CN210415439U - Plastic mechanical vibration extruder head device - Google Patents
Plastic mechanical vibration extruder head device Download PDFInfo
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- CN210415439U CN210415439U CN201920731042.0U CN201920731042U CN210415439U CN 210415439 U CN210415439 U CN 210415439U CN 201920731042 U CN201920731042 U CN 201920731042U CN 210415439 U CN210415439 U CN 210415439U
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- vibration
- push rod
- machine head
- cam
- mechanical vibration
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- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 229920003023 plastic Polymers 0.000 title claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 210000004907 gland Anatomy 0.000 claims abstract description 7
- 230000033001 locomotion Effects 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a plastics mechanical vibration extrudes aircraft nose device especially relates to a cam push rod mechanical vibration and extrudes, aims at changing the flow property when the material is extruded, weakens and extrudes the action of expanding, reduction production energy consumption. The device comprises an extrusion part and an auxiliary device for realizing mechanical vibration, wherein the two parts are horizontally arranged. The extrusion part mainly comprises a filter plate, a machine head body, a mouth die body, a shunting cone, a shunting core body, a vibration cavity, a mouth die gland and the like. The auxiliary device for realizing mechanical vibration comprises an alternating current servo motor, an elastic pin coupling, a sliding bearing, a camshaft and a push rod. The auxiliary device for realizing mechanical vibration is fixed on the movable support with the roller, and the depth of the push rod inserted into the vibration cavity can be adjusted by controlling the movable support with the roller, so that the amplitude of the vibration system is adjusted. Adjustment of the vibration frequency can be achieved. The device has the advantages of simple structure, simple and convenient frequency and amplitude adjustment, good safety and wide application value.
Description
Technical Field
The invention relates to the technical field of plastic extrusion molding, in particular to a mechanical vibration extruder head molding device with a cam push rod.
Background
Extrusion molding is an important processing method for plastic processing molding, and currently, a single-screw extruder and a double-screw extruder are widely applied in China. In the traditional screw extruder, solid materials are completely conveyed by friction in the process of plasticizing and conveying the solid materials, plasticizing and melting are mainly carried out by external heating and shearing heat, and melts are mainly conveyed by the process of shearing the melts, so that the defects of low material plasticizing and conveying efficiency, nonuniform plasticization and the like exist. In recent years, researches on melt vibration extrusion have been made at home and abroad. Through the research on vibration extrusion, people find that the vibration field can change the rheological property of the melt, such as shear thinning, and simultaneously can effectively reduce the residual stress, reduce the extrusion pressure, weaken the extrusion swelling behavior, reduce the production energy consumption and improve the product quality stability. The vibration extrusion molding device is characterized in that a vibration field is additionally arranged in the extrusion molding process of plastic materials so as to change the flow property of the materials during extrusion. Through the continuous exploration of vibration extrusion molding at home and abroad, the main vibration forms at present comprise mechanical vibration, ultrasonic vibration and electromagnetic vibration.
The mechanical vibration comprises push rod shearing motion, rotary shearing motion bidirectional vibration, parallel vertical superposition shearing motion, a capillary dynamic rheometer and the like. The so-called push rod shearing movement is that the plastic melt is sheared by the pull rod in the neck mold through the push-pull action of the piston on the pull rod, and the material can do circumferential movement along the core rod and generate orientation, so that the circumferential strength and the rigidity are improved to a certain extent.
The prior patent 201310325886.2 discloses that the mechanical vibration is realized by a crank-connecting rod mechanism, a crank is driven by an alternating current servo motor, a connecting rod is connected with a piston, and the other end of the piston is connected with a connecting rod extending into a machine head. The vibrating device is fixedly connected above the extruder head, and the amplitude of the vibration process cannot be changed due to the fixed moving stroke of the piston. In addition, the power transmitted by the alternating current servo motor of the device passes through the crank connecting rod structure, then passes through the piston and finally realizes the up-and-down reciprocating vibration by the connecting rod, so that the device is not only complex in structure, but also relatively large energy loss can be caused because the power is transmitted through the motion of the intermediate member and the transmission route is relatively long. In addition, the link mechanism is not suitable for high-speed movement, and the adjustment range of the vibration frequency of the rubber material is limited. The interior of the machine head is in a straight-through form without a sprue spreader, and the problems of large pressure loss, uneven plasticization, insufficient molding pressure and the like are easily caused by overlong flow channels.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a novel mechanical vibration extruder head for plastic molding. The device can effectively expand the application of the plastic vibration molding technology and better meet the production requirement of plastic products.
The technical scheme of the invention is as follows: the plastic mechanical vibration extruder head device is realized by an additional cam push rod device, a cam shaft is driven by an alternating current servo motor to rotate so as to drive a push rod to realize reciprocating telemechanical, the initial positions of cams are different, and the reciprocating motion states of the push rod are also different. The push rod reciprocates in the plastic melt to shear and extrude the plastic melt, so that the flowing state of the plastic melt is changed, the vibration extrusion is realized, and the plasticizing effect is further enhanced.
The technical scheme of the invention is as follows: a plastic mechanical vibration extruder head device realizes reciprocating motion in a vibration cavity through a push rod. The push rod is contacted with the groove part of the cam, and the cam shaft rotates under the driving of the alternating current servo motor so as to drive the push rod to move. The adjustment of the frequency of the alternating current servo motor can realize the adjustment of the reciprocating motion frequency of the push rod. The whole auxiliary device for realizing mechanical vibration is fixed on the movable support with the roller, wherein the roller has a self-locking function, and the depth of the push rod inserted into the vibration cavity can be adjusted by controlling the movable support with the roller, so that the amplitude of the vibration system can be adjusted, and the adjustment range of the amplitude is 0-30 mm.
The plastic mechanical vibration extruder head device used for the method comprises an extrusion part and an auxiliary device for realizing mechanical vibration, wherein the extrusion part mainly comprises a filter plate, a machine head body, a mouth die body, a shunting cone bracket, a shunting core body, a vibration cavity, a mouth die and a mouth die gland. The auxiliary device for realizing mechanical vibration comprises an alternating current servo motor, an elastic pin coupling, a sliding bearing, a camshaft and a push rod. The alternating current servo motor is connected with the camshaft through the elastic pin coupling, and sliding bearings are installed at two ends of the camshaft. The push rod is inserted into the vibration cavity of the handpiece through a hole formed on the handpiece body.
The push rod is simultaneously pressed by the cam and the material, so that the stability of the push rod is ensured.
The cam is a typical grooved cam structure selected, is in the shape of an eccentric circle, and is driven by an alternating current servo motor.
The alternating-current servo motor is connected with the camshaft through the elastic pin coupling, transmission of movement and power is guaranteed, the camshaft and the elastic pin coupling are in interference fit, and the camshaft and the sliding bearing are in clearance fit. The frequency of the reciprocating motion of the push rod, namely the vibration frequency, can be adjusted by adjusting the frequency of the alternating current servo motor.
The push rod is inserted into the vibration cavity of the handpiece through a hole formed on the handpiece body. The push rod is connected with the cam groove in an interference fit mode, and the cam shaft is driven by the alternating-current servo motor to rotate so as to drive the push rod to realize reciprocating telemechanical movement.
The whole auxiliary device for realizing mechanical vibration is fixed on the movable support with the roller, wherein the roller has a self-locking function, and the depth of the push rod inserted into the vibration cavity can be adjusted by controlling the movable support with the roller, so that the amplitude of the vibration system can be adjusted.
The machine head is connected with the extruder through flanges, the size of a connecting hole of the machine head flange is consistent with that of a connecting hole of a flange of the extruder barrel, the flanges are fixed on the machine head body and the extruder barrel through welding connection, the two flanges are fastened through bolts, all the connecting bolts are circumferentially and uniformly distributed, and the coaxiality of the connection between the machine head and the extruder is guaranteed.
The connection of the machine head body and the mouth mold body adopts thread fit. The mouth mold gland is fixed on the mouth mold body through an inner hexagonal socket head cap screw, and then the mouth mold is compressed. The neck ring mold is connected with the neck ring mold body through bolts.
The shunting cone and the shunting cone bracket adopt a welding structure, and the shunting cone and the shunting core body are connected through threads. The matching modes of the shunting cone support and the machine head body and the vibration cavity and the machine head body are interference fit.
Compared with the prior art, the invention has the following advantages:
1. compared with the traditional screw extruder, the shearing and the vibration of the plastic melt in the machine head are realized through the additional device, and the plasticizing is more uniform under the shunting action of the shunting cone of the machine head, so that a better effect is achieved.
2. The mechanical vibration is realized through an additional cam push rod structure, and the mechanical vibration-proof device is simple in structure, easy to process, low in cost and convenient to install.
3. Through the drive of the alternating-current servo motor, the transmission of the motion of the cam shaft is short in transmission route and low in energy consumption.
4. The frequency of the reciprocating motion of the push rod can be controlled by controlling the frequency of the alternating current servo motor. The auxiliary device for realizing mechanical vibration is fixed on the movable support with the roller, and the movable support with the roller can realize the adjustment of the motion amplitude of the push rod.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1.
Detailed Description
The present invention will be described in further detail with reference to the following examples and the accompanying drawings.
Example as shown in fig. 1, an extruded rod is taken as an example, and a vibration power field is added. The machine head is connected with the extruder through flanges, the size of a connecting hole of the machine head flange is consistent with that of a connecting hole of a flange of the extruder barrel, the flanges are fixed on the machine head body and the extruder barrel through welding connection, the two flanges are fastened through bolts, all the connecting bolts are circumferentially and uniformly distributed, and the coaxiality of the connection between the machine head and the extruder is guaranteed.
Plastics become the molten state through the plastify, the shearing of screw rod, the heating of feed cylinder in the barrel of extruder, evenly flow to the aircraft nose through the hole of filter 16 in, plastics fuse-element passes through spreader cone 15, becomes linear motion by the helical motion, forms certain compression ratio, obtains further shearing, makes the plastify more even. The shunt cone 15 and the shunt cone bracket 14 are of welded structure. The plastic melt is further conveyed onwards through a split core 13 to a vibration chamber 12 and finally to a die 10, where the rod is extruded.
The shunt cone 15 and the shunt cone bracket 14 adopt a welding structure, and the shunt cone 15 and the shunt core body 13 are connected through threads. The matching mode of the shunt cone bracket 14 and the machine head body 11 and the vibration cavity 12 and the machine head body 11 is interference fit. The mouth mould 10 is connected with the mouth mould body 6 through a bolt 7, the mouth mould body 6 is connected with the mouth mould gland 9 through an inner hexagonal socket head cap screw 8, and the mouth mould 10 is in tight fit with the mouth mould gland 9. Reasonable cooling loops such as a baffle plate, a drill hole and the like can be arranged in the machine head, and the temperature of the machine head body is controlled to meet the extrusion requirement.
When the plastic melt passes through the vibration cavity 12, the alternating current servo motor 1 drives the elastic pin coupler 2 to transmit force and torque to drive the cam shaft 4 to rotate, the cam is of a typical groove cam structure, the shape of the cam is an eccentric circle, the number of the groove cams is not limited to 3, the number of the groove cams can be 3-5, and the cam shaft 4 can adopt a welding or integral casting structure. The reciprocating motion of the push rod 5 is realized through the interference fit of the cam and the push rod 5. The camshaft 4 and the sliding bearing 3 are in clearance fit, and the sliding bearing 3 bears a radial load. Vibration chamber 12 and the 11 interference fit of locomotive body, the length in vibration chamber 12 should satisfy the length that can hold 3 ~ 6 push rods 5, vibration chamber 12 sets up the bush with the hookup location of push rod 5, the outer face of cylinder of bush is connected with vibration chamber 12 inner wall interference fit, the bush hole is with 5 clearance fit of push rod, it is 0.03 ~ 0.08mm to select the clearance volume according to melt viscosity, 0.05 ~ 0.08mm clearance volume can be selected to the high-viscosity fuse-element, 0.03 ~ 0.05mm clearance volume can be selected to the low-viscosity fuse-element.
The adjustment of the vibration frequency in the flowing process of the sizing material is realized by adjusting the frequency of the alternating current servo motor 1, and further adjusting the frequency of the reciprocating motion of the push rod 5. The amplitude adjustment in the flowing process of the sizing material is realized by adjusting the relative position of the auxiliary device of mechanical vibration and the machine head through the movable support with the roller and adjusting the moving stroke of the push rod in the vibration cavity. The vibration flow of the rubber material under different vibration parameters is realized through different amplitude and frequency changes, and the purposes of changing the rubber material fluidity and reducing the flow resistance are achieved.
Claims (1)
1. A plastic mechanical vibration extrusion machine head device comprises an extrusion part and an auxiliary device for realizing mechanical vibration, wherein the two parts are horizontally arranged, and the plastic mechanical vibration extrusion machine head device is characterized in that a cam shaft rotates under the drive of an alternating current servo motor, a push rod is in contact with a groove part of a cam, the push rod moves back and forth, the initial position of the cam is different, the reciprocating motion state of the push rod is also different, the auxiliary device for realizing mechanical vibration comprises the alternating current servo motor (1), an elastic pin coupling (2), a sliding bearing (3), the cam shaft (4) and the push rod (5), the alternating current servo motor (1) and the cam shaft (4) are connected through the elastic pin coupling (2), the cam is provided with a groove, the cam and the push rod (5) are assembled through interference fit, the cam shaft (4) and the sliding bearing (3) are in clearance fit, the push rod (5) is inserted into a vibration cavity of, the extrusion part mainly comprises a filter plate (16), a machine head body (11), a mouth mold body (6), a shunt cone (15), a shunt cone support (14), a shunt core body (13), a vibration cavity (12), a mouth mold (10) and a mouth mold gland (9), wherein the machine head body (11) is connected with the mouth mold body (6) in a threaded fit manner, the mouth mold gland (9) is connected and fixed on the mouth mold body (6) through an inner hexagonal cylinder head screw (8), the shunt cone (15) and the shunt cone support (14) adopt a welding structure, the shunt cone (15) and the shunt core body (13) are connected through threads, the shunt cone support (14) is in an interference fit manner with the machine head body (11) and the vibration cavity (12) are in an interference fit manner, the mouth mold (10) is connected with the mouth mold body (6) through a bolt (7), and reasonable cooling loops such as a baffle plate, a drilling hole and the like can be arranged in the, the temperature of a machine head body is controlled to meet the extrusion requirement, a typical groove cam structure is selected for a cam, the shape is an eccentric circle, the number of the groove cams is not limited to 3, and can be 3-5, the cam and a cam shaft (4) can adopt a welding or integral casting structure, a machine head and an extruder are connected through flanges, the size of a connecting hole of a machine head flange is consistent with that of a connecting hole of a machine barrel flange of the extruder, the flanges are fixed on the machine head body and the machine barrel through welding connection, the two flanges are fastened through bolts, all the connecting bolts are uniformly distributed in the circumferential direction, the coaxiality of the connection between the machine head and the extruder is ensured, an auxiliary device for realizing mechanical vibration is fixed on a movable support (17) with a roller, the roller has a self-locking function, the depth of a push rod inserted into a vibration cavity can be adjusted by controlling the movable, the adjusting range is 0-30 mm, through the adjustment to the frequency of alternating current servo motor (1), can realize the adjustment to the frequency of push rod (5) reciprocating motion vibration frequency, its adjusting range is 0-4.17 HZ, the length of vibration chamber (12) should satisfy the length that can hold 3-6 push rods (5), the hookup location of vibration chamber (12) and push rod (5) sets up the bush, bush outer face of cylinder and vibration chamber (12) inner wall interference fit, bush hole and push rod (5) clearance fit, select the clearance volume according to melt viscosity to be 0.03-0.08 mm, the optional 0.05-0.08 mm clearance volume of high viscosity fuse-element, the optional 0.03-0.05 mm clearance volume of low viscosity fuse-element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731042.0U CN210415439U (en) | 2019-05-21 | 2019-05-21 | Plastic mechanical vibration extruder head device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920731042.0U CN210415439U (en) | 2019-05-21 | 2019-05-21 | Plastic mechanical vibration extruder head device |
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| Publication Number | Publication Date |
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| CN210415439U true CN210415439U (en) | 2020-04-28 |
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| CN201920731042.0U Expired - Fee Related CN210415439U (en) | 2019-05-21 | 2019-05-21 | Plastic mechanical vibration extruder head device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195058A (en) * | 2022-07-22 | 2022-10-18 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
| CN115230118A (en) * | 2022-09-26 | 2022-10-25 | 广东联塑科技实业有限公司 | Wear-resistant and corrosion-resistant mold device capable of strengthening melt plasticization in mold |
-
2019
- 2019-05-21 CN CN201920731042.0U patent/CN210415439U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195058A (en) * | 2022-07-22 | 2022-10-18 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
| CN115195058B (en) * | 2022-07-22 | 2023-10-20 | 广东轻工职业技术学院 | High-speed crankshaft vibration injection molding device |
| CN115230118A (en) * | 2022-09-26 | 2022-10-25 | 广东联塑科技实业有限公司 | Wear-resistant and corrosion-resistant mold device capable of strengthening melt plasticization in mold |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210521 |
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| CF01 | Termination of patent right due to non-payment of annual fee |