CN112976467B - 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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- CN112976467B CN112976467B CN202110168414.5A CN202110168414A CN112976467B CN 112976467 B CN112976467 B CN 112976467B CN 202110168414 A CN202110168414 A CN 202110168414A CN 112976467 B CN112976467 B CN 112976467B
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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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- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a reciprocating screw injection molding machine and a screw adjusting method thereof, the reciprocating screw injection molding machine comprises a base, one end of the base is provided with a die, 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 molding cylinder, one end of the injection molding cylinder is close to the hydraulic cylinder, the other end of the injection molding cylinder is far away from the hydraulic cylinder, one end of the injection molding cylinder is close to the hydraulic cylinder and is communicated with the inside of the injection molding cylinder, the other end of the injection molding cylinder is provided with a nozzle corresponding to the die, one end of the screw 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 connected with a glue passing head corresponding to the nozzle in a telescopic way through the adjusting torsion ring. The beneficial effects of the invention are as follows: the length matching of the screw rod is realized, the screw rods with different lengths are not required to be additionally arranged, and the manufacturing cost of enterprises 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
Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould. The device is divided into vertical type, horizontal type and full-electric type. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and injects the molten plastic to fill the mold cavity.
The screw is one of the core components of the injection molding machine, and has the main function of converting solid plastic particles or powder into stable and uniform plastic melt through rotation of the solid plastic particles or powder, and outputting the plastic melt to a die and auxiliary equipment to produce the product meeting the requirements. Because different injection molding machines or different products need different technological requirements, different types of screws are often required to be equipped to design the products meeting the requirements, and 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 of the increase of the manufacturing cost of enterprises in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a reciprocating screw injection molding machine and adjusting method of screw rod thereof, it includes the base, 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 the output of hydraulic motor, 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 other end of the section of thick bamboo of moulding plastics is kept away from the pneumatic cylinder, 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 moulding plastics is equipped with the nozzle corresponding with the mould, the one end of screw rod body is connected with the output of pneumatic cylinder, the other end of screw rod body is equipped with the regulation twist ring, the screw rod body is through adjusting the telescopic connection with the rubberizing head corresponding with the nozzle.
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, be equipped with heating device outside the section of thick bamboo of moulding plastics, the one end of the section of thick bamboo of moulding plastics is close to the pneumatic cylinder, the other end of the section of thick bamboo of moulding plastics is kept away from the pneumatic cylinder, 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 is equipped with the nozzle corresponding with the mould, the one end of screw rod body is connected with the output of pneumatic cylinder, the other end of screw rod body is equipped with the regulation torsion ring, the screw rod body is through adjusting the flexible glue head that has with the nozzle corresponding. The 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 melted materials into the mold from the nozzle to realize injection molding operation; before that, the operator needs to adjust the displacement of the rubber head through adjusting the torsion ring according to the model of the injection molding machine or the process requirement of the product, so that the length matching of the screw is realized, the screws with different lengths are not required to be additionally arranged, and the aim of reducing the manufacturing cost of enterprises is fulfilled.
Preferably, the adjusting torsion ring comprises a torsion ring body, the two ends of the torsion ring body are respectively provided with a first limit chute matched with the first limit chute on one end of the torsion ring body, the first limit chute is fixedly connected with the inner side wall of the torsion ring body, 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 left and right by taking the connecting block as the center, one end of the glue passing head corresponds to the position of the nozzle, the side wall of the other end of the glue passing head is provided with a second limit chute matched with the first limit chute on the other end of the torsion ring body, the other end of the screw body is provided with a first guide chute contacted with one guide post, the other guide post is contacted with the bottom edge of the first guide chute, the other guide post is contacted with the bottom edge of the second guide chute, the first guide post is provided with a second guide chute is in a mirror image way connected with the second guide shaft, the first guide shaft is arranged at the bottom of the second guide shaft is connected with the second guide shaft, and the first guide chute is elastically connected with the second guide shaft through the first guide shaft. The two ends of the torsion ring body are respectively matched with the first limit chute and the second limit chute through the first limit ring, so that the adhesive passing head can be regulated within a certain movement range, and meanwhile, the stability of the structure is improved; when the operator rotates the torsion ring body, under the tightening effect of the elastic shaft, one guide column is always contacted with the bottom edge of the first guide chute, the other guide column is always contacted with the bottom edge of the second guide chute, the extension and retraction of the rubber head are realized through the height difference of the bottom inclined plane of the first guide chute and the height difference of the bottom inclined plane of the second guide chute, and the locking piece is used for locking, so that the length adjustment of the screw rod is realized, and the design is reasonable.
Preferably, the two ends of the torsion ring body are respectively provided with a transition inclined plane, the transition inclined planes are positioned on the outer side wall of the torsion ring body, one end of the torsion ring body is contacted with the side wall of the glue passing head through the corresponding transition inclined planes, the other end of the torsion ring body is contacted with the side wall of the screw body through the corresponding transition inclined planes, a glue extruding screw channel is formed between the screw body and the inner side wall of the injection molding barrel, the design of the transition inclined planes is favorable for reducing the resistance of glue in the glue extruding screw channel when the glue flows, the torsion ring body completely covers the first limit chute, the torsion ring body completely covers the second limit chute, so that the first limit chute and the second limit chute are isolated from the glue, the glue is prevented from being accumulated in the first limit chute and the second limit chute and being extruded from the glue extruding screw channel to be solidified, and the glue passing head can be regulated normally.
Preferably, a plurality of first racks corresponding to the two positions of the guide chute are arranged on the side wall of the screw body, the first racks are uniformly distributed along the circumferential direction of the screw body, the locking piece comprises a locking block, one end of the locking block is matched with the outer surface of the torsion ring body, a locking hole matched with the locking block is formed in the torsion ring body, a positioning piece matched with the locking block is arranged on the side wall of the locking hole, and a plurality of second racks meshed with the first racks are arranged at the other end of the locking block. When the rubber head is adjusted to a certain position, the locking block is inserted from the locking hole, so that the second rack is meshed with the first rack, the locking block is positioned through the positioning piece, the torsion ring body can be prevented from rotating, meanwhile, the rubber head and the screw body are tightened through the elastic shaft, the rubber head and the screw body can be prevented from being offset in the length direction, and the structural stability between the screw body and the rubber head during injection molding is improved.
Preferably, one side of the bottom of the guiding chute is close to the connecting block, the other corresponding side of the bottom of the guiding chute is far away from the connecting block, one side of the bottom of the guiding chute and the other corresponding side of the bottom of the guiding chute form a first height difference, one side of the bottom of the guiding chute is close to the connecting block, the other corresponding side of the bottom of the guiding chute is far away from the connecting block, one side of the bottom of the guiding chute and the other corresponding side of the guiding chute form a second height difference, and the length of the rack I is greater than or equal to the sum of the first height difference and the second height difference. The design is favorable to passing the gluey head and adjusts the back, and when the locking piece inserted in the locking hole, rack two can mesh with rack one all the time, prevents effectively that the torsion ring body from rotating.
Preferably, the locking block is rectangular, T-shaped grooves are formed in the left side wall and the right side wall of the locking hole, the positioning piece comprises a spring steel sheet, two ends of the spring steel sheet are located in the T-shaped grooves, the middle portion of the spring steel sheet is U-shaped, grooves matched with the middle portion of the spring steel sheet are formed in the locking block, and the middle portion of the spring steel sheet penetrates through the opening ends of the T-shaped grooves and are located in the grooves. The locking piece is the cuboid for the locking hole also is the cuboid, so two T type grooves are located two minor faces or two long edges of locking hole respectively, thereby the recess on the locking piece of being convenient for can with corresponding T type inslot spring steel sheet assorted, 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 moving chute, the opening end of the moving chute is provided with a second limiting 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 positioned in the moving chute, the second shaft rod is in sliding connection with the first shaft rod through the moving chute, the opening end of the U-shaped groove is provided with a third limiting ring matched with the moving chute, a tightening spring is arranged in the moving chute, one end of the tightening spring is connected with the bottom of the moving chute, and the other end of the tightening spring is connected with the bottom of the U-shaped groove. The concentricity between the rubber passing head and the screw body is ensured by the design; the tightening spring tightens up the glue passing head and the screw body, the strength of the tightening spring is larger than the friction force between the glue passing head or the screw body when the glue flows in the glue extruding screw channel, and the glue passing head and the screw body are prevented from generating position deviation in the length direction; meanwhile, the tightening spring is positioned in the movable chute and the U-shaped chute, so that the tightening spring can be prevented from being twisted to deform, 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 lever, and the other end of the first shaft lever is positioned in the through hole and is in sliding connection with the second shaft lever through the moving chute. The design makes the operator not interfere the first shaft lever and the second shaft lever when rotating the torsion ring body.
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 the first guide chute and the bottom of the second guide chute, prevents the first guide chute and the second guide chute from being scratched, and reduces the contact area between the guide column and the guide column, so that friction force is reduced, and an operator can rotate the torsion ring body conveniently.
The invention also provides a method for adjusting the upper screw of the reciprocating screw injection molding machine, which comprises the following steps:
step one, according to the process requirement, an operator rotates a torsion ring body, the torsion ring body drives guide posts to rotate simultaneously, one guide post always acts on the bottom edge of a first guide chute, the other guide post always acts on the bottom edge of a second guide chute, and relative movement is generated between a glue passing head and a screw body; the length of the screw rod is matched, screws with different lengths are not required to be additionally arranged, and the aim of reducing the manufacturing cost of enterprises is fulfilled;
step two, when the gluey head of gluing is adjusted to suitable position department, the operator inserts the locking piece for rack one and rack two-phase meshing, in the spring steel sheet card advanced the recess simultaneously for the locking piece obtains the location, prevents that the torsion ring body from rotating, simultaneously, crosses and tightens up through the elastic axis between gluey head and the screw rod body, can prevent to cross and produce the length direction's between gluey head and the screw rod body positional deviation, improves the structural stability between screw rod body and the gluey head that crosses when moulding plastics.
The beneficial effects of the invention are as follows: the length matching of the screw rods is realized, the screw rods with different lengths are not required to be additionally arranged, and the aim of reducing the manufacturing cost of enterprises is fulfilled; the normal adjustment of the glue passing head is ensured; after the adjustment is finished, the locking block can prevent the torsion ring body from rotating, meanwhile, the glue passing head and the screw rod body are tightened through the elastic shaft, so that the position offset in the length direction between the glue passing head and the screw rod body can be prevented, and the structural stability between the screw rod body and the glue 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 diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a connection structure of a screw body and a glue passing head;
FIG. 3 is a schematic view of the structure of the screw as it is 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 structure of the lock block when it is disengaged from the spring steel plate;
fig. 7 is an enlarged view of the structure at C in fig. 4.
In the figure: 1. base, 2, mold, 3, hydraulic motor, 4, hydraulic cylinder, 5, screw body, 6, injection molding barrel, 7, heating device, 8, hopper, 9, nozzle, 10, adjustment torsion ring, 11, over head, 12, torsion ring body, 13, stop collar, 14, connecting block, 15, guide post, 16, stop runner, 17, stop runner, 18, guide runner, 19, guide runner, 20, resilient shaft, 21, locking element, 22, transition ramp, 23, rack, 24, locking block, 25, locking hole, 26, rack, 27, T-shaped slot, 28, spring steel plate, 29, groove, 30, shaft, 31, shaft, 32, movement groove, 33, stop collar, 34, U-shaped slot, 35, stop collar, 36, tightening spring, 37.
Detailed Description
The invention is further described below with reference to the drawings 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, 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, a heating device 7 is arranged outside the injection molding cylinder 6, 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 cylinder 4, the other end of the screw body 5 is provided with an adjusting torsion ring 10, and the screw body 5 is connected with a glue passing head 11 corresponding to the nozzle 9 through the adjusting torsion ring 10 in a telescopic manner.
As shown in fig. 2, 3 and 4, the adjusting torsion ring 10 comprises 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 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 positioned at the center 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 which are symmetrically distributed left and right by taking the connecting block 14 as the center, one end of the glue passing head 11 corresponds to the position of the nozzle 9, the side wall of the other end of the glue passing head 11 is provided with a first limiting chute 16 which is matched with the first limiting ring 13 on one end of the torsion ring body 12, the side wall of the screw body 5 is provided with a limiting chute II 17 matched with a limiting collar II 13 on the other end of the torsion ring body 12, the other end of the glue passing head 11 is provided with a guiding chute I18 contacted with one guiding column 15, one guiding column 15 is contacted with the bottom edge of the guiding chute I18, the other end of the screw body 5 is provided with a guiding chute II 19 contacted with the other guiding column 15, the other guiding column 15 is contacted with the bottom edge of the guiding chute II 19, the guiding chute I18 and the guiding chute II are distributed in a left-right mirror image mode by taking a connecting block 14 as the center, the bottom center of the guiding chute I18 is provided with an elastic shaft 20, the glue passing head 11 penetrates through the connecting block 14 through the elastic shaft 20 to be connected with the bottom center of the guiding chute II 19, and the torsion ring body 12 is provided with a locking piece 21.
As shown in fig. 4, two ends of the torsion ring body 12 are respectively provided with a transition inclined plane 22, the transition inclined planes 22 are positioned on the outer side wall of the torsion ring body 12, one end of the torsion ring body 12 is contacted with the side wall of the glue passing head 11 through the corresponding transition inclined planes 22, the other end of the torsion ring body 12 is contacted with the side wall of the screw body 5 through the corresponding transition inclined planes 22, the torsion ring body 12 completely covers the first limit chute 16, and the torsion ring body 12 completely covers the second limit chute 17.
As shown in fig. 4, 5 and 6, a plurality of first racks 23 corresponding to the second guiding chute 19 are arranged on the side wall of the screw body 5, the first racks 23 are uniformly distributed along the circumferential direction of the screw body 5, the locking piece 21 comprises a locking piece 24, one end of the locking piece 24 is matched with the outer surface of the torsion ring body 12, a locking hole 25 matched with the locking piece 24 is arranged on the torsion ring body 12, a positioning piece matched with the locking piece 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 piece 24.
As shown in fig. 4, one side of the bottom of the first guiding chute 18 is close to the connecting block 14, the other side corresponding to the bottom of the first guiding chute 18 is far away from the connecting block 14, one side of the bottom of the first guiding chute 18 is close to the connecting block 14, one side corresponding to the bottom of the second guiding chute 19 is close to the connecting block 14, the other side corresponding to the bottom of the second guiding chute 19 is far away from the connecting block 14, one side corresponding to the other side of the bottom of the second guiding chute 19 is high, and the length of the first rack 23 is greater than or equal to the sum of the first height difference and the second height difference.
As shown in fig. 5 and 6, the locking block 24 is rectangular, T-shaped grooves 27 are formed in the left and right side walls of the locking hole 25, the positioning member comprises a spring steel sheet 28, two ends of the spring steel sheet 28 are located in the T-shaped grooves 27, the middle portion of the spring steel sheet 28 is U-shaped, a groove 29 matched with the middle portion of the spring steel sheet 28 is formed in the locking block 24, and the middle portion of the spring steel sheet 28 penetrates through the opening end of the T-shaped groove 27 and is located in the groove 29.
As shown in fig. 4 and 7, the elastic shaft 20 includes a first shaft 30 and a second shaft 31, one end of the first shaft 30 is fixedly connected with the bottom center of the first guiding chute 18, the other end of the first shaft 30 is provided with a moving chute 32, the opening end of the moving chute 32 is provided with a second limiting ring 33 matched with the second shaft 31, one end of the second shaft 31 is fixedly connected with the bottom center of the second guiding chute 19, the other end of the second shaft 31 is provided with a U-shaped groove 34 and is located in the moving chute 32, the second shaft 31 is slidably connected with the first shaft 30 through the moving chute 32, the opening end of the U-shaped groove 34 is provided with a third limiting ring 35 matched with the moving chute 32, a tightening spring 36 is arranged in the moving chute 32, one end of the tightening spring 36 is connected with the bottom of the moving chute 32, and the other end of the tightening spring 36 is connected with the bottom of the U-shaped groove 34.
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 lever 30, and the other end of the first shaft lever 30 is positioned in the through hole 37 and is slidably connected with the second shaft lever 31 through the moving chute 32.
As shown in fig. 4, one end of the guide post 15 is fixedly connected with the connection block 14, and the other end of the guide post 15 is hemispherical.
The invention also provides a method for adjusting the upper screw of the reciprocating screw injection molding machine, which comprises the following steps:
step one, according to the process requirement, 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 always acts on the bottom edge of the first guide chute 18, the other guide post 15 always acts on the bottom edge of the second guide chute 19 under the action of the tightening spring 36, and relative movement is generated between the glue passing head 11 and the screw body 5;
step two, when the adhesive 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 into the groove 29, so that the locking block 24 is positioned.
The operator adds solid plastic particles or powder into the hopper 8, heats and melts the solid plastic particles or powder through the heating device 7, and the screw body 5 is stirred under the action of the hydraulic cylinder 4 and the hydraulic motor 3 to inject melted materials into the die 2 from the nozzle 9 to realize injection molding operation; before that, the operator needs to adjust the displacement of the rubber head 11 through adjusting the torsion ring 10 according to the model of the injection molding machine or the technological requirement of the product, so as to realize the length matching of the screw, and the screws with different lengths are not required to be additionally arranged, thereby reducing the manufacturing cost of enterprises.
When an operator rotates the torsion ring body 12, under the tightening action of the elastic shaft 20, one guide post 15 is always contacted with the bottom edge of the first guide chute 18, the other guide post 15 is always contacted with the bottom edge of the second guide chute 19, and the extension and retraction of the glue passing head 11 are realized through the height difference of the bottom inclined surface of the first guide chute 18 and the height difference of the bottom inclined surface of the second guide chute 19; when the glue head 11 is adjusted to a certain position, the locking block 24 is inserted from the locking hole 25, so that the second rack 26 is meshed with the first rack 23, the locking block 24 is positioned through the spring steel sheet 28, the torsion ring body 12 can be prevented from rotating, meanwhile, the glue head 11 and the screw rod body 5 are tightened through the elastic shaft 20, the position offset in the length direction between the glue head 11 and the screw rod body 5 can be prevented, and the structural stability between the screw rod body 5 and the glue head 11 during injection molding is improved.
Claims (7)
1. The utility model provides a reciprocating screw injection molding machine, its characterized in that, including base (1), the one end of base (1) is equipped with mould (2), the other end of base (1) is equipped with hydraulic motor (3), be equipped with pneumatic cylinder (4) on the output of hydraulic motor (3), be equipped with screw rod body (5) on the output of pneumatic cylinder (4), be equipped with on base (1) and mould plastics section of thick bamboo (6), screw rod body (5) are located and mould plastics section of thick bamboo (6), mould plastics section of thick bamboo (6) are equipped with heating device (7) outward, the one end of moulding plastics section of thick bamboo (6) is close to pneumatic cylinder (4), the other end of moulding plastics section of thick bamboo (6) is kept away from pneumatic cylinder (4), the one end that is close to pneumatic cylinder (4) of moulding plastics section of thick bamboo (6) is equipped with hopper (8), the inside of hopper (8) and moulding plastics section of thick bamboo (6) is linked together, the other end of moulding plastics section of thick bamboo (6) is equipped with nozzle (9) corresponding with mould (2), one end and the output of pneumatic cylinder (4) are connected, the one end of screw rod body (5) is located, one end of moulding plastics section of thick bamboo (5) is connected, one end (5) is equipped with the corresponding nozzle (10) through adjusting screw rod (10), the adjusting torsion ring (10) comprises 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 rings (13) are fixedly connected with the inner side wall of the torsion ring body (12), connecting blocks (14) are arranged on the inner side wall of the torsion ring body (12), the connecting blocks (14) are positioned at the central position of the torsion ring body (12), one end of each connecting block (14) is fixedly connected with the inner side wall of the torsion ring body (12), two guide posts (15) are arranged at the other end of each connecting block (14), the two guide posts (15) are distributed in bilateral symmetry with the connecting blocks (14) as the center, one end of each glue passing head (11) corresponds to the position of a nozzle (9), a first limiting chute (16) matched with the first limiting ring (13) at one end of the torsion ring body (12) is arranged on the side wall of the other end of each glue passing head (11), two guide posts (17) matched with the first limiting rings (13) at the other end of the torsion ring body (12) are arranged on the side wall of each screw body (5), one guide post (18) is contacted with one guide post (18) at the other end of the two guide posts (15), the other end of the screw body (5) is provided with a second guide chute (19) which is contacted with the other guide column (15), the other guide column (15) is contacted with the bottom edge of the second guide chute (19), the first guide chute (18) and the second guide chute (19) are distributed in a left-right mirror image mode by taking the connecting block (14) as the center, the bottom center of the first guide chute (18) is provided with an elastic shaft (20), the rubber passing head (11) penetrates through the connecting block (14) and is connected with the bottom center of the second guide chute (19) through the elastic shaft (20), the torsion ring body (12) is provided with a locking piece (21), the side wall of the screw body (5) is provided with a plurality of first racks (23) which are corresponding to the position of the second guide chute (19), the racks (23) are uniformly distributed along the circumferential direction of the screw body (5), the locking piece (21) comprises a locking piece (24), one end of the locking piece (24) is matched with the outer surface of the torsion ring body (12), the torsion ring body (12) is provided with a locking piece (24) matched with a locking piece (25), the other end of the locking block (24) is provided with a plurality of racks II (26) meshed with the racks I (23).
2. The reciprocating screw injection molding machine according to claim 1, wherein two ends of the torsion ring body (12) are provided with transition inclined planes (22), the transition inclined planes (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 inclined planes (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 inclined planes (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).
3. The reciprocating screw injection molding machine according to claim 1, wherein 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), one side of the bottom of the first guide chute (18) forms a first height difference with the other side corresponding to the first guide chute, one side of the bottom of the second guide chute (19) is close to the connecting block (14), the other side corresponding to the bottom of the second guide chute (19) is far away from the connecting block (14), one side of the bottom of the second guide chute (19) forms a second height difference with the other side corresponding to the second guide chute, and the length of the first rack (23) is greater than or equal to the sum of the first height difference and the second height difference.
4. The reciprocating screw injection molding machine according to claim 1, wherein the locking block (24) is rectangular, T-shaped grooves (27) are formed in the left and right side walls of the locking hole (25), the positioning piece comprises a spring steel sheet (28), two ends of the spring steel sheet (28) are located in the T-shaped grooves (27), the middle part of the spring steel sheet (28) is in a U shape, a groove (29) matched with the middle part of the spring steel sheet (28) is formed in the locking block (24), 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).
5. The reciprocating screw injection molding machine according to claim 1, wherein the elastic shaft (20) comprises a first shaft (30) and a second shaft (31), one end of the first shaft (30) is fixedly connected with the bottom center of the first guiding chute (18), the other end of the first shaft (30) is provided with a third moving chute (32), the opening end of the second moving chute (32) is provided with a second limiting ring (33) matched with the second shaft (31), one end of the second shaft (31) is fixedly connected with the bottom center of the second guiding chute (19), the other end of the second shaft (31) is provided with a U-shaped groove (34) and is located in the second moving chute (32), the second shaft (31) is slidably connected with the first shaft (30) through the moving chute (32), the opening end of the U-shaped groove (34) is provided with a third limiting ring (35) matched with the first moving chute (32), the inside of the moving chute (32) is provided with a tightening spring (36), one end of the spring (36) is connected with the bottom of the second moving chute (32), and the other end of the second shaft (31) is connected with the bottom of the second spring (36).
6. The reciprocating screw injection molding machine according to claim 5, wherein 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 lever (30), and the other end of the first shaft lever (30) is positioned in the through hole (37) and is slidably connected with the second shaft lever (31) through the moving chute (32).
7. A reciprocating screw injection molding machine according to claim 1, wherein one end of the guide post (15) is fixedly connected with the connecting block (14), and the other end of the guide post (15) is hemispherical in shape.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016090294A1 (en) * | 2014-12-04 | 2016-06-09 | Extrude To Fill, LLC | Control system for injection molding |
| CN110667060B (en) * | 2019-09-30 | 2021-04-16 | 浙江太湖远大新材料股份有限公司 | Assembled screw rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104626498A (en) * | 2015-01-09 | 2015-05-20 | 芜湖航天特种电缆厂 | Extruding molding device |
| CN205238485U (en) * | 2015-12-21 | 2016-05-18 | 刘丹 | Exchange formula carbide screw rod |
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Effective date of registration: 20230105 Address after: No. 68, Xixi Road, Jiuxian Street, Tonglu County, Hangzhou, Zhejiang 311599 Applicant after: Hangzhou Jiarunhong Machinery Co.,Ltd. Address before: No. 729, Jiangnan Road, Jiangnan Town, Tonglu County, Hangzhou City, Zhejiang Province Applicant before: Hangzhou lebelung Machinery Manufacturing Co.,Ltd. |
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