CN110640978B - Operation method of mixed feeding hopper - Google Patents
Operation method of mixed feeding hopper Download PDFInfo
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- CN110640978B CN110640978B CN201910874874.2A CN201910874874A CN110640978B CN 110640978 B CN110640978 B CN 110640978B CN 201910874874 A CN201910874874 A CN 201910874874A CN 110640978 B CN110640978 B CN 110640978B
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- control valve
- hopper
- material level
- return
- mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76351—Feeding
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses an operation method of a mixed feeding hopper, which comprises the steps of firstly inputting a feed back with the duration of m, then executing the steps of inputting the feed back and supplementing materials or delaying for waiting for the duration of n according to the detection result of a material level meter, and detecting the height of the material level by the material level meter in real time again in the process of inputting a new material so as to ensure that the quantity of the input new material does not exceed a full material line. Its technical scheme makes the operation in-process can preferentially use the feed back, and the reinforced action of automatic execution guarantees the material level height in the hopper, avoids appearing the putty condition that the scarce material condition and material level too high arouse, realizes unmanned, and the time length can ensure the accuracy that the charge level indicator detected, eliminates interference signal when delaying k.
Description
Technical Field
The invention relates to the technical field of feeding machine equipment on an injection molding machine, in particular to an operation method of a mixed feeding hopper.
Background
Along with the popularization of environmental awareness and policy, the plastic recycling market is gradually mature, wherein the most important mode is to use the recycled blocky plastic as a return material after being crushed into PP or PE particles by a crusher and mixed into a new material to form a mixed material to be injected into a feed inlet of an injection molding machine for use. In addition, the return material also includes the residual granules after injection molding of a certain product, and the mixing operation is also generally adopted. The prior mixing mode and method generally adopt synchronous or interval injection of new materials and return materials into a hopper, and the return materials are difficult to selectively use preferentially in specific use, which is only equivalent to using the return materials as an additive, and the main components of the mixed materials are still the new materials.
Disclosure of Invention
In view of the above problems in the prior art, a method for operating a mixing and feeding hopper is provided to overcome the above technical drawbacks, by which the feed back can be preferentially used and the feeding action can be automatically performed during the operation.
The specific technical scheme is as follows:
a method for operating a mixed feeding hopper comprises a hopper body, wherein at least one level indicator is arranged on the inner wall of the hopper body, a full material horizontal line in the hopper body is defined by the level indicator, a new material inlet and a return material inlet are formed in the upper end of the hopper body, a new material conveying line is arranged in the new material inlet, a first control valve is arranged on the path of the new material conveying line, a return material conveying line is arranged in the return material inlet, a second control valve is arranged on the path of the return material conveying line, and a discharge hole communicated with a feed inlet of an injection molding machine is formed in the lower end of the hopper body; the operation method of the mixing and feeding hopper comprises the following steps:
step a, opening a second control valve, inputting a return material into the hopper body from a return material conveying line, wherein the input time is m, closing the second control valve after m time, delaying for waiting for k time, and executing the step b;
b, detecting the material level height by a material level meter, and if the material level height is not lower than a full material horizontal line, delaying for n time and then executing the step a again;
if the material level height is lower than the full material horizontal line, opening a first control valve, inputting new materials into the hopper body through a new material conveying line, detecting the material level height in real time by a material level meter, and within the duration of n, if the material level height detected by the material level meter at any time is lower than the full material horizontal line, executing a material supplementing step, and after the duration of n is continued, switching the first control valve to a closed state no matter the first control valve is in an open or closed state, and executing the step a again;
the feeding step comprises:
step c: closing the first control valve and delaying the waiting time of k;
step d: detecting the material level height by the material level meter again, and opening the first control valve again if the material level height is still lower than the full material horizontal line; and if the material level height is not lower than the full material level, executing the step c again.
Preferably, the mixing and feeding hopper further comprises an external controller, the material level indicator is electrically connected with the external controller, and the first control valve and the second control valve are electrically connected with the external controller through a valve actuator respectively.
Preferably, one end of the feed back conveying line, which is far away from the hopper body, is communicated to the external crusher.
Preferably, the new material conveying line and the return material conveying line are respectively provided with a positive pressure type feeding mechanism.
Preferably, m is 15 seconds, n is 4 minutes, and k is 5 seconds.
The beneficial effects of the above technical scheme are that:
in the operation method of the mixed feeding hopper, firstly, a feed back with the time length of m is input, then the time length of k is delayed, then the step of inputting the feed back and the material supplementing is executed or the time length of waiting for n is delayed according to the detection result of the material level meter, the material level height is detected by the material level meter in real time in the process of inputting the new material again so as to ensure that the quantity after inputting the new material does not exceed a full material line, the feed back can be preferentially used in the operation process, the feeding action is automatically executed, the material level height in the hopper is ensured, the material shortage condition and the material blocking condition caused by the overhigh material level are avoided, the unmanned operation is realized, the detection accuracy of the material level meter can be ensured by the time length of k delay, and interference signals are eliminated.
Drawings
FIG. 1 is a schematic view of a mixing feed hopper in a method of operating a mixing feed hopper according to the present invention;
fig. 2 is a basic logic diagram of the method of operation of the mixing feed hopper of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following embodiments are specifically described with reference to the attached drawings.
Referring to fig. 1 and fig. 2, in the operation method of the mixing feeding hopper provided in this embodiment, the mixing feeding hopper includes a hopper body 1, at least one level indicator 2 is installed on an inner wall of the hopper body 1, and a full level line inside the hopper body 1 is defined by the level indicator 2, the upper end of the hopper body 1 has a new material inlet and a return material inlet, a new material conveying line 4 is installed in the new material inlet, a first control valve 6 is installed on a path of the new material conveying line 4, a return material conveying line 5 is installed in the return material inlet, a second control valve 7 is installed on a path of the return material conveying line 5, and a discharge port communicated to a feed port of an injection molding machine is formed at a lower end of the hopper body 1; the operation method of the mixing and feeding hopper comprises the following steps:
step a, opening a second control valve 7, inputting a return material into the hopper body 1 by a return material conveying line 5, wherein the input time is m, closing the second control valve 7 after m time, delaying the waiting time k, and executing the step b;
b, detecting the material level height by the material level meter 2, and if the material level height is not lower than a full material horizontal line, delaying for n time and then executing the step a again;
if the material level height is lower than the full material level, a first control valve 6 is opened, new materials are input into the hopper body 1 through a new material conveying line 4, the material level meter 2 detects the material level height in real time, in the duration of n, if the material level height detected by the material level meter 2 at any time in the duration is lower than the full material level, a material supplementing step is executed, after the duration is prolonged to n, the first control valve 6 is switched to a closed state no matter the first control valve 6 is in an open or closed state, and the step a is executed again;
the feeding step comprises:
step c: closing the first control valve 6 and delaying for waiting for k time;
step d: the material level meter 2 detects the material level height again, and if the material level height is still lower than the full material level line, the first control valve 6 is opened again; and if the material level height is not lower than the full material level, executing the step c again.
Based on the technical scheme, in the operation method of the mixed feeding hopper, the returned material with the time length of m is input firstly, then the step of inputting new material and feeding is executed or the time length of delaying waiting for n is executed according to the detection result of the material level meter 2, the material level height is detected by the material level meter 2 in real time in the process of inputting new material again so as to ensure that the quantity after inputting new material does not exceed a full material line, the returned material can be preferentially used in the operation process, the feeding action is automatically executed, the material level height in the hopper is ensured, the material shortage condition and the material blocking condition caused by overhigh material level are avoided, the unmanned operation is realized, the time length of delaying k can ensure the accuracy of detection of the material level meter 2, and interference signals are eliminated.
In a preferred embodiment, during the operation of the mixing and feeding hopper, the lower end of the hopper body 1 can be provided with a valve, and the valve is in a normally open state, that is, for the hopper body 1, the feeding and discharging actions are simultaneously performed. Furthermore, the mixed feeding hopper also comprises an external controller, the charge level indicator 2 is electrically connected with the external controller, and the first control valve 6 and the second control valve 7 are respectively electrically connected with the external controller through a valve actuator so as to realize the purpose of unified control. Specifically, the peripheral controller is a PLC controller, and the peripheral controller can be independently installed on the outer wall of the hopper body 1 and can also be integrated in a control system of the injection molding machine. Further, the feed back transfer chain 5 deviates from one end of the hopper body 1 and is communicated to an external crusher, and the external crusher can crush the recovered massive plastic into particles. Furthermore, positive pressure type feeding mechanisms are respectively arranged on the new material conveying line 4 and the return material conveying line 5 and are used for driving the material particles in the conveying lines to flow. Specifically, the new material conveying line 4 and the return material conveying line 5 are both formed by pipelines, the positive pressure type feeding mechanism is arranged on the path of the pipelines, the positive pressure type feeding mechanism sends positive pressure type wind power to the hopper body 1 along the conveying line so as to realize feeding action, and meanwhile, the positive pressure type feeding mechanism is also electrically connected with an external controller so as to realize the purpose of unified control. In addition, the positive pressure type feeding mechanism can also adopt a negative pressure type feeding mechanism or a pulse type feeding mechanism, and the feeding mechanisms are all conventional equipment, so that the repeated description is omitted.
As a further preferable embodiment, in the present embodiment, m is 15 seconds, n is 4 minutes, and k is 5 seconds, but the change can be preset on the external controller according to the production requirement (mainly, the material usage parameter in the production of the injection molding machine, the capacity of the hopper body 1, and the flow parameter of the conveying line), and is not limited to this. In practical application, the duration n mainly aims to realize a standby time in the feeding process, so that on one hand, gas can be saved, on the other hand, new materials can be supplemented after m-duration feed backs have been input, and the material level height of material particles in the hopper body 1 is not lower than a full material level line. In addition, on the premise that the value set by the m is large enough or the flow of the returned material output is enough, the equipment can only execute the operation of consuming the returned material according to the production requirement.
It should be noted that, based on the above, a whole feeding period is m + n duration, and the circulation is uninterrupted. In addition, the whole operation process can be adjusted to be a manual mode under the condition that the equipment is electrified or not electrified, so that the material is manually loaded according to the quantity of the loaded material, and the device is flexible and practical. Moreover, if a product is close to the rated production quantity, the feeding of new materials can be manually turned off, only the returned materials are fed, and the utilization rate is maximized until all the returned materials are used up.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The operation method of the mixing feeding hopper is characterized in that the mixing feeding hopper comprises a hopper body (1), at least one level indicator (2) is installed on the inner wall of the hopper body (1), a full material horizontal line inside the hopper body (1) is defined by the level indicator (2), a new material inlet and a return material inlet are formed in the upper end of the hopper body (1), a new material conveying line (4) is installed in the new material inlet, a first control valve (6) is installed on the path of the new material conveying line (4), a return material conveying line (5) is installed in the return material inlet, a second control valve (7) is installed on the path of the return material conveying line (5), and a discharge hole communicated with a feed port of an injection molding machine is formed in the lower end of the hopper body (1); the operation method of the mixing and feeding hopper comprises the following steps:
step a, opening the second control valve (7), inputting a return material into the hopper body (1) through the return material conveying line (5), wherein the input time is m, and closing the second control valve (7) after m time;
b, detecting the material level height by the material level meter (2), and if the material level height is not lower than a full material horizontal line, delaying for waiting for n time and then executing the step a again;
if the material level height is lower than the full material horizontal line, opening the first control valve (6), inputting a new material into the hopper body (1) through the new material conveying line (4), detecting the material level height in real time by the material level meter (2), executing a material supplementing step if the material level height is detected to be lower than the full material horizontal line by the material level meter (2) at any time within the duration of n, and after the duration of n is continued, switching the first control valve (6) to a closed state no matter whether the first control valve (6) is in an open state or a closed state, and executing the step a again;
the feeding step comprises the following steps:
step c: closing the first control valve (6) and delaying for a waiting time of k;
step d: detecting the material level height by the material level meter (2) again, and opening the first control valve (6) again if the material level height is still lower than the full material level line; and if the material level height is not lower than the full material level, executing the step c again.
2. The method of operating a mixing hopper according to claim 1, characterised in that the mixing hopper further comprises an external controller and the level indicator (2) is electrically connected to the external controller, the first control valve (6) and the second control valve (7) being electrically connected to the external controller by means of valve actuators, respectively.
3. Method for operating a mixing feed hopper according to claim 1, characterised in that the end of the return conveyor line (5) facing away from the hopper body (1) communicates to an external crusher.
4. The method of operating a mixing hopper according to claim 1, characterised in that positive pressure feeding means are provided on the fresh feed line (4) and the return feed line (5), respectively.
5. The method of operating a mixing feed hopper as recited in claim 1 wherein m is 15 seconds, n is 4 minutes and k is 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874874.2A CN110640978B (en) | 2019-09-17 | 2019-09-17 | Operation method of mixed feeding hopper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910874874.2A CN110640978B (en) | 2019-09-17 | 2019-09-17 | Operation method of mixed feeding hopper |
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| CN110640978A CN110640978A (en) | 2020-01-03 |
| CN110640978B true CN110640978B (en) | 2021-08-24 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08336837A (en) * | 1995-06-09 | 1996-12-24 | Toyota Motor Corp | Resin molding using recyclable material and manufacture thereof |
| US10977622B2 (en) * | 2009-09-09 | 2021-04-13 | Ultra Smart Recycling Llc | Smart waste device and waste tracking system |
| FR3039445B3 (en) * | 2015-07-31 | 2018-03-16 | Matair | MODULE FOR TRANSPORTING NEW WELDING FLUX AND / OR RECYCLED TO THE HOPPER OF THE HEAD OF THE WELDING TORCH, BASED ON A FEEDING PRINCIPLE BY SEVERAL STORAGE AND CONSERVATION MODULES |
| CN208068729U (en) * | 2018-02-27 | 2018-11-09 | 广西萨泰汽车部件系统有限公司 | The injection molding machine of recyclable waste material |
| CN208020613U (en) * | 2018-02-27 | 2018-10-30 | 广西萨泰汽车部件系统有限公司 | The injection molding machine that raw material efficiently utilizes |
| CN208133365U (en) * | 2018-05-07 | 2018-11-23 | 宁波诺博特机械有限公司 | A kind of two material ratio mixed-hoppers |
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Address after: 315000 No. 28, Yunshan Middle Road, Sanqi Town, Yuyao City, Ningbo City, Zhejiang Province (in Yuyao talent entrepreneurship Park) Patentee after: Norbert (Ningbo) Intelligent Technology Co.,Ltd. Address before: 315400 No. 5, shaonan Road, Fengshan street, Yao City, Ningbo City, Zhejiang Province Patentee before: NINGBO NUOBOTE MACHINERY Co.,Ltd. |