feed inlet and a discharge outlet are respectively opened in the shell along the axial direction of the first impeller, and a first motor for driving the first impeller to rotate is arranged outside the shell.

[0007] By adopting the above technical solution, when the injection molding raw material enters the shell through the feed port, the first motor drives the first impeller to rotate, and the injection molding raw material is stirred by the rotation of the first impeller, so that the injection molding raw material flows with the rotation of the impeller, thereby increasing the flow rate of the injection molding raw material, and causing the injection molding raw material to flow out to the discharge port below the shell, and then enter the injection mold, effectively increasing the rate at which the injection molding raw material enters the injection mold.

[0008] Optionally, a second impeller is provided on the horizontal side of the first impeller, the second impeller is rotatably connected to the inner wall of the shell, the shell is provided with a second motor for driving the second impeller to rotate, the blades of the first impeller and the blades of the second impeller are cross-arranged, and the first impeller and the second impeller rotate in opposite directions.

[0009] By adopting the above technical solution, when the first impeller rotates, the second impeller rotates in the opposite direction at the same time. By setting the second impeller, the flow rate of the injection molding raw material is further increased, and the injection molding raw material is fully mixed between the first impeller and the second impeller due to the different rotation directions of the first impeller and the second impeller, thereby effectively improving the uniformity of the injection molding raw material.

[0010] Optionally, the blades of the first impeller and the blades of the second impeller are both provided with guide slopes, and when the first impeller and the second impeller rotate, the guide slopes squeeze the injection molding material downwards.

[0011] By adopting the above technical solution, when the first impeller and the second impeller rotate, the downward inclined guide slope of the blade will push and extrude the injection molding material in contact with it downward, exerting a downward discharge force on the injection molding material, effectively increasing the pressure of the injection molding material at the discharge port, thereby increasing the flow rate of the injection molding material when it is discharged through the discharge port.

[0012] Optionally, the shell includes a heating layer, the heating layer is located outside the shell, and a plurality of heating tubes are arranged in the heating layer.

[0013] By adopting the above technical solution, when there is injection molding material inside the shell, the injection molding material inside the shell is heated by the heating layer, and the fluidity of the injection molding material is improved by increasing the temperature of the injection molding material, thereby effectively increasing the fluidity of the injection molding material.

[0014] Optionally, a discharge pipe is fixedly connected to the lower side of the discharge port, and a valve for controlling the flow of the discharge pipe is provided on the outer side of the discharge pipe.

[0015] By adopting the above technical solution, the injection molding material discharged from the discharge port is guided by installing a discharge pipe. When the injection molding material needs to be discharged to the outside, the valve is opened to allow the injection molding material to be discharged into the injection mold, thereby effectively controlling the flow of the material guiding mechanism.

[0016] Optionally, the inner wall of the discharge pipe is provided with a Teflon coating.

[0017] By adopting the above technical solution, the Teflon coating has the characteristic of a small friction coefficient. When the injection molding material contacts the inner wall of the discharge pipe through the discharge pipe, the friction force is greatly reduced, which effectively increases the speed of the injection molding material passing through the discharge pipe.

[0018] Optionally, the feed port is connected to a hopper, an annular groove is provided on an upper end surface of the feed port, and a clamping ring matched with the annular groove is provided on a lower end surface of the hopper.

[0019] By adopting the above technical solution, a hopper is installed above the feed port, so that part of the injection molding raw materials can be temporarily stored inside the hopper, effectively realizing continuous feeding of the injection molding material guiding mechanism.

[0020] Optionally, the shell is provided with an observation hole connecting the inside and outside of the shell, and an observation window for closing the observation hole is provided outside the observation hole, and the observation window is made of transparent material.

[0021] By adopting the above technical solution, an observation hole is opened in the shell and an observation window is arranged at the observation hole, so that the operator can observe the inside of the material guiding mechanism of the injection molding machine, thereby facilitating the operator to effectively observe the working conditions inside the shell.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When the injection molding raw material enters the shell through the feed port, the first motor drives the first impeller to rotate, and the injection molding raw material is stirred by the rotation of the first impeller, so that the injection molding raw material flows with the rotation of the impeller, thereby increasing the flow rate of the injection molding raw material, so that the injection molding raw material flows out to the discharge port below the shell, and then enters the injection mold, effectively increasing the rate at which the injection molding raw material enters the injection mold;

[0024] 2. When the first impeller rotates, the second impeller rotates in the opposite direction at the same time. By setting the second impeller, the flow rate of the injection molding material is further increased, and the injection molding material is fully mixed between the first impeller and the second impeller due to the different rotation directions of the first impeller and the second impeller, which effectively improves the uniformity of the injection molding material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a schematic diagram of the overall structure of a material guiding mechanism of an injection molding machine.

[0026] Figure 2 It is a cross-sectional schematic diagram of the overall structure.

[0027] Explanation of the reference numerals: 1. Shell; 11. Heating layer; 111. Heating tube; 12. Feed inlet; 121. Hopper; 13. Discharge outlet; 131. Discharge tube; 132. Teflon coating; 133. Valve; 14. First motor; 15. Second motor; 16. Observation window; 2. First impeller; 21. Guide slope; 3. Second impeller. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0029] The embodiment of the present application discloses a material guiding mechanism for an injection molding machine.

[0030] Reference Figure 1 and Figure 2, a material guiding mechanism for an injection molding machine, comprising a housing 1, a first impeller 2 is arranged inside the housing 1, the first impeller 2 is driven to rotate by a first motor 14 outside the housing 1, a feed port 12 is provided on the upper end surface of the housing 1, and a discharge port 13 is provided on the lower end surface of the housing 1. The injection molding material inside the housing 1 is stirred by the rotation of the first impeller 2, so that the flow speed of the injection molding material is effectively increased, so that the injection molding material is discharged from the discharge port 13 and enters the injection mold at a faster flow rate, thereby increasing the efficiency of the injection molding material entering the injection mold

[0031] Reference Figure 2 In order to continuously feed the injection molding material guide mechanism, a hopper 121 is installed above the feed port 12, and the diameter of the hopper 121 gradually increases from top to bottom. The larger diameter of the top of the hopper 121 allows the interior of the hopper 121 to temporarily store some liquid injection molding materials, so that the injection molding materials enter the interior of the shell 1 through the connection between the hopper 121 and the feed port 12, thereby realizing continuous feeding of the interior of the shell 1.

[0032] Reference Figure 2 When the injection molding raw material passes through the hopper 121 and enters the interior of the housing 1, in order to maintain the temperature of the liquid injection molding raw material during the stirring process to maintain the fluidity of the injection molding raw material. Since the injection molding raw material has the characteristics of low temperature and poor fluidity, a heating layer 11 is installed on the outside of the housing 1 and a number of heating rods are placed in the heating layer 11 to heat the interior of the housing 1. The injection molding raw material is heated, thereby maintaining the fluidity of the injection molding raw material.

[0033] Reference Figure 2 , a second impeller 3 is installed on the horizontal side of the first impeller 2, and the second impeller 3 is also rotatably connected to the inner wall of the housing 1, and a second motor 15 for driving the second impeller 3 to rotate is installed on the outer side of the housing 1. In order to make the two impellers have a better mixing effect on the injection molding materials inside the housing 1 when rotating, the blades of the first impeller 2 and the blades of the second impeller 3 are cross-arranged. In order to prevent the first impeller 2 and the second impeller 3 from interfering with each other during rotation, the first impeller 2 and the second impeller 3 rotate at opposite angles. Therefore, the first impeller 2 and the second impeller 3 can rotate at the same time. The reverse rotation of the first impeller 2 and the second impeller 3 makes the liquid injection molding materials inside the housing 1 uniformly stirred, thereby improving the uniformity of the injection molding materials. Compared with the stirring of a single impeller, the double impeller stirring formed by the first impeller 2 and the second impeller 3 further accelerates the flow rate of the liquid, and also facilitates the injection molding materials to enter the injection mold through the discharge port 13.

[0034] Reference Figure 2A guide slope 21 is provided on the blades of the first impeller 2 and the second impeller 3, and the guide slope 21 is inclined downward. When the first impeller 2 and the second impeller 3 rotate, the backflow slope first contacts the injection molding material. When the injection molding material passes through the blades, the guide slope 21 squeezes the injection molding material downward, so that the injection molding material has a tendency to flow downward, which effectively increases the pressure out of the discharge port 13. The flow rate of the injection molding material passing through the discharge port 13 is further improved. In turn, the efficiency of the injection molding material passing through the discharge port 13 is increased.

[0035] Reference Figure 2 A discharge pipe 131 is installed at the discharge port 13, and the discharge pipe 131 is connected to the injection mold inside the injection molding machine, and a valve 133 for controlling the flow is installed outside the discharge pipe. In this embodiment, a ball valve is preferably used as the flow control valve. When it is necessary to control the flow of the injection molding material entering the injection mold, the ball valve is rotated to control the opening of the ball valve and thus control the flow.

[0036] Reference Figure 2 Since the friction between the inner wall of the discharge pipe 131 and the injection molding material will also affect the flow rate of the injection molding material and the feeding effect on the injection molding equipment, in order to reduce the friction between the injection molding material and the inner wall of the discharge pipe 131, a Teflon coating 132 is installed on the inner wall of the discharge pipe 131 to reduce the friction between the inner wall of the discharge pipe 131 and the injection molding material.

[0037] Reference Figure 1 and Figure 2 An observation hole connecting the inside and outside of the housing 1 is provided. In this embodiment, glass is preferably used as the material of the observation window 16, and the observation window 16 is installed at one end of the observation hole close to the outside of the housing 1. The operator can monitor the situation inside the housing 1 through the observation window 16. When an unexpected situation occurs, it is also convenient for the operator to judge the situation through the observation window 16 and quickly make corresponding countermeasures.

[0038] The implementation principle of the material guiding mechanism of an injection molding machine in the embodiment of the present application is as follows: the first motor 14 drives the first impeller 2, and the second motor 15 drives the second impeller 3, and the flow rate of the injection molding material is increased and the uniformity is increased through the rotation of the first impeller 2 and the second impeller 3. The injection molding material is pushed by the blade with the guide slope 21.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A material guiding mechanism for an injection molding machine, comprising a housing (1), characterized in that: A first horizontal impeller (2) is arranged inside the shell (1), and both sides of the first impeller (2) are rotatably connected to the inner wall of the shell (1). The shell (1) is provided with a feed inlet (12) and a discharge outlet (13) along the axial direction of the first impeller (2). A first motor (14) for driving the first impeller (2) to rotate is arranged outside the shell (1). A second impeller (3) is arranged on the horizontal side of the first impeller (2), and the second impeller (3) is rotatably connected to the inner wall of the shell (1). The shell (1) is provided with a second motor (15) for driving the second impeller (3) to rotate. The blades of the first impeller (2) and the blades of the second impeller (3) are arranged crosswise, and the first impeller (2) and the second impeller (3) rotate in opposite directions. The blades of the first impeller (2) and the blades of the second impeller (3) are both provided with guide slopes (21). When the first impeller (2) and the second impeller (3) rotate, the guide slopes (21) squeeze the injection molding material downward.

2. The material guiding mechanism of an injection molding machine according to claim 1, characterized in that: The shell (1) comprises a heating layer (11), the heating layer (11) is located outside the shell (1), and a plurality of heating tubes (111) are arranged inside the heating layer (11).

3. The material guiding mechanism of an injection molding machine according to claim 1, characterized in that: A discharge pipe (131) is fixedly connected to the lower side of the discharge port (13), and a valve (133) for controlling the flow of the discharge pipe (131) is provided on the outer side of the discharge pipe (131).

4. The material guiding mechanism of an injection molding machine according to claim 3, characterized in that: The inner wall of the discharge pipe (131) is provided with a Teflon coating (132).

5. The material guiding mechanism of an injection molding machine according to claim 1, characterized in that: The feed port (12) is connected to a hopper (121), an upper end surface of the feed port (12) is provided with an annular groove, and a lower end surface of the hopper (121) is provided with a clamping ring adapted to the annular groove.

6. The material guiding mechanism of an injection molding machine according to claim 1, characterized in that: The shell (1) is provided with an observation hole communicating with both sides of the shell (1) inside and outside, and an observation window (16) for closing the observation hole is provided outside the observation hole, and the observation window (16) is made of a transparent material.

Images