CN114889071A - Synchronous brake mechanism of two-plate injection molding machine and use method thereof - Google Patents
Synchronous brake mechanism of two-plate injection molding machine and use method thereof Download PDFInfo
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- CN114889071A CN114889071A CN202210653423.8A CN202210653423A CN114889071A CN 114889071 A CN114889071 A CN 114889071A CN 202210653423 A CN202210653423 A CN 202210653423A CN 114889071 A CN114889071 A CN 114889071A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 31
- 239000003921 oil Substances 0.000 claims description 31
- 230000001050 lubricating effect Effects 0.000 claims description 16
- 210000004907 gland Anatomy 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 208000008010 Tooth Avulsion Diseases 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/68—Mould opening, closing or clamping devices hydro-mechanical
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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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
- B29C45/64—Mould opening, closing or clamping devices
-
- 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
- B29C45/83—Lubricating means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a synchronous brake mechanism of a two-plate injection molding machine and a use method thereof, wherein the synchronous brake mechanism comprises a pressurizing template, a fixed template, a hydraulic thimble system, a quick mould moving system and a rotary oil cylinder system; the four corners of the pressurizing template are connected with the fixed template through tie bars, and the pressurizing template is in sliding connection with the tie bars; four independent pressure maintaining hydraulic cavities are formed in the pressurizing template, a mold locking piston is arranged in each pressure maintaining hydraulic cavity, and the rotary oil cylinder system drives the mold locking piston to rotate to tightly hold or loosen the tie bar; the hydraulic ejector pin system is used for ejecting a product; the quick die moving system is used for driving the pressurizing template to realize die opening/closing. The pressurizing template and the pressure-maintaining cylinder are integrated, and the tie columns and the fixed template are relatively fixed, so that the tie columns do not move in the die assembly process, the tooth dislocation phenomenon caused by the movement of the tie columns is avoided, the die assembly speed does not need to be controlled in the die assembly process, and the die assembly efficiency is improved.
Description
Technical Field
The invention relates to the technical field of injection molding machines, in particular to a synchronous band-type brake mechanism of a two-plate injection molding machine and a using 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. Horizontal injection molding machines are the most common type of injection molding machine. The mold clamping part and the injection part are positioned on the same horizontal center line, and the mold is opened along the horizontal direction.
Compared with a traditional three-plate toggle injection molding machine, the two-plate injection molding machine has the advantages that the mold locking force only acts on two templates of a fixed mold, so that the two-plate injection molding machine has the main advantages that one template is less than that of the toggle type injection molding machine, the total weight of the whole machine is reduced by about 18%, the total length is reduced by about 25%, the mold moving stroke is not limited, the rapid mold moving and high-pressure mold locking actions are separated, the two-plate injection molding machine has the advantages of small occupied area on the same ratio, cost saving, energy saving, uniform stress on a pull rod, flexibility, easiness in control and the like, and the two-plate injection molding machine is more and more concerned by injection molding machine manufacturing enterprises by the superiority as a development direction of a large injection molding machine.
For the existing two-plate injection molding machine, the following defects exist: 1. the contracting brake mechanism and the high-pressure mold locking oil cylinder (oil cylinder for pressure maintaining during injection molding) are of a split structure, the high-pressure mold locking oil cylinder is arranged at the end part of a pull rod at a fixed template (such as a patent with the publication number of CN 209289712U), the slow mold locking speed is ensured during mold closing of the structure, otherwise, the movement of the pull rod (a tie bar) is caused, so that teeth on the pull rod are dislocated with teeth on the contracting brake mechanism, the tooth beating phenomenon occurs during mold locking, and the mold locking cannot be completed; 2. the band-type brake mechanism is only suitable for a mould of a single model, and if the size of the mould changes, teeth on a pull rod (tie bar) and teeth on the band-type brake mechanism can be in tooth alignment when the mould is closed, so that the band-type brake cannot be carried out, and the mould locking cannot be finished.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a synchronous band-type brake mechanism of a two-plate injection molding machine and a using method thereof.
The purpose of the invention is realized by the following technical scheme:
a synchronous brake mechanism of a two-plate injection molding machine comprises a pressurizing template, a fixed template, a hydraulic ejector pin system, a rapid mold moving system and a rotary oil cylinder system;
the four corners of the pressurizing template are connected with the fixed template through tie bars, and the pressurizing template is in sliding connection with the tie bars; four independent pressure maintaining hydraulic cavities are formed in the pressurizing template, a mold locking piston is arranged in each pressure maintaining hydraulic cavity, and the rotary oil cylinder system drives the mold locking piston to rotate to tightly hold or loosen the tie bar;
the hydraulic ejector pin system is used for ejecting a product;
the quick die moving system is used for driving the pressurizing template to realize die opening/closing.
Further, the mold locking piston is coaxially arranged outside the tie bar column, the outer circumferential surface of the mold locking piston is of a step-shaped circular truncated cone structure with the diameter gradually reduced, a cylinder cover is arranged at the end of the pressure maintaining hydraulic cavity, and a sealed first hydraulic cavity is formed among the cylinder cover, the mold locking piston and the pressure maintaining hydraulic cavity;
the end face of the cylinder cover is rotatably provided with a rotary guide disc, a plurality of clamping grooves are uniformly distributed in the inner ring of the rotary guide disc, a plurality of clamping strips matched with the clamping grooves are arranged on the mold locking piston, the rotary guide disc is arranged outside the mold locking piston, and the rotary guide disc is connected with the mold locking piston through the clamping grooves and the clamping strips;
a pair of tooth adjusting cavities are formed among the mold locking piston, the rotary guide disc and the cylinder cover;
and a sealed second hydraulic cavity is formed between one end of the mold locking piston, which is far away from the cylinder cover, and the pressure maintaining hydraulic cavity, and a first hydraulic oil hole and a second hydraulic oil hole which are communicated with the first hydraulic cavity and the second hydraulic cavity respectively are arranged on the pressure maintaining hydraulic cavity.
Furthermore, the rotary oil cylinder system comprises a driving oil cylinder and connecting rods, the four rotary guide discs are in transmission connection through the connecting rods, and the piston end of the oil cylinder is in transmission connection with one of the rotary guide discs.
Further, the cylinder cap terminal surface is equipped with the gland that the cross-section is the L font, form the swivelling chute between gland and the cylinder cap terminal surface, rotatory guiding disc sets up in the swivelling chute.
Furthermore, an electric eye for detecting the rotation angle of the rotary guide disc is arranged on the gland.
Furthermore, six groups of first locking teeth are uniformly distributed on the outer circumferential surface of the tie bar, and six groups of second locking teeth are uniformly distributed on the inner wall of the locking piston.
Furthermore, an electronic ruler is arranged on the gland, the detection end of the electronic ruler is arranged towards the mold locking piston, and a detection magnet corresponding to the monitoring end of the electronic ruler is arranged on the end face of the mold locking piston.
Further, the cylinder cover comprises a cylinder barrel, the outer diameter of the cylinder barrel is matched with the inner diameter of the pressure maintaining hydraulic cavity, the inner diameter of the cylinder barrel is matched with the outer diameter of the mold locking piston, a first ring platform and a second ring platform are sequentially arranged outside the cylinder barrel, the diameter of the first ring platform is larger than that of the second ring platform, and the first ring platform is tightly attached to the pressurizing template;
the end face, far away from the first ring platform, of the second ring platform is provided with a polygonal line-shaped lubricating groove, and the circumferential face of the second ring platform is provided with an oil filling hole communicated with the lubricating groove.
A use method of a synchronous brake mechanism of a two-plate injection molding machine comprises the following steps:
s10, closing the die, enabling the die locking piston to be in an open state, and enabling the pressurizing template to move axially along the Gollin column; the quick die moving system drives the movable die plate to move towards the direction of the fixed die plate to quickly close the die;
s20, locking the mould, wherein the rotary oil cylinder system drives the mould locking piston to rotate to tightly hold the tiebar;
s30, injecting, namely injecting into a mold through an injection device;
s40, maintaining pressure, namely injecting hydraulic oil into the pressure maintaining hydraulic cavity to maintain the pressure of the die;
s50, cooling;
s60, releasing pressure, and removing hydraulic oil of the pressure maintaining hydraulic cavity;
s70, opening the mould, and driving the mould locking piston to rotate by the rotary oil cylinder system to loosen the tiebar;
s80, resetting the pressurizing template, driving the movable template to move towards the direction far away from the fixed template by the rapid template moving system, and rapidly closing the mold;
and S90, ejecting the product, and ejecting the product through a hydraulic ejector pin system.
Further, step S20 includes that, if the tie bar and the mold locking piston are in tooth alignment, hydraulic oil is injected into the first hydraulic cavity/the second hydraulic cavity through the first hydraulic oil hole/the second hydraulic oil hole, and the hydraulic oil drives the mold locking piston to move axially along the tie bar to adjust the mold locking position.
The beneficial effects of the invention are:
1) the pressurizing template and the pressure-maintaining cylinder are integrated, and the tie columns and the fixed template are relatively fixed, so that the tie columns do not move in the die assembly process, the tooth dislocation phenomenon caused by the movement of the tie columns is avoided, the die assembly speed does not need to be controlled in the die assembly process, and the die assembly efficiency is improved.
2) The rotary guide disc is clamped with the mold locking piston through the clamping groove and the clamping strip, so that the normal mold locking and mold opening actions of the mold locking piston can be guaranteed to rotate, and the linear motion of the mold locking piston during tooth position adjustment can be guaranteed; because two tooth positions can be adjusted relatively, consequently applicable in the moulding plastics of not unidimensional mould, can be used to the moulding plastics of different products, effectively solved the tooth problem.
3) Set up 6 groups of mode locking teeth, consequently only need rotate the mode locking piston 30 degrees when the mode locking and can accomplish the mode locking, and because the setting of many groups of mode locking teeth, just rotate to with first mode locking tooth meshing (when the mode locking piston just rotated 5-10 degrees promptly, second mode locking tooth has partly with first mode locking tooth meshing) the time, lock the pressure boost template, pressure boost template this moment can not be for tiebar axial motion, consequently directly high pressure on the pressurize hydraulic pressure chamber this moment, high pressure this moment can transmit to the mould. Therefore, the pressurization is started while the mode locking is ensured, the response efficiency of the injection molding process is improved, and the injection molding time is further shortened.
4) The cylinder cover is provided with the fold line-shaped lubricating groove on the end face, so that lubricating oil has a lubricating effect on the end face of the rotary guide disc when the rotary guide disc rotates, friction between the rotary guide disc and the cylinder cover is reduced, and abrasion between the rotary guide disc and the cylinder cover is further reduced.
Drawings
FIG. 1 is a diagram illustrating a state of use of a synchronous brake mechanism of a two-plate injection molding machine according to an embodiment of the present invention;
FIG. 2 is a first perspective view of a synchronous brake mechanism of a two-plate injection molding machine;
FIG. 3 is a second perspective view of the synchronous brake mechanism of the two-plate injection molding machine;
FIG. 4 is an enlarged schematic view of the portion A of FIG. 3;
FIG. 5 is a first cross-sectional view of a synchronous brake mechanism of the two-plate injection molding machine;
FIG. 6 is an enlarged schematic view of FIG. 5 taken at detail B;
FIG. 7 is a first perspective view of the cylinder head;
FIG. 8 is a second perspective view of the cylinder head;
FIG. 9 is a cross-sectional view of the cylinder head;
FIG. 10 is a second cross-sectional view of the synchronous brake mechanism of the two-plate injection molding machine;
FIG. 11 is an enlarged schematic view of detail C of FIG. 10;
in the figure, 1, a pressurizing template; 2. fixing a template; 3. a hydraulic thimble system; 4. a rapid mold transfer system; 5. a glue injection device; 6. a rotary cylinder system; 7. a Golin pole; 8. a pressure maintaining hydraulic cavity; 9. a mold locking piston; 10. rotating the guide disc; 11. a cylinder cover; 12. a first hydraulic chamber; 13. a card slot; 14. clamping the strip; 15. a tooth aligning adjusting cavity; 16. a second hydraulic chamber; 17. a first hydraulic oil hole; 18. a second hydraulic oil hole; 19. a driving oil cylinder; 20. a connecting rod; 21. a gland; 22. an electric eye; 23. a first locking tooth; 24. a second locking die tooth; 25. an electronic ruler; 26. detecting the magnet; 27. a cylinder barrel; 28. a first ring table; 29. a second ring table; 30. a lubrication groove; 31. and an oil filling hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1 to 11, the present invention provides a technical solution:
example 1:
as shown in fig. 1-11, a synchronous contracting brake mechanism of a two-plate injection molding machine comprises a pressurizing template 1, a fixed template 2, a hydraulic ejector pin system 3, a rapid mold moving system 4 and a rotary oil cylinder system 6;
four corners of the pressurizing template 1 and the fixed template 2 are connected through a tie bar 7, and the pressurizing template 1 is in sliding connection with the tie bar 7; four independent pressure maintaining hydraulic cavities 8 are formed in the pressurizing template 1, a mold locking piston 9 is arranged in each pressure maintaining hydraulic cavity 8, and the rotary oil cylinder system 6 drives the mold locking piston 9 to rotate to tightly hold or loosen the tie post 7;
the hydraulic ejector pin system 3 is used for ejecting a product;
the rapid die moving system 4 is used for driving the pressurizing template 1 to realize opening/closing of the die.
Wherein, the end of the tie bar 7 close to the fixed template 2 is fixedly connected with the fixed template 2.
The working principle is as follows: during injection molding, the mold is arranged on the fixed mold plate 2, the pressurizing mold plate 1 is controlled to move towards the fixed mold plate 2, and then the mold is fixed between the fixed mold plate 2 and the pressurizing mold plate 1, so that mold closing operation is completed. After the die is closed, the clamping piston 9 tightly holds the tie bar 7 to complete the die locking operation. And then sequentially performing the processes of injection (injection through the injection device 5), pressure maintaining, cooling, pressure relief, mold opening, pressurization template 1 resetting, product ejection and thimble retraction. Wherein the product ejection is accomplished by a hydraulic ejector pin system 3.
The pressurize is realized through letting in hydraulic oil to pressurize hydraulic pressure chamber 8, and the pressure of hydraulic oil passes through mode locking piston 9 and acts on pressure boost template 1, and then accomplishes the pressurize through pressure boost template 1 transmission to mould.
Wherein the pressure maintaining hydraulic cavity 8 and the mold locking piston 9 form an independent pressure maintaining cylinder.
Because pressure boost template 1 and guarantor jar are integrated structure, tielin post 7 and fixed die plate 2 relatively fixed, consequently at the compound die process, tielin post 7 can not appear moving, and then avoids appearing because tielin post 7 moves and the tooth dislocation phenomenon that causes, therefore the compound die process need not control compound die speed, has improved compound die efficiency.
Further, as shown in fig. 2-6, the mold locking piston 9 is coaxially disposed outside the tie bar 7, the outer circumferential surface of the mold locking piston 9 is a stepped circular truncated cone structure with sequentially decreasing diameters, a cylinder cover 11 is disposed at an end of the pressure maintaining hydraulic cavity 8, and a first sealed hydraulic cavity 12 is formed among the cylinder cover 11, the mold locking piston 9 and the pressure maintaining hydraulic cavity 8;
the end face of the cylinder cover 11 is rotatably provided with a rotary guide disc 10, a plurality of clamping grooves 13 are uniformly distributed on the inner ring of the rotary guide disc 10, a plurality of clamping strips 14 matched with the clamping grooves 13 are arranged on the mold locking piston 9, the rotary guide disc 10 is arranged outside the mold locking piston 9, and the rotary guide disc 10 is connected with the mold locking piston 9 through the clamping grooves 13 and the clamping strips 14;
a tooth-pairing adjusting cavity 15 is formed among the mold locking piston 9, the rotary guide disc 10 and the cylinder cover 11;
and a sealed second hydraulic cavity 16 is formed between one end of the mold locking piston 9 far away from the cylinder cover 11 and the pressure maintaining hydraulic cavity 8, and a first hydraulic oil hole 17 and a second hydraulic oil hole 18 which are communicated with the first hydraulic cavity 12 and the second hydraulic cavity 16 respectively are arranged on the pressure maintaining hydraulic cavity 8.
Six groups of first locking teeth 23 are uniformly distributed on the outer circumferential surface of the tie bar 7, and six groups of second locking teeth 24 are uniformly distributed on the inner wall of the locking piston 9.
An opening groove is formed between the adjacent first locking teeth 23, the second locking teeth 24 are located in the opening groove when in the opening state and form a dislocation state with the first locking teeth 23, and the second locking teeth 24 do not influence the axial movement of the pressurizing template 1 along the tie bar 7 at the moment.
Wherein the mode locking process is as follows: the rotary oil cylinder system 6 drives the rotary guide disc 10 to rotate, and the rotary guide disc 10 drives the mold locking piston 9 to rotate when rotating, so that the first mold locking teeth 23 and the second mold locking teeth 24 are meshed or dislocated. The first mold locking teeth 23 are in a mold locking state when being engaged with the second mold locking teeth 24, and the first mold locking teeth 23 are in a mold opening state when being dislocated with the second mold locking teeth 24.
The tooth aligning adjustment process comprises the following steps: when molds with different sizes are closed, the first locking teeth 23 and the second locking teeth 24 cannot be locked due to the fact that the thicknesses of the molds are different. At the moment, the first hydraulic oil hole 17 or the second hydraulic oil hole 18 is filled with oil to drive the mold locking piston 9 to do linear motion along the axial direction of the tie bar 7, and therefore the first mold locking teeth 23 and the second mold locking teeth 24 are guaranteed to be in a staggered state.
Wherein, the rotary guide disc 10 passes through draw-in groove 13 and card strip 14 joint with the mode locking piston 9, and when the cylinder drove rotary guide disc 10 and rotates, mode locking piston 9 rotated under draw-in groove 13 and the effect of card strip 14 in step, realized mode locking or die sinking action promptly.
When the positions of the two teeth (the first locking tooth 23 and the second locking tooth 24) need to be adjusted, the first locking tooth 23 and the second locking tooth 24 are in a state during mold opening, the position of the mold locking piston 9 is adjusted by injecting hydraulic oil, and when the mold locking piston 9 moves, the clamping strip 14 moves along the direction of the clamping groove 13, so that the linear motion of the mold locking piston 9 cannot be limited, and the adjustment of the positions of the teeth is further ensured not to be interfered. And (5) after the position is adjusted, normal mode locking is carried out.
In order to ensure the sealing performance and the wear resistance, a wear-resistant ring and a sealing ring are arranged between the outer wall of the mold locking piston 9 and the cavity wall of the pressure maintaining hydraulic cavity 8, and a wear-resistant ring and a sealing ring are arranged between the inner wall of the cylinder cover 11 and the outer wall of the mold locking piston 9.
1. The rotary guide disc 10 is clamped with the mold locking piston 9 through the clamping groove 13 and the clamping strip 14, so that the normal rotation of the mold locking and mold opening actions of the mold locking piston 9 can be ensured, and the linear motion of the mold locking piston 9 during tooth position adjustment can be ensured; because two tooth positions can be adjusted relatively, consequently applicable in the moulding plastics of not unidimensional mould, can be used to the moulding plastics of different products, effectively solved the tooth problem.
2. Because set up 6 groups of mode locking teeth, consequently only need to rotate 30 degrees with mode locking piston 9 and can accomplish the mode locking when the mode locking, and because the setting of multiunit mode locking tooth, when second mode locking tooth 24 just rotated to meshing (when mode locking piston 9 just rotated 5-10 degrees, second mode locking tooth 24 had partly meshed with first mode locking tooth 23), already lock pressure boost template 1, pressure boost template 1 at this moment can not be for tiebar 7 axial motion, consequently directly high pressure on the pressurize hydraulic pressure chamber 8 this moment, high pressure at this moment has can transmitted to the mould. Therefore, the pressurization is started while the mode locking is ensured, the response efficiency of the injection molding process is improved, and the injection molding time is further shortened.
Further, as shown in fig. 2 and 3, the rotary cylinder system 6 includes a driving cylinder 19 and a connecting rod 20, four of the rotary guide discs 10 are in transmission connection through the connecting rod 20, and a piston end of the cylinder is in transmission connection with one of the rotary guide discs 10. Specifically, two adjacent rotary guide discs 10 are connected through a connecting rod 20, and two ends of the connecting rod 20 are hinged to the rotary guide discs 10; the cylinder body of the driving oil cylinder 19 is hinged on the pressurizing template 1, and the end part of the piston rod of the driving oil cylinder 19 is hinged with one rotary guide disc 10.
Further, as shown in fig. 4 and 6, a gland 21 with an L-shaped cross section is disposed on the end surface of the cylinder head 11, a rotation groove is formed between the gland 21 and the end surface of the cylinder head 11, and the rotary guide plate 10 is disposed in the rotation groove.
The normal rotation of the rotary guide plate 10 is ensured by the rotary groove formed between the gland 21 and the cylinder cover 11.
Further, as shown in fig. 4, an electric eye 22 for detecting the rotation angle of the rotary guide disk 10 is provided on the pressing cover 21. The electric eye 22 that sets up is used for detecting the turned angle of guiding disc, and in this scheme, first mode locking tooth 23 evenly is equipped with six groups along 7 circumference of tiebar, forms the die cavity between six first mode locking teeth 23 of group, and second mode locking tooth 24 is located the die cavity during the die sinking (wherein the die sinking finger mould is opened and is in mobile state, and the mode locking finger mould is in the unmovable state of locking), avoids compound die (movable mould towards the cover half motion) process tooth. The electric eye 22 only needs to detect the degree of rotation of the rotary steerable wheel 10.
Further, as shown in fig. 3 and 4, an electronic ruler 25 is arranged on the gland 21, a detection end of the electronic ruler 25 is arranged towards the mold locking piston 9, and a detection magnet 26 corresponding to a monitoring end of the electronic ruler 25 is arranged on an end surface of the mold locking piston 9.
When the electronic ruler 25 that sets up is used for detecting to the tooth and adjusts, the regulation distance of mode locking piston 9 is detected through electronic ruler 25 and is confirmed with the interval that detects between magnet 26, and concrete principle and structure are prior art, do not describe here any more.
Further, as shown in fig. 2, 7-11, the cylinder head 11 includes a cylinder 27, an outer diameter of the cylinder 27 is adapted to an inner diameter of the pressure maintaining hydraulic chamber 8, an inner diameter of the cylinder 27 is adapted to an outer diameter of the mold locking piston 9, a first annular table 28 and a second annular table 29 are sequentially disposed outside the cylinder 27, a diameter of the first annular table 28 is greater than a diameter of the second annular table 29, and the first annular table 28 is disposed in close contact with the pressurizing mold plate 1;
the end face of the second annular table 29 far away from the first annular table 28 is provided with a polygonal line-shaped lubricating groove 30, and the circumferential surface of the second annular table 29 is provided with an oil filling hole 31 communicated with the lubricating groove 30.
When the guide disc lubricating device is used, lubricating oil is injected into the lubricating groove 30 through the oil injection hole 31, the lubricating oil has a lubricating effect on the end face of the guide disc when the guide disc rotates, friction between the guide disc and the cylinder cover 11 is reduced, and abrasion between the guide disc and the cylinder cover is further reduced.
The zigzag-shaped lubricating grooves are of a nine-pointed star structure, so that the lubricating area can be increased, and the lubricating effect is further improved.
The cylinder cover is provided with the fold line-shaped lubricating groove on the end face, so that lubricating oil has a lubricating effect on the end face of the rotary guide disc when the rotary guide disc rotates, friction between the rotary guide disc and the cylinder cover is reduced, and abrasion between the rotary guide disc and the cylinder cover is further reduced.
Example 2:
the embodiment is a method for using a synchronous brake mechanism of a two-plate injection molding machine in embodiment 1, and the method comprises the following steps:
s10, closing the die, enabling the die locking piston to be in an open state, and enabling the pressurizing template to move axially along the Gollin column; the quick die moving system drives the movable die plate to move towards the direction of the fixed die plate to quickly close the die;
s20, locking the mould, wherein the rotary oil cylinder system drives the mould locking piston to rotate to tightly hold the tiebar;
s30, injecting, namely injecting into a mold through an injection device;
s40, maintaining pressure, namely injecting hydraulic oil into the pressure maintaining hydraulic cavity to maintain the pressure of the die;
s50, cooling;
s60, releasing pressure, and removing hydraulic oil of the pressure maintaining hydraulic cavity;
s70, opening the mould, and driving the mould locking piston to rotate by the rotary oil cylinder system to loosen the tiebar;
s80, resetting the pressurizing template, driving the movable template to move towards the direction far away from the fixed template by the rapid template moving system, and rapidly closing the mold;
and S90, ejecting the product, and ejecting the product through a hydraulic ejector pin system.
Further, step S20 includes that, if the tie bar and the mold locking piston are in tooth alignment, hydraulic oil is injected into the first hydraulic cavity/the second hydraulic cavity through the first hydraulic oil hole/the second hydraulic oil hole, and the hydraulic oil drives the mold locking piston to move axially along the tie bar to adjust the mold locking position.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a synchronous band-type brake mechanism of two board-like injection molding machines which characterized in that: the device comprises a pressurizing template, a fixed template, a hydraulic thimble system, a rapid mould moving system and a rotary oil cylinder system;
the four corners of the pressurizing template are connected with the fixed template through tie bars, and the pressurizing template is in sliding connection with the tie bars; four independent pressure maintaining hydraulic cavities are formed in the pressurizing template, a mold locking piston is arranged in each pressure maintaining hydraulic cavity, and the rotary oil cylinder system drives the mold locking piston to rotate to tightly hold or loosen the tie bar;
the hydraulic ejector pin system is used for ejecting a product;
the quick die moving system is used for driving the pressurizing template to realize die opening/closing.
2. The synchronous brake mechanism of the two-plate injection molding machine according to claim 1, characterized in that: the mould locking piston is coaxially arranged outside the tie bar column, the outer circumferential surface of the mould locking piston is of a step-shaped circular truncated cone structure with the diameter gradually reduced, a cylinder cover is arranged at the end part of the pressure maintaining hydraulic cavity, and a sealed first hydraulic cavity is formed among the cylinder cover, the mould locking piston and the pressure maintaining hydraulic cavity;
the end face of the cylinder cover is rotatably provided with a rotary guide disc, a plurality of clamping grooves are uniformly distributed in the inner ring of the rotary guide disc, a plurality of clamping strips matched with the clamping grooves are arranged on the mold locking piston, the rotary guide disc is arranged outside the mold locking piston, and the rotary guide disc is connected with the mold locking piston through the clamping grooves and the clamping strips;
a pair of tooth adjusting cavities are formed among the mold locking piston, the rotary guide disc and the cylinder cover;
and a sealed second hydraulic cavity is formed between one end of the mold locking piston, which is far away from the cylinder cover, and the pressure maintaining hydraulic cavity, and a first hydraulic oil hole and a second hydraulic oil hole which are communicated with the first hydraulic cavity and the second hydraulic cavity respectively are arranged on the pressure maintaining hydraulic cavity.
3. The synchronous brake mechanism of the two-plate injection molding machine according to claim 2, characterized in that: the rotary oil cylinder system comprises a driving oil cylinder and connecting rods, the four rotary guide discs are in transmission connection through the connecting rods, and the piston end of the oil cylinder is in transmission connection with one of the rotary guide discs.
4. The synchronous brake mechanism of the two-plate injection molding machine according to claim 2, characterized in that: the cylinder cap terminal surface is equipped with the gland that the cross-section is the L font, form the swivelling chute between gland and the cylinder cap terminal surface, rotatory positioning disk sets up in the swivelling chute.
5. The synchronous brake mechanism of the two-plate injection molding machine according to claim 4, characterized in that: and an electric eye for detecting the rotation angle of the rotary guide disc is arranged on the gland.
6. The synchronous brake mechanism of the two-plate injection molding machine according to claim 4, characterized in that: six groups of first locking teeth are uniformly distributed on the outer circumferential surface of the tie bar, and six groups of second locking teeth are uniformly distributed on the inner wall of the locking piston.
7. The synchronous brake mechanism of the two-plate injection molding machine according to claim 6, characterized in that: the electronic ruler is arranged on the gland, the detection end of the electronic ruler faces the mode locking piston, and the end face of the mode locking piston is provided with a detection magnet corresponding to the monitoring end of the electronic ruler.
8. The synchronous brake mechanism of the two-plate injection molding machine according to any one of claims 2 to 7, characterized in that: the cylinder cover comprises a cylinder barrel, the outer diameter of the cylinder barrel is matched with the inner diameter of the pressure maintaining hydraulic cavity, the inner diameter of the cylinder barrel is matched with the outer diameter of the mold locking piston, a first ring platform and a second ring platform are sequentially arranged outside the cylinder barrel, the diameter of the first ring platform is larger than that of the second ring platform, and the first ring platform is arranged close to the pressurizing template;
the end face, far away from the first ring platform, of the second ring platform is provided with a polygonal line-shaped lubricating groove, and the circumferential face of the second ring platform is provided with an oil filling hole communicated with the lubricating groove.
9. The use method of the synchronous brake mechanism of the two-plate injection molding machine according to any one of claims 1 to 7 is characterized in that: the method comprises the following steps:
s10, closing the die, enabling the die locking piston to be in an open state, and enabling the pressurizing template to move axially along the Gollin column; the quick die moving system drives the movable die plate to move towards the direction of the fixed die plate to quickly close the die;
s20, locking the mould, wherein the rotary oil cylinder system drives the mould locking piston to rotate to tightly hold the tiebar;
s30, injecting, namely injecting into a mold through an injection device;
s40, maintaining pressure, namely injecting hydraulic oil into the pressure maintaining hydraulic cavity to maintain the pressure of the die;
s50, cooling;
s60, releasing pressure, and removing hydraulic oil of the pressure maintaining hydraulic cavity;
s70, opening the mould, and driving the mould locking piston to rotate by the rotary oil cylinder system to loosen the tiebar;
s80, resetting the pressurizing template, driving the movable template to move towards the direction far away from the fixed template by the rapid template moving system, and rapidly closing the mold;
and S90, ejecting the product, and ejecting the product through a hydraulic ejector pin system.
10. The use according to claim 9, characterized in that: step S20 further includes that, if the tie bar and the mold locking piston are in tooth alignment, hydraulic oil is injected into the first hydraulic cavity/the second hydraulic cavity through the first hydraulic oil hole/the second hydraulic oil hole, and the mold locking piston is driven by the hydraulic oil to move axially along the tie bar to adjust the mold locking position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210653423.8A CN114889071A (en) | 2022-06-09 | 2022-06-09 | Synchronous brake mechanism of two-plate injection molding machine and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210653423.8A CN114889071A (en) | 2022-06-09 | 2022-06-09 | Synchronous brake mechanism of two-plate injection molding machine and use method thereof |
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Citations (6)
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|---|---|---|---|---|
| US20030215541A1 (en) * | 2002-04-18 | 2003-11-20 | Hartmut Roetzel | Hydraulic clamping device for molding machines |
| CN2910534Y (en) * | 2006-06-13 | 2007-06-13 | 恒生机器（深圳）有限公司 | Injection moulding locked gear featured synchronous staggered tooth and three-board form |
| CN108016005A (en) * | 2017-12-28 | 2018-05-11 | 刘镇江 | Double-plate matched mould apparatus |
| CN208215940U (en) * | 2018-04-04 | 2018-12-11 | 周飞 | A kind of high-speed type double-plate clamping apparatus |
| JP3223780U (en) * | 2019-08-21 | 2019-10-31 | 宜得世股▲ふん▼有限公司 | Direct pressure mold lock structure with two die plates |
| CN209616280U (en) * | 2019-03-07 | 2019-11-12 | 安徽江澜智能装备有限公司 | A kind of injection machine mould locking mechanism |
-
2022
- 2022-06-09 CN CN202210653423.8A patent/CN114889071A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030215541A1 (en) * | 2002-04-18 | 2003-11-20 | Hartmut Roetzel | Hydraulic clamping device for molding machines |
| CN2910534Y (en) * | 2006-06-13 | 2007-06-13 | 恒生机器（深圳）有限公司 | Injection moulding locked gear featured synchronous staggered tooth and three-board form |
| CN108016005A (en) * | 2017-12-28 | 2018-05-11 | 刘镇江 | Double-plate matched mould apparatus |
| CN208215940U (en) * | 2018-04-04 | 2018-12-11 | 周飞 | A kind of high-speed type double-plate clamping apparatus |
| CN209616280U (en) * | 2019-03-07 | 2019-11-12 | 安徽江澜智能装备有限公司 | A kind of injection machine mould locking mechanism |
| JP3223780U (en) * | 2019-08-21 | 2019-10-31 | 宜得世股▲ふん▼有限公司 | Direct pressure mold lock structure with two die plates |
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