CN112976467A - Reciprocating screw injection molding machine and screw adjusting method thereof - Google Patents
Reciprocating screw injection molding machine and screw adjusting method thereof Download PDFInfo
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- CN112976467A CN112976467A CN202110168414.5A CN202110168414A CN112976467A CN 112976467 A CN112976467 A CN 112976467A CN 202110168414 A CN202110168414 A CN 202110168414A CN 112976467 A CN112976467 A CN 112976467A
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- injection molding
- chute
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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
- B29C45/03—Injection moulding apparatus
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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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a reciprocating screw injection molding machine and an adjusting method of a screw thereof, and the reciprocating screw injection molding machine comprises a base, wherein one end of the base is provided with a mold, the other end of the base is provided with a hydraulic motor, the output end of the hydraulic motor is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is provided with a screw body, the base is provided with an injection molding barrel, the screw body is positioned in the injection molding barrel, the outside of the injection molding barrel is provided with a heating device, one end of the injection molding barrel is close to the hydraulic cylinder, the other end of the injection molding barrel is far away from the hydraulic cylinder, one end of the injection molding barrel close to the hydraulic cylinder is provided with a hopper, the hopper is communicated with the inside of the injection molding barrel, the other end of the injection molding barrel is provided with a nozzle corresponding to the mold. The invention has the beneficial effects that: the length of the screw rod is matched, the screw rods with different lengths do not need to be additionally equipped, and the manufacturing cost of an enterprise is reduced.
Description
Technical Field
The invention relates to the technical field of injection molding machines, in particular to a reciprocating screw injection molding machine and a screw adjusting method thereof.
Background
An injection molding machine is also known as an injection molding machine or an injection machine. It is a main forming equipment for making various shaped plastic products from thermoplastic plastics or thermosetting plastics by using plastic forming mould. The device is divided into a vertical type, a horizontal type and a full-electric type. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity.
The screw is one of the core components of the injection molding machine, and mainly functions to convert solid plastic particles or powder into stable and uniform plastic melt through rotation of the screw, and the stable and uniform plastic melt is output to a mold and auxiliary equipment to produce a product meeting the requirements. Different injection molding machines or different products need different technological requirements, and products meeting the requirements can be designed by equipping screws of different types, so that the manufacturing cost of enterprises is greatly increased.
Disclosure of Invention
The invention provides a reciprocating screw injection molding machine capable of reducing the manufacturing cost of enterprises and a screw adjusting method thereof, aiming at overcoming the defect that the manufacturing cost of enterprises is increased in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a reciprocating screw injection molding machine and an adjusting method of a screw thereof comprise a base, wherein one end of the base is provided with a mold, the other end of the base is provided with a hydraulic motor, the output end of the hydraulic motor is provided with a hydraulic cylinder, the output end of the hydraulic cylinder is provided with a screw body, the base is provided with an injection molding cylinder, the screw body is positioned in the injection molding cylinder, a heating device is arranged outside the injection cylinder, one end of the injection cylinder is close to the hydraulic cylinder, the other end of the injection cylinder is far away from the hydraulic cylinder, one end of the injection molding cylinder, which is close to the hydraulic cylinder, is provided with a hopper, the hopper is communicated with the inside of the injection molding cylinder, the other end of the injection cylinder is provided with a nozzle corresponding to the mould, one end of the screw rod body is connected with the output end of the hydraulic cylinder, the other end of the screw body is provided with an adjusting torsion ring, and the screw body is telescopically connected with a glue passing head corresponding to the nozzle through the adjusting torsion ring.
The one end of base is equipped with the mould, the other end of base is equipped with hydraulic motor, be equipped with the pneumatic cylinder on hydraulic motor's the output, be equipped with the screw rod body on the output of pneumatic cylinder, be equipped with the section of thick bamboo of moulding plastics on the base, the screw rod body is located the section of thick bamboo of moulding plastics, the section of thick bamboo of moulding plastics is equipped with heating device outward, the one end of the section of thick bamboo of moulding plastics is close to the pneumatic cylinder, the pneumatic cylinder is kept away from to the other end of the section of thick bamboo of moulding plastics, the one end that the section of thick bamboo of moulding plastics is close to the pneumatic cylinder is equipped with the hopper, the hopper is linked together with the inside of the section of thick bamboo of moulding plastics, the other end of the section of thick bamboo of moulding plastics. An operator adds solid plastic particles or powder into the hopper, heats and melts the solid plastic particles or powder through the heating device, and the screw body is stirred under the action of the hydraulic cylinder and the hydraulic motor to inject the melted material into a mold from a nozzle to realize injection molding operation; before this, the operator needs the process demand according to the model of injection molding machine or product, and the displacement volume of gluing the head is adjusted through adjusting the torque ring to the one end of screw rod body to this length that realizes the screw rod matches, need not additionally to be equipped with the screw rod of different length, has reached the purpose that reduces enterprise manufacturing cost.
Preferably, the adjusting torsion ring comprises a torsion ring body, both ends of the torsion ring body are provided with a first limiting ring, the first limiting ring is fixedly connected with the inner side wall of the torsion ring body, the inner side wall of the torsion ring body is provided with a connecting block, the connecting block is positioned at the central position of the torsion ring body, one end of the connecting block is fixedly connected with the inner side wall of the torsion ring body, the other end of the connecting block is provided with two guide posts, the two guide posts are symmetrically distributed in a left-right manner by taking the connecting block as the center, one end of the rubber head is corresponding to the position of the nozzle, the side wall of the other end of the rubber head is provided with a first limiting chute matched with the first limiting ring on one end of the torsion ring body, the side wall of the screw body is provided with a second limiting chute matched with the first limiting ring on the other end of the torsion ring body, and the other end of the rubber head, one of them guide post contacts with the bottom edge of direction chute one, the other end of screw rod body is equipped with the direction chute two that contacts with another guide post, and the bottom edge of another guide post and direction chute two contacts, mirror image distribution about direction chute one uses the connecting block to be as the center with direction chute two, the bottom center of direction chute one is equipped with the elastic axis, cross the head of gluing and be connected through the bottom center of elastic axis through connection piece and direction chute two, be equipped with the locking piece on the twist ring body. Two ends of the torsion ring body are respectively matched with the first limiting sliding groove and the second limiting sliding groove through the first limiting ring, so that the rubber head can be adjusted within a certain moving range, and the stability of the structure is improved; when the operator rotates the torque ring body, under the tightening up effect of elastic shaft for one of them guide post contacts with the bottom edge of direction chute one all the time, and another guide post contacts with the bottom edge of direction chute two all the time, through the difference in height on the inclined plane of direction chute one bottom and the difference in height on the inclined plane of direction chute two bottoms, realizes crossing the flexible of gluing the head, and through the locking piece locking, thereby realizes the length adjustment of screw rod, reasonable in design.
As preferred, the both ends of twist ring body all are equipped with the transition inclined plane, the transition inclined plane is located the lateral wall of twist ring body, the one end of twist ring body contacts through corresponding transition inclined plane and the lateral wall of crossing gluey head, the other end of twist ring body contacts through the lateral wall of corresponding transition inclined plane and screw rod body, forms crowded gluey screw way between screw rod body and the section of thick bamboo inside wall of moulding plastics, and the design on transition inclined plane is favorable to reducing the resistance when the colloid in crowded gluey screw way flows, the twist ring body covers spacing spout one completely, the twist ring body covers spacing spout two completely for spacing spout one and spacing spout two are kept apart with the colloid, prevent that the colloid from piling up in spacing spout one and spacing spout two, can't be extruded and solidify in the crowded gluey screw way, in order to guarantee to cross gluey head and can normally adjust.
As preferred, be equipped with a plurality of and two corresponding racks one in position of direction chute on the lateral wall of screw rod body, a plurality of rack is one along the circumference evenly distributed of screw rod body, the lock piece includes the locking piece, the one end of locking piece and the surface phase-match of twist ring body, be equipped with on the twist ring body with locking piece assorted locking hole, be equipped with on the lateral wall in locking hole with locking piece assorted setting element, the other end of locking piece is equipped with a plurality of and rack two that meshes mutually. When crossing gluey head and adjusting a certain position, insert the locking piece from locking hole department for the second and rack meshing of rack, the locking piece obtains the location through the setting element, thereby can prevent that the torque ring body from rotating, meanwhile, crosses and tighten up through the elastic shaft between gluey head and the screw rod body, can prevent to cross the offset that produces length direction between gluey head and the screw rod body, improves when moulding plastics the screw rod body and crosses the structural stability between the gluey head.
Preferably, one side of the bottom of the first guide chute is close to the connecting block, the other side, corresponding to the bottom of the first guide chute, is far away from the connecting block, a first height difference is formed between one side of the bottom of the first guide chute and the other side, corresponding to the first guide chute, and one side of the bottom of the second guide chute is close to the connecting block, the other side, corresponding to the bottom of the second guide chute, is far away from the connecting block, a second height difference is formed between one side of the bottom of the second guide chute and the other side, corresponding to the second guide chute, and the length of the first rack is. The design is favorable to crossing gluey first regulation back like this, and when the locking piece inserted the locking downthehole, rack two can mesh mutually with rack one all the time, prevents effectively that the twist ring body from rotating.
As preferred, the shape of locking piece is the cuboid, all be equipped with T type groove on the left and right sides wall in locking hole, the setting element includes spring steel sheet, spring steel sheet's both ends all are located T type inslot, spring steel sheet's mid portion is the U type, be equipped with the recess that matches with spring steel sheet's mid portion on the locking piece, spring steel sheet's mid portion runs through the open end in T type groove and is located the recess. The locking piece is the cuboid for the locking hole also is the cuboid, so two T type grooves are located two short edges or two long edges in locking hole respectively, thereby be convenient for the recess on the locking piece can with the spring steel sheet phase-match in corresponding T type groove, convenient operation.
Preferably, the elastic shaft comprises a first shaft rod and a second shaft rod, one end of the first shaft rod is fixedly connected with the center of the bottom of the first guide chute, the other end of the first shaft rod is provided with a movable chute, the open end of the movable chute is provided with a second limit ring matched with the second shaft rod, one end of the second shaft rod is fixedly connected with the center of the bottom of the second guide chute, the other end of the second shaft rod is provided with a U-shaped groove and is located in the movable chute, the second shaft rod is slidably connected with the first shaft rod through the movable chute, the open end of the U-shaped groove is provided with a third limit ring matched with the movable chute, a tightening spring is arranged in the movable chute, one end of the tightening spring is connected with the bottom of the movable chute, and the other end of. The design ensures the concentricity between the rubber head and the screw body; the tightening spring tightens the rubber head and the screw body, the strength of the tightening spring is greater than the friction force between the rubber head or the screw body when the rubber flows in the rubber extruding spiral channel, and the rubber head and the screw body are prevented from generating position deviation in the length direction; meanwhile, the tightening spring is positioned in the movable sliding groove and the U-shaped groove, so that the tightening spring can be prevented from being twisted and deformed, and the service life of the tightening spring is prolonged.
Preferably, the connecting block is provided with a through hole, the diameter of the through hole is larger than that of the first shaft rod, and the other end of the first shaft rod is located in the through hole and is in sliding connection with the second shaft rod through the movable sliding groove. The design ensures that when an operator rotates the torsion ring body, the interference on the first shaft lever and the second shaft lever is avoided.
Preferably, one end of the guide post is fixedly connected with the connecting block, and the other end of the guide post is hemispherical. The design is favorable to protecting the bottom of first guide chute and the bottom of second guide chute, prevents it by the fish tail, has reduced the area of contact rather than the guide post simultaneously to reduce frictional force, the operator of being convenient for rotates the torque ring body.
The invention also provides an adjusting method of the screw on the reciprocating screw injection molding machine, which comprises the following steps:
firstly, according to process requirements, an operator rotates a torsion ring body, the torsion ring body drives guide posts to rotate simultaneously, one guide post acts on the bottom edge of a first guide chute all the time and the other guide post acts on the bottom edge of a second guide chute all the time under the action of a tightening spring, and a glue passing head and a screw rod body generate relative movement; therefore, the length matching of the screw rods is realized, the screw rods with different lengths do not need to be additionally arranged, and the aim of reducing the manufacturing cost of enterprises is fulfilled;
and step two, when the gluing head is adjusted to a proper position, an operator inserts the locking block to enable the first rack to be meshed with the second rack, meanwhile, the spring steel sheet is clamped into the groove to enable the locking block to be positioned, the torsion ring body is prevented from rotating, meanwhile, the gluing head and the screw rod body are tightened through the elastic shaft, the position deviation in the length direction between the gluing head and the screw rod body can be prevented, and the structural stability between the screw rod body and the gluing head during injection molding is improved.
The invention has the beneficial effects that: the length of the screw is matched, screws with different lengths do not need to be additionally arranged, and the aim of reducing the manufacturing cost of enterprises is fulfilled; the normal adjustment of the gluing head is ensured; after the adjustment is finished, the locking block can prevent the torsion ring body from rotating, and meanwhile, the rubber passing head and the screw rod body are tightened through the elastic shaft, so that the position deviation in the length direction between the rubber passing head and the screw rod body can be prevented, and the structural stability between the screw rod body and the rubber passing head during injection molding is improved; the operation is convenient; prevent the tightening spring from generating torsion and deformation, and prolong the service life of the tightening spring.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connection structure of a screw body and a glue passing head;
FIG. 3 is a schematic view of the screw when extended;
FIG. 4 is an enlarged view of the structure at A in FIG. 3;
FIG. 5 is an enlarged view of the structure at B in FIG. 2;
FIG. 6 is a schematic view of the latch block shown disengaged from the spring steel plate;
fig. 7 is an enlarged view of the structure at C in fig. 4.
In the figure: 1. the injection molding machine comprises a base, 2 parts of a mold, 3 parts of a hydraulic motor, 4 parts of a hydraulic cylinder, 5 parts of a screw rod body, 6 parts of an injection molding cylinder, 7 parts of a heating device, 8 parts of a hopper, 9 parts of a nozzle, 10 parts of an adjusting torsion ring, 11 parts of a rubber head, 12 parts of a torsion ring body, 13 parts of a first limiting ring, 14 parts of a connecting block, 15 parts of a guide column, 16 parts of a first limiting sliding groove, 17 parts of a second limiting sliding groove, 18 parts of a first guiding sliding groove, 19 parts of a second guiding sliding groove, 20 parts of an elastic shaft, 21 parts of a locking piece, 22 parts of a transition inclined surface, 23 parts of a first rack, 24 parts of a locking block, 25 parts of a locking hole, 26 parts of a second rack, 27 parts of a T-shaped groove, 28 parts of a spring, 29 parts of a steel sheet, 30 parts of a first shaft rod, 31 parts of, 36. and (7) tightening the spring, and 37. a through hole.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a reciprocating screw injection molding machine comprises a base 1, one end of the base 1 is provided with a mold 2, the other end of the base 1 is provided with a hydraulic motor 3, an output end of the hydraulic motor 3 is provided with a hydraulic cylinder 4, an output end of the hydraulic cylinder 4 is provided with a screw body 5, the base 1 is provided with an injection molding cylinder 6, the screw body 5 is located in the injection molding cylinder 6, the injection molding cylinder 6 is externally provided with a heating device 7, one end of the injection molding cylinder 6 is close to the hydraulic cylinder 4, the other end of the injection molding cylinder 6 is far away from the hydraulic cylinder 4, one end of the injection molding cylinder 6 close to the hydraulic cylinder 4 is provided with a hopper 8, the hopper 8 is communicated with the inside of the injection molding cylinder 6, the other end of the injection molding cylinder 6 is provided with a nozzle 9 corresponding to the mold 2, one end of the screw body 5 is connected with the output end of the hydraulic.
As shown in fig. 2, 3 and 4, the adjusting torsion ring 10 includes a torsion ring body 12, two ends of the torsion ring body 12 are respectively provided with a first limiting ring 13, the first limiting ring 13 is fixedly connected with an inner side wall of the torsion ring body 12, a connecting block 14 is arranged on the inner side wall of the torsion ring body 12, the connecting block 14 is located at a central position of the torsion ring body 12, one end of the connecting block 14 is fixedly connected with the inner side wall of the torsion ring body 12, the other end of the connecting block 14 is provided with two guide posts 15, the two guide posts 15 are symmetrically distributed with the connecting block 14 as a center, one end of the glue passing head 11 corresponds to a position of the nozzle 9, a first limiting sliding groove 16 matched with the first limiting ring 13 on one end of the torsion ring body 12 is arranged on a side wall of the glue passing head 11, a second limiting sliding groove 17 matched with the first limiting ring 13 on the other end of the torsion ring body 12 is arranged on a side wall of the screw body 5, a first guiding chute 18, one of them guide post 15 contacts with the bottom edge of first guide chute 18, the other end of screw rod body 5 is equipped with the second 19 guide chute that contacts with another guide post 15, the bottom edge of another guide post 15 and second 19 guide chute contacts, mirror image distribution about first 18 guide chute and second 19 guide chute use connecting block 14 to be the center, the bottom center of first 18 guide chute is equipped with elastic shaft 20, cross gluey head 11 and run through the bottom center of connecting block 14 with second 19 guide chute through elastic shaft 20 and be connected, be equipped with locking piece 21 on the twist ring body 12.
As shown in fig. 4, both ends of the torsion ring body 12 are provided with transition slopes 22, the transition slopes 22 are located on the outer side wall of the torsion ring body 12, one end of the torsion ring body 12 is in contact with the side wall of the glue head 11 through the corresponding transition slopes 22, the other end of the torsion ring body 12 is in contact with the side wall of the screw body 5 through the corresponding transition slopes 22, the torsion ring body 12 completely covers the first limiting sliding groove 16, and the torsion ring body 12 completely covers the second limiting sliding groove 17.
As shown in fig. 4, 5 and 6, a plurality of first racks 23 corresponding to the second guide chute 19 are arranged on the side wall of the screw body 5, the plurality of first racks 23 are uniformly distributed along the circumferential direction of the screw body 5, the locking piece 21 includes a locking block 24, one end of the locking block 24 is matched with the outer surface of the torsion ring body 12, a locking hole 25 matched with the locking block 24 is arranged on the torsion ring body 12, a positioning piece matched with the locking block 24 is arranged on the side wall of the locking hole 25, and a plurality of second racks 26 meshed with the first racks 23 are arranged at the other end of the locking block 24.
As shown in fig. 4, one side of the bottom of the first guide chute 18 is close to the connecting block 14, the other side, corresponding to the bottom of the first guide chute 18, is far away from the connecting block 14, a first height difference is formed between one side of the bottom of the first guide chute 18 and the other side, corresponding to the bottom of the second guide chute 19, is close to the connecting block 14, a second height difference is formed between one side of the bottom of the second guide chute 19 and the other side, corresponding to the first height difference, and the length of the first rack 23 is greater than or equal to.
As shown in fig. 5 and 6, the locking block 24 is a rectangular parallelepiped, T-shaped grooves 27 are formed in the left and right side walls of the locking hole 25, the positioning element includes spring steel plates 28, the two ends of each spring steel plate 28 are located in the T-shaped grooves 27, the middle portions of the spring steel plates 28 are U-shaped, grooves 29 matched with the middle portions of the spring steel plates 28 are formed in the locking block 24, and the middle portions of the spring steel plates 28 penetrate through the open ends of the T-shaped grooves 27 and are located in the grooves 29.
As shown in fig. 4 and 7, the elastic shaft 20 includes a first shaft rod 30 and a second shaft rod 31, one end of the first shaft rod 30 is fixedly connected to the center of the bottom of the first guide chute 18, the other end of the first shaft rod 30 is provided with a movable chute 32, an open end of the movable chute 32 is provided with a second limit ring 33 matched with the second shaft rod 31, one end of the second shaft rod 31 is fixedly connected to the center of the bottom of the second guide chute 19, the other end of the second shaft rod 31 is provided with a U-shaped groove 34 and located in the movable chute 32, the second shaft rod 31 is slidably connected to the first shaft rod 30 through the movable chute 32, an open end of the U-shaped groove 34 is provided with a third limit ring 35 matched with the movable chute 32, a tightening spring 36 is arranged in the movable chute 32, one end of the tightening spring 36 is connected to the bottom of.
As shown in fig. 4 and 7, the connecting block 14 is provided with a through hole 37, the diameter of the through hole 37 is larger than that of the first shaft 30, and the other end of the first shaft 30 is located in the through hole 37 and is slidably connected with the second shaft 31 through the moving chute 32.
As shown in fig. 4, one end of the guide post 15 is fixedly connected to the connecting block 14, and the other end of the guide post 15 is shaped like a hemisphere.
The invention also provides an adjusting method of the screw on the reciprocating screw injection molding machine, which comprises the following steps:
firstly, according to the process requirements, an operator rotates the torsion ring body 12, the torsion ring body 12 drives the guide posts 15 to rotate simultaneously, one guide post 15 acts on the bottom edge of the first guide chute 18 all the time, the other guide post 15 acts on the bottom edge of the second guide chute 19 all the time under the action of the tightening spring 36, and the gluing head 11 and the screw rod body 5 move relatively;
step two, when the gluing head 11 is adjusted to a proper position, an operator inserts the locking block 24, so that the first rack 23 is meshed with the second rack 26, and meanwhile, the spring steel sheet 28 is clamped in the groove 29, so that the locking block 24 is positioned.
An operator adds solid plastic particles or powder into the hopper 8 and heats and melts the solid plastic particles or powder through the heating device 7, the screw body 5 is stirred under the action of the hydraulic cylinder 4 and the hydraulic motor 3, and the melted material is injected into the mold 2 from the nozzle 9 to realize injection molding operation; before this, the operator needs the process demand according to the model of injection molding machine or product, and the displacement volume of gluing head 11 is adjusted through adjusting the change ring 10 to the one end of screw rod body 5 to this realizes the length matching of screw rod, need not additionally to be equipped with the screw rod of different length, reduces enterprise manufacturing cost.
When an operator rotates the torsion ring body 12, under the tightening action of the elastic shaft 20, one of the guide posts 15 is always in contact with the bottom edge of the first guide chute 18, the other guide post 15 is always in contact with the bottom edge of the second guide chute 19, and the stretching of the gluing head 11 is realized through the height difference of the bottom inclined plane of the first guide chute 18 and the height difference of the bottom inclined plane of the second guide chute 19; when crossing gluey head 11 and adjusting to a certain position, insert locking piece 24 from locking hole 25 for rack two 26 and rack 23 mesh, locking piece 24 passes through spring steel piece 28 location, thereby can prevent to turn round ring body 12 and rotate, and meanwhile, cross and tighten up through elastic shaft 20 between gluey head 11 and the screw rod body 5, can prevent to cross and produce length direction's displacement between gluey head 11 and the screw rod body 5, improve the screw rod body 5 and cross the structural stability between gluey head 11 when moulding plastics.
Claims (10)
1. A reciprocating screw injection molding machine is characterized by comprising a base (1), wherein one end of the base (1) is provided with a mold (2), the other end of the base (1) is provided with a hydraulic motor (3), the output end of the hydraulic motor (3) is provided with a hydraulic cylinder (4), the output end of the hydraulic cylinder (4) is provided with a screw body (5), the base (1) is provided with an injection molding cylinder (6), the screw body (5) is positioned in the injection molding cylinder (6), the outside of the injection molding cylinder (6) is provided with a heating device (7), one end of the injection molding cylinder (6) is close to the hydraulic cylinder (4), the other end of the injection molding cylinder (6) is far away from the hydraulic cylinder (4), one end of the injection molding cylinder (6) close to the hydraulic cylinder (4) is provided with a hopper (8), the hopper (8) is communicated with the inside of the injection molding cylinder (6), the other end of the injection molding cylinder (6), the one end of screw rod body (5) is connected with the output of pneumatic cylinder (4), the other end of screw rod body (5) is equipped with adjusts torque ring (10), screw rod body (5) are through adjusting torque ring (10) telescopic connection have with nozzle (9) corresponding cross glue head (11).
2. The reciprocating screw injection molding machine as claimed in claim 1, wherein the adjusting torsion ring (10) includes a torsion ring body (12), both ends of the torsion ring body (12) are provided with a first limit ring (13), the first limit ring (13) is fixedly connected with the inner side wall of the torsion ring body (12), the inner side wall of the torsion ring body (12) is provided with a connecting block (14), the connecting block (14) is located at the central position of the torsion ring body (12), one end of the connecting block (14) is fixedly connected with the inner side wall of the torsion ring body (12), the other end of the connecting block (14) is provided with two guide posts (15), the two guide posts (15) are bilaterally symmetrically distributed by taking the connecting block (14) as the center, one end of the over-gluing head (11) corresponds to the position of the nozzle (9), and a first limit chute matched with the first limit ring (13) at one end of the torsion ring body (12) is arranged on the other end of the over-gluing head (11) (16) The utility model discloses a screw rod, be equipped with on the lateral wall of screw rod body (5) with the spacing ring one (13) assorted spacing spout two (17) on the torsion ring body (12) other end, the other end of crossing gluey head (11) is equipped with the direction chute one (18) that contacts with one of them guide post (15), and one of them guide post (15) contacts with the bottom edge of direction chute one (18), the other end of screw rod body (5) is equipped with the direction chute two (19) that contact with another guide post (15), and another guide post (15) contacts with the bottom edge of direction chute two (19), mirror image distribution about being with connecting block (14) is the center is guided chute two (18) to direction chute one (18), cross gluey head (11) and run through the bottom center connection of connecting block (14) and direction chute two (19) through elastic shaft (20), the torsion ring body (12) is provided with a locking piece (21).
3. The reciprocating screw injection molding machine according to claim 2, wherein both ends of the torsion ring body (12) are provided with transition slopes (22), the transition slopes (22) are located on the outer side wall of the torsion ring body (12), one end of the torsion ring body (12) is in contact with the side wall of the glue passing head (11) through the corresponding transition slopes (22), the other end of the torsion ring body (12) is in contact with the side wall of the screw body (5) through the corresponding transition slopes (22), the torsion ring body (12) completely covers the first limiting chute (16), and the torsion ring body (12) completely covers the second limiting chute (17).
4. The reciprocating screw injection molding machine as claimed in claim 2, wherein a plurality of first racks (23) corresponding to the positions of the second guide chutes (19) are arranged on the side wall of the screw body (5), the plurality of first racks (23) are uniformly distributed along the circumferential direction of the screw body (5), the locking member (21) comprises a locking block (24), one end of the locking block (24) is matched with the outer surface of the torsion ring body (12), a locking hole (25) matched with the locking block (24) is arranged on the torsion ring body (12), a positioning member matched with the locking block (24) is arranged on the side wall of the locking hole (25), and a plurality of second racks (26) meshed with the first racks (23) are arranged at the other end of the locking block (24).
5. The reciprocating screw injection molding machine as claimed in claim 4, wherein one side of the bottom of the first guide chute (18) is close to the connecting block (14), the other side of the bottom of the first guide chute (18) is far from the connecting block (14), one side of the bottom of the first guide chute (18) and the other side thereof form a first height difference, one side of the bottom of the second guide chute (19) is close to the connecting block (14), the other side of the bottom of the second guide chute (19) and the other side thereof form a second height difference, and the length of the first rack (23) is equal to or greater than the sum of the first height difference and the second height difference.
6. The reciprocating screw injection molding machine according to claim 4, characterized in that the locking block (24) is shaped as a rectangular parallelepiped, the left and right side walls of the locking hole (25) are both provided with T-shaped grooves (27), the positioning member comprises a spring steel sheet (28), both ends of the spring steel sheet (28) are both located in the T-shaped grooves (27), the middle part of the spring steel sheet (28) is U-shaped, the locking block (24) is provided with a groove (29) matched with the middle part of the spring steel sheet (28), and the middle part of the spring steel sheet (28) penetrates through the opening end of the T-shaped groove (27) and is located in the groove (29).
7. The reciprocating screw injection molding machine as claimed in claim 2, wherein the elastic shaft (20) comprises a first shaft rod (30) and a second shaft rod (31), one end of the first shaft rod (30) is fixedly connected with the bottom center of the first guide chute (18), the other end of the first shaft rod (30) is provided with a moving chute (32), the open end of the moving chute (32) is provided with a second limit ring (33) matched with the second shaft rod (31), one end of the second shaft rod (31) is fixedly connected with the bottom center of the second guide chute (19), the other end of the second shaft rod (31) is provided with a U-shaped groove (34) and is positioned in the moving chute (32), the second shaft rod (31) is slidably connected with the first shaft rod (30) through the moving chute (32), the open end of the U-shaped groove (34) is provided with a third limit ring (35) matched with the moving chute (32), a tightening spring (36) is arranged in the movable sliding groove (32), one end of the tightening spring (36) is connected with the bottom of the movable sliding groove (32), and the other end of the tightening spring (36) is connected with the bottom of the U-shaped groove (34).
8. The reciprocating screw injection molding machine as claimed in claim 7, wherein said connecting block (14) is provided with a through hole (37), said through hole (37) has a diameter larger than that of the first shaft (30), and the other end of the first shaft (30) is located in the through hole (37) and slidably connected with the second shaft (31) through the moving chute (32).
9. The reciprocating screw injection molding machine as claimed in claim 2, wherein one end of said guide post (15) is fixedly connected to the connecting block (14), and the other end of said guide post (15) is formed in a hemispherical shape.
10. A method for adjusting a screw on a reciprocating screw injection molding machine is characterized by comprising the following steps:
firstly, according to process requirements, an operator rotates a torsion ring body (12), the torsion ring body (12) drives guide posts (15) to rotate simultaneously, one guide post (15) acts on the bottom edge of a first guide chute (18) all the time, the other guide post (15) acts on the bottom edge of a second guide chute (19) all the time under the action of a tightening spring (36), and a glue passing head (11) and a screw rod body (5) move relatively;
and step two, when the gluing head (11) is adjusted to a proper position, an operator inserts the locking block (24) to enable the first rack (23) to be meshed with the second rack (26), and meanwhile, the spring steel sheet (28) is clamped into the groove (29) to enable the locking block (24) to be positioned.
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| CN202110168414.5A CN112976467B (en) | 2021-02-07 | 2021-02-07 | Reciprocating screw injection molding machine and screw adjusting method thereof |
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| CN202110168414.5A CN112976467B (en) | 2021-02-07 | 2021-02-07 | Reciprocating screw injection molding machine and screw adjusting method thereof |
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| CN110667060A (en) * | 2019-09-30 | 2020-01-10 | 浙江太湖远大新材料股份有限公司 | Assembled screw rod |
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| JPH1034730A (en) * | 1996-07-24 | 1998-02-10 | Toshiba Mach Co Ltd | Dehydration system for high melting point resin by same direction revolving biaxial extruder |
| CN203344296U (en) * | 2013-07-19 | 2013-12-18 | 山西北方兴安化学工业有限公司 | Lap joint screw rod for screw-type extruder |
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| CN112976467B (en) | 2023-06-13 |
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