CN202106537U - Device for automatically controlling length and weight of extruder discharging unit - Google Patents
Device for automatically controlling length and weight of extruder discharging unit Download PDFInfo
- Publication number
- CN202106537U CN202106537U CN2011201859832U CN201120185983U CN202106537U CN 202106537 U CN202106537 U CN 202106537U CN 2011201859832 U CN2011201859832 U CN 2011201859832U CN 201120185983 U CN201120185983 U CN 201120185983U CN 202106537 U CN202106537 U CN 202106537U
- Authority
- CN
- China
- Prior art keywords
- hopper
- lever
- controller
- scale hooper
- drive unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/9218—Weight
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92676—Weight
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a device for automatically controlling the length and the weight of an extruder discharging unit, which comprises a controller and a weighing apparatus. The weighing apparatus comprises a raw material hopper, a frame, a weighing hopper and a feed hopper. The raw material hopper and the feed hopper are respectively arranged on the upper end and the lower end of the frame. The lower outlet of the raw material hopper is equipped with a gate. The weighing hopper is arranged between the raw material hopper and the feed hopper. One side of the weighing hopper is connected with one end of a lever and the other end of the lever passing through a support is equipped with a counterweight. The fulcrum of the lever is hinged to the frame. A lever upper sensor is arranged beside the lever. The lower outlet of the weighing hopper is equipped with a material position sensor. The device is simplified in structure, lower in manufacture cost, simple in control principle, convenient to operate and easy in maintenance and debugging. The precision of the device can meet the production need.
Description
Technical field
The utility model relates to a kind of device of automatic control extruder discharging unit weight, is mainly used on inflation film manufacturing machine, drawbench, electric wire machine, plastics wrapping machine and spray silk (bar) machine the length of discharging, the uniformity of thickness are controlled.
Background technology
Prior art adopts electronic scale to measure charging rate; Then according to the extruding screw of charging rate control extruder or the rotating speed of carry-over pinch rolls; The rotating speed of charging rate and described extruding screw is inversely proportional to, or is directly proportional, keep film thickness even with the rotating speed of carry-over pinch rolls.Its shortcoming is a complex structure, and cost is high, is difficult for maintenance and debugging.And the flow of employing solid flow sensor measurement particulate material can only be suitable for specific raw material, in case change raw material or adopt mixed material; Must readjust the output of processor, owing to relate to the very strong technology of specialty row, the user is difficult to accomplish; Can only adjust by the manufacturer, very trouble.
Summary of the invention
The purpose of the utility model just provides a kind of device of automatic control extruder discharging unit weight, and to solve the complex structure that prior art exists, cost is high, is difficult for the problem of maintenance and debugging.
The technical scheme of the utility model is: a kind of device of automatic control extruder discharging unit weight; Comprise controller and meausring apparatus; The input of this controller is connected with meausring apparatus; The output of this controller is connected with the motor of the extruding screw of extruder or the drive motors of carry-over pinch rolls; It is characterized in that: described meausring apparatus comprises former hopper, frame, scale hooper and feed hopper, and former hopper and feed hopper are installed in the top and bottom of frame respectively, and the lower end outlet of this feed hopper is connected with the charging aperture of extruder; In the outlet of the lower end of this former hopper former hopper gate is housed, this former hopper gate is connected with first drive unit; Described scale hooper is installed between former hopper and the feed hopper; One side of this scale hooper is connected with an end of a lever; The other end of this lever passes frame and a counterweight is housed; The fulcrum of this lever is hinged on this frame, and this scale hooper, lever and weight set become balance unit that the raw material that at every turn adds in the scale hooper is carried out quantitatively; Be provided with position-limit mechanism and feed supplement sensor up and down on this lever next door; In the lower end of described feed hopper the blowing sensor is housed; In the outlet of the lower end of described scale hooper the blowing gate and second drive unit are housed, controlled end, feed supplement sensor and the blowing sensor of this first drive unit and second drive unit are connected with described controller respectively.
The device of described automatic control extruder discharging unit weight is characterized in that: described first drive unit and second drive unit all adopt fluid cylinder, cylinder or electric device.
The device of described automatic control extruder discharging unit weight is characterized in that: on described carry-over pinch rolls, speed probe is housed, and is connected with described controller.
The device of described automatic control extruder discharging unit weight is characterized in that: described controller adopts microcomputer or Programmable Logic Controller.
The device of described automatic control extruder discharging unit weight is characterized in that: described counterweight is through being threaded on the described lever.
The utility model has the advantages that: control principle is simple, and operation simplifies the structure easily, has reduced manufacturing cost, and precision can satisfy the production needs, easily maintenance and debugging; Be applicable to various single raw materials or compound.
Description of drawings
Fig. 1 is the general structure sketch map that the utility model is applied in the embodiment on the extruder.
The specific embodiment
Referring to Fig. 1; The device of a kind of automatic control extruder discharging unit weight of the utility model; Comprise controller 18 and meausring apparatus; The input of this controller is connected with meausring apparatus, and the output of this controller is connected with the motor 14 of the extruding screw of extruder or the drive motors of carry-over pinch rolls 16, it is characterized in that: described meausring apparatus comprises former hopper 1, frame 2, scale hooper 7 and feed hopper 8; Former hopper 1 and feed hopper 8 are installed in the top and bottom of frame 2 respectively, and the lower end outlet of this feed hopper 8 is connected with the charging aperture of extruder; In the outlet of the lower end of this former hopper 1 former hopper gate 3 is housed, this former hopper gate 3 is connected with first drive unit 4; Described scale hooper 7 is installed between former hopper 1 and the feed hopper 8; One side of this scale hooper 7 is connected with an end of a lever 11; The other end of this lever 11 passes frame 2 and a counterweight 12 is housed; The fulcrum of this lever 11 is hinged on this frame 2, and this scale hooper 7, lever 11 and counterweight 12 are formed balance unit the raw material that at every turn adds in the scale hooper 7 is carried out quantitatively.Be provided with position-limit mechanism 10 and feed supplement sensor 13 up and down on these lever 11 next doors, this feed supplement sensor 13 is used for being in when the next at scale hooper 7 and sends the feed supplement information that stops to controller 18, closes former hopper gate 3 by controller 18.In the lower end of described feed hopper 8 blowing sensor 19 is housed, is used for sending blowing information to controller 18.In the outlet of the lower end of described scale hooper 7 blowing gate 22 and connected second drive unit 5 are housed, controlled end, feed supplement sensor 13 and the blowing sensor 19 of this first drive unit 4 and second drive unit 5 all are connected with controller 18.
Described first drive unit 4 and second drive unit 5 all adopt fluid cylinder, cylinder or electric device.
On described carry-over pinch rolls 16, speed probe 20 is housed, and is connected with described controller 18, speed probe changes the rotating speed of 20 detection carry-over pinch rolls 16.
Described controller 18 adopts microcomputer or Programmable Logic Controller.
Described counterweight 12 can be adjusted at the position on the lever 11 easily through being threaded on the lever 11, to change the weight of weighing.
The course of work of the utility model said apparatus (method of the utility model) and control principle explanation be (is example to produce plastic sheeting) as follows:
At first on controller 18, set every meter weight A of input product, like 1 gram/rice, and in former hopper 1, fill raw material, the weight of counterweight 12 is configured (for example the weight W of counterweight 12 be equivalent to the former hopper 1 interior 1000g of dress raw material) according to designing requirement.After system started working, owing to do not have raw material in the original state scale hooper 7, so that counterweight 12 1 ends of lever 11 are under the effect of gravity is the next, scale hooper 7 was in upper.
The course of work is following:
1) blowing: the material level that detects extruder charging aperture place with blowing sensor 19; When material level is lower than setting value; Blowing sensor 19 sends blowing information to controller 18; The blowing gate 22 that controller 18 is opened under the scale hooper 7 all is discharged into the material in the scale hooper 7 in the feed hopper 8, closes blowing gate 22 subsequently.
2) feed supplement: open former hopper gate 3 and in scale hooper 7, replenish material; Adopt the balance weighing mode to limit the weight W of each scale hooper raw material; When feed supplement reaches setting weight W, scale hooper 7 moves to the next, triggers feed supplement sensor 13 simultaneously; The latter sends the feed supplement information that stops to controller 18, and controller 18 cuts out former hopper gate 3.
3) repeat blowing: repeating step 1, repeating step 2;
4) unit of account time feed supplement amount: controller 18 calculates the cycle T of adjacent twice blowing step, promptly is the used duration of raw material of every charging one scale hooper of extruder, and calculates unit interval feed supplement amount B, B=W/T.
If cycle T is steady state value (as 50 seconds), then controller 18 is controlled carry-over pinch rolls 16 according to certain rotation speed operation according to the product parameters of setting (film thickness).According to the above-mentioned parameter that provides, extruder per second load (that is unit interval feed supplement amount) is B=W/T=1000/50=20g/s.
5) rotating speed of calculating extruder carry-over pinch rolls: with the every meter weight A (1g/m) of extruder per second load B (20g/s) divided by product, the rotating speed that promptly obtains carry-over pinch rolls 16 should be 20m/s.
6) rotating speed of adjustment carry-over pinch rolls: controller 18 is adjusted into 20m/s according to the rotating speed of the carry-over pinch rolls 16 that speed probe 20 detects to it.
When the rotating speed of extruder 15 because a variety of causes (like the variation of voltage pulsation or internal structure etc.) when reducing; Make charging rate slack-off, above-mentioned cycle T prolongs (like 55s), and the degree that this moment, controller 18 prolonged according to this cycle T calculates the rotating speed (1000/55/1=18.18m/s of carry-over pinch rolls 16; Rotating speed reduces); Or the rotating speed of raising extruder motor 14, to satisfy the requirement of every meter weight A (1g/m), keep the thickness of membrane even.
If the rotating speed of extruder accelerates, then charging rate improves, and causes cycle T to shorten (like 45s); The degree that this moment, controller 18 shortened according to this cycle T calculates the rotating speed (1000/45/1=22.22m/s of carry-over pinch rolls 16; Improved the rotating speed of carry-over pinch rolls 16), or the rotating speed of reduction extruder motor 14, to satisfy the requirement of every meter weight A (1g/m); Automatically adjust film thickness thereby reach, make it keep uniform purpose.
Claims (5)
1. automatic device of control extruder discharging unit weight; Comprise controller and meausring apparatus; The input of this controller is connected with meausring apparatus, and the output of this controller is connected with the motor of the extruding screw of extruder or the drive motors of carry-over pinch rolls, and it is characterized in that: described meausring apparatus comprises former hopper, frame, scale hooper and feed hopper; Former hopper and feed hopper are installed in the top and bottom of frame respectively, and the lower end outlet of this feed hopper is connected with the charging aperture of extruder; In the outlet of the lower end of this former hopper former hopper gate is housed, this former hopper gate is connected with first drive unit; Described scale hooper is installed between former hopper and the feed hopper; One side of this scale hooper is connected with an end of a lever; The other end of this lever passes frame and a counterweight is housed; The fulcrum of this lever is hinged on this frame, and this scale hooper, lever and weight set become balance unit that the raw material that at every turn adds in the scale hooper is carried out quantitatively; Be provided with position-limit mechanism and feed supplement sensor up and down on this lever next door; In the lower end of described feed hopper the blowing sensor is housed; In the outlet of the lower end of described scale hooper the blowing gate and second drive unit are housed, controlled end, feed supplement sensor and the blowing sensor of this first drive unit and second drive unit are connected with described controller respectively.
2. the device of automatic control extruder discharging unit weight according to claim 1 is characterized in that: described first drive unit and second drive unit all adopt fluid cylinder, cylinder or electric device.
3. the device of automatic control extruder discharging unit weight according to claim 1 is characterized in that: on described carry-over pinch rolls, speed probe is housed, and is connected with described controller.
4. the device of automatic control extruder discharging unit weight according to claim 1 is characterized in that: described controller adopts microcomputer or Programmable Logic Controller.
5. the device of automatic control extruder discharging unit weight according to claim 1 is characterized in that: described counterweight is through being threaded on the described lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201859832U CN202106537U (en) | 2011-06-03 | 2011-06-03 | Device for automatically controlling length and weight of extruder discharging unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201859832U CN202106537U (en) | 2011-06-03 | 2011-06-03 | Device for automatically controlling length and weight of extruder discharging unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202106537U true CN202106537U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201859832U Expired - Fee Related CN202106537U (en) | 2011-06-03 | 2011-06-03 | Device for automatically controlling length and weight of extruder discharging unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202106537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260315A (en) * | 2014-08-27 | 2015-01-07 | 江苏亨通高压电缆有限公司 | Extruding machine automatic weighing system |
-
2011
- 2011-06-03 CN CN2011201859832U patent/CN202106537U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260315A (en) * | 2014-08-27 | 2015-01-07 | 江苏亨通高压电缆有限公司 | Extruding machine automatic weighing system |
| CN104260315B (en) * | 2014-08-27 | 2017-03-15 | 江苏亨通高压海缆有限公司 | Automatic weighing system of plastic extruding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20140603 |