CN203004295U - Device for servo control on wall thickness by digital cam wheel - Google Patents
Device for servo control on wall thickness by digital cam wheel Download PDFInfo
- Publication number
- CN203004295U CN203004295U CN2012207381477U CN201220738147U CN203004295U CN 203004295 U CN203004295 U CN 203004295U CN 2012207381477 U CN2012207381477 U CN 2012207381477U CN 201220738147 U CN201220738147 U CN 201220738147U CN 203004295 U CN203004295 U CN 203004295U
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- CN
- China
- Prior art keywords
- wall thickness
- digital cam
- support plate
- nut
- servo control
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
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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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/04116—Extrusion blow-moulding characterised by the die
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a plastic extrusion-blow wall thickness control device and particularly relates to a device for servo control on the wall thickness by a digital cam wheel. The device comprises a digital cam wheel software system and a servo motor control mechanical device, wherein the servo motor control mechanical device comprises a servo motor, a ball screw helical pair, a guide post, a fixed support plate, a movable support plate, piston rods, a guide moving mechanism, a hydraulic gravity balance mechanism, a cylinder fixing plate, precision cylinders, an extrusion die head device and a rack. The device is mainly used for controlling the wall thickness of a plastic extrusion bottle blowing machine in the dairy industry, the shape of the digital cam wheel can be changed according to different products, and plastic products with different wall thicknesses can obtained through extrusion blow. According to the device, the digital cam wheel and the servo motor are applied to the device, strength of the product which has uniform wall thickness and is extruded by the device is greatly improved, raw materials are saved simultaneously, the cooling time of a finished product is shortened, the defective rate is reduced, the production rate and the product quality are improved greatly.
Description
Technical field
The utility model relates to a kind of plastic extrusion blowing wall thickness control device, particularly a kind of device of digital cam SERVO CONTROL wall thickness.
Background technology
Hollow plastic product adopts the method for blowing to obtain, goods have been stipulated minimum wall thickness (MINI W.) because of its requirement of strength, and early stage hollow blow molding equipment lacks the system of parison wall thickness control system, for making the goods thinnest part reach the minimum wall thickness (MINI W.) requirement, other position of goods will correspondingly thicken, and causes the waste of material.In order to save cost, shorten goods cool times, to accelerate the production of articles cycle, a kind of both economical way adopts the digital cam servomotor to control system of parison wall thickness exactly.At present, the wall thickness controller of domestic use has the product of the companies such as Mu Ge (M00G), Bei Jialai (B﹠R), Siemens (SIEMENS).In the wall thickness controller device of these products, the control of the plug of vital part mainly adopts the PID electrohydraulic proportional control valve to control or mechanical cam is controlled.By being combined by electro-hydraulic proportional reducing valve and hydraulicchange-over valve, and control the size of forward and reverse opening of hydraulicchange-over valve according to outlet pressure, thereby control the direction of liquid stream and the size of flow, final displacement and the direction of controlling plug, this device is owing to adopting hydraulic control, so the characteristics such as life period hysteresis quality systems itself is easy to be subject to external influence and causes control accuracy lower.And adopt mechanical cam can obtain continuous control, and the problem that lags behind of life period not, but higher pair is namely put or the line contact because the kinematic pair of cam mechanism belongs to, so wear extent is large, and a cam is only for a kind of hollow plastic product, and flexible degree is lower.This device is to adopt the servo control system of digital cam in conjunction with the characteristics of above device, servomotor realizes controlling plug by ball screw, and the kinematic pair of this device has adopted roller line slideway, has rigidity high, kinematic accuracy is high, the brisk characteristics of moving.Only for a kind of limitation point of product, this device adopts the digital cam can be according to the shape of different product changed digital cams, thereby has flexible characteristics, can produce the plastic products of various wall thickness controls for mechanical cam.
The utility model content
The technical problems to be solved in the utility model is: for above-mentioned Shortcomings, provide a kind of simple in structure, Wall Thickness Control System is easy to operate, and it is fast to have a motion response, the device of the digital cam SERVO CONTROL wall thickness of the characteristics that control accuracy is high.
The technical scheme that the utility model adopts is: a kind of device of digital cam SERVO CONTROL wall thickness, comprised digital cam software systems and servomotor controller tool device,
Described servomotor controller tool device comprises servomotor, ball screw spiral pair, lead, fixed support plate, movable supporting plate, piston rod, guiding movable device, hydraulic pressure gravitational equilibrium mechanism, cylinder body fixed head, accurate cylinder body, extrusion die device and frame;
Described ball screw spiral pair is comprised of ball-screw, ball and nut;
Described extrusion die device controls plug by extrusion die, wall thickness and the hot-fluid deferent forms;
Described servomotor is linked together by flanged joint and ball-screw;
One end of described ball-screw is supported by the precise roller deep groove ball bearing, and the other end is supported by a precise roller deep groove ball bearing and thrust ball bearing;
Described precise roller deep groove ball bearing is arranged on bearing supporting frame, and precise roller deep groove ball bearing and thrust ball bearing are arranged on fixed support plate;
Described nut is arranged on the nut support plate, and it is fixed with each other that nut, nut support plate, movable supporting plate, piston rod and wall thickness are controlled plug.
This device is exported responsive control signal by the control signal point in the shape of the generation of digital cam, thereby servomotor produces corresponding action under the effect of control signal.At last, wall thickness is controlled plug and is moved up and down under the effect of ball wire, and the motion of plug makes die gap change, and reaches wall thickness and controls purpose.
Preferably, described digital cam software systems comprise man-machine interactive interface and digital cam software module, wherein man-machine interface provides the user to edit digital cam control point data, data are imported PLC into by communication interface (RS232), specific data district's preservation and the action of control servomotor in PLC.
Preferably, described digital cam software systems adopt extrusion-blown modling system of parison wall thickness Control System Software module.
Preferably, the secondary screw-drive mechanism that adopts of described ball screw spiral is equipped with the intermediate transmission element between its spiral fluted leading screw and nut, and described intermediate transmission element is ball.The ball screw spiral pair is mainly used to rotatablely moving of servomotor is transformed to the rectilinear motion of plug.
Preferably, described guiding movable device is comprised of feed screw nut, nut support frame, movable guide plate.This mechanism moves up and down under the effect of leading screw and lead.
Preferably, described hydraulic pressure gravitational equilibrium mechanism is comprised of hydraulic cylinder, reversal valve, overflow valve, vane pump and piston rod.The gravity that this mechanism is mainly used in hydraulic coupling and guiding movable device balances each other.
Preferably, described piston rod is arranged in accurate cylinder body, and accurate cylinder body is fixed on the frame support plate.
Preferably, described fixed support plate comprises the first fixed support plate and the second fixed support plate, and described servomotor is arranged on the first fixed support plate, and described precise roller deep groove ball bearing and thrust ball bearing are arranged on the second fixed support plate.
The extrusion die device is mainly used in wall thickness control plug and moves up and down acting on of screw mandrel, adjusts the size of die gap.
The utility model is mainly used in the wall thickness of plastic extrusion bottle blowing machine in dairy industry and controls, and can change the shape of digital cam according to different products, and extrusion blow goes out the plastic products of different wall.The utility model uses digital cam and servomotor in this device, by this device extrude the uniform goods of wall thickness not only intensity improve a lot, simultaneously also saved raw material, shortened finished product cool time, reduce defect rate, greatly improved the quality of productivity ratio and product.
Description of drawings
Fig. 1 structural representation of the present utility model;
Fig. 2 main cutaway view of the present utility model;
Extrusion die apparatus structure cutaway view in Fig. 3 the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but is not restriction to the utility model protection domain.
As shown in Figure 1-Figure 3, the present embodiment is to change the shape of digital cam according to different product, and extrusion blow goes out a kind of device of digital cam SERVO CONTROL wall thickness of the plastic products of different wall.Device has the motion response soon, the high characteristics of control accuracy.Digital cam servomotor wall thickness control device has comprised digital cam software systems 16, servomotor 1, ball screw spiral is secondary, extrusion die device and hydraulic pressure gravity balance device 2, described servomotor 1 is arranged on the first fixed support plate 3, and is linked together by flanged joint 17 and ball-screw 7.One end of described ball-screw 7 is supported by precise roller deep groove ball bearing 18, and the other end is supported by a precise roller deep groove ball bearing 19 and thrust ball bearing 20.Precise roller deep groove ball bearing 18 is arranged on bearing supporting frame 4, and precise roller deep groove ball bearing 19 and thrust ball bearing 20 are arranged on the second fixed support plate 9.Described ball screw spiral pair is comprised of ball-screw 7, ball 6-2 and nut 6.Nut 6 is arranged on above nut support plate 6-1.It is fixed with each other that nut 6, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness are controlled plug 15, can move up and down on guide support column 5 with nut 6 together.Described piston rod 10 is arranged in accurate cylinder body 11, and accurate cylinder body 11 is fixed on frame support plate 13.Described extrusion die device mainly controls plug 15 by extrusion die 14, wall thickness and hot-fluid deferent 12 forms.The main extrusion-blown modling system of parison wall thickness Control System Software (ZJ-BHCS V1.0) that adopts of described digital cam software systems 16, the digital cam profile that provides the extrusion-blown modling system of parison wall thickness to control, PLC and serial ports of computers data exchanging function also comprise the man-machine interface of carrying out the manufacturing system of extrusion-blown modling system of parison wall thickness control with PLC.
the operation principle of the present embodiment is as follows: on the software systems 16 of digital cam, set the shape of digital cam according to the extrusion blow product wall thickness, control servomotor 1 control signal by P LC and the output of serial ports of computers data exchanging function, servomotor 1 begins to rotate under the control of wall thickness control signal, ball-screw 7 rotates with servomotor 1 by flange-face coupling 17, ball-screw 7, ball and nut 6 form the ball screw spiral pair and start working, the upper of conversion nut 6 that rotatablely move of leading screw, lower movement, the nut 6 of fixing together with nut 6 simultaneously, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness are controlled plug 15 and are begun action.And the motion of wall thickness control plug 15 makes the die gap of extrusion die 14 change, and reaches product wall thickness and controls purpose.
More effectively work in order to make between servomotor 1 and ball spiral pair, and reduce owing to selecting servo motor model number to select the excessive huge cost that produces, this device can external hydro-cushion gravity installation 2, be used for to offset the weight that nut 6, nut support plate 6-1, movable supporting plate 8, piston rod 10 and wall thickness are controlled plug 15, perhaps can add balancing weight mechanism and be used for offsetting above-mentioned part gravity.In order to realize reducing the servomotor cost, the device motion responds fast and accurate high.
Claims (8)
1. the device of a digital cam SERVO CONTROL wall thickness, comprised digital cam software systems and servomotor controller tool device, it is characterized in that:
Described servomotor controller tool device comprises servomotor, ball screw spiral pair, lead, fixed support plate, movable supporting plate, piston rod, guiding movable device, hydraulic pressure gravitational equilibrium mechanism, cylinder body fixed head, accurate cylinder body, extrusion die device and frame;
Described ball screw spiral pair is comprised of ball-screw, ball and nut;
Described extrusion die device controls plug by extrusion die, wall thickness and the hot-fluid deferent forms;
Described servomotor is linked together by flanged joint and ball-screw;
One end of described ball-screw is supported by the precise roller deep groove ball bearing, and the other end is supported by a precise roller deep groove ball bearing and thrust ball bearing;
Described precise roller deep groove ball bearing is arranged on bearing supporting frame, and precise roller deep groove ball bearing and thrust ball bearing are arranged on fixed support plate;
Described nut is arranged on the nut support plate, and it is fixed with each other that nut, nut support plate, movable supporting plate, piston rod and wall thickness are controlled plug.
2. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: described digital cam software systems comprise man-machine interactive interface and digital cam software module, wherein man-machine interface provides the user to edit digital cam control point data, data are imported PLC into by communication interface (RS232), specific data district's preservation and the action of control servomotor in PLC.
3. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 2, is characterized in that: described digital cam software systems employing extrusion-blown modling system of parison wall thickness Control System Software module.
4. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: the secondary screw-drive mechanism that adopts of described ball screw spiral, between its spiral fluted leading screw and nut, the intermediate transmission element is housed, described intermediate transmission element is ball.
5. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: described guiding movable device is comprised of feed screw nut, nut support frame, movable guide plate.
6. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: described hydraulic pressure gravitational equilibrium mechanism is comprised of hydraulic cylinder, reversal valve, overflow valve, vane pump and piston rod.
7. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: described piston rod is arranged in accurate cylinder body, and accurate cylinder body is fixed on the frame support plate.
8. the device of a kind of digital cam SERVO CONTROL wall thickness according to claim 1, it is characterized in that: described fixed support plate comprises the first fixed support plate and the second fixed support plate, described servomotor is arranged on the first fixed support plate, and described precise roller deep groove ball bearing and thrust ball bearing are arranged on the second fixed support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207381477U CN203004295U (en) | 2012-12-28 | 2012-12-28 | Device for servo control on wall thickness by digital cam wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207381477U CN203004295U (en) | 2012-12-28 | 2012-12-28 | Device for servo control on wall thickness by digital cam wheel |
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| Publication Number | Publication Date |
|---|---|
| CN203004295U true CN203004295U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207381477U Expired - Fee Related CN203004295U (en) | 2012-12-28 | 2012-12-28 | Device for servo control on wall thickness by digital cam wheel |
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| CN (1) | CN203004295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009608A (en) * | 2012-12-28 | 2013-04-03 | 浙江机电职业技术学院 | Integrated device for controlling wall thickness by digital cam and servo motor |
| WO2021074353A1 (en) * | 2019-10-15 | 2021-04-22 | Kautex Maschinenbau Gmbh | Extrusion unit for forming plastic preforms, and profiling technique |
| CN115157631A (en) * | 2022-07-02 | 2022-10-11 | 佛山市必创自动化设备有限公司 | Servo wall thickness control driving system |
-
2012
- 2012-12-28 CN CN2012207381477U patent/CN203004295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009608A (en) * | 2012-12-28 | 2013-04-03 | 浙江机电职业技术学院 | Integrated device for controlling wall thickness by digital cam and servo motor |
| CN103009608B (en) * | 2012-12-28 | 2015-04-29 | 浙江机电职业技术学院 | Integrated device for controlling wall thickness by digital cam and servo motor |
| WO2021074353A1 (en) * | 2019-10-15 | 2021-04-22 | Kautex Maschinenbau Gmbh | Extrusion unit for forming plastic preforms, and profiling technique |
| CN115157631A (en) * | 2022-07-02 | 2022-10-11 | 佛山市必创自动化设备有限公司 | Servo wall thickness control driving system |
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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: 20130619 Termination date: 20131228 |