Automatic material returning device of injection molding machine

Abstract

The utility model discloses an automatic material returning device of an injection molding machine, which comprises a feed hopper, a discharge slide block, a discharge slide way and a material returning mechanism, the lower end of the feed hopper is connected with the discharge slide block, the discharge slide way is arranged in the discharge slide way, a first feed opening is arranged on the discharge slide block, and a second feed opening is arranged on the discharge slide block. The discharging slideway is provided with a plurality of second discharging ports, the lower portion of one second discharging port is connected with a feeding pipeline, the lower portions of the other second discharging ports are connected with discharging pipelines, and the other ends of the discharging pipelines are connected with a material returning tank. Through the arrangement of the discharging slide way, the discharging slide block can move on the surface of the discharging slide way, so that raw materials can be quickly discharged from the bottom of the feeding hopper and enter different material returning tanks, the discharging time is saved, and the working efficiency is improved; through the arrangement of the material returning mechanism, the material pumping fan can pump raw materials in the material returning tank into the feeding hopper again for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine accessory technical field mainly relates to an injection molding machine automatic material returning device. BACKGROUND

[0002] Injection molding machine is the thermoplastic or thermosetting plastics using plastic molding die into various shapes plastic products main forming equipment, divided into vertical, horizontal, all electric, can heat plastic, melt plastic and exert high pressure, make it shoot and fill the mold cavity.

[0003] In order to guarantee that raw material is sufficient, generally first add raw material to hopper when feeding, then slowly add injection molding machine. When changing material, residual raw material needs to be unloaded first. The existing method of excluding residual raw material is to open the top of feeding hopper and then dig out the residual raw material in the feeding hopper from the top. This operation method is time-consuming and is not conducive to enterprise production. However, after unloading is completed, it is inconvenient to transport the raw material back into the hopper. UTILITY MODEL CONTENT

[0004] The utility model aims at solving some problems in the prior art. Therefore, the purpose of the utility model is to provide an injection molding machine automatic material returning device.

[0005] To achieve the above-mentioned purpose, the utility model realizes by the following technical scheme:

[0006] An injection molding machine automatic material returning device, comprising a feeding hopper, an unloading sliding block, an unloading slide and a material returning mechanism, the lower end of the feeding hopper is connected with the unloading sliding block, the unloading slide is installed in the unloading slide, a first discharge port is formed in the unloading sliding block, the unloading slide is provided with a plurality of second discharge ports, one of the second discharge ports is connected with a feeding pipe below, the remaining second discharge ports are connected with unloading pipes below, and the other end of the unloading pipe is connected with a material returning tank.

[0007] As a preferred, the material returning mechanism comprises a material pumping fan, a control valve, a first pipe, a second pipe and a third pipe, the air outlet of the material pumping fan is connected with the feeding hopper through the first pipe, the air inlet of the material pumping fan is connected with the control valve through the second pipe, and the control valve is connected with the material returning tank through the second pipe.

[0008] As a preferred, the control valve is connected with a first connecting pipe above and a plurality of second connecting pipes below, the first connecting pipe is connected with the second pipe, and the second connecting pipe is connected with the third pipe.

[0009] As a preferred, a plurality of air cylinders are further arranged above the control valve, the output shaft of the air cylinder is located in the control valve, a plug is connected with the output shaft of the air cylinder, and the plug corresponds to the second connecting pipe.

[0010] Preferably, the diameter of the first discharge port is smaller than the second discharge port.

[0011] Preferably, the discharge slide is provided with an inclined handle.

[0012] Preferably, the feeding hopper is provided with a transparent observation window.

[0013] Preferably, the feeding hopper and the discharge pipeline are both provided with flow valves.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The discharge slide can move on the surface, so that the raw materials can be quickly discharged from the bottom of the feeding hopper and enter different return tanks, thereby saving the discharge time and improving the work efficiency.

[0016] 2. The return mechanism is provided, and the material suction fan can re-suck the raw materials in the return tank to the feeding hopper for use.

[0017] The features and advantages of the present application will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a perspective view of the whole application;

[0019] Fig. 2 It is a sectional view of the control valve of the present application;

[0020] Fig. 3 It is a perspective view of the discharge slide and the discharge slide of the present application.

[0021] Reference signs: 1. Feeding hopper, 11. Transparent observation window, 2. Discharge slide, 21. First discharge port, 22. Handle, 3. Discharge slide, 31. Second discharge port, 4. Return tank, 5. Material suction fan, 6. Control valve, 61. First connecting pipe, 62. Second connecting pipe, 63. Air cylinder, 64. Plug, 7. First pipeline, 8. Second pipeline, 9. Third pipeline, 10. Flow valve, 11. Feeding pipeline, 12. Discharge pipeline. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0023] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description herein refers to the accompanying drawings, which show by way of illustration various embodiments of the application. The description taken with the drawings are intended to explain aspects of the application and are not intended to limit the application. Various embodiments of the application will be described herein which are merely examples of apparatuses consistent with aspects of the application as detailed in the appended claims.

[0024] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical terms or scientific terms used herein are intended to have the meanings commonly understood by one of ordinary skill in the art to which this application pertains. Further, unless otherwise required by context, singular terms shall include pluralities and vice versa when used herein. The use herein of the terms "one" or "a" or "the" or similar referents is intended to be construed as including one or more, unless otherwise indicated by context. The terms "comprises", "comprising", "includes", "including" and the like can be used herein, and are intended to mean that an apparatus, system or process can include a singular component or multiple components, the components being heremetically sealed, but the components are not limited to a certain number of components. The use herein of "connected" or "coupled" or similar referents is intended to be construed as including a direct connection between two or more components or a connection that is not direct but via one or more other components. The use herein of singular forms of "a", "an" and "the" is intended to include the plural form of the term, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0025] Reference should be made to Figs. 1-3 The automatic material returning device of injection molding machine comprises a feeding hopper 1, a discharging sliding block 2, a discharging slide 3 and a material returning mechanism. The lower end of the feeding hopper 1 is connected with the discharging sliding block 2. The discharging slide 3 is installed in the discharging slide 3. The discharging sliding block 2 can move in the discharging slide 3. The first discharging port 21 is arranged on the discharging sliding block 2. The discharging slide 3 is provided with three second discharging ports 31. The leftmost one of the second discharging ports 31 is connected with a feeding pipeline 11 below. The feeding pipeline 11 is connected with the injection molding machine and provides raw materials for the injection molding machine. The other two second discharging ports 31 are connected with discharging pipelines 12 below. The other ends of the discharging pipelines 12 are connected with the material returning tanks 4. The material returning tanks 4 are used for storing the excess raw materials. The number of the material returning tanks 4 is two. The two material returning tanks 4 can be used for storing two different raw materials.

[0026] Based on the above technical means: when feeding, align the first discharge port 21 on the discharge slider 2 with the leftmost second discharge port 31, the raw material in the feeding hopper 1 enters the leftmost second discharge port 31 through the first discharge port 21 on the discharge slider 2, and then enters the injection molding machine through the feeding pipe 11 to provide raw material for the injection molding machine; when discharging, align the first discharge port 21 on the discharge slider 2 with the middle or rightmost second discharge port 31, the raw material in the feeding hopper 1 enters the middle or rightmost second discharge port 31 through the first discharge port 21 on the discharge slider 2, and then enters the return tank 4 through the discharge pipe 12 for storage.

[0027] Further, the return mechanism includes a material extraction fan 5, a control valve 6, a first pipe 7, a second pipe 8, and a third pipe 9. The outlet of the material extraction fan 5 is connected to the feeding hopper 1 through the first pipe 7, the inlet of the material extraction fan 5 is connected to the control valve 6 through the second pipe 8, and the control valve 6 is connected to the return tank 4 through the second pipe 8.

[0028] Based on the above technical means: when the raw material in the return tank 4 needs to be used, the material extraction fan 5 can be started to extract the raw material in the return tank 4 back to the feeding hopper 1.

[0029] Further, the control valve 6 is connected to a first connecting pipe 61 above and two second connecting pipes 62 below. The first connecting pipe 61 is connected to the second pipe 8, and the second connecting pipe 62 is connected to the third pipe 9.

[0030] Further, two air cylinders 63 are provided above the control valve 6. The output shaft of the air cylinder 63 is located in the control valve 6, and a plug 64 is connected to the output shaft of the air cylinder 63. The plug 64 corresponds to the second connecting pipe 62.

[0031] Based on the above technical means: by setting the control valve 6, the raw material in one of the return tanks 4 can be extracted by the air. Specifically, please refer to Fig. 2 When the raw material in the middle return tank 4 needs to be used, the right air cylinder 63 is started, the output shaft of the air cylinder 63 is elongated to block the right third pipe 9, at this time the left third pipe 9 is opened, and then the material extraction fan 5 is started, which can extract the raw material in the middle return tank 4 and send it to the feeding hopper 1 for reuse; when the raw material in the right return tank 4 needs to be used, the left air cylinder 63 is started, the output shaft of the air cylinder 63 is elongated to block the left second pipe 8, at this time the right third pipe 9 is opened, and then the material extraction fan 5 is started, which can extract the raw material in the right return tank 4 and send it to the feeding hopper 1 for reuse.

[0032] Further, the diameter of the first discharge port 21 is smaller than that of the second discharge port 31, which facilitates the raw material to leave the feeding hopper 1.

[0033] Further, the unloading slide 2 is provided with an inclined handle 22, and the staff can pull the unloading slide 2 through the handle 22, thereby changing the position of the feeding hopper 1.

[0034] Further, the feeding hopper 1 is provided with a transparent observation window 11, and the staff can observe the discharging condition of the feeding hopper 1 through the transparent observation window 11.

[0035] Further, the feeding hopper 1 and the unloading pipeline 12 are both provided with flow valves 10, and the feeding and discharging of the feeding hopper 1 and the unloading pipeline 12 can be opened or closed through the flow valves 10.

[0036] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic material return device for an injection molding machine, characterized by, Including the feeding hopper, the unloading slide, the unloading slide and the back material mechanism, the feeding hopper lower end is connected with the unloading slide, the unloading slide is installed in the unloading slide, the unloading slide is opened with the first discharge port, the unloading slide is opened with the second discharge port, wherein one second discharge port is connected with the feeding pipe below, the rest second discharge port is connected with the unloading pipe below, the unloading pipe other end is connected with the back material tank.

2. The automatic material return device for injection molding machines according to claim 1, characterized in that, The back material mechanism includes the material extraction fan, the control valve, the first pipe, the second pipe and the third pipe, the air outlet of the material extraction fan is connected with the feeding hopper through the first pipe, the air inlet of the material extraction fan is connected with the control valve through the second pipe, the control valve is connected with the back material tank through the second pipe.

3. The automatic material return device for injection molding machines according to claim 2, characterized in that, The control valve is connected with the first connecting pipe above, is connected with a plurality of second connecting pipes below, the first connecting pipe is connected with the second pipe, the second connecting pipe is connected with the third pipe.

4. The automatic material return device for injection molding machines according to claim 3, characterized in that, The control valve is also provided with a plurality of air cylinders above, the output shaft of the air cylinder is located in the control valve, the output shaft of the air cylinder is connected with the plug, the plug corresponds with the second connecting pipe.

5. The automatic material return device for injection molding machines according to any one of claims 1 to 4, characterized in that, The diameter of the first discharge port is less than the second discharge port.

6. The automatic material return device for injection molding machines according to any one of claims 1 to 4, characterized in that, The unloading slide is provided with the inclined handle.

7. The automatic material return device for injection molding machines according to any one of claims 1 to 4, characterized in that The feeding hopper is installed with the transparent observation window.

8. The automatic material return device for injection molding machines according to any one of claims 1 to 4, characterized in that, The feeding hopper and the unloading pipe are all provided with the flow valve.

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